AIR COOLED CONDENSING UNIT 38EH 38AH

User Manual: AIR COOLED CONDENSING UNIT 38EH

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38AH024-134
With 40RM016-034
Commercial Air-Cooled
Split Systems
50 Hz

Product
Data

63 to 390 Nominal kW (18 to 111 Tons)

This catalog describes the full range
of versatile 38AH condensing units.
For 38AH sizes 024-034, this catalog
also describes matching Carrier
40RM air handlers, and gives
combined ratings for these 38AH/
40RM systems. All 38AH condensing
units can also be matched to
Carrier’s 39 Series air handlers. Use
Carrier’s exclusive AHU (Air-Handling
Unit) selection program to select
these matching indoor units.

Features/Benefits

38AH CONDENSING UNIT

40RM016-034

Copyright 1998 Carrier Corporation

• Up to 4 compressors and 2
independent refrigerant circuits provide design flexibility; size 044-134 condensing
units can supply one or 2 air
handlers
• Efficient 38AH Series units
save energy
• Variable air volume units
operate at as low as 8% of
nominal capacity without the
use of energy-inefficient hot
gas bypass.
• Constant volume units operate at as low as 16% of nominal capacity (standard) or
8% of nominal capacity (with
accessory unloader)
• Weatherized steel cabinet
ensures corrosion protection
• Protection against high
discharge and low suction
refrigerant pressure, and low
oil pressure ensure compressor reliability
• Timed bypass of low pressure switch on start-up of
024-034 size units.
• Crankcase heaters prevent
oil dilution and ensure
compressor lubrication
Form 38AH-C4PD

The 38AH condensing unit offers the
utmost in system configuration and
control adaptability. Its premiumquality standard components ensure
durable, efficient and reliable
operation.

Versatility
38AH Series condensing units feature
up to 4 compressors and 2 refrigerant circuits, and can be matched with
a wide variety of air-handling units.
All condensing unit circuits can supply
a single air handler; size 044-134
units can supply 2 separate air
handlers.
Standard units have constant volume control. A variable air volume
(VAV) option is available. The VAV
units have electric unloaders on the
compressors to closely match building
loads. The VAV option requires only
a simple connection to the Carrier
ModuPanel™ discharge air controller,
thereby saving installation time and
cost. (NOTE: Unit sizes 024-034
require field supplied and installed
accumulator.)

Durable construction
All 38AH units have weatherized cabinets constructed of heavy-duty galvanized steel prepainted with corrosionresistant baked enamel. Inside and
outside surfaces are protected to ensure long life and good looks. The
durable, galvanized steel, prepainted
components exceed the requirements
of the 500-hour salt spray test per
ASTM B117.
The unit’s coils have aluminum fins
mechanically bonded to copper tubes
for long-term reliability and improved
heat transfer. An inert epoxy barrier is available on precoated fins to
provide improved durability in mildly
corrosive coastal environments. Copper fins on copper tubes are available for harsh industrial or coastal
conditions.

Reliability
The 38AH condensing units feature
time-proven, highly reliable 06D and
06E semi-hermetic compressors.
Unloading capability is a standard feature on the lead compressor of each
circuit. Each compressor has vibration
isolators to provide quiet operation
and reduced component stress.

2

Because 38AH units have 2 independent circuits, they provide inherent
backup capability. Each circuit is also
protected by the following safety
features:
• Time Guardt anti-short-cycling
device
• low oil pressure safety switch
• low refrigerant pressure switch
(suction)
• high refrigerant pressure switch
(discharge)
• calibrated circuit breakers for compressors and outdoor fans

Easier installation and service
38AH units are equipped with hinged
control-box access doors, liquid line
shutoff valves, and service valves
on the compressors.
Larger 38AH124 and 134 size
units are shipped as 2 modules for
easier handling and rigging.

Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Model Number Nomenclature — 38AH024-034 . . . . . . . . . . . . . . . . . . .
4
Model Number Nomenclature — 40RM . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Ratings Summary — 38AH024-034/40RM . . . . . . . . . . . . . . . . . . . . . . . . 5
Options and Accessories — 38AH024-034/40RM . . . . . . . . . . . . . . . . . 6-8
Physical Data — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9,10
Physical Data — 40RM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,12
Dimensions — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Dimensions — 40RM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,15
Selection Procedure — 38AH024-034/40RM . . . . . . . . . . . . . . . . . . . . . 16,17
Performance Data — 38AH024-034/40RM . . . . . . . . . . . . . . . . . . . . . . . 18-31
Typical Piping and Wiring — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . 32,33
Electrical Data — 38AH024-034/40RM . . . . . . . . . . . . . . . . . . . . . . . . . . 34-36
Controls — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Typical Control Wiring Schematic — 38AH024-034 . . . . . . . . . . . . . . . . 38
Application Data — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39,40
Application Data — 40RM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41-43
Model Number Nomenclature — 38AH044-134 . . . . . . . . . . . . . . . . . . . 44
Ratings Summary — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Options and Accessories — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . 45,46
Physical Data — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-50
Dimensions — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-57
Selection Procedure, 2-Circuit Units — 38AH044-134 . . . . . . . . . . . . . . 58
Selection Procedure, Single-Circuit Units — 38AH044-084 Only . . . . . 58
Performance Data — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59-84
Typical Piping and Wiring — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . 85,86
Electrical Data — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87,88
Controls — 38AH044-084 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Controls — 38AH094-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Typical Control Wiring Schematic — 38AH044-134 . . . . . . . . . . . . . . . . 91-93
Application Data — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94-100
Guide Specifications — 38AH024-034 . . . . . . . . . . . . . . . . . . . . . . . . . . 101-103
Guide Specifications — 40RM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104,105
Guide Specifications — 38AH044-134 . . . . . . . . . . . . . . . . . . . . . . . . . . 106-108

Feature/Benefits (cont)
Innovative Carrier 40RM airhandling units in sizes 016034: ideal matches for
38AH024-034 condensing
units
The 40RM Series has excellent fan
performance, efficient direct-expansion
(DX) coils, a unique combination of
indoor air quality features, and easy
installation. Its versatility and state-ofthe-art features help to ensure that
your split system provides economical
performance now and in the future.

Indoor-air quality (IAQ)
features
The unique combination of IAQ
features in the 40RM Series air
handlers helps to make sure that only
clean, fresh, conditioned air is delivered to the occupied space.
Direct-expansion (DX) cooling coils
prevent the build-up of humidity in the
room, even during part-load conditions. The 016-034 sizes feature dualcircuit coils.
Standard 51-mm (2-in.) disposable
filters remove dust and airborne
particles from the occupied space.
Thermal insulation contains an
immobilized anti-microbial agent to
inhibit the growth of bacteria and
fungi. The anti-microbial agent is registered with the U.S. Environmental
Protection Agency (EPA).
The pitched PVC drain pan can be
adjusted for a right- or left-hand connection to provide positive drainage
and to prevent standing condensate.
The 40RM accessory economizer
can provide ventilation air to improve
indoor-air quality. When used with
CO2 sensors, the economizer admits

fresh outdoor air to replace stale,
recirculated indoor air. Includes 24-v
controls.

Economy
The 40RM Series packaged air
handlers save money by providing
reduced installation expense and
energy-efficient performance.
Quick installation is ensured by the
multiposition design. Units can be
installed in either the horizontal or
vertical (upflow) configuration without
modifications. All units have drainpan connections on both sides, and
pans can be pitched for right- or lefthand operation with a simple adjustment. Fan motors and contactors
are prewired and thermostatic expansion valves (TXVs) are factoryinstalled on all 40RM models.
High efficiency, precision-balanced
fans minimize air turbulence, surging, and unbalanced operation, cutting
operating expenses.
The economizer accessory precisely
controls the blend of outdoor air and
room air to achieve comfort levels.
When the outside air enthalpy is suitable, outside air dampers can fully
open to provide ‘‘free’’ cooling.

Coil flexibility
Model 40RM direct-expansion coils
have galvanized steel tube sheets; inlet
and outlet connections are on the
same end. The coils are designed for
use with Refrigerant 22 and have copper tubes mechanically bonded to
aluminum sine-wave fins. The coils
include matched, factory-installed
TXVs with matching distributor
nozzles. Accessory hot water and
steam coils and electric heaters are
also available.

Easier installation and service
The multiposition design and component layout help you to get the unit
installed and running quickly. The
DX coils have factory-installed TXVs
with matching distributor nozzles.
Units can be converted from horizontal to vertical operation by simply
repositioning the unit. Drain pan connections are duplicated on both sides
of the unit. The filters, motor drive,
TXVs, and coil connections are all
easily accessed by removing a single
side panel.

Rugged dependability
40RM units are made to last. The
die-formed galvanized steel panels
ensure structural integrity under all
operating conditions. Galvanized steel
fan housings are securely mounted
to a die-formed galvanized steel deck.
Mechanically bonded coil fins provide improved heat transfer. Rugged
pillow-block bearings are securely fastened to the solid steel fan shaft
with split collets and clamp locking
devices.

3

Model number nomenclature — 38AH024-034
38AH

024

38AH — Commercial Air-Cooled
Condensing Unit
Nominal Capacity — kW (Tons)
024 — 63 (18)
028 — 73 (21)
034 — 87 (25)

——

—

9

1

3

A

A
Compressors
A — Standard Compressors — One Suction
Pressure-Actuated Unloader on Lead
Compressor
C — Variable Air Volume (VAV) Option —
Includes 2 Electric Unloaders on Lead
Compressor and Control Box
Modifications

Not Used
Condenser Coil Fin Material
Aluminum (Standard)
C
— Copper (Optional)
K
— Precoated Aluminum (Optional)
SO — Post-Coated Aluminum (Contact Factory)
SO — Post-Coated Copper (Contact Factory)
Voltage Designation
3 — 346-3-50
8 — 230-3-50
9 — 400-3-50

Fan Motors and Labels
A — Standard Condenser Fan Motors
and Labels
B — Class F Fan Motors (Export Only) —
Not UL Approved
Packaging
1 — Standard Domestic Packaging —
Bottom Skid
3 — Export Packaging — Top and Bottom
Skid
Revision Number
1 — Current Revision

SO — Special Order
UL — Underwriters’ Laboratories (U.S.A.)

4

Model number nomenclature — 40RM
40RM

—

016

——

B

9

0

3

GC

40RM — Commercial Packaged
Air Handler

Factory-Installed Options
GC — Unpainted, Standard Motor, and
Standard Drive
HC — Unpainted, Standard Motor, and
Medium-Static Drive
(Not available for sizes 016-028)
TC — Unpainted, Alternate Motor, and
Medium-Static Drive
(sizes 016-028)
YC — Unpainted, Alternate Motor, and
High-Static Drive*
ED — Painted, Standard Motor, and
Standard Drive
FD — Painted, Standard Motor, and
Medium-Static Drive
(Not available for sizes 016-028)
RD — Painted, Alternate Motor, and
Medium-Static Drive
(sizes 016-028)
WD — Painted, Alternate Motor, and
High Static Drive*

Cooling Coil
— — Direct Expansion
Nominal Capacity — kW (Tons)
016 — 52 (15)
024 — 70 (20)
028 — 87 (25)
034 — 105 (30)
Not Used
Expansion Device
B — Thermostatic Expansion Valve
Voltage Designation (V-Ph-Hz)
8 — 230-3-50
9 — 400-3-50
Revision Number
0 — Original Model

Packaging
3 — Export Packaging

*YC and WD option codes for all 034 size units designate standard motor and high-static drive.

Ratings summary — 38AH024-034/40RM
OUTDOOR
UNIT
38AH
024
028
034

INDOOR
UNIT
40RM
016
024
028
024
028
034
028
034

AIRFLOW
L/s
2,800
3,800
4,700
3,800
4,700
5,650
4,700
5,650

Cfm
6,000
8,000
10,000
8,000
10,000
12,000
10,000
12,000

SYSTEM GROSS
CAPACITY
kW†
Btuh**
57.3
195,000
62.5
214,000
66.3
227,000
68.9
236,000
73.5
251,000
77.6
265,000
82.6
283,000
87.7
300,000

CONDENSING UNIT ONLY
GROSS CAPACITY*
kW
Btuh
63

216,000

73

250,000

87

297,000

*Condensing unit only ratings are at 7.2 C (45 F) saturated suction temperature and 36 C (95 F) entering-air
temperature.
†Total gross system capacity (kW) is based on 20 C wet bulb and 26.7 C dry bulb air entering indoor unit, and
36 C dry bulb air entering outdoor unit.
**Total gross system capacity (Btuh) is based on 67 F wet bulb and 80 F dry bulb air entering indoor unit, and
95 F dry bulb air entering outdoor unit.

5

Options and accessories —
38AH024-034/40RM
38AH024-034 factory-installed options

40RM factory-installed options

VAV option provides unit with 2 electric unloaders and
control box modifications necessary to connect to a fieldinstalled ModuPanel™ control.
Class F fan motors provide additional motor insulation
for high ambient temperature environments.
Condenser coil options are available to match coil construction to site conditions for the best corrosion durability.
Pre-coated coils provide protection in mild coastal environments. All copper coils are best suited for moderate coastal
applications, while post-coated coils provide superior protection in severe coastal and industrial applications.

Prepainted steel units are available from the factory for
applications that require painted units. Units are painted
with American Sterling Gray color. (Check availability and
lead times.)
Alternate fan motors and drives are available to provide the widest possible range of performance.

38AH024-034 field-installed accessories
Pressure-operated unloading allows compressors to be
unloaded in response to compressor suction pressure.
Electric unloader conversion package includes hardware and solenoid valve to convert a pressure-operated
unloader to electric unloading.
Electric unloading package provides an additional step
of electric unloading.
−29 C (−20 F) low-ambient temperature kit (Motormastert III) controls outdoor-fan motor operation to maintain the correct head pressure at low outdoor ambient temperatures. Only one low ambient temperature kit is required
per unit.
Gage panel package provides a suction and a discharge
pressure gage for one refrigerant circuit.
ModuPanel control box allows 38AH system to operate
VAV system. Includes microprocessor satellite sequencer,
4 status lights, 5-hour bypass timer, and locked enclosure.
Requires field-installed accumulator.
Carrier’s line of thermostats provide both programmable and non-programmable capability with the new
Debonair™ line of commercial programmable thermostats, the TEMP System controls offer communication
capability with staged heating and cooling, the Commercial Electronic thermostats provide 7-day programmable
capability for economical applications, while the nonprogrammable thermostats offer a multitude of staged
heating and cooling subbase options.

40RM field-installed accessories
Discharge plenum directs the air discharge directly into
the occupied space; integral horizontal and vertical louvers
enable redirection of airflow. Accessory is available unpainted or painted. Field assembly required.
Two-row hot water coils have 5.9-mm (5⁄8-in.) diameter
copper tubes mechanically bonded to aluminum plate fins.
Coils have non-ferrous headers.
One-row steam coil has 25.4-mm (1-in.) OD copper tube
and aluminum fins. The Inner Distributing Tube (IDT)
design provides uniform temperatures across the coil face.
The steam coil has a broad operating pressure range; up to
1207 kPag at 204.4 C (175 psig at 400 F) and up to
2069 kPag at 148.9 C (300 psig at 300 F). IDT steam coils
are especially suited to applications where sub-freezing air
enters the unit.
Electric resistance heaters have a one- or two-stage,
open-wire design and are mounted in a rigid frame. Safety
cutouts for high temperature conditions are standard. Heaters also feature single-point power connection.
Economizer (enthalpy controlled) provides ventilation
air and ‘‘free’’ cooling if outside ambient temperature and
humidity are suitable. Can also be used with CO2 sensors
to help meet indoor air quality requirements. Economizer
comes complete with 24 v controls.
Return-air grille provides a protective barrier over
the return-air opening and gives a finished appearance to
units installed in the occupied space. Accessory is available
unpainted or painted.
Subbase provides a stable, raised platform and room
for condensate drain connection for floor-mounted units.
Accessory is available unpainted or painted. Field assembly
required.

CONDENSER COIL PROTECTION APPLICATIONS
ENVIRONMENT*
DESCRIPTION
(Enviro-Shield™ Option)
Standard, Al/Cu
Pre-Coated Al/Cu
Cu/Cu
Post-Coated Al/Cu
Post-Coated Cu/Cu

Standard,
Non-Corrosive

Mild
Coastal

Moderate
Coastal

Severe
Coastal

Combined
Coastal
and Industrial

X
X
X
X
X

LEGEND
Al/Cu
— Aluminum Fin with Copper Tube Coil
Cu/Cu
— Copper Fin with Copper Tube Coil
Enviro-Shield — Family of Coil Protection Options
Post-Coated — Organic Coating applied to Entire Coil Assembly
Pre-Coated
— Epoxy Coating Applied to Fin Stock Material
*See ‘‘Selection Guide: Environmental Corrosion Protection’’ Catalog No. 811-839 for more information.

6

Industrial

X

Overhead suspension brackets support units in horizontal ceiling installations.
Carrier’s line of thermostats provide both programmable and non-programmable capability with the new
Debonair™ line of commercial programmable thermostats, the TEMP System controls offer communication
capability with staged heating and cooling, the Commercial Electronic thermostats provide 7-day programmable
capability for economical applications, while the nonprogrammable thermostats offer a multitude of staged
heating and cooling subbase options.
CO2 sensors can be used in conjunction with the economizer accessory to help meet indoor air quality requirements. The sensor signals the economizer to open when

the CO2 level in the space exceeds the set point. A Carrier
Comfort System programmable thermostat can be used to
override the sensor if the outside-air temperature is too high
or too low.
CO2 sensors can be connected to the Carrier Comfort
System relay pack or to the economizer accessory. Connection to the economizer requires field-supplied and installed Honeywell dc adapter no. Q769C1004.
Condensate drain trap includes an overflow shutoff switch
than can be wired to turn off the unit if the trap becomes
plugged. The kit also includes a wire harness that can be
connected to an alarm if desired. The transparent trap is
designed for easy service and maintenance.

CARRIER THERMOSTATS
COMMERCIAL ELECTRONIC THERMOSTAT

DEBONAIR™ COMMERCIAL PROGRAMMABLE
THERMOSTAT

Carrier
®

Pm
COOL

AUTO
HEAT

NON-PROGRAMMABLE THERMOSTAT
H

TEMP SYSTEM THERMOSTAT
WITH TIMECLOCK

C

7

Options and accessories —
38AH024-034/40RM (cont)
40RM WITH DISCHARGE PLENUM, RETURN
GRILLE, AND SUBBASE

40RM WITH HOT WATER OR STEAM COIL
HOT WATER OR
STEAM COIL

DISCHARGE
PLENUM

RETURN-AIR
GRILLE

SUBBASE
FAN
COIL
UNIT

40RM WITH ECONOMIZER

40RM WITH CONDENSATE DRAIN TRAP

ECONOMIZER

FAN COIL UNIT

8

FAN COIL
UNIT

Physical data — 38AH024-034
38AH024-034 UNITS — SI
UNIT 38AH
NOMINAL CAPACITY (kW)
OPERATING WEIGHT (kg)
With Aluminum-Fin Coil
With Copper-Fin Coil
COMPRESSOR
Type
Quantity Cylinders (ea)
Speed (r/s)
Capacity Steps
(FIOP or Acy) — %
—%
—%
Unloader Setting (kPa)
— Load
— Unload
OIL CHARGE PER CIRCUIT (L)
REFRIGERANT
Shipping Charge (kg)**
Operating Charge, Typical (kg)**
CONDENSER FANS
Quantity...Dia (mm)
Nominal Hp
Nominal Airflow (L/s)
Speed (r/s)
Watts (total)
CONDENSER COIL
Rows...Fins/m
Total Face Area (sq m)
Storage Cap. (kg)††
CONTROLS
Pressurestat (kPa)
High Pressure
Cutout
Cut-in
Low Pressure
Cutout
Cut-in
Oil Pressure
Cutout (Diff)
Cut-in (Diff)
FAN CYCLING CONTROLS
No. 2 Fan:
Temp Close (C)
Temp Open (C)
PRESSURE RELIEF
Location
Temp (C)
CONNECTIONS (Sweat) (ea ckt)
Suction — in. OD
Liquid — in. OD
LEGEND
Diff — Differential
FIOP — Factory-Installed Option
VAV — Variable Air Volume

024
Circuit 1

028
Circuit 2

Circuit 1

034
Circuit 2

Circuit 1

Circuit 2

63

73

87

798.3
872.3

825.6
899.0
Reciprocating Semi-Hermetic
06DH328
06DA328
6
6
24.3
24.3

853.0
951.2

06DH824
6
24.3

06DA824
6
24.3

100
67*
33†

100
—
—

524
400

1.36
9.1
2...762
1.0
7870

2...748
3.64
17.4

06DH328
6
24.3

100
100
100
67*
—
67*
33†
—
33†
Factory Installed
—
524
—
524
—
400
—
400
4.73
R-22
1.36
1.36
1.36
1.36
9.1
9.1
9.1
11.4
Propeller Type — Direct Driven
2...762
1.0
7870
16
3100
Enhanced Copper Tubes, Aluminum Lanced Fin
2...748
3.64
17.4

06DA537
6
24.3
100
—
—
—
—

1.36
11.4
2...762
1.0
7400

3...670
3.64
26.0

2937 6 48
2206 6 138
186 6 21
303 6 34
Manual Reset
41.4
60.7
21.1 6 1.6
15.6 6 1.6
Fusible Plug
Liquid Line, Suction Line, Compressor
99
13⁄8
5 ⁄8
*Standard unit — single pressure-actuated suction unloader on compressor no. 1.
†VAV FIOP — double electrically actuated unloaders on compressor
no. 1.
**With 7.6 m of interconnecting piping.
††Condenser 80% full of liquid R-22 at 48.8 C.

9

Physical data — 38AH024-034 (cont)
38AH024-034 UNITS — ENGLISH
UNIT 38AH
NOMINAL CAPACITY (Tons)
OPERATING WEIGHT (lb)
With Aluminum-Fin Coil
With Copper-Fin Coil
COMPRESSOR
Type
Quantity Cylinders (ea)
Speed (rpm)
Capacity Steps
(FIOP or Acy) — %
—%
—%
Unloader Setting (psig)
— Load
— Unload
OIL CHARGE PER CIRCUIT (Pt)
REFRIGERANT
Shipping Charge (lb)**
Operating Charge, Typical (lb)**
CONDENSER FANS
Quantity...Dia (in.)
Nominal Hp
Nominal Airflow (cfm)
Speed (rpm)
Watts (total)
CONDENSER COIL
Rows...Fins/in.
Total Face Area (sq ft)
Storage Cap. (lb)††
CONTROLS
Pressurestat (psig)
High Pressure
Cutout
Cut-in
Low Pressure
Cutout
Cut-in
Oil Pressure
Cutout (Diff)
Cut-in (Diff)
FAN CYCLING CONTROLS
No. 2 Fan:
Temp Close (F)
Temp Open (F)
PRESSURE RELIEF
Location
Temp (F)
CONNECTIONS (Sweat) (ea ckt)
Suction — in. OD
Liquid — in. OD
LEGEND
Diff — Differential
FIOP — Factory-Installed Option
VAV — Variable Air Volume

10

024
Circuit 1

028
Circuit 2

Circuit 1

034
Circuit 2

Circuit 1

Circuit 2

18

21

25

1760
1923

1820
1982
Reciprocating Semi-Hermetic
06DH328
06DA328
6
6
1450
1450

1880
2097

06DH824
6
1450

06DA824
6
1450

100
67*
33†

100
—
—

76
58

3
20
2...30
1.0
16,700

2...19
39.20
37.7

06DH328
6
1450

100
100
100
67*
—
67*
33†
—
33†
Factory Installed
—
76
—
76
—
58
—
58
10
R-22
3
3
3
3
20
20
20
25
Propeller Type — Direct Driven
2...30
1.0
16,700
950
3100
Enhanced Copper Tubes, Aluminum Lanced Fin
2...19
39.20
37.7

06DA537
6
1450
100
—
—
—
—

3
25
2...30
1.0
15,700

3...17
39.20
56.6

426 6 7
320 6 20
27 6 3
44 6 5
Manual Reset
6.0
8.8
70 6 3
60 6 3
Fusible Plug
Liquid Line, Suction Line, Compressor
210
13⁄8
5⁄8
*Standard unit — single pressure-actuated suction unloader on compressor no. 1.
†VAV FIOP — double electrically actuated unloaders on compressor
no. 1.
**With 25 ft of interconnecting piping.
††Condenser 80% full of liquid R-22 at 120 F.

Physical data — 40RM
40RM — SI
UNIT 40RM
NOMINAL CAPACITY (kW)
OPERATING WEIGHT (kg)
Base Unit with TXV
Plenum
FANS
Qty...Diam. (mm)
Nominal Airflow (L/s)
Airflow Range (L/s)
Nominal Motor kW (Standard Motor)
230-3-50, 400-3-50
Motor Speed (r/s)
230-3-50, 400-3-50
REFRIGERANT
Operating charge (kg)
(approx per circuit)*
DIRECT-EXPANSION COIL
Max Working Pressure (kPag)
Face Area (sq m)
No. of Splits
No. of Circuits per Split
Split Type...Percentage
Rows...Fins/m
STEAM COIL
Max Working Pressure (kPag at 204.4 C)
Total Face Area (sq m)
Rows...Fins/m
HOT WATER COIL
Max Working Pressure (kPag)
Total Face Area (sq m)
Rows...Fins/m
Water Volume
(L)
(m3)
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (ODF)
DX Coil — Liquid Refrigerant (ODF)
Steam Coil, In (MPT)
Steam Coil, Out (MPT)
Hot Water Coil, In (MPT)
Hot Water Coil, Out (MPT)
Condensate (PVC)
FILTERS
Quantity...Size
Access Location

016
52

024
70

028
87

034
105

311
63

313
63

463
82

467
82

2...381
2831
2124-3539

2...381
3775
2831-4719

2...457
4719
3539-5899

2...457
5663
4247-7079

2.16

3.73

5.60

7.46

23.8

23.8

23.8

23.8

2.04/2.04

2.27/2.27

R-22
1.13/1.13

1.64
2
12
3...591

1.59/1.59

Enhanced Copper Tubes, Aluminum Sine-Wave Fins
2999
1.85
2.30
2
2
13
15
Face...50/50
3...670
3...591

2.77
2
18
3...591

1207
1.24
1...394

1.24
1...394

1.24
2...335

1.24
2...335

1.39
1...394

1.39
1...394

1.39
2...493

1.39
2...493

1034

52.6
0.052
2...11⁄8

54.1
0.054
2...11⁄8

2...13⁄8
2...13⁄8
2...5⁄8
1...21⁄2
1...21⁄2
1...2
1...2
1
1...1 ⁄4 ODM/1 IDF
Throwaway — Factory Supplied
4...406 × 508 × 51
4...508 x 610 x 51
4...406 × 610 × 51
4...508 x 635 x 51
Right or Left Side

LEGEND
DX — Direct Expansion
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.

11

Physical data — 40RM (cont)
40RM — ENGLISH
UNIT 40RM
NOMINAL CAPACITY (Tons)
OPERATING WEIGHT (lb)
Base Unit with TXV
Plenum
FANS
Qty...Diam. (in.)
Nominal Airflow (cfm)
Airflow Range (cfm)
Nominal Motor Hp (Standard Motor)
230-3-50, 400-3-50
Motor Speed (rpm)
230-3-50, 400-3-50
REFRIGERANT
Operating charge (lb)
(approx per circuit)*
DIRECT-EXPANSION COIL
Max Working Pressure (psig)
Face Area (sq ft)
No. of Splits
Split Type...Percentage
No. of Circuits per Split
Rows...Fins/in.
STEAM COIL
Max Working Pressure (psig at 400 F)
Total Face Area (sq ft)
Rows...Fins/in.
HOT WATER COIL
Max Working Pressure (psig)
Total Face Area (sq ft)
Rows...Fins/in.
Water Volume
(gal)
(ft3)
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (ODF)
DX Coil — Liquid Refrigerant (ODF)
Steam Coil, In (MPT)
Steam Coil, Out (MPT)
Hot Water Coil, In (MPT)
Hot Water Coil, Out (MPT)
Condensate (PVC)
FILTERS
Quantity...Size (in.)
Access Location
LEGEND
DX — Direct Expansion
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.

12

016
15

024
20

028
25

034
30

685
140

690
140

1020
180

1030
180

2...15
6000
4500-7500

2...15
8000
6000-10,000

2...18
10,000
7500-12,500

2...18
12,000
9000-15,000

2.9

5.0

7.5

10.0

4.5/4.5

5.0/5.0

1425
R-22
2.5/2.5

17.67
2
12
3...15

3.5/3.5

Enhanced Copper Tubes, Aluminum Sine-Wave Fins
435
19.88
24.86
2
2
Face...50/50
13
15
3...17
3...15

29.83
2
18
3...15

175
13.33
1...10

13.33
1...10

13.33
2...8.5

13.33
2...8.5

15.0
1...10

15.0
1...10

15.0
2...12.5

15.0
2...12.5

150

13.9
1.85
2...11⁄8

14.3
1.90
2...11⁄8

2...13⁄8
2...13⁄8
2...5⁄8
1...21⁄2
1...21⁄2
1...2
1...2
1
1...1 ⁄4 ODM/1 IDF
Throwaway — Factory Supplied
4...16 × 20 × 2
4...20 x 24 x 2
4...16 × 24 × 2
4...20 x 25 x 2
Right or Left Side

Dimensions — 38AH024-034

NOTES:
1. There must be 4 ft [1220 mm] for service and for unrestricted airflow on all
sides of unit.
2. There must be minimum 8 ft [2440 mm] clear air space above unit.
3. ‘‘C’’ in the package number indicates copper coils.
4. Dimensions in [ ] are in millimeters.
5. The approximate operating weight of the unit is shown below.
6. Certified dimensional drawing is available on request.

CORNER WEIGHT — lbs [kg]
UNIT
38AH

024
024C
028
028C
034
034C

‘‘1’’

‘‘2’’

‘‘3’’

‘‘4’’

631.6
[286.5]
666.5
[302.3]
658.7
[298.8]
693.0
[314.3]
667.0
[302.5]
718.3
[325.8]

577.6
[262.0]
609.5
[276.5]
602.4
[273.3]
633.8
[287.5]
610.0
[276.7]
656.8
[297.9]

263.1
[119.3]
309.0
[140.2]
267.0
[121.1]
313.0
[142.0]
288.0
[130.7]
344.8
[156.4]

287.7
[130.5]
337.9
[153.3]
291.9
[132.4]
342.2
[155.2]
315.0
[142.9]
377.0
[171.0]

CENTER OF
GRAVITY
A Dim.
in.
[mm]
40.00
[1016]
43.00
[1092]
39.25
[997]
42.25
[1073]
41.00
[1041]
44.00
[1117]

B Dim.
in.
[mm]

32.75
[832]

TOTAL
UNIT WT
lb [kg]
1760
[798.3]
1923
[872.3]
1820
[825.6]
1982
[899.0]
1880
[853.0]
2097
[951.2]

13

Dimensions — 40RM
40RM016,024

TXV — Thermostatic Expansion Valve
NOTES:
1. Dimensions in [ ] are in millimeters.
2.
Direction of airflow.
3. Recommended clearance:
• Rear: 76 mm (3 in.)
• Front: 762 mm (2 ft, 6 in.)
• Right side: 762 mm (2 ft, 6 in.)
• Left side: 762 mm (2 ft, 6 in.)
• Local codes or jurisdiction may prevail.
4. Liquid piping not supplied by Carrier.
5. Duct flange is factory supplied and field
installed.
UNIT
40RM
016
024

14

UNIT WEIGHT
lb (kg)
685 (311)
690 (313)

40RM028,034

TXV — Thermostatic Expansion Valve
NOTES:
1. Dimensions in [ ] are in millimeters.
2.
Direction of airflow.
3. Recommended clearance:
• Rear: 76 mm (3 in.)
• Front: 762 mm (2 ft, 6 in.)
• Right side: 762 mm (2 ft, 6 in.)
• Left side: 762 mm (2 ft, 6 in.)
• Local codes or jurisdiction may prevail.
4. Liquid piping not supplied by Carrier.
5. Duct flange is factory supplied and field
installed.

15

Selection procedure —
38AH024-034/40RM — SI
NOTE: Pages 22 and 23 contain combination ratings
for 38AH024-034 units and matching 40RM air handlers. If the 38AH units are matched with 39L or 39NX air
handlers, use the Carrier AHU (Air-Handling Unit) selection program software package for combination ratings. If
Totalinet P702 water coolers are used, determine the performance by cross-plotting the condensing unit performance
found in this book against the P702 performance in the
P702 product data book. If the 38AH condensing units are
matched with 2 independent 40RM units, cross-plot for performance ratings or contact Carrier Application Engineering for assistance.
I Determine cooling load, evaporator-air temperature and quantity.
Given:
Total Cooling Capacity
Required (TC) . . . . . . . . . . . . . . . . . . . . . . . . . 60 kW
Sensible Heat Capacity
Required (SHC) . . . . . . . . . . . . . . . . . . . . . . . 48 kW
Temperature Air Entering
Condenser (Edb) . . . . . . . . . . . . . . . . . . . . . . . . 36 C
Temperature Air Entering
Evaporator (db/wb) . . . . . . . . 26.7 C db, 20 C wb
Evaporator Air Quantity . . . . . . . . . . . . . . . 3800 L/s
External Static Pressure . . . . . . . . . . . . . . . . . . 150 Pa
Length of Interconnecting
Refrigerant Piping . . . . . . . . . . . . . . . 18 m (Linear)
II Select condensing unit air-handler combination.
For this example, select a 38AH024 matched with a
40RM024. (See Combination Ratings table, page 22)
This 38AH024/40RM024 condensing unit-air handler combination provides 62.5 kW of total cooling
capacity and 49.2 kW of sensible capacity at the given
conditions. If other temperatures or airflow values are
required, interpolate the values from the combination
ratings.

16

III Determine sizes of liquid and suction lines.
Enter the Refrigerant Pipe Sizes table (page 40). The
sizes shown are based on an equivalent length of pipe.
This equivalent length is equal to the linear length
of pipe indicated at the top of each sizing column, plus
a 50% allowance for fitting losses. (For a more accurate determination of actual equivalent length in place
of using the estimated 50% value, refer to Carrier
System Design Manual.) For this example, note in the
linear length column that the proper pipe size is 5⁄8 in.
for the liquid lines and 13⁄8 in. for the suction lines.
IV Determine fan rpm and bhp (brake horsepower).
At the Air Handler Fan Performance table (page 27),
enter the 40RM024 section at 3800 L/s and move to
the External Static Pressure (ESP) column. Note that
the conditions require 14.30 r/s at 2.64 kW.
V Determine motor and drive.
Enter the Fan Motor Data tables on page 41, and find
that the standard motor for a 40RM024 unit is rated
at 3.73. Since the kW required is 2.64, a standard
motor satisfies the requirement and should be used.
Next, find the type of drive that satisfies the 14.30 r/s
requirement in the Drive Data tables on page 42. For
a 40RM024 unit, the Standard Drive table shows an
r/s range of 11.9 to 14.6. Since the r/s required is
14.30, the standard drive satisfies the requirement and
should be used. Select the standard motor and standard drive combination (option code GC or ED).

Selection procedure —
38AH024-034/40RM — English
NOTE: Pages 24 and 25 contain combination ratings for
38AH024-034 units and matching 40RM air handlers. If
the 38AH units are matched with 39L or 39NX air
handlers, use the Carrier AHU (Air-Handling Unit) selection
program software package for combination ratings. If
Totalinet P702 water coolers are used, determine the performance by cross-plotting the condensing unit performance
found in this book against the P702 performance in the
P702 product data book. If the 38AH condensing units are
matched with 2 independent 40RM units, cross-plot for performance ratings or contact Carrier Application Engineering for assistance.
I Determine cooling load, evaporator-air temperature and quantity.
Given:
Total Cooling Capacity
Required (TC) . . . . . . . . . . . . . . . . . . 210,000 Btuh
Sensible Heat Capacity
Required (SHC) . . . . . . . . . . . . . . . . . 175,000 Btuh
Temperature Air Entering
Condenser (Edb) . . . . . . . . . . . . . . . . . . . . . . . . 95 F
Temperature Air Entering
Evaporator (db/wb) . . . . . . . . . . . 80 F db, 67 F wb
Evaporator Air Quantity . . . . . . . . . . . . . . . 8000 cfm
External Static Pressure . . . . . . . . . . . . . . . 1.0 in. wg
Length of Interconnecting
Refrigerant Piping . . . . . . . . . . . . . . . . 30 ft (Linear)
II Select condensing unit air-handler combination.
For this example, select a 38AH024 matched with a
40RM024. (See Combination Ratings table, page 24.)
This 38AH024/40RM024 condensing unit-air handler combination provides 214,500 Btuh of total cooling capacity and 179,000 Btuh of sensible capacity at
the given conditions. If other temperatures or airflow
values are required, interpolate the values from the combination ratings.

III Determine sizes of liquid and suction lines.
Enter the Refrigerant Pipe Sizes table (page 40). The
sizes shown are based on an equivalent length of pipe.
This equivalent length is equal to the linear length of
pipe indicated at the top of each sizing column, plus a
50% allowance for fitting losses. (For a more accurate
determination of actual equivalent length in place of
using the estimated 50% value, refer to Carrier
System Design Manual.) For this example, note in the
linear length column that the proper pipe size is 5⁄8 in.
for the liquid lines and 13⁄8 in. for the suction lines.
IV Determine fan rpm and bhp (brake horsepower).
At the Air Handler Fan Performance table (page 29),
enter the 40RM024 section at 8000 cfm and move to
the External Static Pressure (ESP) column. Note that
the conditions require 954 rpm at 4.23 bhp.
V Determine motor and drive.
Enter the Fan Motor Data tables on page 41, and find
that the alternate motor for a 40RM024 unit is rated
at 7.5 hp. Since the bhp required is 4.23, an alternate
motor satisfies the requirement and should be used.
Next, find the type of drive that satisfies the 954 rpm
requirement in the Drive Data tables on pages 42 and
43. For a 40RM024 unit, the Medium-Static Drive table
shows an rpm range of 814 to 1018 . Since the rpm
required is 954, the medium-static drive satisfies the
requirement and should be used. Select the alternate
motor and medium-static drive combination (option
code TC or RD).

17

Performance data — 38AH024-034/40RM
CONDENSING UNIT RATINGS — SI
38AH024
SST
(C)
−6

−4

−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

38AH034
24
42.9
11.3
35.2
47.0
11.5
35.2
51.4
11.7
35.2
55.5
11.9
35.6
59.9
12.1
36.2
64.3
12.3
36.9
69.2
12.5
37.7
74.1
12.8
38.5
78.9
13.0
39.2

Air Temperature Entering Condenser (C)
28
32
36
40
44
48
40.6
38.0
35.6
33.0
30.6
28.2
11.6
12.1
12.6
13.0
13.4
13.7
39.2
43.2
47.1
51.1
55.2
59.2
44.6
41.8
39.2
36.6
34.0
31.4
11.9
12.5
13.0
13.5
13.9
14.3
39.2
43.2
47.2
51.2
55.2
59.2
48.6
45.8
43.0
40.2
37.4
34.8
12.1
12.8
13.4
14.0
14.5
15.0
39.2
43.2
47.2
51.2
55.2
59.2
52.8
49.8
47.0
44.0
41.2
38.4
12.4
13.1
13.8
14.5
15.0
15.6
39.6
43.5
47.4
51.3
55.3
59.2
57.0
54.0
51.0
48.2
45.2
42.2
12.7
13.5
14.2
14.9
15.5
16.1
40.1
43.9
47.8
51.6
55.5
59.3
61.4
58.2
55.2
52.2
49.0
46.0
13.0
13.8
14.6
15.4
16.0
16.7
40.7
44.4
48.1
51.9
55.6
59.4
66.0
62.8
59.6
56.4
53.2
50.0
13.3
14.1
15.0
15.8
16.5
17.3
41.4
45.1
48.8
52.4
56.2
59.9
70.8
67.4
64.0
60.8
57.4
54.0
13.6
14.5
15.4
16.3
17.1
17.8
42.1
45.8
49.4
53.1
56.8
60.4
75.6
72.0
68.6
65.2
61.6
58.2
13.8
14.8
15.8
16.7
17.6
18.4
42.9
46.5
50.1
53.8
57.4
61.0

52
25.7
14.2
63.2
28.8
14.9
63.2
31.8
15.6
63.2
35.5
16.3
63.2
39.3
16.9
63.2
42.9
17.5
63.1
46.8
18.1
63.6
50.7
18.8
64.1
54.7
19.4
64.7

38AH028
SST
(C)
−6

−4

−2

0

2

4

6

8

10

18

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

24
51.1
13.4
35.4
55.2
13.8
36.0
59.7
14.1
36.5
64.5
14.4
37.1
69.3
14.7
37.8
74.0
15.0
38.8
79.4
15.3
39.6
85.0
15.7
40.5
90.6
16.0
41.5

Air Temperature Entering Condenser (C)
28
32
36
40
44
48
48.6
46.0
43.4
40.8
38.4
36.0
14.0
14.7
15.3
15.9
16.5
17.1
39.3
43.3
47.3
51.2
55.2
59.1
52.8
50.0
47.4
44.8
42.2
39.6
14.3
15.1
15.8
16.5
17.1
17.7
39.8
43.7
47.6
51.4
55.3
59.2
57.0
54.2
51.4
48.6
46.0
43.2
14.7
15.5
16.3
17.0
17.7
18.3
40.3
44.1
47.8
51.6
55.5
59.3
61.6
58.6
55.6
52.8
49.8
47.0
15.1
15.9
16.8
17.5
18.3
19.0
40.9
44.6
48.4
52.1
55.9
59.6
66.2
63.2
60.0
57.0
54.0
51.0
15.5
16.4
17.3
18.1
18.9
19.7
41.7
45.3
49.0
52.7
56.5
60.2
71.0
67.6
64.4
61.2
58.0
54.8
15.9
16.8
17.8
18.7
19.5
20.4
42.4
46.1
49.7
53.4
57.1
60.7
76.2
72.6
69.2
65.8
62.4
59.2
16.3
17.3
18.3
19.2
20.2
21.0
43.3
46.9
50.5
54.1
57.8
61.4
81.6
77.8
74.2
70.6
67.0
63.4
16.6
17.7
18.8
19.8
20.8
21.8
44.1
47.7
51.3
54.9
58.5
62.2
86.8
83.0
79.0
75.2
71.6
67.8
17.0
18.2
19.3
20.4
21.4
22.4
45.0
48.6
52.1
55.7
59.3
62.9

52
33.3
17.7
63.1
37.0
18.4
63.0
40.5
19.1
63.1
43.9
19.8
63.4
47.9
20.6
64.0
51.6
21.3
64.4
55.6
22.2
65.1
59.8
22.9
65.7
64.0
23.6
66.4

SST
(C)
−6

−4

−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

24
59.8
16.6
35.9
65.5
17.0
36.1
70.8
17.3
36.2
76.4
17.6
36.8
82.2
18.0
37.5
88.0
18.4
38.2
94.4
18.9
39.0
100.8
19.4
39.9
107.3
19.6
40.9

Air Temperature Entering Condenser (C)
28
32
36
40
44
48
57.1
54.0
51.1
48.1
45.3
42.4
17.3
18.1
18.9
19.7
20.4
21.0
40.0
43.9
47.9
51.9
55.9
59.9
62.2
59.2
56.0
52.9
49.8
46.8
17.7
18.6
19.5
20.3
21.0
21.8
40.1
44.0
48.0
51.9
55.9
59.9
67.5
64.2
60.8
57.5
54.3
51.0
18.1
19.1
20.0
21.0
21.7
22.6
40.3
44.1
48.1
52.0
56.0
59.9
73.0
69.5
66.0
62.5
59.1
55.7
18.6
19.5
20.6
21.6
22.5
23.4
40.7
44.5
48.4
52.2
56.1
60.1
78.7
75.0
71.4
67.7
64.2
60.6
19.0
20.1
21.2
22.2
23.2
24.1
41.3
45.1
48.8
52.7
56.4
60.3
84.3
80.5
76.8
72.9
69.2
65.5
19.5
20.7
21.8
22.9
24.0
24.9
42.0
45.6
49.3
53.0
56.8
60.5
90.4
86.5
82.4
78.5
74.6
70.6
20.0
21.2
22.5
23.6
24.7
25.8
42.8
46.4
50.0
53.7
57.4
61.1
96.7
92.5
88.2
84.1
80.0
75.8
20.5
21.8
23.1
24.3
25.5
26.6
43.7
47.2
50.8
54.5
58.1
61.7
102.9
98.6
94.1
89.7
85.5
81.1
20.9
22.3
23.7
25.1
26.3
27.5
44.5
48.1
51.7
55.3
58.9
62.4

LEGEND
CMP — Compressor Power, kW
SDT — Saturated Discharge Temperature (leaving compressor) (C)
SST — Saturated Suction Temperature (entering condensing unit)
TCG — Total Cooling Capacity, Gross (kW)
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

52
39.5
21.8
63.8
43.5
22.7
63.8
47.7
23.5
63.9
52.2
24.5
63.8
57.0
25.3
64.0
61.7
26.2
64.2
66.7
27.1
64.8
71.7
28.0
65.4
76.8
29.0
66.0

CONDENSING UNIT CIRCUIT RATINGS — SI
38AH024 CIRCUIT NO. 1 OR 2
Air Temperature Entering Condenser (C)
SST
(C)
24
28
32
36
40
44
48
TCG
21.5
20.3
19.0
17.8
16.5
15.3
14.1
−6
CMP
5.6
5.8
6.1
6.3
6.5
6.7
6.9
SDT
35.2
39.2
43.2
47.1
51.1
55.2
59.2
TCG
23.5
22.3
20.9
19.6
18.3
17.0
15.7
−4
CMP
5.7
5.9
6.2
6.5
6.8
7.0
7.2
SDT
35.2
39.2
43.2
47.2
51.2
55.2
59.2
TCG
25.7
24.3
22.9
21.5
20.1
18.7
17.4
−2
CMP
5.8
6.1
6.4
6.7
7.0
7.3
7.5
SDT
35.2
39.2
43.2
47.2
51.2
55.2
59.2
TCG
27.8
26.4
24.9
23.5
22.0
20.6
19.2
0
CMP
5.9
6.2
6.6
6.9
7.2
7.5
7.8
SDT
35.6
39.6
43.5
47.4
51.3
55.3
59.2
TCG
29.9
28.5
27.0
25.5
24.1
22.6
21.1
2
CMP
6.1
6.4
6.7
7.1
7.5
7.8
8.1
SDT
36.2
40.1
43.9
47.8
51.6
55.5
59.3
TCG
32.2
30.7
29.1
27.6
26.1
24.5
23.0
4
CMP
6.2
6.5
6.9
7.3
7.7
8.0
8.4
SDT
36.9
40.7
44.4
48.1
51.9
55.6
59.4
TCG
34.6
33.0
31.4
29.8
28.2
26.6
25.0
6
CMP
6.3
6.6
7.1
7.5
7.9
8.3
8.6
SDT
37.7
41.4
45.1
48.8
52.4
56.2
59.9
TCG
37.0
35.4
33.7
32.0
30.4
28.7
27.0
8
CMP
6.4
6.8
7.2
7.7
8.1
8.5
8.9
SDT
38.5
42.1
45.8
49.4
53.1
56.8
60.4
TCG
39.5
37.8
36.0
34.3
32.6
30.8
29.1
10
CMP
6.5
6.9
7.4
7.9
8.4
8.8
9.2
SDT
39.2
42.9
46.5
50.1
53.8
57.4
61.0

38AH028 CIRCUIT NO. 1 OR 2
Air Temperature Entering Condenser (C)
SST
(C)
24
28
32
36
40
44
48
TCG
25.5
24.3
23.0
21.7
20.4
19.2
18.0
−6
CMP
6.7
7.0
7.3
7.7
8.0
8.3
8.5
SDT
35.4
39.3
43.3
47.3
51.2
55.2
59.1
TCG
27.6
26.4
25.0
23.7
22.4
21.1
19.8
−4
CMP
6.9
7.2
7.5
7.9
8.2
8.5
8.9
SDT
36.0
39.8
43.7
47.6
51.4
55.3
59.2
TCG
29.8
28.5
27.1
25.7
24.3
23.0
21.6
−2
CMP
7.0
7.4
7.8
8.1
8.5
8.8
9.2
SDT
36.5
40.3
44.1
47.8
51.6
55.5
59.3
TCG
32.2
30.8
29.3
27.8
26.4
24.9
23.5
0
CMP
7.2
7.6
8.0
8.4
8.8
9.1
9.5
SDT
37.1
40.9
44.6
48.4
52.1
55.9
59.6
TCG
34.7
33.1
31.6
30.0
28.5
27.0
25.5
2
CMP
7.4
7.8
8.2
8.6
9.1
9.5
9.8
SDT
37.8
41.7
45.3
49.0
52.7
56.5
60.2
TCG
37.0
35.5
33.8
32.2
30.6
29.0
27.4
4
CMP
7.5
7.9
8.4
8.9
9.3
9.8
10.2
SDT
38.8
42.4
46.1
49.7
53.4
57.1
60.7
TCG
39.7
38.1
36.3
34.6
32.9
31.2
29.6
6
CMP
7.7
8.1
8.6
9.2
9.6
10.1
10.5
SDT
39.6
43.3
46.9
50.5
54.1
57.8
61.4
TCG
42.5
40.8
38.9
37.1
35.3
33.5
31.7
8
CMP
7.8
8.3
8.9
9.4
9.9
10.4
10.9
SDT
40.5
44.1
47.7
51.3
54.9
58.5
62.2
TCG
45.3
43.4
41.5
39.5
37.6
35.8
33.9
10
CMP
8.0
8.5
9.1
9.7
10.2
10.7
11.2
SDT
41.5
45.0
48.6
52.1
55.7
59.3
62.9

CMP
SDT
SST
TCG

—
—
—
—

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

52
12.8
7.1
63.2
14.4
7.5
63.2
15.9
7.8
63.2
17.7
8.2
63.2
19.7
8.5
63.2
21.4
8.8
63.1
23.4
9.1
63.6
25.4
9.4
64.1
27.3
9.7
64.7

38AH034 CIRCUIT NO. 1
Air Temperature Entering Condenser (C)
SST
(C)
24
28
32
36
40
44
48
TCG
25.0
23.7
22.3
21.0
19.6
18.3
17.0
−6
CMP
6.7
7.0
7.3
7.7
8.0
8.3
8.5
SDT
35.2
39.2
43.2
47.2
51.2
55.2
59.3
TCG
27.5
26.0
24.6
23.1
21.7
20.3
18.9
−4
CMP
6.8
7.1
7.5
7.9
8.2
8.5
8.9
SDT
35.2
39.2
43.2
47.2
51.2
55.2
59.3
TCG
29.9
28.4
26.8
25.2
23.7
22.2
20.7
−2
CMP
6.9
7.2
7.7
8.1
8.5
8.8
9.2
SDT
35.1
39.2
43.2
47.3
51.3
55.3
59.3
TCG
32.4
30.8
29.2
27.6
25.9
24.4
22.8
0
CMP
7.0
7.4
7.8
8.3
8.7
9.1
9.5
SDT
35.5
39.5
43.4
47.4
51.3
55.3
59.3
TCG
35.0
33.4
31.7
30.0
28.3
26.7
25.0
2
CMP
7.1
7.5
8.0
8.5
8.9
9.3
9.7
SDT
36.1
39.9
43.8
47.6
51.5
55.3
59.2
TCG
37.7
35.9
34.2
32.5
30.7
29.0
27.3
4
CMP
7.2
7.7
8.2
8.7
9.1
9.6
10.0
SDT
36.6
40.4
44.1
47.8
51.6
55.4
59.2
TCG
40.6
38.7
36.9
35.0
33.2
31.4
29.6
6
CMP
7.3
7.8
8.3
8.9
9.4
9.8
10.3
SDT
37.2
41.1
44.7
48.4
52.1
55.9
59.6
TCG
43.5
41.5
39.6
37.6
35.7
33.8
31.9
8
CMP
7.5
8.0
8.5
9.1
9.6
10.1
10.6
SDT
38.2
41.9
45.5
49.1
52.8
56.5
60.1
TCG
46.3
44.3
42.3
40.2
38.2
36.3
34.3
10
CMP
7.6
8.1
8.7
9.3
9.9
10.4
10.9
SDT
39.1
42.7
46.3
49.9
53.5
57.1
60.7

52
15.6
8.9
63.2
17.4
9.2
63.2
19.1
9.6
63.4
21.2
9.9
63.2
23.4
10.2
63.0
25.5
10.5
62.9
27.7
10.9
63.4
29.9
11.2
63.8
32.3
11.5
64.3

52
16.7
8.9
63.1
18.5
9.2
63.0
20.3
9.5
63.1
22.0
9.9
63.4
23.9
10.3
64.0
25.8
10.7
64.4
27.8
11.1
65.1
29.9
11.4
65.7
32.0
11.8
66.4

38AH034 CIRCUIT NO. 2
Air Temperature Entering Condenser (C)
SST
(C)
24
28
32
36
40
44
48
TCG
34.8
33.4
31.7
30.1
28.5
27.0
25.4
−6
CMP
9.9
10.3
10.8
11.2
11.7
12.1
12.5
SDT
36.7
40.7
44.6
48.6
52.6
56.5
60.5
TCG
38.0
36.2
34.6
32.9
31.2
29.5
27.9
−4
CMP
10.2
10.6
11.1
11.6
12.1
12.5
12.9
SDT
36.9
41.0
44.8
48.7
52.6
56.6
60.5
TCG
40.9
39.1
37.4
35.6
33.8
32.1
30.3
−2
CMP
10.4
10.9
11.4
11.9
12.5
12.9
13.4
SDT
37.3
41.3
45.0
48.8
52.7
56.6
60.5
TCG
44.0
42.2
40.3
38.4
36.6
34.7
32.9
0
CMP
10.6
11.2
11.7
12.3
12.9
13.4
13.9
SDT
38.1
41.8
45.6
49.3
53.1
56.9
60.8
TCG
47.2
45.3
43.3
41.4
39.4
37.5
35.6
2
CMP
10.9
11.5
12.1
12.7
13.3
13.9
14.4
SDT
38.8
42.7
46.3
50.0
53.8
57.5
61.3
TCG
50.4
48.4
46.3
44.3
42.2
40.2
38.2
4
CMP
11.2
11.8
12.5
13.1
13.8
14.4
14.9
SDT
39.8
43.5
47.1
50.8
54.4
58.1
61.8
TCG
53.9
51.7
49.6
47.4
45.3
43.2
41.0
6
CMP
11.6
12.2
12.9
13.6
14.2
14.9
15.5
SDT
40.7
44.4
48.0
51.6
55.2
58.9
62.5
TCG
57.4
55.2
52.9
50.6
48.4
46.2
43.9
8
CMP
11.9
12.5
13.3
14.0
14.7
15.4
16.0
SDT
41.7
45.4
48.9
52.5
56.1
59.7
63.3
TCG
61.0
58.6
56.3
53.9
51.5
49.2
46.8
10
CMP
12.1
12.8
13.6
14.4
15.2
15.9
16.6
SDT
42.8
46.3
49.9
53.4
57.0
60.6
64.1

52
23.9
13.0
64.4
26.1
13.4
64.5
28.6
13.9
64.3
31.0
14.5
64.4
33.6
15.1
65.0
36.1
15.7
65.4
38.9
16.2
66.2
41.7
16.8
66.9
44.5
17.4
67.7

NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

19

Performance data — 38AH024-034/40RM (cont)
CONDENSING UNIT RATINGS — ENGLISH
38AH024
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

38AH034
75
141.8
11.4
95.0
161.6
11.7
95.0
181.6
11.9
95.0
202.4
12.2
97.0
223.0
12.5
98.0
247.6
12.8
101.0
268.0
13.1
103.0

Air Temperature
85
95
130.6
119.0
11.7
12.4
105.0
115.0
149.4
136.8
12.1
12.9
105.0
115.0
168.2
154.8
12.5
13.5
105.0
115.0
188.4
174.4
12.9
14.0
107.0
116.0
208.0
194.0
13.4
14.5
108.0
117.0
232.0
216.0
13.8
15.0
110.0
119.0
254.0
236.0
14.2
15.6
112.0
121.0

Entering
100
113.2
12.7
120.0
130.6
13.3
120.0
148.0
13.9
120.0
167.4
14.5
121.0
186.8
15.0
122.0
208.0
15.6
123.0
228.0
16.2
125.0

Condenser (F)
105
115
107.4
96.2
12.9
13.3
125.0
135.0
124.4
112.0
13.6
14.2
125.0
135.0
141.4
128.0
14.3
15.0
125.0
135.0
160.4
146.4
14.9
15.8
126.0
135.0
179.6
165.0
15.6
16.5
126.0
136.0
200.0
184.4
16.2
17.3
128.0
137.0
220.0
204.0
16.8
18.0
130.0
139.0

125
84.8
13.8
145.0
99.6
14.8
145.0
114.6
15.8
145.0
132.4
16.6
145.0
150.5
17.5
146.0
168.6
18.4
146.0
188.0
19.3
148.0

38AH028
SST
(F)
20

25

30

35

40

45

50

20

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

75
168.4
13.5
95.0
189.0
13.9
97.0
210.2
14.3
98.0
231.6
14.8
99.0
256.8
15.1
102.0
284.0
15.7
104.0
306.0
16.0
106.0

Air Temperature
85
95
157.6
145.6
14.1
15.0
105.0
115.0
177.4
164.6
14.6
15.7
106.0
116.0
197.4
183.8
15.2
16.3
107.0
117.0
220.0
204.0
15.7
17.0
109.0
118.0
242.0
226.0
16.3
17.7
111.0
120.0
266.0
250.0
16.9
18.3
113.0
122.0
292.0
272.0
17.4
19.0
115.0
124.0

Entering
100
139.8
15.4
120.0
158.4
16.1
121.0
177.2
16.8
121.0
197.6
17.6
123.0
218.0
18.3
125.0
242.0
19.0
127.0
264.0
19.8
129.0

Condenser (F)
105
115
134.0
122.8
15.8
16.6
125.0
135.0
152.2
140.2
16.6
17.4
126.0
135.0
170.6
157.4
17.3
18.3
126.0
136.0
190.4
176.4
18.1
19.2
128.0
137.0
210.0
195.2
18.9
20.2
129.0
138.0
232.0
216.0
19.7
21.0
131.0
140.0
256.0
238.0
20.6
22.0
133.0
142.0

125
111.4
17.4
145.0
128.0
18.3
145.0
144.2
19.3
146.0
162.6
20.3
147.0
179.8
21.5
147.0
199.0
22.3
149.0
221.0
23.5
151.0

SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

75
198.0
16.6
97.0
223.5
17.1
97.0
249.4
17.6
97.0
276.2
18.0
99.0
304.5
18.7
101.0
335.0
19.3
103.0
367.0
19.7
106.0

Air Temperature
85
95
185.5
171.2
17.4
18.5
107.0
117.0
209.4
194.4
18.1
19.3
107.0
117.0
234.3
217.7
18.7
20.1
107.0
117.0
260.0
243.0
19.4
20.8
109.0
118.0
287.0
269.0
20.0
21.7
110.0
119.0
316.0
297.0
20.7
22.6
112.0
121.0
346.0
325.0
21.4
23.4
115.0
124.0

Entering
100
164.4
19.0
122.0
187.0
19.8
122.0
210.0
20.7
122.0
235.5
21.5
123.0
260.0
22.4
124.0
287.0
23.3
126.0
314.0
24.3
128.0

Condenser (F)
105
115
157.6
144.4
19.5
20.4
127.0
137.0
179.6
165.3
20.5
21.5
127.0
137.0
202.3
186.0
21.3
22.5
127.0
137.0
226.5
209.8
22.2
23.6
128.0
137.0
251.0
233.5
23.2
24.7
129.0
138.0
278.0
259.0
24.2
25.8
130.0
140.0
305.0
283.0
25.2
27.0
133.0
141.0

LEGEND
CMP — Compressor Power, kW
SDT — Saturated Discharge Temperature (leaving compressor) (F)
SST — Saturated Suction Temperature (entering condensing unit)
TCG — Total Cooling Capacity, Gross (1000 Btuh)
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

125
131.0
21.4
147.0
150.8
22.6
147.0
170.2
23.8
147.0
193.2
25.0
147.0
215.8
26.2
147.0
240.0
27.4
149.0
262.0
28.8
150.0

CONDENSING UNIT CIRCUIT RATINGS — ENGLISH
38AH024 CIRCUIT NO. 1 OR 2
Air Temperature
SST
(F)
75
85
95
TCG
70.9
65.3
59.5
20
CMP
5.7
5.9
6.2
SDT
95.0
105.0
115.0
TCG
80.8
74.7
68.4
25
CMP
5.8
6.1
6.5
SDT
95.0
105.0
115.0
TCG
90.8
84.1
77.4
30
CMP
6.0
6.3
6.7
SDT
95.0
105.0
115.0
TCG
101.2
94.2
87.2
35
CMP
6.1
6.5
7.0
SDT
97.0
107.0
116.0
TCG
111.5
104.0
97.0
40
CMP
6.3
6.7
7.3
SDT
98.0
108.0
117.0
TCG
123.8
116.0
108.0
45
CMP
6.4
6.9
7.5
SDT
101.0
110.0
119.0
TCG
134.0
127.0
118.0
50
CMP
6.6
7.1
7.8
SDT
103.0
112.0
121.0

Entering
100
56.6
6.3
120.0
65.3
6.7
120.0
74.0
7.0
120.0
83.7
7.2
121.0
93.4
7.5
122.0
104.0
7.8
123.0
114.0
8.1
125.0

Condenser (F)
105
115
53.7
48.1
6.5
6.7
125.0
135.0
62.2
56.0
6.8
7.1
125.0
135.0
70.7
64.0
7.2
7.5
125.0
135.0
80.2
73.2
7.5
7.9
126.0
135.0
89.8
82.5
7.8
8.3
126.0
136.0
100.0
92.2
8.1
8.6
128.0
137.0
110.0
102.0
8.4
9.0
130.0
139.0

38AH028 CIRCUIT NO. 1 OR 2
Air Temperature
SST
(F)
75
85
95
TCG
84.2
78.8
72.8
20
CMP
6.7
7.0
7.5
SDT
95.0
105.0
115.0
TCG
94.5
88.7
82.3
25
CMP
6.9
7.3
7.8
SDT
97.0
106.0
116.0
TCG
105.1
98.7
91.9
30
CMP
7.2
7.6
8.2
SDT
98.0
107.0
117.0
TCG
115.8
110.0
102.0
35
CMP
7.4
7.9
8.5
SDT
99.0
109.0
118.0
TCG
128.4
121.0
113.0
40
CMP
7.6
8.2
8.8
SDT
102.0
111.0
120.0
TCG
142.0
133.0
125.0
45
CMP
7.8
8.4
9.2
SDT
104.0
113.0
122.0
TCG
153.0
146.0
136.0
50
CMP
8.0
8.7
9.5
SDT
106.0
115.0
124.0

Entering
100
69.9
7.7
120.0
79.2
8.1
121.0
88.6
8.4
121.0
98.8
8.8
123.0
109.0
9.2
125.0
121.0
9.5
127.0
132.0
9.9
129.0

Condenser (F)
105
115
67.0
61.4
7.9
8.3
125.0
135.0
76.1
70.1
8.3
8.7
126.0
135.0
85.3
78.7
8.7
9.2
126.0
136.0
95.2
88.2
9.1
9.6
128.0
137.0
105.0
97.6
9.5
10.1
129.0
138.0
116.0
108.0
9.9
10.5
131.0
140.0
128.0
119.0
10.3
11.0
133.0
142.0

CMP
SDT
SST
TCG

—
—
—
—

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

125
42.4
6.9
145.0
49.8
7.4
145.0
57.3
7.9
145.0
66.2
8.3
145.0
75.3
8.8
146.0
84.3
9.2
146.0
94.0
9.6
148.0

38AH034 CIRCUIT NO. 1
Air Temperature
SST
(F)
75
85
95
TCG
82.4
76.5
70.2
20
CMP
6.7
7.0
7.5
SDT
95.0
105.0
115.0
TCG
93.8
87.4
80.4
25
CMP
6.9
7.3
7.8
SDT
95.0
105.0
115.0
TCG
105.4
98.3
90.7
30
CMP
7.0
7.5
8.1
SDT
95.0
105.0
115.0
TCG
117.2
110.0
102.0
35
CMP
7.1
7.7
8.3
SDT
97.0
106.0
116.0
TCG
130.5
122.0
114.0
40
CMP
7.3
7.9
8.6
SDT
97.0
107.0
116.0
TCG
145.0
135.0
127.0
45
CMP
7.4
8.1
8.9
SDT
99.0
109.0
118.0
TCG
158.0
149.0
139.0
50
CMP
7.6
8.3
9.2
SDT
102.0
111.0
120.0

Entering
100
67.1
7.7
120.0
77.0
8.0
120.0
87.0
8.4
120.0
98.5
8.6
121.0
110.0
8.9
121.0
122.0
9.2
123.0
134.0
9.5
125.0

Condenser (F)
105
115
64.0
58.0
7.9
8.3
125.0
135.0
73.6
67.0
8.3
8.7
125.0
135.0
83.3
76.0
8.6
9.1
125.0
135.0
94.5
86.8
8.9
9.5
126.0
135.0
106.0
97.5
9.2
9.9
126.0
135.0
118.0
109.0
9.6
10.3
127.0
137.0
130.0
120.0
9.9
10.7
129.0
138.0

125
51.9
8.7
145.0
60.3
9.2
145.0
68.7
9.7
145.0
79.2
10.1
145.0
89.3
10.5
145.0
100.0
11.0
147.0
110.5
11.5
147.0

125
55.7
8.7
145.0
64.0
9.2
145.0
72.1
9.7
146.0
81.3
10.2
147.0
89.9
10.7
147.0
99.5
11.2
149.0
110.5
11.8
151.0

38AH034 CIRCUIT NO. 2
Air Temperature
SST
(F)
75
85
95
TCG
115.6
109.0
101.0
20
CMP
9.9
10.4
11.0
SDT
98.0
108.0
118.0
TCG
129.7
122.0
114.0
25
CMP
10.2
10.8
11.5
SDT
98.0
108.0
118.0
TCG
144.0
136.0
127.0
30
CMP
10.6
11.2
12.0
SDT
98.0
109.0
118.0
TCG
159.0
150.0
141.0
35
CMP
10.9
11.7
12.5
SDT
101.0
111.0
120.0
TCG
174.0
165.0
155.0
40
CMP
11.4
12.1
13.1
SDT
104.0
113.0
122.0
TCG
190.0
181.0
170.0
45
CMP
11.9
12.6
13.7
SDT
106.0
115.0
124.0
TCG
209.0
197.0
186.0
50
CMP
12.1
13.1
14.2
SDT
110.0
118.0
127.0

Entering
100
97.3
11.3
123.0
110.0
11.8
123.0
123.0
12.3
123.0
137.0
12.9
125.0
150.0
13.5
127.0
165.0
14.1
129.0
180.0
14.8
131.0

Condenser (F)
105
115
93.6
86.4
11.6
12.1
128.0
138.0
106.0
98.3
12.2
12.8
128.0
138.0
119.0
110.0
12.7
13.4
128.0
138.0
132.0
123.0
13.3
14.1
129.0
139.0
145.0
136.0
14.0
14.8
131.0
140.0
160.0
150.0
14.6
15.5
133.0
142.0
175.0
163.0
15.3
16.3
136.0
144.0

125
79.1
12.7
148.0
90.5
13.5
148.0
101.5
14.1
148.0
114.0
14.9
149.0
126.5
15.7
149.0
140.0
16.4
151.0
151.5
17.4
153.0

NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

21

Performance data — 38AH024-034/40RM (cont)
COMBINATION RATINGS — SI
38AH024 AND 40RM016
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
2100/0.06
2800/0.10
3500/0.12
Evaporator Air — Ewb (C)
22
20
16
22
20
16
22
20
16
63.9 59.4 53.2 67.3 62.9 56.9 69.8 64.9 59.2
32.7 37.7 53.2 36.4 43.2 56.9 40.1 48.3 59.2
12.18 11.90 11.52 12.39 12.11 11.75 12.54 12.24 11.89
62.2 57.6 51.7 65.4 61.0 55.3 67.8 63.0 57.6
32.0 36.9 51.7 35.7 42.4 55.3 39.4 47.3 57.6
13.06 12.78 12.40 13.26 12.99 12.63 13.41 13.11 12.77
60.4 56.0 50.3 63.5 59.2 53.7 65.8 61.1 56.0
31.4 36.2 50.3 35.0 41.5 53.7 38.7 46.3 56.0
13.89 13.51 13.01 14.16 13.79 13.31 14.36 13.95 13.51
58.6 54.2 48.8 61.5 57.3 52.1 63.7 59.1 54.4
30.7 35.4 48.8 34.2 40.6 52.1 38.0 45.3 54.4
14.91 14.51 14.02 15.17 14.79 14.32 15.37 14.96 14.52
56.7 52.3 47.0 59.5 55.2 50.3 61.7 57.1 52.5
30.0 34.6 47.0 33.5 39.7 50.3 37.3 44.3 52.5
15.84 15.34 14.74 16.15 15.67 15.10 16.40 15.88 15.36
54.8 50.5 45.5 57.3 53.2 48.6 59.5 55.0 50.8
29.2 33.8 45.5 32.8 38.8 48.6 36.5 43.2 50.8
16.73 16.11 15.40 17.09 16.50 15.84 17.40 16.76 16.16
52.8 48.6 43.8 55.1 51.1 46.8 57.2 52.9 49.0
28.5 32.9 43.8 32.0 37.8 46.8 35.7 42.1 49.0
17.72 17.09 16.38 18.07 17.47 16.82 18.39 17.73 17.15
50.8 46.6 42.1 53.0 49.0 44.9 55.0 50.7 47.1
27.7 32.1 42.1 31.2 36.9 44.9 35.0 41.0 47.1
18.71 18.07 17.37 19.05 18.44 17.81 19.37 18.70 18.14

38AH024 AND 40RM024
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
2900/0.06
3800/0.10
4700/0.12
Evaporator Air — Ewb (C)
22
20
16
22
20
16
22
20
16
71.3 66.0 59.9 74.4 68.9 63.5 76.4 71.3 66.3
38.0 45.1 59.9 43.1 52.1 63.5 47.6 58.3 66.3
12.63 12.31 11.93 12.82 12.48 12.15 12.94 12.63 12.32
69.2 64.0 58.1 72.2 66.9 61.7 74.1 69.2 64.5
37.2 44.3 58.1 42.3 51.2 61.7 46.8 57.3 64.5
13.50 13.18 12.81 13.69 13.35 13.03 13.81 13.50 13.20
67.1 62.0 56.4 69.9 64.7 59.9 71.7 66.9 62.6
36.3 43.5 56.4 41.5 50.2 59.9 45.9 56.2 62.6
14.48 14.03 13.55 14.72 14.27 13.84 14.87 14.46 14.08
65.0 59.9 54.7 67.5 62.5 58.0 69.2 64.6 60.7
35.5 42.6 54.7 40.6 49.2 58.0 45.1 55.2 60.7
15.49 15.03 14.55 15.72 15.27 14.86 15.87 15.46 15.10
62.9 57.8 52.7 65.4 60.4 56.1 67.0 62.4 58.7
34.7 41.8 52.7 39.8 48.3 56.1 44.3 54.2 58.7
16.54 15.96 15.38 16.82 16.26 15.76 17.00 16.49 16.06
60.6 55.6 50.9 62.9 58.1 54.1 64.4 60.0 56.7
33.8 40.9 50.9 39.0 47.3 54.1 43.4 53.1 56.7
17.56 16.84 16.17 17.89 17.20 16.63 18.10 17.47 17.00
58.2 53.4 48.9 60.4 55.8 52.1 61.8 57.5 54.6
32.8 40.0 48.9 38.0 46.2 52.1 42.5 21.9 54.6
18.54 17.80 17.14 18.86 18.17 17.61 19.07 18.43 17.99
56.0 51.1 46.9 58.0 53.5 50.0 59.3 55.1 52.5
31.9 39.0 46.9 37.2 45.2 50.0 41.6 50.8 52.5
19.51 18.76 18.12 19.82 19.12 18.60 20.02 19.38 18.97

LEGEND
BF
— Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
Ldb — Leaving Dry Bulb
Lwb — Leaving Wet Bulb
SHC — Sensible Heating Capacity (kW)
TC
— Total Capacity (kW)
NOTES:
1. All combination ratings are based on refrigerant R-22.
2. Direct interpolation is permissible. Do not extrapolate.
3. The SHC is based on 26.7 C db temperature of air entering the indoor unit. At
any other temperature, correct the SHC reading from the table of cooling capacities as follows:
Correction factor = 1.23 x 10-3 x (1 − BF) x (db − 26.7)
Above 26.7 C, add SHC correction to SHC. Below 26.7 C, subtract SHC correction from SHC.

22

38AH024 AND 40RM028
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
4700/0.10
5900/0.12
Evaporator Air — Ewb (C)
16
22
20
16
22
20
16
65.0 79.7 73.4 68.9 81.2 76.1 72.2
65.0 49.3 60.1 68.9 55.2 67.6 72.2
12.24 13.14 12.76 12.48 13.24 12.92 12.68
63.1 77.4 71.1 67.0 78.8 73.7 70.2
63.1 48.5 59.1 67.0 54.4 66.6 70.2
13.12 14.01 13.62 13.36 14.10 13.78 13.56
61.1 74.8 68.7 65.0 76.1 71.2 68.1
61.1 47.6 58.1 65.0 53.5 65.5 68.1
13.96 15.15 14.62 14.29 15.26 14.83 14.56
59.1 72.2 66.3 62.9 73.4 68.7 66.0
59.1 46.7 57.0 62.9 52.5 64.3 66.0
14.96 16.15 15.61 15.30 16.26 15.83 15.58
57.1 69.9 64.0 60.9 71.1 66.4 64.0
57.1 45.9 56.0 60.9 51.8 63.3 64.0
15.88 17.34 16.66 16.31 17.47 16.94 16.66
55.0 67.2 61.4 58.7 68.3 63.7 61.7
55.0 44.9 54.9 58.7 50.8 62.1 61.7
16.76 18.50 17.67 17.28 18.65 18.00 17.72
52.8 64.4 58.8 56.4 65.4 61.0 59.4
52.8 43.9 53.8 56.4 49.8 60.9 59.4
17.72 19.46 18.62 18.26 19.60 18.95 18.71
50.7 61.8 56.3 54.2 62.7 58.4 57.1
50.7 43.0 52.7 54.2 48.9 58.1 57.1
18.69 20.41 19.55 19.24 20.54 19.89 19.69

3500/0.06
22
77.3
43.2
13.00
75.1
42.4
13.87
72.8
41.5
14.97
70.4
40.6
15.98
68.3
39.9
17.15
65.8
38.9
18.30
63.2
38.0
19.28
60.8
37.1
20.25

20
70.6
51.6
12.58
68.1
50.9
13.43
65.5
50.2
14.34
62.9
49.5
15.30
60.4
48.8
16.25
57.7
48.0
17.14
55.0
47.2
18.04
52.3
46.5
18.94

38AH028 AND 40RM024
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
3800/0.10
4700/0.12
Evaporator Air — Ewb (C)
16
22
20
16
22
20
16
64.7 81.1 75.1 68.6 83.5 77.9 71.6
64.7 45.5 54.9 68.6 50.1 61.3 71.6
14.25 15.42 14.99 14.53 15.59 15.20 14.75
63.2 79.1 73.2 67.0 81.3 75.9 70.0
63.2 44.8 54.0 67.0 49.3 60.4 70.0
15.58 16.46 16.14 15.79 16.59 16.28 15.96
61.6 76.7 71.1 65.3 78.8 73.6 68.2
61.6 43.9 53.1 65.3 48.4 59.3 68.2
16.44 17.62 17.18 16.72 17.79 17.38 16.95
59.8 74.4 68.9 63.4 76.4 71.4 66.3
59.8 43.1 52.1 63.4 47.6 58.3 66.3
17.36 18.82 18.27 17.72 19.02 18.52 18.01
58.0 72.1 66.7 61.5 74.0 69.0 64.3
58.0 42.2 51.1 61.5 46.7 57.2 64.3
18.23 19.98 19.32 18.67 20.22 19.60 19.02
56.2 69.6 64.5 59.6 71.4 66.7 62.4
56.2 41.4 50.1 59.6 45.8 56.1 62.4
19.39 21.15 20.47 19.84 21.38 20.76 20.19
54.4 67.3 62.3 57.8 68.9 64.3 60.4
54.4 40.5 49.1 57.8 45.0 21.9 60.4
20.35 22.10 21.42 20.80 22.33 21.70 21.17
52.4 64.3 59.6 55.6 65.7 61.5 58.1
52.4 39.4 47.9 55.6 43.9 53.7 58.1
21.49 24.15 23.10 22.20 24.48 23.52 22.76

2900/0.06
22
77.4
40.4
15.16
75.6
39.7
16.26
73.4
38.8
17.36
71.3
38.0
18.51
69.1
37.1
19.61
66.9
36.2
20.78
64.7
35.4
21.75
62.0
34.3
23.63

20
71.9
47.5
14.77
70.1
46.8
15.96
68.1
45.9
16.95
66.0
45.1
17.98
63.9
44.2
18.96
61.7
43.4
20.11
59.6
42.5
21.06
57.2
41.5
22.55

4. Gross capacities shown do not include a deduction for evaporator-fan motor
heat.
5. Formulas (cooling)
sensible heat capacity (kW)
1.23 x 10−3 x (L/s)
tlwb = wet-bulb temperature corresponding to enthalpy of air leaving
evaporator coil (hlwb)
total capacity (kW)
hlwb = hewb −
1.20 x 10−3 x (L/s)
tldb = tedb −

where hewb = enthalpy of air entering evaporator coil (kJ/kg).
6. Combination ratings are based on a 1.1° C line loss. For a close-coupled system (less than 4.5 m), add 2% to ratings. Piping sizes in Refrigerant Pipe Sizes
table on page 40 are based on 1.1° C line loss.

COMBINATION RATINGS — SI (cont)
38AH028 AND 40RM028
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
3500/0.06
4700/0.10
5900/0.12
Evaporator Air — Ewb (C)
22
20
16
22
20
16
22
20
16
84.1 78.3 70.6 87.3 80.6 74.8 89.3 83.5 78.2
45.8 53.8 70.6 52.0 63.2 74.8 57.9 70.9 78.2
15.64 15.22 14.67 15.87 15.39 14.97 16.01 15.60 15.22
82.1 75.9 68.9 85.0 78.4 73.0 86.9 81.3 76.4
45.0 53.1 68.9 51.2 62.3 73.0 57.1 69.9 76.4
16.63 16.28 15.89 16.79 16.42 16.12 16.89 16.58 16.31
79.6 73.2 67.0 82.3 75.9 70.9 83.9 78.6 74.3
44.1 52.3 67.0 50.2 61.2 70.9 56.1 68.7 74.3
17.85 17.35 16.86 18.06 17.56 17.17 18.19 17.77 17.43
77.4 70.6 65.0 79.9 73.5 68.9 81.4 76.2 72.2
43.3 51.6 65.0 49.4 60.1 68.9 55.2 67.7 72.2
19.12 18.44 17.88 19.37 18.73 18.27 19.52 19.00 18.60
75.0 67.9 63.0 77.2 71.0 66.8 78.7 73.6 70.1
42.4 50.9 63.0 48.4 59.1 66.8 54.3 66.5 70.1
20.35 19.46 18.84 20.63 19.85 19.33 20.81 20.18 19.74
72.5 65.2 60.9 74.5 68.5 64.7 75.9 71.0 67.9
41.4 50.1 60.9 47.5 58.0 64.7 53.4 65.3 67.9
21.52 20.56 20.00 21.78 20.99 20.50 21.96 21.32 20.92
70.1 62.6 58.9 71.9 66.0 62.6 73.1 68.4 65.7
40.6 49.4 58.9 46.6 56.9 62.6 52.4 64.2 65.7
22.49 21.46 20.96 22.73 21.92 21.47 22.90 22.25 21.89
67.0 59.4 56.5 68.5 62.9 60.1 69.5 65.1 63.0
39.4 48.5 56.5 45.4 55.6 60.1 51.2 62.8 63.0
24.77 23.07 22.41 25.10 23.84 23.21 25.33 24.34 23.87

38AH028 AND 40RM034
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
4250/0.06
5650/0.10
7050/0.12
Evaporator Air — Ewb (C)
22
20
16
22
20
16
22
20
16
90.2 81.9 75.9 92.7 85.5 80.5 94.4 88.5 84.3
50.5 61.0 75.9 58.3 70.8 80.5 65.4 79.8 84.3
16.07 15.48 15.05 16.25 15.73 15.38 16.37 15.95 15.63
87.8 79.6 73.9 90.2 83.1 78.5 91.7 86.0 82.2
49.6 60.0 73.9 57.4 69.7 78.5 64.5 78.7 82.2
16.95 16.49 16.17 17.08 16.68 16.43 17.16 16.84 16.63
85.0 76.9 71.7 87.1 80.2 76.1 88.5 82.9 79.7
48.5 58.9 71.7 56.3 68.4 76.1 63.4 77.4 79.7
18.27 17.64 17.23 18.43 17.89 17.58 18.55 18.11 17.86
82.5 74.4 69.5 84.4 77.6 73.9 85.8 80.3 77.5
47.6 57.9 69.5 55.4 67.3 73.9 62.5 76.2 77.5
19.63 18.82 18.33 19.82 19.14 18.77 19.96 19.41 19.13
79.9 71.7 67.3 81.5 74.9 71.6 82.7 77.5 75.1
46.5 56.8 67.3 54.4 66.1 71.6 61.5 74.9 75.1
20.96 19.94 19.38 21.17 20.33 19.92 21.32 20.66 20.36
77.1 69.0 65.0 78.6 72.1 69.2 79.7 74.6 72.6
45.5 55.6 65.0 53.3 64.9 69.2 60.5 73.6 72.6
22.12 21.07 20.53 22.31 21.46 21.08 22.45 21.79 21.53
74.4 66.4 62.7 75.7 69.4 66.8 76.7 71.8 70.1
44.4 54.6 62.7 52.3 63.7 66.8 59.5 72.4 70.1
23.08 21.99 21.48 23.25 22.39 22.04 23.38 22.72 22.49
70.9 63.2 60.0 71.8 65.9 63.8 72.6 68.1 67.0
43.1 53.2 60.0 51.0 62.2 63.8 58.2 68.1 67.0
25.63 23.91 23.19 25.85 24.51 24.05 26.03 25.02 24.76

LEGEND
BF
— Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
Ldb — Leaving Dry Bulb
Lwb — Leaving Wet Bulb
SHC — Sensible Heating Capacity (kW)
TC
— Total Capacity (kW)
NOTES:
1. All combination ratings are based on refrigerant R-22.
2. Direct interpolation is permissible. Do not extrapolate.
3. The SHC is based on 26.7 C db temperature of air entering the indoor unit. At
any other temperature, correct the SHC reading from the table of cooling capacities as follows:
Correction factor = 1.23 x 10-3 x (1 − BF) x (db − 26.7)
Above 26.7 C, add SHC correction to SHC. Below 26.7 C, subtract SHC correction from SHC.

38AH034 AND 40RM028
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
4700/0.10
5900/0.12
Evaporator Air — Ewb (C)
16
22
20
16
22
20
16
78.1 97.3 90.2 82.5 99.8 93.5 86.2
78.1 55.5 67.3 82.5 61.4 75.3 86.2
17.63 19.13 18.57 17.97 19.32 18.83 18.26
76.1 94.8 87.7 80.4 97.2 90.9 84.1
76.1 54.6 66.2 80.4 60.5 74.2 84.1
18.86 20.35 19.79 19.21 20.54 20.04 19.50
74.2 92.2 85.3 78.5 94.4 88.3 82.1
74.2 53.7 65.2 78.5 59.6 73.1 82.1
19.97 21.77 21.08 20.40 21.99 21.38 20.76
72.1 89.4 82.6 76.4 91.5 85.6 79.9
72.1 52.7 64.0 76.4 58.6 71.9 79.9
21.44 23.23 22.52 21.87 23.44 22.83 22.24
70.1 86.7 80.0 74.2 88.7 82.9 77.7
70.1 51.8 62.9 74.2 57.7 70.7 77.7
22.55 24.63 23.79 23.07 24.87 24.15 23.50
67.9 84.0 77.3 72.1 85.8 80.2 75.5
67.9 50.8 61.8 72.1 56.7 69.5 75.5
23.71 26.09 25.11 24.32 26.35 25.53 24.83
65.7 80.9 74.5 69.8 82.6 77.2 73.1
65.7 49.7 60.6 69.8 55.6 68.1 73.1
24.94 27.62 26.49 25.65 27.91 26.97 26.24
63.4 78.2 71.8 67.4 79.7 74.5 70.7
63.4 48.8 59.4 67.4 54.7 66.9 70.7
26.51 29.16 28.01 27.23 29.44 28.50 27.83

3500/0.06
22
93.1
49.1
18.80
90.8
48.2
20.03
88.5
47.4
21.40
86.0
46.5
22.88
83.6
45.6
24.24
81.1
44.6
25.66
78.4
43.6
27.17
75.8
42.7
28.74

20
88.9
56.8
18.47
86.1
56.0
19.66
83.4
55.2
20.89
80.5
54.4
22.30
77.6
53.6
23.49
74.7
52.8
24.72
71.7
51.9
25.99
68.7
51.1
27.45

38AH034 AND 40RM034
Temp (C)
Air
Entering
Condenser
24

28

32

36

40

44

48

52

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — L/s/BF
5650/0.10
7050/0.12
Evaporator Air — Ewb (C)
16
22
20
16
22
20
16
84.4 103.9 96.2 89.4 106.2 99.5 93.4
84.4 62.2 75.4 89.4 69.3 84.8 93.4
18.12 19.65 19.04 18.51 19.82 19.30 18.82
82.1 101.2 93.4 87.1 103.3 96.7 91.1
82.1 61.2 74.2 87.1 68.3 83.5 91.1
19.34 20.86 20.24 19.74 21.02 20.50 20.06
80.0 98.2 90.7 84.8 100.1 93.8 88.8
80.0 60.2 73.0 84.8 67.3 82.2 88.8
20.55 22.37 21.62 21.03 22.56 21.93 21.43
77.6 95.1 87.7 82.4 96.9 90.8 86.2
77.6 59.1 71.7 82.4 66.2 80.9 86.2
22.01 23.82 23.05 22.50 24.00 23.37 22.90
75.3 92.1 84.8 80.0 93.8 87.8 83.8
75.3 58.1 70.5 80.0 65.2 79.5 83.8
23.20 25.30 24.39 23.78 25.51 24.77 24.26
72.9 89.1 81.9 77.5 90.6 84.8 81.2
72.9 57.0 69.2 77.5 64.1 78.2 81.2
24.45 26.84 25.78 25.13 27.07 26.21 25.68
70.4 85.6 78.7 74.9 87.0 81.5 78.5
70.4 55.8 67.8 74.9 62.9 76.7 78.5
25.77 28.45 27.24 26.55 28.70 27.72 27.19
67.9 82.6 75.8 72.3 83.9 78.5 75.9
67.9 54.7 66.5 72.3 61.9 75.4 75.9
27.31 29.97 28.74 28.11 30.20 29.22 28.75

4250/0.06
22
100.3
54.4
19.36
97.8
53.4
20.59
95.1
52.4
22.06
92.3
51.3
23.53
89.6
50.3
24.99
86.8
49.2
26.50
83.7
48.0
28.11
80.9
46.9
29.65

20
92.2
65.3
18.73
89.6
64.2
19.93
86.9
63.1
21.24
84.1
61.9
22.67
81.3
60.7
23.95
78.5
59.6
25.28
75.5
58.3
26.66
72.6
57.1
28.16

4. Gross capacities shown do not include a deduction for evaporator-fan motor
heat.
5. Formulas (cooling)
sensible heat capacity (kW)
1.23 x 10−3 x (L/s)
tlwb = wet-bulb temperature corresponding to enthalpy of air leaving
evaporator coil (hlwb)
total capacity (kW)
hlwb = hewb −
1.20 x 10−3 x (L/s)
tldb = tedb −

where hewb = enthalpy of air entering evaporator coil (kJ/kg).
6. Combination ratings are based on a 1.1° C line loss. For a close-coupled system (less than 4.5 m), add 2% to ratings. Piping sizes in Refrigerant Pipe Sizes
table on page 40 are based on 1.1° C line loss.

23

Performance data — 38AH024-034/40RM (cont)
COMBINATION RATINGS — ENGLISH
38AH024 AND 40RM016
Temp (F)
Air
Entering
Condenser
85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

38AH024 AND 40RM028

Evaporator Air — Cfm/BF
4500/0.03
6000/0.05
7500/0.08
Evaporator Air — Ewb (F)
72
67
62
72
67
62
72
67
62
211.3 191.6 173.6 221.7 203.6 186.3 229.2 211.4 195.4
106.1 131.1 166.6 118.5 151.3 186.3 130.3 169.2 195.4
13.46 13.13 12.83 13.63 13.33 13.04 13.75 13.46 13.19
202.6 184.4 167.6 211.9 195.4 179.6 218.9 202.5 188.3
103.0 127.9 161.4 114.9 147.4 179.6 126.6 164.7 188.3
14.70 14.28 13.90 14.91 14.53 14.17 15.06 14.69 14.37
198.0 180.5 164.3 206.8 191.0 175.8 213.5 197.8 184.4
101.4 126.1 158.5 112.9 145.2 175.8 124.7 162.4 184.4
15.32 14.82 14.36 15.57 15.12 14.69 15.75 15.31 14.93
193.2 176.4 160.8 201.5 186.4 172.0 208.0 192.9 180.3
99.7 124.3 155.4 111.0 143.0 172.0 122.7 160.0 180.3
16.00 15.51 15.05 16.25 15.80 15.38 16.43 15.99 15.62
183.5 167.7 153.1 191.0 177.0 163.7 197.0 183.0 171.8
96.3 120.4 148.6 107.0 138.5 163.7 118.8 155.0 171.8
17.26 16.61 16.01 17.57 17.00 16.45 17.82 17.24 16.78
173.2 158.7 145.1 179.8 167.2 155.1 185.4 172.5 162.9
92.7 116.3 141.6 102.8 133.7 155.1 114.6 149.8 162.9
18.63 17.91 17.23 18.96 18.33 17.73 19.23 18.60 18.11

38AH024 AND 40RM024
Temp (F)
Air
Entering
Condenser
85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

LEGEND
BF
— Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
Ldb — Leaving Dry Bulb
Lwb — Leaving Wet Bulb
SHC — Sensible Heating Capacity (1000 Btuh)
TC
— Total Capacity (1000 Btuh)
NOTES:
1. All combination ratings are based on refrigerant R-22.
2. Direct interpolation is permissible. Do not extrapolate.
3. The SHC is based on 80 F dry-bulb temperature of air entering the evaporator
coil.
Below 80 F dry-bulb, subtract (correction factor × cfm) from SHC.
Above 80 F dry bulb, add (correction factor × cfm) to SHC.

79
81

0.10
0.20
0.30

0.99
0.88
0.77

ENTERING-AIR DRY-BULB TEMP (F)
78
77
76
75
under 75
82
83
84
85
over 85
Correction Factor
1.98
2.97
3.96
4.95
Use formula
1.76
2.64
3.52
4.40
shown below.
1.54
2.31
3.08
3.85

Interpolation is permissible.
Correction Factor = 1.1 x (1 − BF) x (db − 80).

24

85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — Cfm/BF
10,000/0.06
12,500/0.08
Evaporator Air — Ewb (F)
62
72
67
62
72
67
62
214.3 261.8 239.0 229.0 266.4 248.1 241.2
212.5 160.6 212.9 229.0 180.5 240.6 241.2
13.50 14.30 13.92 13.75 14.37 14.07 13.95
205.3 248.7 227.1 219.4 252.6 235.7 230.9
204.2 155.9 208.0 219.4 175.9 235.2 230.9
14.76 15.74 15.25 15.08 15.83 15.45 15.34
200.5 242.1 221.0 214.3 245.7 229.4 225.6
199.9 153.6 205.5 214.3 173.6 229.4 225.6
15.39 16.56 15.97 15.78 16.67 16.21 16.10
195.6 235.3 214.8 209.1 238.6 223.0 220.1
195.3 151.2 202.9 209.1 171.2 223.0 220.1
16.07 17.24 16.63 16.47 17.34 16.88 16.79
185.6 222.6 202.6 198.8 225.4 210.6 209.5
186.2 146.8 197.9 198.8 166.8 210.6 209.5
17.35 18.87 18.05 17.89 18.99 18.38 18.33
175.0 208.8 189.8 187.7 211.2 197.4 197.9
176.5 141.9 189.8 187.7 162.1 197.4 197.9
18.72 20.40 19.45 19.35 20.52 19.83 19.86

7500/0.04
72
252.4
140.1
14.14
240.2
135.6
15.55
234.0
133.3
16.34
227.7
131.0
17.01
215.5
126.6
18.58
202.4
121.8
20.08

67
229.4
181.8
13.76
218.3
177.3
15.05
212.6
175.0
15.73
206.7
172.6
16.40
195.1
167.9
17.74
182.9
163.0
19.11

38AH028 AND 40RM024

Evaporator Air — Cfm/BF
6,000/0.03
8,000/0.06
10,000/0.07
Evaporator Air — Ewb (F)
72
67
62
72
67
62
72
67
62
234.5 214.7 196.5 244.6 224.8 209.7 249.6 232.7 220.2
123.6 158.1 191.1 140.2 183.3 209.7 154.6 206.1 220.2
13.84 13.51 13.21 14.01 13.68 13.43 14.09 13.81 13.60
223.9 205.4 188.9 233.0 214.5 201.4 237.2 221.8 211.5
119.5 154.3 184.5 136.0 179.0 201.4 150.2 201.1 211.5
15.18 14.76 14.38 15.39 14.96 14.67 15.48 15.13 14.90
218.4 200.4 184.7 227.0 209.1 196.9 230.9 216.2 206.8
117.4 152.2 180.9 133.9 176.7 196.9 148.0 198.6 206.8
15.89 15.39 14.94 16.14 15.63 15.29 16.25 15.83 15.57
212.7 195.4 180.4 220.9 203.5 192.4 224.4 210.4 202.0
115.3 150.2 177.1 131.7 174.4 192.4 145.7 195.9 202.0
16.57 16.06 15.62 16.82 16.30 15.98 16.92 16.51 16.26
201.6 185.1 171.4 209.2 192.5 183.0 212.1 199.1 192.3
111.0 145.9 169.3 127.4 169.7 183.0 141.4 190.8 192.3
18.01 17.33 16.76 18.32 17.63 17.24 18.44 17.91 17.63
189.8 174.3 162.0 196.6 180.8 173.1 198.9 187.1 182.0
106.5 141.5 161.1 122.8 164.8 173.1 136.7 185.3 182.0
19.45 18.68 18.07 19.79 19.01 18.62 19.90 19.32 19.07

BYPASS
FACTOR

Temp (F)
Air
Entering
Condenser

Temp (F)
Air
Entering
Condenser
85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — Cfm/BF
8,000/0.06
10,000/0.07
Evaporator Air — Ewb (F)
62
72
67
62
72
67
62
215.7 267.1 247.0 228.8 273.1 255.0 239.4
207.8 148.3 192.7 228.8 162.9 216.3 239.4
15.64 16.93 16.42 15.97 17.08 16.63 16.24
206.6 256.5 236.5 219.8 262.0 244.5 230.4
200.0 144.5 188.3 219.8 159.0 211.5 230.4
17.22 18.46 17.96 17.54 18.60 18.16 17.81
202.1 251.2 231.3 215.3 256.5 239.3 225.9
196.1 142.6 186.1 215.3 157.0 209.1 225.9
17.84 19.27 18.69 18.22 19.42 18.92 18.53
198.2 243.9 225.2 210.7 248.5 232.6 220.8
192.7 139.9 183.5 210.7 154.2 206.1 220.8
18.47 20.13 19.45 18.93 20.30 19.72 19.29
189.8 232.3 214.5 201.9 236.3 221.6 211.6
185.3 135.8 179.0 201.9 149.9 201.0 211.6
19.99 21.63 20.94 20.46 21.78 21.22 20.83
167.0 203.9 187.4 178.6 206.6 193.9 187.8
165.5 125.5 167.5 178.6 139.4 188.4 187.8
21.88 23.41 22.72 22.36 23.52 23.00 22.74

6,000/0.03
72
256.2
131.8
16.65
246.0
127.9
18.20
240.9
126.0
18.97
234.4
123.5
19.79
223.6
119.4
21.29
196.6
109.1
23.11

67
235.7
166.7
16.14
225.8
162.6
17.70
220.9
160.6
18.38
215.6
158.5
19.10
205.8
154.4
20.61
180.3
144.0
22.43

4. Gross capacities shown do not include a deduction for evaporator-fan motor
heat.
5. Formulas
tldb = tedb −

sensible heat capacity (Btuh)

1.1 x cfm
tlwb = wet-bulb temperature corresponding to enthalpy of air leaving
evaporator coil (hlwb)

hlwb = hewb −

total capacity (Btuh)
4.5 cfm

where hewb = enthalpy of air entering evaporator coil
6. Combination ratings are based on a 2° F line loss. For a close-coupled system
(less than 15 ft), add 2% to ratings. Piping sizes in Refrigerant Pipe Sizes table
on page 40 are based on 2° F line loss.

COMBINATION RATINGS — ENGLISH (cont)
38AH028 AND 40RM028
Temp (F)
Air
Entering
Condenser
85

95

100

105

115

115

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

38AH034 AND 40RM028

Evaporator Air — Cfm/BF
7,500/0.04
10,000/0.06
12,500/0.08
Evaporator Air — Ewb (F)
72
67
62
72
67
62
72
67
62
275.2 252.7 234.7 285.3 262.8 249.2 290.6 271.7 261.4
148.5 191.1 231.2 168.8 222.6 249.2 188.5 250.9 261.4
17.13 16.57 16.12 17.38 16.82 16.48 17.52 17.04 16.78
264.5 241.8 225.1 274.3 251.6 239.7 279.2 260.6 251.9
144.5 186.7 222.4 164.9 218.0 239.7 184.7 246.1 251.9
18.66 18.09 17.68 18.91 18.34 18.04 19.03 18.56 18.35
259.1 236.3 220.3 268.7 246.0 235.0 273.5 255.0 247.2
142.6 184.5 218.0 163.0 215.7 235.0 182.8 243.6 247.2
19.50 18.83 18.37 19.78 19.12 18.79 19.92 19.38 19.15
251.2 229.6 215.2 260.0 238.6 229.2 264.3 247.1 240.8
139.7 181.8 213.4 159.9 212.7 229.2 179.8 240.2 240.8
20.40 19.61 19.09 20.72 19.94 19.60 20.87 20.25 20.02
239.3 218.3 205.6 247.4 226.7 219.2 251.1 234.9 230.4
135.3 177.2 204.6 155.5 207.8 219.2 175.4 234.8 230.4
21.89 21.09 20.60 22.21 21.41 21.12 22.35 21.73 21.55
210.1 189.8 180.9 217.0 197.1 194.0 219.6 205.1 204.6
124.6 165.7 181.9 144.8 195.7 194.0 164.9 221.8 204.6
23.67 22.82 22.45 23.96 23.13 23.00 24.07 23.46 23.44

38AH028 AND 40RM034
Temp (F)
Air
Entering
Condenser
85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

LEGEND
BF
— Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
Ldb — Leaving Dry Bulb
Lwb — Leaving Wet Bulb
SHC — Sensible Heating Capacity (1000 Btuh)
TC
— Total Capacity (1000 Btuh)
NOTES:
1. All combination ratings are based on refrigerant R-22.
2. Direct interpolation is permissible. Do not extrapolate.
3. The SHC is based on 80 F dry-bulb temperature of air entering the evaporator
coil.
Below 80 F dry-bulb, subtract (correction factor × cfm) from SHC.
Above 80 F dry bulb, add (correction factor × cfm) to SHC.

79
81

0.10
0.20
0.30

0.99
0.88
0.77

85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — Cfm/BF
10,000/0.06
12,500/0.08
Evaporator Air — Ewb (F)
62
72
67
62
72
67
62
258.8 320.5 295.3 274.6 327.8 305.2 288.2
253.3 181.2 236.0 274.6 200.9 265.5 288.2
19.32 20.81 20.20 19.70 20.99 20.44 20.03
249.2 307.9 283.1 264.9 314.6 292.9 278.2
244.5 176.8 231.0 264.9 196.5 260.2 278.2
21.06 22.95 22.15 21.57 23.17 22.47 22.00
244.4 301.0 276.7 259.9 307.3 286.3 272.9
240.2 174.3 228.3 259.9 194.1 257.3 272.9
21.88 23.77 22.96 22.40 23.98 23.28 22.83
239.3 295.0 270.6 254.8 301.0 280.3 267.8
235.4 172.2 225.8 254.8 192.0 254.6 267.8
22.77 24.83 23.93 23.34 25.05 24.28 23.82
229.4 281.4 257.8 244.5 286.8 267.2 257.2
226.4 167.5 220.6 244.5 187.3 248.9 257.2
24.52 26.77 25.75 25.18 27.00 26.15 25.72
219.0 267.5 244.6 233.7 272.3 253.7 246.0
216.8 162.6 215.2 233.7 182.4 243.1 246.0
26.36 28.76 27.63 27.09 29.00 28.08 27.70

7,500/0.04
72
307.8
160.5
20.50
295.9
156.1
22.57
289.5
153.7
23.38
283.7
151.6
24.41
271.0
146.9
26.32
257.9
142.1
28.29

67
283.0
203.4
19.90
271.4
198.7
21.78
265.4
196.3
22.58
259.5
193.9
23.52
247.4
189.0
25.30
234.9
184.0
27.15

38AH034 AND 40RM034

Evaporator Air — Cfm/BF
9,000/0.04
12,000/0.06
15,000/0.08
Evaporator Air — Ewb (F)
72
67
62
72
67
62
72
67
62
291.7 266.7 251.6 300.7 276.9 267.5 305.2 286.3 280.5
162.4 214.9 249.7 189.9 251.2 267.5 211.7 283.4 280.5
17.54 16.92 16.54 17.77 17.17 16.94 17.88 17.41 17.26
280.4 255.1 241.3 289.1 265.1 257.4 293.2 274.5 270.3
158.1 210.3 240.4 186.0 246.5 257.4 207.7 274.5 270.3
19.06 18.43 18.08 19.28 18.68 18.48 19.38 18.91 18.81
274.7 249.3 236.2 283.2 259.2 252.3 287.2 268.7 265.2
156.0 208.0 235.8 184.0 244.1 252.3 205.7 268.7 265.2
19.95 19.21 18.83 20.20 19.50 19.30 20.32 19.78 19.68
265.5 241.5 229.9 273.2 250.6 245.1 276.7 259.5 257.4
152.5 204.9 230.1 180.6 240.6 245.1 202.2 259.5 257.4
20.92 20.04 19.62 21.20 20.38 20.18 21.32 20.70 20.62
252.4 229.1 219.2 259.4 237.6 234.0 262.4 246.2 245.8
147.5 200.0 220.4 175.9 235.4 234.0 197.5 246.2 245.8
22.40 21.50 21.12 22.67 21.83 21.69 22.78 22.16 22.14
221.1 198.5 192.2 226.8 206.2 206.4 228.9 214.4 217.6
135.6 187.9 195.9 164.9 206.2 206.4 186.3 214.4 217.6
24.13 23.19 22.92 24.37 23.51 23.52 24.45 23.85 23.98

BYPASS
FACTOR

Temp (F)
Air
Entering
Condenser

Temp (F)
Air
Entering
Condenser
85

95

100

105

115

125

TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW

Evaporator Air — Cfm/BF
12,000/0.06
15,000/0.08
Evaporator Air — Ewb (F)
62
72
67
62
72
67
62
279.6 340.3 313.3 297.3 346.7 324.0 311.8
275.2 203.3 265.9 297.3 225.6 300.0 311.8
19.82 21.29 20.64 20.25 21.44 20.89 20.60
268.9 326.5 300.0 286.3 332.2 310.4 300.5
265.4 198.6 260.5 286.3 220.7 294.0 300.5
21.70 23.55 22.70 22.26 23.73 23.03 22.71
263.3 318.6 292.8 280.4 324.0 303.0 294.4
260.4 196.0 257.6 280.4 218.0 290.8 294.0
22.51 24.35 23.49 23.08 24.53 23.83 23.55
257.8 312.3 286.4 275.0 317.5 296.6 288.9
255.4 193.9 255.0 275.0 215.8 287.9 288.9
23.45 25.47 24.51 24.09 25.66 24.89 24.60
246.6 297.3 272.3 263.2 301.8 282.1 276.7
245.2 188.8 249.4 263.2 210.6 281.6 276.7
25.26 27.45 26.37 25.98 27.65 26.80 26.56
234.8 282.0 257.8 251.1
—
267.4 264.1
234.6 183.6 243.5 251.1
—
267.4 264.1
27.14 29.48 28.28 27.95
—
28.76 28.59

9,000/0.04
72
328.6
176.4
21.00
315.5
171.4
23.19
308.2
168.7
24.01
302.1
166.3
25.09
287.9
161.0
27.05
273.5
155.5
29.06

67
301.1
228.6
20.34
288.3
223.5
22.32
281.5
220.8
23.12
275.2
218.3
24.10
261.8
213.0
25.92
247.9
207.5
27.79

4. Gross capacities shown do not include a deduction for evaporator-fan motor
heat.
5. Formulas
tldb = tedb −

sensible heat capacity (Btuh)

1.1 x cfm
tlwb = wet-bulb temperature corresponding to enthalpy of air leaving
evaporator coil (hlwb)

hlwb = hewb −

total capacity (Btuh)
4.5 cfm

where hewb = enthalpy of air entering evaporator coil
6. Combination ratings are based on a 2° F line loss. For a close-coupled system
(less than 15 ft), add 2% to ratings. Piping sizes in Refrigerant Pipe Sizes table
on page 40 are based on 2° F line loss.

ENTERING-AIR DRY-BULB TEMP (F)
78
77
76
75
under 75
82
83
84
85
over 85
Correction Factor
1.98
2.97
3.96
4.95
Use formula
1.76
2.64
3.52
4.40
shown below.
1.54
2.31
3.08
3.85

Interpolation is permissible.
Correction Factor = 1.1 x (1 − BF) x (db − 80).

25

Performance data — 38AH024-034/40RM (cont)
40RM COIL ACCESSORY HEATING CAPACITIES —
SI

UNIT AIRFLOW
40RM
(L/s)
2100
2800
3500
2900
3800
4700
3500
4700
5900
4250
5650
7050

016
024
028
034

1-ROW
STEAM*

2-ROW
HOT WATER COIL†
Water
PD
Cap. (kW) Ldb Cap. (kW) Ldb Flow (kPa)
(L/s)
117
61
120
62
2.6
13.3
129
53
137
55
3.0
16.2
140
48
154
51
3.3
19.5
135
53
150
58
3.3
15.6
140
46
170
52
3.7
18.6
146
41
191
49
4.1
22.3
149
50
189
60
4.1
16.9
166
44
218
53
4.7
20.8
183
41
247
50
5.4
25.4
164
47
215
57
4.7
18.5
180
41
247
51
5.4
22.8
196
38
278
48
6.0
27.7

LEGEND
Cap. — Capacity (kW)
Ldb — Leaving-Air Dry-Bulb Temp (C)
PD
— Pressure Drop (kPa)
*Based on 34.5 kPag steam, 15.6 C entering-air temperature. All steam
coils are non-freeze type.
†Based on 93.3 C entering-water temperature, 11.1 C water temperature drop, 15.6 C entering-air temperature.
NOTES:
1. Maximum operating limit for heating coils: 1207 kPag at 204.4 C.
Capacity (kW)
2. Leaving db = ent db (C) +
1.23 x 10-3 x L/s
3. See Heating Correction Factors table.

5

11

16

HOT
Ent Water
Temp
(C)
60
70
80
90
100
60
70
80
90
100
60
70
80
90
100

Steam Pressure
(kPag)
0
14
35

AIRFLOW
(Cfm)
4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
9,000
12,000
15,000

016
024
028
034

Entering-Air Temp (C)
4

10

16

20

25

0.72
0.87
1.02
1.17
1.32
0.65
0.80
0.95
1.10
1.26
0.56
0.72
0.87
1.02
1.18

0.64
0.79
0.94
1.09
1.24
0.56
0.72
0.87
1.02
1.18
0.48
0.63
0.79
0.94
1.10

0.55
0.71
0.86
1.01
1.16
0.48
0.63
0.79
0.94
1.09
0.39
0.55
0.70
0.86
1.02

0.50
0.65
0.80
0.95
1.10
0.42
0.58
0.73
0.89
1.04
0.33
0.49
0.65
0.81
0.97

0.43
0.58
0.73
0.89
1.04
0.35
0.51
0.66
0.82
0.97
0.26
0.42
0.58
0.74
0.90

STEAM COIL
Entering-Air Temp (C)
4
10
16
20
1.07
0.99
0.91
0.86
1.10
1.02
0.95
0.90
1.14
1.07
0.99
0.95

1-ROW
STEAM*
Cap. Ldb
402
141
458
129
479
118
458
129
487
115
499
105
511
122
575
112
626
106
560
117
621
107
670
101

2-ROW
HOT WATER COIL†
Cap.
Ldb Gpm
PD
412.0
145
41.2
4.5
471.0
133
47.1
5.5
529.0
125
52.9
6.6
506.0
138
50.6
5.1
584.0
128
58.4
6.3
652.0
120
65.2
7.5
649.0
140
64.9
5.7
752.0
130
75.2
7.1
842.0
122
84.2
8.5
735.0
136
73.5
6.2
850.0
126
85.0
7.8
950.0
119
95.0
9.3

LEGEND
Cap. — Capacity (Btuh in thousands)
Ldb — Leaving-Air Dry-Bulb Temp (F)
PD
— Pressure Drop (ft water)
*Based on 5 psig steam, 60 F entering-air temperature. All steam coils
are non-freeze type.
†Based on 200 F entering water, 20 F water temperature drop, 60 F
entering-air temperature.
NOTES:
1. Maximum operating limit for heating coils: 175 psig at 400 F.
Capacity (Btuh)
2. Leaving db = ent db (F) +
1.1 x cfm
3. See Heating Correction Factors table.

WATER COIL

25
0.80
0.84
0.89

NOTE: Multiply capacity given in the Coil Accessory Heating Capacities
table by the correction factor for conditions at which unit is actually
operating. Correct leaving-air temperature using formula in Note 2 of
Coil Accessory Heating Capacities table.

26

UNIT
40RM

40RM HEATING CORRECTION FACTORS —
ENGLISH

40RM HEATING CORRECTION FACTORS —
SI
Water Temp
Drop
(C)

40RM COIL ACCESSORY HEATING CAPACITIES —
ENGLISH

Water Temp
Drop
(F)
10

20

30

HOT
Ent Water
Temp
(F)
140
160
180
200
220
140
160
180
200
220
140
160
180
200
220

Steam Pressure
(psig)
0
2
5

WATER COIL
Entering-Air Temp (F)
40

50

60

70

80

0.72
0.89
1.06
1.22
1.39
0.64
0.81
0.98
1.15
1.32
0.56
0.74
0.91
1.08
1.25

0.64
0.81
0.98
1.15
1.32
0.57
0.74
0.91
1.08
1.25
0.49
0.66
0.83
1.00
1.18

0.57
0.74
0.90
1.07
1.24
0.49
0.66
0.83
1.00
1.17
0.41
0.58
0.76
0.93
1.10

0.49
0.66
0.83
1.00
1.17
0.41
0.58
0.75
0.93
1.10
0.33
0.51
0.68
0.85
1.03

0.41
0.58
0.75
0.92
1.09
0.33
0.51
0.68
0.85
1.02
0.24
0.43
0.60
0.78
0.95

STEAM COIL
Entering-Air Temp (F)
40
50
60
70
1.06
0.98
0.91
0.85
1.09
1.02
0.95
0.89
1.13
1.06
1.00
0.93

80
0.78
0.82
0.87

NOTE: Multiply capacity given in the Coil Accessory Heating Capacities
table by the correction factor for conditions at which unit is actually
operating. Correct leaving-air temperature using formula in Note 2 of
Coil Accessory Heating Capacities table.

40RM FAN PERFORMANCE DATA — 0-300 Pa ESP — SI
UNIT
40RM

016

024

028

034

AIRFLOW
(L/s)

0

50

2100

r/s
6.43

kW
0.37

r/s
8.19

kW
0.55

2450

7.51

0.57

9.06

0.77

EXTERNAL STATIC PRESSURE (Pa)
100
150
200
r/s
kW
r/s
kW
r/s
kW
9.65
0.73
10.90
0.92
12.10
1.11
10.40

0.97

250
r/s
kW
13.10
1.30

300
r/s
kW
14.10
1.50

11.60

1.18

12.70

1.39

13.70

1.60

14.60

1.81

2800

8.58

0.82

9.96

1.05

11.20

1.27

12.30

1.49

13.30

1.72

14.30

1.95

15.10

2.18

3150

9.65

1.14

10.90

1.38

12.00

1.63

13.10

1.87

14.00

2.12

14.90

2.36

15.80

2.61

3500

10.70

1.52

11.90

1.78

12.90

2.05

13.90

2.31

14.80

2.58

15.60

2.84

16.40

3.11

2900

8.58

0.86

9.96

1.09

11.20

1.32

12.30

1.55

13.30

1.78

14.20

2.01

15.10

2.25

3350

9.91

1.28

11.10

1.53

12.20

1.79

13.20

2.04

14.20

2.30

15.10

2.55

15.90

2.81

3800

11.30

1.81

12.30

2.09

13.30

2.37

14.30

2.64

15.10

2.93

16.00

3.21

16.80

3.49

4250

12.60

2.46

13.60

2.76

14.50

3.07

15.30

3.37

16.10

3.67

16.90

3.98

17.70

4.28

4700

13.90

3.24

14.80

3.57

15.60

3.90

16.40

4.22

17.20

4.55

17.90

4.88

18.60

5.21

3500

6.79

0.84

8.14

1.12

9.42

1.47

10.70

1.89

11.80

2.39

12.90

2.96

14.00

3.61

4100

7.95

1.29

9.12

1.60

10.20

1.96

11.30

2.38

12.40

2.86

13.40

3.40

14.30

4.00

4700

9.12

1.88

10.10

2.21

11.10

2.59

12.10

3.02

13.00

3.49

13.90

4.02

14.80

4.60

5300

10.30

2.62

11.20

3.00

12.10

3.37

12.90

3.81

13.80

4.29

14.60

4.82

15.40

5.38

5900

11.40

3.52

12.30

3.90

13.10

4.32

13.90

4.77

14.60

5.26

15.40

5.79

16.10

6.35

4250

7.86

1.33

8.99

1.63

10.10

1.97

11.10

2.37

12.20

2.83

13.20

3.34

14.10

3.92

4950

9.15

2.03

10.10

2.35

11.10

2.72

12.00

3.12

12.90

3.58

13.80

4.08

14.70

4.62

5650

10.40

2.92

11.30

3.27

12.20

3.66

13.00

4.08

13.80

4.54

14.60

5.04

15.40

5.57

6350

11.70

4.02

12.50

4.40

13.30

4.81

14.00

5.25

14.70

5.72

15.50

6.23

16.20

6.77

7050

13.00

5.37

13.70

5.77

14.40

6.21

15.10

6.66

15.70

7.15

16.40

7.67

17.10

8.21

40RM FACTORY-SUPPLIED FILTER
PRESSURE DROP — SI

LEGEND
ESP — External Static Pressure

Bold indicates field-supplied drive required.
Plain type indicates standard motor and standard drive.
Underline indicates a different motor and drive combination is required.
Refer to fan motor and drive tables, pages 41-43, to complete the
selection.
NOTES:
1. Maximum allowable fan speed is 18.3 r/s for unit sizes 028 and 034;
20 r/s for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 51-mm
filters, and unit casing. See right for factory-supplied filter pressure
drop.
3. The standard motor and medium-static drive combination is not available for 40RM016-028 units. Use the alternate motor if the mediumstatic drive is required for these sizes.

UNIT
40RM
016
024
028
034

AIRFLOW
(L/s)
2100
2800
3500
2900
3800
4700
3500
4700
5900
4250
5650
7050

PRESSURE DROP
(Pa)
20
30
42
32
47
64
36
55
76
47
71
98

27

Performance data — 38AH024-034/40RM (cont)
40RM FAN PERFORMANCE DATA — 350-600 Pa ESP — SI
UNIT
40RM

016

024

028

034

AIRFLOW
(L/s)

350

400

EXTERNAL STATIC PRESSURE (Pa)
450
500
550
r/s
kW
r/s
kW
r/s
kW
16.70
2.11
17.40
2.32
18.20
2.53

2100

r/s
15.00

kW
1.70

r/s
15.80

kW
1.90

2450

15.50

2.03

16.30

2.25

17.10

2800

16.00

2.42

16.80

2.66

17.60

2.90

3150

16.60

2.87

17.40

3.12

18.10

3.38

3500

17.20

3.38

18.00

3.65

18.70

3.93

2900

16.00

2.49

16.80

2.73

17.50

3350

16.70

3.08

17.50

3.34

3800

17.50

3.77

18.20

4.06

18.60

2.93

19.30

3.16

18.30

3.14

19.00

3.38

19.70

3.63

18.80

3.64

19.50

3.90

—

—

19.40

4.20

—

—

—

—

2.97

18.30

3.22

19.00

3.47

19.70

18.20

3.61

18.90

3.87

19.60

4.14

—

—

18.90

4.35

19.60

4.64

—

—

—

—

3.72

4250

18.40

4.59

19.10

4.90

19.80

5.21

—

—

—

—

—

—

4700

19.30

5.54

20.00

5.87

—

—

—

—

—

—

—

—

3500

15.10

4.33

16.10

5.12

17.10

5.98

18.00

6.92

—

—

—

—

4100

15.30

4.67

16.20

5.39

17.10

6.18

18.00

7.02

—

—

—

—

4700

15.70

5.23

16.50

5.91

17.40

6.64

18.20

7.43

—

—

—

—

5300

16.20

5.99

17.00

6.65

17.80

7.35

—

—

—

—

—

—

5900

16.90

6.95

17.60

7.59

18.30

8.27

—

—

—

—

—

—

4250

15.00

4.55

16.00

5.24

16.80

5.99

17.70

6.79

—

—

—

—

4950

15.50

5.22

16.30

5.86

17.10

6.56

17.90

7.30

—

—

—

—

5650

16.10

6.16

16.90

6.77

17.60

7.43

18.30

8.13

—

—

—

—

6350

16.90

7.34

17.50

7.94

18.20

8.58

—

—

—

—

—

—

7050

17.70

8.79

18.30

9.39

—

—

—

—

—

—

—

—

40RM FACTORY-SUPPLIED FILTER
PRESSURE DROP — SI

LEGEND
ESP — External Static Pressure

Bold indicates field-supplied drive required.
Plain type indicates standard motor and standard drive.
Underline indicates a different motor and drive combination is required.
Refer to fan motor and drive tables, pages 41-43, to complete the
selection.
NOTES:
1. Maximum allowable fan speed is 18.3 r/s for unit sizes 028 and 034;
20 r/s for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 51-mm
filters, and unit casing. See right for factory-supplied filter pressure
drop.
3. The standard motor and medium-static drive combination is not available for 40RM016-028 units. Use the alternate motor if the mediumstatic drive is required for these sizes.

28

kW
2.74

2.70

2.47

17.80

600
r/s
18.90

UNIT
40RM
016
024
028
034

AIRFLOW
(L/s)
2100
2800
3500
2900
3800
4700
3500
4700
5900
4250
5650
7050

PRESSURE DROP
(Pa)
20
30
42
32
47
64
36
55
76
47
71
98

40RM FAN PERFORMANCE DATA — 0.0-1.2 in. wg ESP — ENGLISH
UNIT
40RM

016

024

028

034

4,500

Rpm
391

Bhp
0.51

Rpm
495

Bhp
0.75

EXTERNAL STATIC PRESSURE (in. wg)
0.4
0.6
0.8
Rpm
Bhp
Rpm
Bhp
Rpm
Bhp
581
1.00
657
1.25
725
1.50

5,300

460

0.80

551

1.08

629

1.35

700

1.63

764

AIRFLOW
(Cfm)

0.0

0.2

1.0

1.2

Rpm
787

Bhp
1.76

Rpm
845

Bhp
2.02

1.91

823

2.20

878

2.48

6,000

521

1.13

602

1.43

675

1.73

741

2.04

801

2.34

858

2.65

911

2.96

6,800

590

1.60

663

1.93

730

2.26

791

2.59

847

2.92

901

3.26

951

3.60

7,500

651

2.10

718

2.45

779

2.81

837

3.16

890

3.52

941

3.88

990

4.24

6,000

503

1.07

587

1.37

661

1.67

727

1.97

789

2.28

846

2.59

900

2.90

7,000

586

1.64

660

1.98

726

2.31

787

2.65

844

2.99

898

3.33

948

3.67

8,000

670

2.37

735

2.74

795

3.12

851

3.49

904

3.86

954

4.23

1001

4.61

9,000

754

3.28

812

3.69

867

4.09

918

4.50

967

4.90

1014

5.31

1059

5.72

10,000

838

4.39

891

4.83

941

5.27

988

5.70

1034

6.14

1077

6.85

1120

7.02

7,500

412

1.15

492

1.53

568

2.00

640

2.56

710

3.22

776

3.98

840

4.83

8,750

481

1.76

550

2.17

616

2.66

680

3.22

742

3.86

802

4.58

860

5.38

10,000

549

2.55

610

2.99

669

3.50

726

4.07

782

4.70

836

5.40

889

6.17

11,250

618

3.52

672

4.00

725

4.53

777

5.12

827

5.76

876

6.45

925

7.21

12,500

687

4.71

735

5.22

783

5.78

830

6.38

876

7.04

922

7.74

966

8.49

9,000

471

1.78

539

2.17

604

2.63

667

3.17

728

3.78

788

4.46

845

5.22

10,500

550

2.72

608

3.15

665

3.64

720

4.18

774

4.79

827

5.45

878

6.18

12,000

628

3.93

679

4.40

730

4.92

779

5.48

827

6.09

874

6.76

921

7.47

13,500

707

5.44

752

5.94

797

6.49

841

7.08

885

7.71

928

8.38

970

9.10

15,000

785

7.27

826

7.81

867

8.39

907

9.01

947

9.66

986

10.35

1024

11.07

40RM FACTORY-SUPPLIED FILTER
PRESSURE DROP — ENGLISH

LEGEND
ESP — External Static Pressure

Bold indicates field-supplied drive required.
Plain type indicates standard motor and standard drive.
Underline indicates a different motor and drive combination is required.
Refer to fan motor and drive tables, pages 41-43, to complete the
selection.
NOTES:
1. Maximum allowable fan speed is 1100 rpm for unit sizes 028 and
034; 1200 rpm for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 2-in.
filters, and unit casing. See right for factory-supplied filter pressure
drop.
3. The standard motor and medium-static drive combination is not available for 40RM016-028 units. Use the alternate motor if the mediumstatic drive is required for these sizes.

UNIT
40RM
016
024
028
034

AIRFLOW
(Cfm)
4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
9,000
12,000
15,000

PRESSURE DROP
(in. wg)
0.08
0.12
0.17
0.12
0.19
0.26
0.15
0.22
0.30
0.19
0.29
0.40

29

Performance data — 38AH024-034/40RM (cont)
FAN PERFORMANCE DATA — 1.4-2.4 in. wg ESP — ENGLISH
UNIT
40RM

016

024

028

034

AIRFLOW
(Cfm)

1.4

1.6

4,500

Rpm
899

Bhp
2.29

Rpm
951

5,300

930

2.78

980

6,000

961

3.28

6,800

999

3.94

7,500

1036

6,000

EXTERNAL STATIC PRESSURE (in. wg)
1.8
2.0
Bhp
Rpm
Bhp
Rpm
Bhp
2.56
999
2.84
1046
3.12

2.4
Bhp
3.41

Rpm
1133

Bhp
3.70

3.08

1027

3.38

1072

3.68

1116

3.99

1157

4.30

1009

3.60

1055

3.92

1098

4.24

1141

4.57

1181

4.91

1045

4.28

1089

4.63

1132

4.98

1173

5.33

—

—

4.60

1080

4.97

1123

5.34

1164

5.71

—

—

—

—

950

3.21

999

3.53

1045

3.85

1089

4.17

1131

4.50

1172

4.83

7,000

996

4.02

1042

4.37

1086

4.72

1129

5.07

1169

5.43

—

—

8,000

1047

4.99

1091

5.37

1133

5.75

1173

6.13

—

—

—

—

9,000

1102

6.13

1143

6.54

1183

6.96

—

—

—

—

—

—

10,000

1160

7.46

1200

7.91

—

—

—

—

—

—

—

—

7,500

903

5.79

963

6.83

1021

7.98

1078

9.21

—

—

—

—

8,750

917

6.26

972

7.22

1025

8.26

1078

9.38

—

—

—

—

10,000

941

7.01

991

7.91

1040

8.89

1089

9.93

—

—

—

—

11,250

972

8.02

1019

8.89

1064

9.83

—

—

—

—

—

—

12,500

1010

9.29

1053

10.15

1095

11.05

—

—

—

—

—

—

9,000

901

6.07

955

6.98

1008

7.98

1060

9.05

—

—

—

—

10,500

928

6.98

978

7.84

1026

8.76

1073

9.74

—

—

—

—

12,000

966

8.24

1011

9.07

1055

9.95

1098

10.88

—

—

—

—

13,500

1011

9.86

1052

10.67

1092

11.52

—

—

—

—

—

—

15,000

1062

11.84

—

—

—

—

—

—

—

—

—

—

LEGEND
ESP — External Static Pressure

40RM FACTORY-SUPPLIED FILTER
PRESSURE DROP — ENGLISH

Bold indicates field-supplied drive required.
Plain type indicates standard motor and standard drive.
Underline indicates a different motor and drive combination is required.

UNIT
40RM

Refer to fan motor and drive tables, pages 41-43, to complete the
selection.

016

NOTES:
1. Maximum allowable fan speed is 1100 rpm for unit sizes 028 and
034; 1200 rpm for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 2-in.
filters, and unit casing. See right for factory-supplied filter pressure
drop.
3. The standard motor and medium-static drive combination is not available for 40RM016-028 units. Use the alternate motor if the mediumstatic drive is required for these sizes.

30

2.2
Rpm
1091

024
028
034

AIRFLOW
(Cfm)
4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
9,000
12,000
15,000

PRESSURE DROP
(in. wg)
0.08
0.12
0.17
0.12
0.19
0.26
0.15
0.22
0.30
0.19
0.29
0.40

40RM PLENUM ACCESSORY AIR THROW DATA — SI
(m)
UNIT
40RM

AIRFLOW
(L/s)

016
024
028
034

2800
3800
4700
5650

VANE DEFLECTION
Straight
221⁄2°
45°
15.41
13.25
9.55
18.17
15.44
11.20
23.26
19.89
14.38
25.97
22.00
15.89

NOTE: Throw distances shown are for 0.381 m/sec terminal velocity.
Use the following multipliers to determine throw values for other terminal velocities.
TERMINAL VELOCITY
(m/sec)
0.254
0.508
0.762

UNIT
40RM

AIRFLOW
(Cfm)

016
024
028
034

6,000
8,000
10,000
12,000

VANE DEFLECTION
Straight
221⁄2°
45°
50
43
31
60
51
37
76
65
47
85
72
52

NOTE: Throw distances shown are for 75 fpm terminal velocity. Use
the following multipliers to determine throw values for other terminal
velocities.
TERMINAL VELOCITY
(Fpm)
50
100
150

THROW FACTOR
X
X
X

40RM PLENUM ACCESSORY AIR THROW DATA —
ENGLISH (Ft)

1.50
0.75
0.50

THROW FACTOR
X
X
X

1.50
0.75
0.50

40RM ACCESSORY PRESSURE DROP — SI
(Pa)
UNIT
40RM
016
024
028
034

AIRFLOW
(L/s)

DISCHARGE
PLENUM

RETURN AIR
GRILLE

2100
2800
3500
2900
3800
4700
3500
4700
5900
4250
5650
7050

24
39
56
41
64
91
37
59
86
50
80
114

2
5
7
5
10
15
5
7
12
7
12
17

Hot Water
36
57
82
60
93
132
67
109
157
92
147
210

HEATING COILS
Steam
36
57
82
60
93
132
67
109
157
92
147
210

Electric
14
24
37
26
43
65
22
39
60
32
56
85

ECONOMIZER
15
22
37
23
43
69
15
22
35
20
35
52

40RM ACCESSORY PRESSURE DROP — ENGLISH
(in. wg)
UNIT
40RM
016
024
028
034

AIRFLOW
(Cfm)

DISCHARGE
PLENUM

RETURN AIR
GRILLE

4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
9,000
12,000
15,000

0.10
0.16
0.23
0.16
0.26
0.37
0.15
0.24
0.34
0.20
0.32
0.46

0.01
0.02
0.03
0.02
0.04
0.06
0.02
0.03
0.05
0.03
0.05
0.07

Hot Water
0.15
0.23
0.33
0.23
0.37
0.53
0.28
0.44
0.63
0.37
0.59
0.85

HEATING COILS
Steam
0.15
0.23
0.33
0.23
0.37
0.53
0.28
0.44
0.63
0.37
0.59
0.85

Electric
0.06
0.10
0.15
0.10
0.17
0.26
0.09
0.16
0.24
0.13
0.22
0.34

ECONOMIZER
0.06
0.09
0.15
0.09
0.17
0.28
0.06
0.09
0.14
0.08
0.14
0.21

31

Typical piping and wiring — 38AH024-034
ROOFTOP INSTALLATION

LEGEND
TXV — Thermostatic Expansion Valve
Piping
Double Riser Piping (If Required)
*Field supplied.
†If double suction riser is required for piping system, size pipe diameter of 3 ft (maximum) riser
according to application data on page 40.

32

NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to
Carrier System Design Manual for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are
not intended for, or to include all details for, a specific installation.
4. Liquid line solenoid valve (solenoid drop control) is recommended to prevent
refrigerant migration to the compressor.
5. Internal factory-supplied TXVs not shown.

GROUND LEVEL INSTALLATION

LEGEND
TXV — Thermostatic Expansion Valve
Piping
*Field supplied.

NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to
Carrier System Design Manual for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are
not intended for, or to include all details for, a specific installation.
4. Liquid line solenoid valve (solenoid drop control) is recommended to prevent
refrigerant migration to the compressor.

33

Electrical data — 38AH024-034/40RM
38AH024-034
UNIT
38AH

VOLTAGE
DESIGNATION

NAMEPLATE
VOLTAGE
(3 Ph, 50 Hz)

803
903
303
803
903
303
803
903
303

230
400
346
230
400
346
230
400
346

024
028
034

SUPPLY
VOLTAGE*

POWER SUPPLY

COMPRESSOR

Min

Max

MCA

MOCP

ICF

198
342
311
198
342
311
198
342
311

254
400
380
254
400
380
254
400
380

101.2
46.5
62.8
110.9
55.7
68.2
135.9
65.1
78.1

125
60
80
150
70
90
175
90
110

268.8
204.0
194.8
298.8
234.0
216.8
355.8
240.0
257.8

RLA
Ckt 1 Ckt 2
39.3
39.3
18.0
18.0
24.0
24.0
43.6
43.6
22.1
22.1
26.4
26.4
43.6
63.6
22.1
30.0
26.4
34.3

LRA
Ckt 1 Ckt 2
128
128
99
99
93
93
143
143
114
114
104
104
143
200
114
120
104
145

FAN MOTORS†
QTY
2
2
2
2
2
2
2
2
2

FLA
(ea)
6.4
3.0
4.4
6.4
3.0
4.4
6.4
3.0
4.4

Nominal
Hp

Nominal
kW

1

0.75

1

0.75

1

0.75

*Units are suitable for use on electrical systems where voltage supplied
to unit terminals is not below or above listed minimum and maximum.
†All fans are protected by a single circuit breaker.

LEGEND
— Full Load Amps
— Maximum Instantaneous Current Flow During Starting. (The
point in the starting sequence where the sum of the LRA
for the starting compressor, plus the total RLA for all running compressors, plus the total FLA for all running fan
motors is maximum.)
LRA
— Locked Rotor Amps
MCA — Minimum Circuit Amps (complies with National Electrical
Code [NEC] Section 430-24) (U.S.A. Standard)
MOCP — Maximum Overcurrent Protection
RLA
— Rated Load Amps
FLA
ICF

40RM STANDARD MOTORS
FAN MOTOR
UNIT
40RM
016
024
028
034

V*-PH-HZ

VOLTAGE
LIMITS

230-3-50
400-3-50
230-3-50
400-3-60
230-3-50
400-3-50
230-3-50
400-3-50

207-253
360-440
207-253
360-440
207-253
360-440
207-253
360-440

LEGEND
FLA
— Full Load Amps
MOCP — Maximum Overcurrent Protection
*Motors are designed for satisfactory operation within 10% of nominal
voltages shown. Voltages should not exceed the limits shown in the
Voltage Limits column.
NOTES:
1. Minimum circuit amp and MOCP values are calculated in accordance
with NEC (National Electrical Code) (U.S.A. standard), Article 440.
2. Motor FLA values are established in accordance with UL (Underwriters’ Laboratories) Standard 1995 (U.S.A. standard).
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percentage of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
EXAMPLE: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
393 + 403 + 396
Average Voltage =
3
1192
=
3
= 397

34

kW (Hp)
2.16
2.16
3.73
3.73
5.59
5.59
7.46
7.46

POWER SUPPLY
Minimum
Circuit
MOCP
Amps
9.4
15
4.3
15
19.0
30
9.5
15
28.5
50
14.3
25
40.3
70
20.1
30

FLA

(2.9)
(2.9)
(5.0)
(5.0)
(7.5)
(7.5)
(10.0)
(10.0)

7.5
3.4
15.2
7.6
22.8
11.4
32.2
16.1

Determine maximum deviation from average voltage.
(AB) 397 − 393 = 4 v
(BC) 403 − 397 = 6 v
(AC) 397 − 396 = 1 v
Maximum deviation is 6 v.
Determine percent voltage imbalance.
6
% Voltage Imbalance = 100 x
397
= 1.5%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.

40RM ALTERNATE MOTORS
FAN MOTOR
UNIT
40RM
016
024
028

V*-PH-HZ

VOLTAGE
LIMITS

230-3-50
400-3-50
230-3-50
400-3-50
230-3-50
400-3-50

207-253
360-440
207-253
360-440
207-253
360-440

LEGEND
FLA
— Full Load Amps
MOCP — Maximum Overcurrent Protection
*Motors are designed for satisfactory operation within 10% of nominal
voltages shown. Voltages should not exceed the limits shown in the
Voltage Limits column.
NOTES:
1. Minimum circuit amp and MOCP values are calculated in accordance
with NEC (National Electrical Code) (U.S.A. standard), Article 440.
2. Motor FLA values are established in accordance with UL (Underwriters’ Laboratories) Standard 1995 (U.S.A. standard).
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percentage of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
EXAMPLE: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
393 + 403 + 396
Average Voltage =
3
1192
=
3
= 397

kW (Hp)
3.73
3.73
5.59
5.59
7.46
7.46

FLA

(5.0)
(5.0)
(7.5)
(7.5)
(10.0)
(10.0)

15.2
7.6
22.8
11.4
32.2
16.1

POWER SUPPLY
Minimum
Circuit
MOCP
Amps
19.0
30
9.5
15
28.5
50
14.3
25
40.3
60
20.1
30

Determine maximum deviation from average voltage.
(AB) 397 − 393 = 4 v
(BC) 403 − 397 = 6 v
(AC) 397 − 396 = 1 v
Maximum deviation is 6 v.
Determine percent voltage imbalance.
6
% Voltage Imbalance = 100 x
397
= 1.5%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.

40RM FAN CONTACTOR COIL
UNIT
40RM
016-034

VOLTAGE
(vac)
24

MAXIMUM
HOLDING
VA
10

35

Electrical data — 38AH024-034/40RM (cont)
40RM ELECTRIC HEATER ACCESSORY DATA
UNIT
40RM

HEATER
PART NO.

V-PH-Hz

CAELHEAT016A00

240-3-50

CAELHEAT017A00

400-3-50

CAELHEAT019A00

240-3-50

CAELHEAT020A00

400-3-50

CAELHEAT022A00

240-3-50

CAELHEAT023A00

400-3-50

CAELHEAT025A00

240-3-50

CAELHEAT026A00

400-3-50

CAELHEAT028A00

240-3-50

CAELHEAT029A00

400-3-50

CAELHEAT031A00

240-3-50

CAELHEAT032A00

400-3-50

CAELHEAT034A00

240-3-50

CAELHEAT035A00

400-3-50

CAELHEAT037A00

240-3-50

CAELHEAT038A00

400-3-50

016,024

028,034

ELECTRIC HEATERS(S)

FAN MOTOR
Hp

kW

FLA

2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
2.9
5.0
7.5
7.5
10.0
7.5
10.0
7.5
10.0
7.5
10.0
7.5
10.0
7.5
10.0
7.5
10.0
7.5
10.0

2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
2.16
3.73
5.59
5.59
7.46
5.59
7.46
5.59
7.46
5.59
7.46
5.59
7.46
5.59
7.46
5.59
7.46
5.59
7.46

7.5
15.2
22.8
3.4
7.6
11.4
7.5
15.2
22.8
3.4
7.6
11.4
7.5
15.2
22.8
3.4
7.6
11.4
7.5
15.2
22.8
3.4
7.6
11.4
22.8
32.2
11.4
16.1
22.8
32.2
11.4
16.1
22.8
32.2
11.4
16.1
22.8
32.2
11.4
16.1

Nominal
Capacity
(kW)
10
10
10
10
10
10
20
20
20
20
20
20
30
30
30
30
30
30
50
50
50
50
50
50
20
20
20
20
40
40
40
40
50
50
50
50
70
70
70
70

LEGEND
FLA
— Full Load Amps
Hp
— Horsepower
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection (Amps)
*Values shown are for single-point connection of electric heat accessory and air handler.
†Single-phase motors. All other motors are 3-phase.

HEATER
RATING
VOLTAGE
240
480
575

36

Actual Capacity (kW)
Stage 1

Stage 2

Total

10.0
10.0
10.0
6.9
6.9
6.9
20.0
20.0
20.0
13.9
13.9
13.9
20.0
20.0
20.0
13.9
13.9
13.9
30.0
30.0
30.0
20.8
20.8
20.8
20.0
20.0
13.9
13.9
20.0
20.0
13.9
13.9
30.0
30.0
20.8
20.8
40.0
40.0
27.8
27.8

—
—
—
—
—
—
—
—
—
—
—
—
10.0
10.0
10.0
6.9
7.9
7.9
20.0
20.0
20.0
13.9
13.9
13.9
—
—
—
—
20.0
20.0
13.9
13.9
20.0
20.0
13.9
13.9
30.0
30.0
20.8
20.8

10.0
10.0
10.0
6.9
6.9
6.9
20.0
20.0
20.0
13.9
13.9
13.9
30.0
30.0
30.0
20.8
20.8
20.8
50.0
50.0
50.0
34.7
34.7
34.7
20.0
20.0
13.9
13.9
40.0
40.0
27.8
27.8
50.0
50.0
34.7
34.7
70.0
70.0
48.6
48.6

208

230

0.694
—
—

0.751
—
—

0.918
—
—

240
1
—
—

24.1
24.1
24.1
10.0
10.0
10.0
48.1
48.1
48.1
20.0
20.0
20.0
72.2
72.2
72.2
30.1
30.1
30.1
120.3
120.3
120.3
50.1
50.1
50.1
48.1
48.1
20.0
20.0
96.2
96.2
40.1
40.1
120.3
120.3
50.1
50.1
168.4
168.4
70.2
70.2

MCA*

MOCP*

39.4
49.1
58.6
16.8
22.0
26.8
69.5
79.1
86.4
29.3
45.1
49.2
99.6
109.2
118.7
41.8
47.1
51.8
159.7
169.4
178.9
66.9
72.1
76.9
88.6
100.4
39.3
45.2
148.8
160.5
64.4
70.2
178.9
190.6
76.9
82.8
196.9
208.6
84.4
90.3

40
50
70
20
25
35
70
80
90
30
50
50
100
110
125
50
50
60
175
175
200
70
80
80
90
110
40
50
150
175
70
80
200
200
80
90
200
225
90
100

NOTES:
1. Electrical resistance heaters are rated at 240 v, or 480 v. To determine heater capacity (kW) at unit nameplate multiply the 240-v, or
480-v, capacity (kW) by the factor shown in the table below for the
unit voltage.
2. The following equation converts kW of heat energy to Btuh:
kW x 3,412 = Btuh.
3. Heater contactor coils are 24 v and require 8 va holding current.
4. Electric heaters are tested and ETL approved at maximum total
external static pressure of 1.9 in. wg.
5. MCA and MOCP values apply to both standard and alternate factorysupplied motors.

ACTUAL HEATER VOLTAGE
200

FLA

400

440

460

480

—
0.694
—

—
0.84
—

—
0.918
—

—
1

Controls — 38AH024-034
Operating sequence
Within 6 seconds to 5 minutes (depending on timing logic)
from a thermostat call for the first stage of cooling, compressor no. 1 and the condenser fans start. The no. 2 fan
only starts if the outdoor ambient temperature is above
21.1 C (70 F). The oil pressure switch and the low pressure
switch are bypassed for the first 2 minutes. If either the low
pressure switch or oil pressure switch remain open after
2 minutes, the unit shuts down and goes into a lockout mode.
The evaporator-fan motor starts immediately whenever there
is a call for cooling. If a liquid line solenoid valve has been
installed (for refrigerant control during the off cycle), then
the solenoid valve for compressor no. 1 opens immediately
upon a call for cooling.
On standard units, compressor no. 1 operates either fully
loaded or at one step of unloading, depending on the suction pressure, which is dependent on the evaporator load
conditions.
As the cooling demand increases, the thermostat calls for
the second stage of cooling. Within 6 seconds to 5 minutes
(depending on timing logic) from a call for the second stage
of cooling, compressor no. 2 starts. The oil switch and low
pressure switch for circuit no. 2 are bypassed for the first
two minutes.

As the cooling load is satisfied, the thermostat stops the call
for the second stage of cooling, which in turn deenergizes
compressor no. 2, closes the no. 2 liquid line solenoid (if
installed) and energizes the compressor no. 2 crankcase
heater.
If the space temperature continues to decrease, then the
thermostat stops the call for the first stage of cooling, which
then deenergizes compressor no. 1 and the condenser fans,
closes the no. 1 liquid line solenoid valve (if installed), and
energizes the compressor no. 1 crankcase heater.
The unit controls prevent both compressors from reenergizing within 5 minutes from a previous call for operation.
If the unit safeties trip during operation, then the compressor remains locked out from further operation. To reset the
lockout mode, the thermostat must be forced to stop calling for cooling by resetting the thermostat setting above the
space temperature and then back to the desired set point.
NOTE: If the thermostat fan switch is in the auto position,
the evaporator fan cycles on and off as the thermostat calls
for cooling (or heating). If the switch is in the continuous
position, the fan runs when the condensing unit is powered.

37

38
230-3-50
346-3-50
400-3-50

230-1-50

**For a single air handler, LLS valve 1 is to be used on the lower (no. 1)
evaporator circuit. The LLS valve 2 is to be used on the upper (no. 2) evaporator circuit.
††Only one indoor-fan contactor is required on single air-handler applications.
Use Carrier accessory part no. 40RR900181 for indoor-fan contactor.

UNIT
(V-Ph-Hz)

CONTROL CIRCUIT
PROTECTED AT:
(V-Ph-Hz)

*Use thermostat wiring shown here for single air-handler applications.
†CB3 protects control circuit at the following unit voltages:

NOTES:
1. CB4 protects TB3 circuit; CB5 protects TB2 circuits.
2. LLS1 and LLS2 are field supplied.
3. TB2 and TB3 are in 24-v circuits.
4. On the 33CSUCE-06 Relay Pack, the outside-air sensor, supply-air sensor, and direct expansion coil sensor are available as options.

38AH024-034 UNITS WITH SINGLE AIR HANDLER

CB
COM
IFC
LLS
NEC
RV
TB

LEGEND
— Circuit Breaker
— Common
— Indoor-Fan Contactor
— Liquid Line Solenoid
— National Electrical Code
— Reversing Valve
— Terminal Block
Field Control Wiring
Factory Wiring
Field Power Wiring
Indicates Common
Potential; Does Not
Indicate Wiring

Typical control wiring schematic —
38AH024-034

Application data — 38AH024-034
Indoor equipment should be selected at no less than
40 L/s per kW (300 cfm/ton).

Installation
Select equipment to match or to be slightly less than peak
load. This provides better humidity control, less unit cycling,
and less part-load operation.
When selecting vapor line sizes, oil return must be evaluated, particularly at part-load conditions.
The indoor fan must always be operating when outdoor
unit is operating.

IMPORTANT: Condensing units applied in VVT or
VAV systems must have field-supplied and installed
accumulators. Order 2 part number --KH--73LZ-001
from Service Parts (1 required for each refrigerant
circuit).

IMPORTANT: When application is in a VAV (variable
air volume) system, total building load is not the sum
of the individual peak loads. If individual peak loads
are summed, the equipment tends to be oversized for
the load.

OPERATING LIMITS
Maximum Outdoor Ambient
Minimum Outdoor Ambient
Minimum Return-Air Temperature
Maximum Return-Air Temperature
Normal Acceptable Saturation
Suction Temperature Range
Maximum Discharge Temperature
Minimum Discharge Superheat

To minimize return-air temperature extremes, use the
equipment room as a return-air plenum when applying VVTt
(variable volume temperature) systems with supply-to-return
air recycle as used with Carrier VVT control systems.
Ductwork should be sized according to unit size, not
building load.
To minimize the possibility of air recirculation, avoid the
use of concentric supply/return grilles.

52C (125 F)
See Minimum OutdoorAir Operating Temperature
table below.
12.8 C (55 F)
35 C (95 F)
−6.6 to 10.0 C (20 to 50 F)
135.0 C (275 F)
15.6 C (60 F)

UNLOADING SEQUENCES
CAPACITY/STAGE (%)
CV Units (Standard)*
VAV Units (Optional)
100, 83, 50, 33
100, 83, 67, 50, 33, 17
100, 83, 50, 33
100, 83, 67, 50, 33, 17
100, 85, 43, 28
100, 85, 77, 43, 28, 14

UNIT
38AH
024
028
034

LEGEND
CV — Constant Volume
VAV — Variable Air Volume
*Additional unloading available with field-installed accessory unloader.
NOTE: Capacities are based on 7.2 C (45 F) saturated suction temperature and 35 C (95 F) outdoor
air temperature.

MINIMUM OUTDOOR-AIR OPERATING
TEMPERATURE AND UNLOADING SEQUENCES
UNIT
38AH

024

028

034

SYSTEM
CAPACITY (%)
100
83
67†
50
33
17†
100
83
67†
50
33
17†
100
81
62†
43
29
14†

MINIMUM OUTDOOR-AIR TEMP
Standard Unit
Low Ambient Control
C
F
C
F
−29
−20
−29
−20
*
*
11.7
53
−29
−20
−29
−20
*
*
−29
−20
−29
−20
*
*
10.0
50
−29
−20
−29
−20
*
*
−29
−20
−29
−20
*
*
9.4
49
−29
−20
−29
*

−20
*

*MotormasterT III cannot be used with 2 unloaders.
†VAV or accessory unloader on Circuit 1.
NOTE: Minimum outdoor-air operating temperature is based on 32 C (90 F) saturated condensing
temperature and 100% capacity.

39

Application data — 38AH024-034 (cont)
REFRIGERANT PIPE SIZES
SINGLE SUCTION RISERS
UNIT
38AH

0-25 (0-7.6)
L
S
1⁄2
11⁄8
1⁄2
11⁄8
1⁄2
11⁄8
1⁄2
11⁄8
1⁄2
11⁄8
5⁄8
13⁄8

024 Ckt 1
Ckt 2
028 Ckt 1
Ckt 2
034 Ckt 1
Ckt 2

LENGTH OF INTERCONNECTING PIPING, FOR EACH CIRCUIT — FT (M)
25-50 (7.6-15.2)
50-75 (15.2-22.9)
75-100 (22.9-30.5)
L
S
L
S
L
S
5⁄8
5⁄8
5 ⁄8
11⁄8
13⁄8
13⁄8
5⁄8
5⁄8
5 ⁄8
11⁄8
13⁄8
13⁄8
5⁄8
5⁄8
5 ⁄8
13⁄8
13⁄8
13⁄8
5⁄8
5⁄8
5 ⁄8
13⁄8
13⁄8
13⁄8
5⁄8
5⁄8
5 ⁄8
13⁄8
13⁄8
13⁄8
5⁄8
5⁄8
7 ⁄8
15⁄8
15⁄8
15⁄8

LEGEND
L — Liquid Line
S — Suction Line
*Double suction riser required if evaporator is below condensing unit
and 2 unloaders are used on that circuit.
†Double suction riser required if evaporator is below condensing unit
and compressor is equipped with 2 unloaders. Note the only time
circuit no. 2 may be equipped with 2 unloaders is if it is serving its
own air handler and the unit does not require low ambient operation
(MotormasterT III control).

100-200 (30.5-61.0)
L
S
7 ⁄8
15⁄8*†
7 ⁄8
15⁄8*†
7 ⁄8
15⁄8*†
7 ⁄8
15⁄8*†
7 ⁄8
15⁄8*†
7 ⁄8
21⁄8*†

NOTES:
1. All line sizes are inches OD.
2. Standard unit comes with one pressure-operated unloader on circuit
no. 1. If unit serves one air handler, an additional unloader may be
field installed on circuit no. 1 compressor only. If the unit serves
2 separate air handlers and low ambient operation is required (Motormaster III control), each circuit’s compressor may only be equipped
with one unloader.
3. Equivalent line sizes in mm follow:
in.
1⁄2
5⁄8
7⁄8
11⁄8

mm
12.7
15.9
22.2
28.6

in.
13⁄8
15⁄8
21⁄8

mm
34.9
41.3
54.0

DOUBLE SUCTION RISERS
UNIT
38AH
024 Ckt
Ckt
028 Ckt
Ckt
034 Ckt
Ckt

1
2
1
2
1
2

LENGTH OF INTERCONNECTING PIPING — Ft (M)
100-200 (30.5-61.0)
A
B
C
11⁄8
13⁄8
15⁄8
13⁄8
13⁄8
15⁄8
1
3
1 ⁄8
1 ⁄8
15⁄8
11⁄8
13⁄8
15⁄8
11⁄8
13⁄8
15⁄8
13⁄8
15⁄8
21⁄8

MAXIMUM LIQUID LIFT
UNIT
38AH
024
028
034

MAXIMUM LIQUID LIFT
PER CIRCUIT — M (Ft)
23.2 (76)
22.3 (73)
30.5 (100)

LEGEND
— Suction Riser without Trap
— Suction Riser with Trap
— Suction Line to Condensing Unit
— Pipe Diameter to be Same Size as Riser A

40

Application data — 40RM
Operating limits
Maximum fan speed —
40RM016,024 . . . . . . . . . . . . . . . . . . 20 r/s (1200 rpm)
Maximum fan speed —
40RM028,034 . . . . . . . . . . . . . . . . 18.3 r/s (1100 rpm)

General
Select equipment to match or to be slightly less than peak
load. This provides better humidity control, less unit cycling,
and less part-load operation. Equipment should be selected
to perform at no less than 40 L/s per kW (300 cfm/ton).

The air handler fan must always be operating when the
condensing unit is operating.
Ductwork should be sized according to unit size, not
building load. For larger units with two fans, a split duct
transition is recommended at the fan outlets, but a plenum
can be used with slight reduction in external static pressure
capability.
For variable air volume (VAV) systems with supply-toreturn air recycling, use the equipment room as a return air
plenum.

FACTORY-INSTALLED NOZZLE AND DISTRIBUTOR DATA
UNIT
40RM
016
024
028
034

TXV
Qty...Part No.
2...XVE-8
2...XVE-10
2...EBSVE-11
2...SVE-15

DISTRIBUTOR
Qty...Part No.
2...1116
2...1116
2...1126
2...1126

FEEDER TUBES
PER DISTRIBUTOR*
12
13
15
18

NOZZLE
Qty...Part No.
2...E6
2...E8
2...C10
2...C12

*Feeder tube size is 6.35 mm (1⁄4 in.).
NOTE: Hot gas bypass applications require field-supplied auxiliary side connector.

40RM FAN MOTOR DATA
STANDARD MOTOR — ENGLISH

STANDARD MOTOR — SI
UNIT
016
40RM
230-3-50 and 400-3-50
Speed (r/s)
23.75
Shaft kW
2.16
Frame (NEMA)
56Y
Shaft Dia (mm)
22.2

024

028

034

23.75
3.73
184T
28.6

23.75
5.59
S213T
34.9

23.75
7.46
S215T
34.9

NEMA — National Electrical Manufacturers Association (U.S.A.)

ALTERNATE MOTOR — SI
UNIT
40RM
230-3-50 and 400-3-50
Speed (r/s)
Shaft kW
Frame (NEMA)
Shaft Dia (mm)

UNIT
016
40RM
230-3-50 and 400-3-50
Speed (rpm)
1425
Hp
2.9
Frame (NEMA)
56Y
7⁄8
Shaft Dia (in.)

024

028

034

1425
5.0
184T
11⁄8

1425
7.5
S213T
13⁄8

1425
10.0
S215T
13⁄8

NEMA — National Electrical Manufacturers Association (U.S.A.)

ALTERNATE MOTOR — ENGLISH

016

024

028

23.75
3.73
S184T
28.6

23.75
5.59
S213T
34.9

23.75
7.46
S215T
34.9

NEMA — National Electrical Manufacturers Association (U.S.A.)

UNIT
40RM
230-3-50 and 400-3-50
Speed (rpm)
Hp
Frame (NEMA)
Shaft Dia (in.)

016

024

028

1425
5.0
S184T
11⁄8

1425
7.5
S213T
13⁄8

1425
10.0
S215T
13⁄8

NEMA — National Electrical Manufacturers Association (U.S.A.)

41

Application data — 40RM (cont)
40RM DRIVE DATA
STANDARD DRIVE — SI
UNIT
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)
Pulley Bore (mm)
Belt No. — Section
Belt Pitch (mm)
FAN SPEEDS (r/s)
Factory Setting
Range
Max Allowable Speed (r/s)
Change per 1⁄2 Turn of
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(mm)

HIGH-STATIC DRIVE — SI

016

024

028

034

86.4111.8

109.2134.6

109.2134.6

109.2134.6

2.5

3.0

3.0

3.0

229
36.5
1—A
1074

218
36.5
1—B
1062

279
49.2
2—B
1113

279
49.2
2—B
1113

10.3
9.011.6
20.0

13.3
11.914.6
20.0

10.4
9.311.5
18.3

10.4
9.311.5
18.3

0.265

0.230

0.180

0.180

5

6

6

6

265313

232279

169240

169240

MEDIUM-STATIC DRIVE — SI
UNIT
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)
Pulley Bore (mm)
Belt No. — Section
Belt Pitch (mm)
FAN SPEEDS (r/s)
Factory Setting
Range
Max Allowable Speed (r/s)
Change per 1⁄2 Turn of
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(mm)

42

UNIT
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)
Pulley Bore (mm)
Belt No. — Section
Belt Pitch (mm)
FAN SPEEDS (r/s)
Factory Setting
Range
Max Allowable Speed (r/s)
Change per 1⁄2 Turn of
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(mm)

016

024

028

034

101.6127.0

101.6127.0

109.2134.6

109.2134.6

3.0

3.0

3.0

3.0

178
36.5
2—A
998

163
36.5
2—A
871

203
49.2
2—B
935

218
49.2
2—B
960

15.3
13.617.0
20.0

16.7
14.918.6
20.0

14.3
12.815.7
18.3

13.3
11.914.6
18.3

0.283

0.308

0.247

0.230

6

6

6

6

232279

207255

169240

169240

STANDARD DRIVE — ENGLISH

016

024

028

034

94.0119.4

101.6127.0

109.2134.6

109.2134.6

3.0

2.5

3.0

3.0

201
36.5
1—B
1011

178
36.5
2—A
922

239
49.2
2—B
1011

239
49.2
2—B
1011

12.6
11.114.1
20.0

15.3
13.617.0
20.0

12.1
10.913.4
18.3

12.1
10.913.4
18.3

0.252

0.340

0.210

0.210

6

5

6

6

232279

232279

169240

169240

UNIT
016
024
028
034
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter 3.4-4.4 4.3-5.3 4.3-5.3 4.3-5.3
(in.)
Pulley Factory Setting
2.5
3.0
3.0
3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)
9.0
8.6
11.0
11.0
Pulley Bore (in.)
17⁄16
17⁄16
115⁄16
115⁄16
Belt No. — Section
1—A
1—B
2—B
2—B
Belt Pitch (in.)
42.3
41.8
43.8
43.8
FAN SPEEDS (rpm)
Factory Setting
618
795
622
622
538713557557Range
697
878
687
687
Max Allowable Speed (rpm)
1200
1200
1100
1100
Change per 1⁄2 Turn of
Moveable Motor Pulley
15.9
13.8
10.8
10.8
Flange
MAX FULL TURNS FROM
5
6
6
6
CLOSED POSITION
SHAFTS CENTER DISTANCE
10.449.12- 6.676.67(in.)
12.32
10.99
9.43
9.43

40RM DRIVE DATA (cont)
MEDIUM-STATIC DRIVE — ENGLISH

HIGH-STATIC DRIVE —ENGLISH

UNIT
016
024
028
034
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter 3.7-4.7 4.0-5.0 4.3-5.3 4.3-5.3
(in.)
Pulley Factory Setting
3.0
2.5
3.0
3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)
7.9
7.0
9.4
9.4
Pulley Bore (in.)
17⁄16
17⁄16
115⁄16
115⁄16
Belt No. — Section
1—B
2—A
2—B
2—B
Belt Pitch (in.)
39.8
36.8
39.8
39.8
FAN SPEEDS (rpm)
Factory Setting
756
916
728
728
667814652652Range
848
1018
803
803
Max Allowable Speed (rpm)
1200
1200
1100
1100
Change per 1⁄2 Turn of
Moveable Motor Pulley
15.1
20.4
12.6
12.6
Flange
MAX FULL TURNS FROM
6
5
6
6
CLOSED POSITION
SHAFTS CENTER DISTANCE
9.169.16- 6.676.67(in.)
10.99
10.99
9.43
9.43

UNIT
016
024
028
034
40RM
MOTOR DRIVE
Motor Pulley Pitch Diameter 4.0-5.0 4.0-5.0 4.3-5.3 4.3-5.3
(in.)
Pulley Factory Setting
3.0
3.0
3.0
3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)
7.0
6.4
8.0
8.6
Pulley Bore (in.)
17⁄16
17⁄16
115⁄16
115⁄16
Belt No. — Section
2—A
2—A
2—B
2—B
Belt Pitch (in.)
39.3
34.3
36.8
37.8
FAN SPEEDS (rpm)
Factory Setting
916
1002
855
795
814891766713Range
1018
1113
944
878
Max Allowable Speed (rpm)
1200
1200
1100
1100
Change per 1⁄2 Turn of
Moveable Motor Pulley
17.0
18.5
14.8
13.8
Flange
MAX FULL TURNS FROM
6
6
6
6
CLOSED POSITION
SHAFTS CENTER DISTANCE
9.168.16- 6.676.67(in.)
10.99
10.02
9.43
9.43

43

Model number nomenclature — 38AH044-134
38AH

—

094

——

—

9

0

3

AA

38AH — Split System
Condensing Unit

Factory-Installed Options
044-084:
– – — Standard Unit
AA — Class F Fan Motors
BA — VAV Control Box Modification
and Electric Unloaders
CA — VAV Modifications and
Class F Fan Motors
DA — Single-Circuit Piping
EA — Single-Circuit Piping with
Class F Fan Motors
FA — Single-Circuit Piping and VAV
Modifications
GA — Single-Circuit Piping, VAV
Modifications, and Class F
Fan Motors
094,104:
– – — Standard Unit
AA — Class F Fan Motors
BA — VAV (Variable Air Volume) Modifications
CA — Class F Fan Motors with VAV
Modifications
124,134:
DA — Standard Unit
EA — Class F Fan Motors
FA — VAV Modifications
GA — Class F Fan Motors with VAV
Modifications

Start Options
– — Across-the-Line Start
P — Part-Wind Start
Nominal Capacity
044 — 123 kW (35 Tons)
054 — 144 kW (41 Tons)
064 — 175 kW (50 Tons)
074 — 214 kW (61 Tons)
084 — 242 kW (69 Tons)
094 — 274 kW (78 Tons)
104 — 305 kW (87 Tons)
124 — 351 kW (100 Tons)
134 — 390 kW (111 Tons)
Not Used
Condenser Fin Material
–
— Aluminum (Standard)
C
— Copper (Optional)
K
— Pre-Coated Aluminum (Optional)
SO — Post-Coated Aluminum (Contact Factory)
SO — Post-Coated Copper (Contact Factory)
Voltage Designation
3 — 346-3-50 (Part Wind)
8 — 230-3-50 (Part-Wind, 044 Size)
9 — 380/415-3-50

Packaging
2 — Coil Protection Only (For Closed Container
Shipments)
3 — Standard Export (Top and Bottom Skid,
Coil Protector and Full Plastic Bag
Enclosure)
4 — Optional Export (Full Export Box)

Revision Number

SO — Special Order

Ratings summary — 38AH044-134
UNIT SIZE
044
054
064
074
084
094
104
124
134

NOMINAL CAPACITY
kW
Tons
123
35
144
41
175
50
214
61
242
69
274
78
305
87
351
100
390
111

EER*
10.8
10.7
10.8
10.3
10.6
10.6
10.9
10.8
10.6

LEGEND
EER — Energy Efficiency Ratio
*Rated in accordance with ARI (Air Conditioning & Refrigeration
Institute) standard 365-87 (U.S.A.).
NOTE: Ratings are based on 7.2 C (45 F) suction temperature and
35 C (95 F) outside-air temperature, and include suction line losses.

44

Options and accessories — 38AH044-134
Factory-installed options
VAV (Variable Air Volume) Control Box Modification
makes the condensing unit compatible with the ModuPanel™
VAV controller. Includes factory-installed accumulator. Also
includes electric unloaders on compressors as follows:
1 — 38AH044
2 — 38AH054-084,104
3 — 38AH094
4 — 38AH124,134 (2 per module)
Single-Circuit Modification (Sizes 38AH044-084
Only) includes factory-installed accumulator and all piping
and wiring modifications required to make the unit single
circuit.
Single-Circuit Modification with VAV (Sizes 38AH044084 Only) includes piping, wiring, and electric unloaders
on compressors (one on 38AH044 and 2 on 38AH054084) to make the unit single circuit, VAV-ready. Also includes factory-installed accumulator.
Class F Fan Motors provide additional motor insulation
for high ambient temperature environments.
Condenser coil options are available to match coil construction to site conditions for the best corrosion durability.
Pre-coated coils provide protection in mild coastal environments. All copper coils are best suited for moderate coastal
applications, while post-coated coils provide superior protection in severe coastal and industrial applications.

Field-installed accessories
Transformer relay package for remote-control (24-v)
thermostat. One 2-stage thermostat is required for use with
the relay package.
Additional electric unloader package includes hardware to add an additional step of unloading (coil not
included).

Additional pressure unloader package includes all
unloader valves and hardware.
Gage panel package contains panel-mounted suction and
discharge pressure gages.
Hail guard package protects coils against damage from
hail and airborne debris.
ModuPanel control provides 10-step microprocessorbased control for VAV applications.
Motormastert III control maintains correct condensing
pressure at low ambient temperatures.
Sound-reduction kit provides a specially designed system
of fan propellers and stacks that lower noise without reducing unit performance; compatible with the Motormaster III
accessory.
Unloader conversion kit allows you to convert factoryinstalled pressure unloaders to electric unloading.
Compressor grille package protects the compressor area
after the unit is installed.
Condenser coil grille package protects the condenser
area after the unit is installed.
Carrier’s line of thermostats provide both programmable and non-programmable capability with the new
Debonair™ line of commercial programmable thermostats, the TEMP System controls offer communication
capability with staged heating and cooling, the Commercial Electronic thermostats provide 7-day programmable
capability for economical applications, while the nonprogrammable thermostats offer a multitude of staged
heating and cooling subbase options.

CONDENSER COIL PROTECTION APPLICATIONS
ENVIRONMENT*
DESCRIPTION
(Enviro-Shield™ Option)
Standard, Al/Cu
Pre-Coated Al/Cu
Cu/Cu
Post-Coated Al/Cu
Post-Coated Cu/Cu

Standard,
Non-Corrosive

Mild
Coastal

Moderate
Coastal

Severe
Coastal

Industrial

Combined
Coastal
and Industrial

X
X
X
X
X

X

LEGEND
Al/Cu
— Aluminum Fin with Copper Tube Coil
Cu/Cu
— Copper Fin with Copper Tube Coil
Enviro-Shield — Family of Coil Protection Options
Post-Coated — Organic Coating applied to Entire Coil Assembly
Pre-Coated
— Epoxy Coating Applied to Fin Stock Material
*See ‘‘Selection Guide: Environmental Corrosion Protection’’ Catalog No. 811-839 for more information.

45

Options and accessories —
38AH044-134 (cont)
CARRIER THERMOSTATS
COMMERCIAL ELECTRONIC THERMOSTAT

DEBONAIR™ COMMERCIAL PROGRAMMABLE
THERMOSTAT

Carrier
®

Pm
COOL

AUTO
HEAT

NON-PROGRAMMABLE THERMOSTAT
H

46

C

TEMP SYSTEM THERMOSTAT
WITH TIMECLOCK

Physical data — 38AH044-134
SI
38AH
NOMINAL CAPACITY (kW)
OPERATING WEIGHT WITH
REFRIGERANT (kg) (Approx.)
SHIPPING WEIGHT WITH
COIL PROTECTION ONLY (kg) (Approx.)
TYPICAL OPERATING REFRIGERANT
CHARGE (kg, approx.) R-22
COMPRESSOR Type...r/s
(Qty Cylinder)* Circuit†
Model No. 06EOil Charge (L)
Capacity Control Steps**
CONDENSER FANS (6 Blade)
Qty...Dia (mm)
Airflow (L/s)
Speed (r/s)
Total Power (kW)
CONDENSER COIL
Row...Fins per m
Face Area (m2)
Storage Capacity (kg per circuit, approx.)
FAN CYCLING CONTROLS ††
Close (kPa)
Open (kPa)
CONNECTIONS
Suction, ODF (in.)|
Liquid, ODF (in.)|
Hot Gas Bypass, ODF (in.)

Cu-Al Coils
Cu-Cu Coils
Cu-Al Coils
Cu-Cu Coils

044
123
1480
1609
1474
1605
28.1
(4) A
250
8.0

at 48.9 C

064
175
1617
1813
1601
1798

074
214
1729
1918
1715
1904

084
242
1840
2148
1814
2122

32.7

39.9

47.2

58.9

Reciprocating Semi-Hermetic...24.3 @ 50 Hz
(4) A
(6) B
(6) A
(6) B
(6) A
(6) B
250
265
265
275
275
299
8.0
9.9
9.9
9.9
9.9
9.0
4

(4) B
250
8.0

2...669
7.48
16

054
144
1501
1632
1492
1623

(6) A
299
9.0

(6) B
299
9.0

4...762
6...762
16 500
24 500
24 100
15.8
15.8
6.2
9.3
Enhanced Copper Tubes, Lanced Aluminum Fins
2...669
3...669
2...782
3...669
7.48
7.48
10.84
10.84
16
25
25
36
1758 ± 69
1103 ± 69
21⁄8
⁄
Ckt A
58

⁄

58

⁄
Ckt B
78

⁄

58

21⁄8
7⁄8
⁄

58

LEGEND
Cu-Al — Copper Tube, Aluminum Fin
Cu-Cu — Copper Tube, Copper Fin
ODF
— Outside Diameter, Female
*06E250 compressors have 4 cylinders; all others have 6.
†Circuit A compressor is lead on standard units; circuit B compressor is lead on optional single-circuit
units.
**Capacity control steps listed are for constant volume units with no accessories. Refer to Minimum
Outdoor-Air Operating Temperature and Unloading Sequences tables, pages 94-96, for additional
system capacity information.
††On all 044-134 units, fan no. 3 and 4; also on 38AH074,084 (dual-circuit units only) and 38AH094,104,
fans no. 5 and 6.
\For single-circuit units, suction ODF is 25⁄8 in. and liquid ODF is 11⁄8 inches. Single circuit units
have a factory-installed manifold; no field modification is required.
NOTES:
1. Certified dimensional drawings available on request.
2. Equivalent connection values in mm are as follows:
in.
mm
⁄
⁄
1⁄
1
2 ⁄8
25⁄8
58
78

18

15.9
22.2
28.6
54.0
66.7

47

Physical data — 38AH044-134 (cont)
SI (cont)
38AH

094

104

124
124A
175.5

134

134B
NOMINAL CAPACITY (kW)
274
305
214.5
OPERATING WEIGHT WITH
REFRIGERANT (Approx.) (kg)
Cu-Al
2308
2465
1647*
1647*
1647*
1759*
Cu-Cu
2637
2794
1843*
1843*
1843*
1843*
SHIPPING WEIGHT WITH
COIL PROTECTION AND SKID
(Approx.) (kg)
Cu-Al
2554
2717
1860*
1860*
1860*
1851
Cu-Cu
2883
3046
1968*
1968*
1968*
2040
TYPICAL OPERATING
R-22
REFRIGERANT
Charge (Approx.) (kg)
67.1
61.2
39.9
39.9
39.9
47.2
Qty of Circuits
2
2
1
1
1
1
COMPRESSOR Type...R/s
Reciprocating Semi-Hermetic...24.3
(Qty Cylinder)/Compressor†
(6)A1 (4)A2 (6)B1 (6)A1 (4)A2 (6)B1 (6)B2 (6)A1 (6)A2 (6)A1 (6)A2 (6)A1 (6)A2 (6)A1 (6)A2
Model No. 06E
−275 −250 −299 −265 −250 −265 −265 −275 −265 −275 −265 −275 −265 −299 −275
Oil Charge (L)
10
8
9
10
8
10
10
10
10
10
10
10
10
9
10
Circuit Capacity (%) (Approx.)
55
45
47
53
50
50
45
55
Capacity Control Steps**
6
8
4
4
4
4
CONDENSER FANS (6 Blade)
Qty...Dia (mm)
6...762
6...762
4...762
4...762
4...762
6...762
Airflow (L/s)
24 544
24 544
16 520
16 520
16 520
24 544
Speed (R/s)
15.8
15.8
15.8
15.8
15.8
15.8
Total Power (kW)
9.4
9.5
6.4
6.4
6.4
9.2
CONDENSER COIL
Enhanced Copper Tubes, Lanced Aluminum Fins
Rows...Fins per m
3...669.3
3...669.3
3...669.3
3...669.3
3...669.3
2...781.6
Face Area (sq m)
11.9
11.9
7.5
7.5
7.5
10.8
Storage Capacity
(kg per circuit, approx.)
81
81
50
50
50
50
at 49 C
FAN CYCLING CONTROLS ††
Close (kPa)
1758 ± 69
Open (kPa)
1103 ± 69
CONNECTIONS
Suction, ODF (in.)
21⁄8
21⁄8
25⁄8
25⁄8
25⁄8
25⁄8
7⁄8
7⁄8
Liquid, ODF (in.)
11⁄8
11⁄8
11⁄8
11⁄8
5⁄8
5⁄8
5 ⁄8
5⁄8
5⁄8
5⁄8
Hot Gas Bypass, ODF (in.)
LEGEND
Cu-Al — Copper Tube, Aluminum Fin
Cu-Cu — Copper Tube, Copper Fin
ODF
— Outside Diameter, Female
VAV
— Variable Air Volume
*Includes piping and trim kit.
†Compressor A1 is lead compressor on all circuits except circuit B on units 38AH094 and 104. Compressor B1 is lead on circuit B on units 38AH094 and 104. Compressors are shipped with minimum
oil charge.
**Capacity control steps listed are for constant volume units with no accessories. Refer to Minimum
Outdoor-Air Operating Temperature and Unloading Sequences tables, pages 94-96, for additional
system capacity information.
††On all 044-134 units, fan no. 3 and 4; also on 38AH074,084 (dual-circuit units only) and 38AH094,104,
fans no. 5 and 6.
NOTES:
1. Unit 38AH124 consists of one 124A module and one 124B module. Unit 38AH134 consists of one
134A module and one 134B module.
2. Certified dimensional drawings available on request.

48

124B
175.5

134A
175.5

ENGLISH
38AH
NOMINAL CAPACITY (Tons)
OPERATING WEIGHT WITH
REFRIGERANT (lb) (Approx.)
SHIPPING WEIGHT WITH
COIL PROTECTION ONLY (lb) (Approx.)
TYPICAL OPERATING REFRIGERANT
CHARGE (lb, approx.) R-22
COMPRESSOR Type...Rpm
(Qty Cylinder)* Circuit†
Model No. 06EOil Charge (pt)
Capacity Control Steps**
CONDENSER FANS (6 Blade)
Qty...Dia (in.)
Airflow (cfm)
Speed (rpm)
Total Power (kW)
CONDENSER COIL — Rows
Fins per...in.
Face Area (ft2)
Storage Capacity (lb per circuit, approx.)
FAN CYCLING CONTROLS ††
Close (psig)
Open (psig)
CONNECTIONS
Suction, ODF (in.)††
Liquid, ODF (in.)††
Hot Gas Bypass, ODF (in.)

Cu-Al Coils
Cu-Cu Coils
Cu-Al Coils
Cu-Cu Coils

044
35
3259
3547
3250
3538

054
41
3309
3597
3290
3578

064
50
3565
3998
3530
3963

074
61
3812
4229
3780
4197

084
69
4057
4735
4000
4678

72

88

104

130

62
(4) A
250
17

at 120 F

Reciprocating Semi-Hermetic...1458 @ 50 Hz
(4) A
(6) B
(6) A
(6) B
(6) A
(6) B
250
265
265
275
275
299
17
21
21
21
21
19
4

(4) B
250
17

4...30
35,000
950
6.2
2
17
80.5
35

2
17
80.5
35

(6) A
299
19

(6) B
299
19

6...30
52,000

51,000
950
9.3

3
17
80.5
55

2
19
116.7
55

3
17
116.7
80

255 ± 10
160 ± 10
21⁄8
⁄
Ckt A
58

⁄

58

⁄
Ckt B
78

⁄

58

21⁄8
7⁄8
⁄

58

LEGEND
Cu-Al — Copper Tube, Aluminum Fn
Cu-Cu — Copper Tube, Copper Fn
ODF
— Outside Diameter, Female
*06E250 compressors have 4 cylinders; all others have 6.
†Circuit A compressor is lead on standard units; circuit B compressor is lead on optional single-circuit
units.
**Capacity control steps listed are for constant volume units with no accessories. Refer to Minimum
Outdoor-Air Operating Temperature and Unloading Sequences tables, pages 94-96, for additional
system capacity information.
††On all 044-134 units, fan no. 3 and 4; also on 38AH074,084 (dual-circuit units only) and 38AH094,104,
fans no. 5 and 6.
\For single-circuit units, suction ODF is 25⁄8 in. and liquid ODF is 11⁄8 inches. Single circuit units
have a factory-installed manifold; no field modification is required.
NOTE: Certified dimensional drawings available on request.

49

Physical data — 38AH044-134 (cont)
ENGLISH (cont)
38AH

094

104

124
124A
50

134

134B
NOMINAL CAPACITY (Tons)
78
87
61
OPERATING WEIGHT WITH
REFRIGERANT (Approx.) (lb)
Cu-Al
5088
5435
3630*
3630*
3630*
3877*
Cu-Cu
5813
6160
4063*
4063*
4063*
4294*
SHIPPING WEIGHT WITH
COIL PROTECTION AND SKID
(Approx.) (lb)
Cu-Al
5630
5990
3907*
3907*
3907*
4080
Cu-Cu
6355
6715
4340*
4340*
4340*
4497
TYPICAL OPERATING
R-22
REFRIGERANT
Charge (Approx.) (lb)
148
135
88
88
88
104
Qty of Circuits
2
2
1
1
1
1
COMPRESSOR Type...Rpm
Reciprocating Semi-Hermetic...1450
(Qty Cylinder)/Compressor†
(6)A1 (4)A2 (6)B1 (6)A1 (4)A2 (6)B1 (6)B2 (6)A1 (6)A2 (6)A1 (6)A2 (6)A1 (6)A2 (6)A1 (6)A2
Model No. 06E
−275 −250 −299 −265 −250 −265 −265 −275 −265 −275 −265 −275 −265 −299 −275
Oil Charge (pt)
21
17
19
21
17
21
21
21
21
21
21
21
21
19
21
Circuit Capacity (%) (Approx.)
55
45
47
53
50
50
45
55
Capacity Control Steps**
6
8
4
4
4
4
CONDENSER FANS (6 Blade)
Qty...Dia (in.)
6...30
6...30
4...30
4...30
4...30
6...30
Airflow (cfm)
52,000
52,000
35,000
35,000
35,000
52,000
Speed (rpm)
950
950
950
950
950
950
Total Power (kW)
9.4
9.5
6.4
6.4
6.4
9.2
CONDENSER COIL
Enhanced Copper Tubes, Lanced Aluminum Fin
Rows...Fins per in.
3...17
3...17
3...17
3...17
3...17
2...19
Face Area (sq ft)
128.3
128.3
80.5
80.5
80.5
116.7
Storage Capacity
(lb per ckt, approx.)
178
178
110
110
110
110
at 120 F
FAN CYCLING CONTROLS ††
Close (psig)
255 ± 10
Open (psig)
160 ± 10
CONNECTIONS
Suction, ODF (in.)
21⁄8
21⁄8
25⁄8
25⁄8
25⁄8
25⁄8
7⁄8
7⁄8
Liquid, ODF (in.)
11⁄8
11⁄8
11⁄8
11⁄8
5⁄8
5⁄8
5 ⁄8
5⁄8
5⁄8
5⁄8
Hot Gas Bypass, ODF (in.)
LEGEND
Cu-Al — Copper Tube, Aluminum Fin
Cu-Cu — Copper Tube, Copper Fin
ODF
— Outside Diameter, Female
VAV
— Variable Air Volume
*Includes piping and trim kit.
†Compressor A1 is lead compressor on all circuits except circuit B on units 38AH094 and 104. Compressor B1 is lead on circuit B on units 38AH094 and 104. Compressors are shipped with minimum
oil charge.
**Capacity control steps listed are for constant volume units with no accessories. Refer to Minimum
Outdoor-Air Operating Temperature and Unloading Sequences tables, pages 94-96, for additional
system capacity information.
††On all 044-134 units, fan no. 3 and 4; also on 38AH074,084 (dual-circuit units only) and 38AH094,104,
fans no. 5 and 6.
NOTES:
1. Unit 38AH124 consists of one 124A module and one 124B module. Unit 38AH134 consists of one
134A module and one 134B module.
2. Certified dimensional drawings available on request.

50

124B
50

134A
50

Dimensions — 38AH044-134
SIZES 044-064 (See Page 53 for Corner Weights)
UNIT
38AH
044
044C
054
054C
064
064C

DIMENSION
Y
38-23⁄49
[984 mm]
38-31⁄89
[994 mm]
38-21⁄29
[978 mm]
38-39
[991 mm]
38-21⁄29
[978 mm]
38-33⁄169
[995 mm]

DIMENSION
X
48-1⁄29
[1232 mm]
48-9⁄169
[1234 mm]
48-3⁄169
[1224 mm]
48-3⁄89
[1229 mm]
48-1⁄29
[1232 mm]
48-5⁄89
[1235 mm]

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT
044
044,054
064
044,054
064

VOLTAGE
230
346
346
380/415
380/415

Hz
50
50
50
50
50

DIAMETER
35⁄89 [92 mm]
21⁄29 [63 mm]
35⁄89 [92 mm]
21⁄29 [63 mm]
35⁄89 [92 mm]

QTY.
1
1
1
1
1

NOTES:
1. The approximate operating weight of the unit is:
38AH044
3259 lb (1480 kg)
38AH044C
3547 lb (1609 kg)
38AH054
3309 lb (1501 kg)
38AH054C
3597 lb (1632 kg)
38AH064
3565 lb (1617 kg)
38AH064C
3998 lb (1813 kg)
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]
3. Mounting holes may be used to mount unit to concrete pad. They are not recommended for
mounting unit to spring isolators.
4. Two 51 mm (2 in.) dia holes are recommended for parallel conductors on 044 (230-V) units.
5. Circled numerals in Top View refer to condenser fans; refer to Electrical Data section, Fans
table, page 88 and Wiring Diagram book.
6. If spring isolators are used, a perimeter support channel between the unit and the isolators is
recommended.

51

Dimensions — 38AH044-134 (cont)
SIZES 074, 084 (See Page 53 for Corner Weights)
UNIT
38AH
074
074C
084
084C

DIMENSION
Y
38-31⁄89
[994 mm]
38-35⁄89
[1006 mm]
38-39
[991 mm]
38-311⁄169
[1008 mm]

DIMENSION
X
48-813⁄1688
[1443 mm]
48-81⁄89
[1425 mm]
48-99
[1448 mm]
48-89
[1422 mm]

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive
Engineers

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT
074,084
074,084

VOLTAGE
346
380/415

Hz
50
50

DIAMETER
35⁄89 [92 mm]
35⁄89 [92 mm]

QTY.
1
1

NOTES:
1. The approximate operating weight of the unit is:
38AH074

3812 lb (1729 kg)

38AH074C

4229 lb (1918 kg)

38AH084

4057 lb (1840 kg)

38AH084C
4735 lb (2148 kg)
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]
3. Mounting holes may be used to mount unit to concrete pad. They are not
recommended for mounting unit to spring isolators.
4. Circled numerals in Top View refer to condenser fans; refer to Electrical
Data section, Fans table, page 88 and Wiring Diagram book.
5. If spring isolators are used, a perimeter support channel between the unit
and the isolators is recommended.

52

OPERATIONAL CORNER WEIGHTS WITH
REFRIGERANT CHARGE (Approximate) — Kg
UNIT
38AH

TOTAL
WEIGHT

044
044C
054
054C
064
064C
074
074C
084
084C

1480
1609
1501
1632
1617
1813
1729
1918
1840
2148

C — Copper Fin Coils

OPERATIONAL CORNER WEIGHT
A
B
C
D
426
405
316
332
460
438
347
364
437
411
316
337
469
444
350
369
462
459
347
350
510
508
397
399
520
447
352
410
577
481
391
470
553
476
375
436
646
538
438
526

OPERATIONAL CORNER WEIGHTS WITH
REFRIGERANT CHARGE (Approximate) — Lb
UNIT
38AH

TOTAL
WEIGHT

044
044C
054
054C
064
064C
074
074C
084
084C

3259
3547
3309
3597
3565
3998
3812
4229
4057
4735

OPERATIONAL CORNER WEIGHT
A
B
C
D
939
893
695
732
1013
967
765
802
964
905
697
742
1034
978
771
814
1018
1011
765
771
1125
1117
874
879
1146
986
777
903
1272
1059
862
1035
1220
1049
827
961
1425
1186
965
1159

C — Copper Fin Coils

53

Dimensions — 38AH044-134 (cont)
UNIT 38AH094
DIMENSIONS
OPERATIONAL CORNER
ft-in. [mm]
WEIGHTS — lb [kg]
X
Y
A
B
C
D
094
5-6 [1676] 2-7 [787] 1114 [505] 2192 [994] 1182 [536] 601 [273]
094C 5-6 [1676] 2-7 [787] 1273 [577] 2504 [1136] 1350 [612] 686 [311]

UNIT
38AH

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive
Engineers

54

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT
38AH

NOTES:
1. The approximate operating weight of the unit is:
38AH094 — 5088 lb [2308 Kg]
38AH094C — 5813 lb [2637 Kg]
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]

094

VOLTAGE
346
380/415

DIAMETER
in. [mm]
35⁄8
92]

QUANTITY
1

3. Mounting holes may be used to mount unit to
concrete pad. They are not recommended for
mounting unit to spring isolators.
4. Circled numerals in Top View refer to condenser
fans; refer to Electrical Data section, Fans table,
page 88 and Wiring Diagram book.
5. If spring isolators are used, a perimeter support
channel between the unit and the isolators is
recommended.

UNIT 38AH104
DIMENSIONS
OPERATIONAL CORNER
ft-in. [mm]
WEIGHTS — lb [kg]
X
Y
A
B
C
D
104
5-3 [1600] 2-91⁄2 [851] 1240 [562] 2138 [970] 1302 [591] 755 [342]
104C 5-3 [1600] 2-91⁄2 [851] 1405 [637] 2423 [1099] 1476 [670] 856 [388]

UNIT
38AH

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive
Engineers

NOTES:
1. The approximate operating weight of the unit is:
38AH104 — 5435 lb [2465 Kg]
38AH104C — 6160 lb [2794 Kg]
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT
38AH
104

VOLTAGE
346
380/415

DIAMETER
in. [mm]
35⁄8
[92]

QUANTITY
1

3. Mounting holes may be used to mount unit to concrete
pad. They are not recommended for mounting unit to
spring isolators.
4. Circled numerals in Top View refer to condenser fans;
refer to Electrical Data section, Fans table, page 88
and Wiring Diagram book.
5. If spring isolators are used, a perimeter support channel between the unit and the isolators is recommended.

55

Dimensions — 38AH044-134 (cont)
UNIT 38AH124
UNIT
38AH
MODULE
124A
124B
124A-C
124B-C

DIMENSIONS
ft-in. [mm]
X
Y
K
L
—
—
4-15⁄8 [1260] 3-21⁄8 [968]
—
—
4-15⁄8 [1260] 3-21⁄8 [968]
—
—
4-15⁄8 [1260] 3-27⁄8 [987]
—
—
4-15⁄8 [1260] 3-27⁄8 [987]

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive
Engineers

56

OPERATIONAL CORNER
WEIGHTS — lb [kg]
A
B
C
D
1037 1030 779 785
[470] [467] [353] [356]

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT
38AH
MODULE
124A
124B

VOLTAGE

DIAMETER
in. [mm]

QUANTITY

346, 380/415

35⁄8
[92]

1

1144 1137 889 894
[519] [516] [403] [406]

NOTES:
1. The approximate operating weight of the unit is:
38AH124 — 7260 lb [3293 Kg]
38AH124C — 8126 lb [3686 Kg]
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]
3. Mounting holes may be used to mount unit to concrete
pad. They are not recommended for mounting unit to
spring isolators.

4. Circled numerals in Top View refer to condenser fans; refer to
Electrical Data section, Fans table, page 88 and Wiring Diagram
book.
5. If spring isolators are used, a perimeter support channel between
the assembled unit and the isolators is required. Do not support
each module separately.
6. Each module must be rigged into position separately. The unit
must not be rigged after modules have been connected.
7. Suction and liquid connections can exit on either side of the unit.
8. Field power supply connections are required for each module.

UNIT 38AH134
UNIT
38AH
MODULE
134A
134B
134A-C
134B-C

DIMENSIONS
ft-in. [mm]
X
Y
K
L
4-15⁄8 [1260] 3-21⁄8 [968]
—
—
—
—
4-87⁄8 [1445] 3-31⁄8 [994]
4-15⁄8 [1260] 3-27⁄8 [987]
—
—
—
—
4-81⁄8 [1426] 3-33⁄4 [1010]

OPERATIONAL CORNER
WEIGHTS — lb [kg]
A
B
C
D
1037 [470] 1030 [467] 779 [353] 785 [356]
1167 [529] 997 [452] 789 [358] 924 [419]
1144 [519] 1137 [516] 889 [403] 894 [406]
1293 [587] 1080 [490] 874 [396] 1047 [475]

CHART 1, FIELD POWER SUPPLY CONNECTIONS
UNIT 38AH
MODULE
134A
134B

VOLTAGE
346
380/415

DIAMETER
in. [mm]
35⁄8
[92]

QUANTITY
1

LEGEND
C
— Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive
Engineers

NOTES:
1. The approximate operating weight of the unit is:
38AH134 — 7507 lb [3405 Kg]
38AH134C — 8357 lb [3791 Kg]
2. Unit must have clearances for airflow as follows:
Top — Do not restrict in any way.
Ends — 5 ft [153 cm]
Sides — 6 ft [183 cm]
3. Mounting holes may be used to mount unit to concrete pad. They are
not recommended for mounting unit to spring isolators.

4. Circled numerals in Top View refer to condenser fans; refer to Electrical Data section, Fans
table, page 88 and Wiring Diagram book.
5. If spring isolators are used, a perimeter support channel between the assembled unit and the
isolators is required. Do not support each module separately.
6. Each module must be rigged into position separately. The unit must not be rigged after modules have been connected.
7. Suction and liquid connections can exit on either side of the unit.
8. Field power supply connections are required for each module.

57

Selection procedure, 2-circuit units —
38AH044-134
SI

I Determine required cooling capacity of each
circuit, saturated suction temperature (SST) for
each circuit, and the temperature of the air
entering the condensing unit.
Given:
Circuit A Circuit B
Cooling Load . . . . . . . . . . . . . . . . . 78 kW . . . 86 kW
Saturated suction
temperature . . . . . . . . . . . . . . . . . . . 6 C . . . . . . 6 C
Entering-air temperature . . . . . . . . . 35 C . . . . . 35 C

II Enter the Condensing Unit Circuit and Module
Ratings tables for each circuit at the given suction temperatures and entering-air temperatures; select a unit that satisfies the requirements
of each circuit.
The 38AH064 unit has a cooling capacity of 79.5 kW
at 6 C SST for circuit A, and a cooling capacity of
88.6 kW at 6 C SST for circuit B, both at an enteringair temperature of 35 C. The unit meets requirements
according to the given conditions.

ENGLISH

I Determine required cooling capacity of each circuit, saturated suction temperature (SST) for
each circuit, and the temperature of the air entering the condensing unit.
Given:
Circuit A
Circuit B
Cooling Load . . . . 252,000 Btuh . . . 281,000 Btuh
Saturated suction
temperature . . . . . . . . . . . . 40 F . . . . . . . . . . . 40 F
Entering-air temperature . . . 95 F . . . . . . . . . . . 95 F

II Enter the Condensing Unit Circuit and Module
Ratings tables for each circuit at the given suction temperatures and entering-air temperatures; select a unit that satisfies the requirements
of each circuit.
The 38AH064 unit has a cooling capacity of
256,000 Btuh at 40 F SST for circuit A, and a
cooling capacity of 286,000 Btuh at 40 F SST for
circuit B, both at an entering-air temperature of 95 F.
The unit meets requirements according to the given
conditions.

Selection procedure, single-circuit units —
38AH044-084 only
SI

I Determine required capacity, saturated suction
temperature (SST) at the compressors, and the
temperature of the air entering the condensing
unit.
Given:
Cooling Load . . . . . . . . . . . . . . . . . . . . . . . . . . 156 kW
Saturated suction temperature . . . . . . . . . . . . . . 4.0 C
Entering-air temperature . . . . . . . . . . . . . . . . . . . 35 C

II Enter the Condensing Unit Ratings table at the
given suction temperature and entering-air temperature for the required cooling capacity.
The 38AH064 unit has a cooling capacity of
156.1 kW at 4 C SST and 35 C entering-air temperature; the unit meets requirements according to the given
conditions.

ENGLISH

I Determine required capacity, saturated suction
temperature (SST) at the compressors, and the
temperature of the air entering the condensing
unit.
Given:
Cooling Load . . . . . . . . . . . . . . . . . . . . . 535,000 Btuh
Saturated suction temperature . . . . . . . . . . . . . . . 40 F
Entering-air temperature . . . . . . . . . . . . . . . . . . . 95 F

58

II Enter the Condensing Unit Ratings table at the
given suction temperature and entering-air temperature for the required cooling capacity.
The 38AH064 unit has a cooling capacity of
542,000 Btuh at 40 F SST and 95 F entering-air
temperature; the unit meets requirements according to
the given conditions.

Performance data — 38AH044-134
CONDENSING UNIT RATINGS — SI
38AH044

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
105.5
24.2
33.3
114.2
24.7
33.7
123.6
25.1
34.2
133.1
25.6
34.7
143.1
26.1
35.3
153.5
26.6
35.9
164.1
27.0
36.6

27
96.9
26.3
39.2
105.4
27.0
39.5
114.3
27.7
39.9
123.6
28.4
40.5
133.1
29.0
41.0
143.1
29.7
41.6
153.3
30.4
42.3

30
92.6
27.3
42.1
100.8
28.2
42.4
109.6
28.9
42.8
118.7
29.7
43.3
128.0
30.5
43.9
137.9
31.2
44.5
147.9
31.9
45.1

32
89.6
27.9
44.0
97.8
28.8
44.3
106.5
29.7
44.8
115.4
30.5
45.2
124.7
31.4
45.7
134.3
32.2
46.4
144.2
32.9
47.0

Air Temperature
35
85.1
28.8
46.9
93.2
29.8
47.2
101.7
30.8
47.7
110.4
31.7
48.1
119.5
32.7
48.6
128.9
33.6
49.2
138.6
34.5
49.8

Entering Condenser (C)
38
41
43
80.6
76.1
73.1
29.4
30.1
30.4
49.9
52.8
54.8
88.6
83.9
80.7
30.6
31.4
31.8
50.2
53.0
55.0
96.9
92.1
88.8
31.8
32.6
33.1
50.5
53.4
55.3
105.5
100.4
97.1
32.8
33.8
34.4
51.0
53.8
55.7
114.4
109.1
105.6
33.9
35.0
35.7
51.4
54.3
56.2
123.6
118.2
114.5
34.9
36.1
36.9
52.0
54.8
56.7
133.0
127.3
123.6
36.0
37.2
38.1
52.6
55.4
57.3

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
123.0
29.5
35.7
133.3
30.2
36.0
144.2
30.9
36.5
155.4
31.6
36.5
167.0
32.5
37.6
178.9
33.2
38.4
191.2
33.9
39.2

27
113.2
32.0
41.6
123.0
32.9
41.8
133.4
33.8
42.2
144.2
34.7
42.7
155.3
35.7
43.3
166.8
36.6
44.0
179.0
37.6
44.7

30
108.1
33.0
44.5
117.8
34.2
44.8
128.0
35.1
45.2
138.5
36.2
45.5
149.4
37.2
46.1
160.7
38.3
46.7
172.2
39.3
47.4

32
104.9
33.7
46.5
114.3
34.9
46.7
124.4
36.0
47.1
134.7
37.1
47.5
145.5
38.3
48.0
156.6
39.4
48.6
168.0
40.5
49.3

Air Temperature
35
100.0
34.6
49.5
109.1
36.0
49.6
119.0
37.2
50.0
129.1
38.5
50.3
139.6
39.7
50.8
150.5
41.0
51.4
161.6
42.2
52.0

Entering Condenser (C)
38
41
43
95.1
90.2
87.0
35.5
36.2
36.7
52.4
55.4
57.4
104.0
98.9
95.6
37.0
37.8
38.3
52.6
55.5
57.5
113.6
108.3
104.8
38.3
39.3
39.9
52.9
55.8
57.8
123.5
117.9
114.1
39.6
40.8
41.5
53.3
56.1
58.1
133.8
127.9
124.0
41.0
42.3
43.0
53.7
56.5
58.5
144.4
138.3
134.2
42.4
43.7
44.6
54.2
57.0
59.0
155.2
148.8
144.6
43.7
45.2
46.1
54.8
57.6
59.5

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
148.5
35.7
34.7
160.3
36.6
35.1
172.9
37.5
35.7
185.8
38.4
36.4
199.4
39.3
37.2
213.0
40.2
38.0
227.0
41.1
38.9

27
137.2
38.6
40.5
148.6
39.8
40.9
160.7
41.0
41.5
173.1
42.2
42.1
185.9
43.4
42.8
198.9
44.5
43.6
213.0
45.7
44.4

30
131.7
40.0
43.5
142.8
41.3
43.8
154.6
42.6
44.3
166.6
43.9
44.9
179.2
45.3
45.6
192.4
46.5
46.4
205.8
47.9
47.2

32
127.9
40.8
45.5
138.9
42.3
45.7
150.5
43.6
46.3
162.4
45.0
46.8
174.7
46.4
47.5
187.5
47.8
48.2
200.3
49.3
49.1

Air Temperature
35
122.4
42.0
48.3
133.1
43.5
48.6
144.4
45.0
49.1
156.1
46.6
49.7
168.1
48.2
50.3
180.6
49.7
51.1
193.7
51.3
51.8

Entering Condenser (C)
38
41
43
116.9
111.4
107.8
43.1
44.0
44.6
51.3
54.2
56.2
127.3
121.6
117.8
44.8
45.8
46.4
51.6
54.5
56.4
138.4
132.4
128.4
46.4
47.6
48.3
52.0
54.9
56.9
149.8
143.4
139.2
48.1
49.4
50.2
52.6
55.4
57.3
161.4
154.8
150.5
49.7
51.2
52.2
53.2
56.0
57.9
173.7
166.7
162.2
51.4
53.1
54.1
53.9
56.7
58.5
186.0
178.9
174.0
53.2
54.9
56.0
54.6
57.4
59.3

SST
(C)
−2

0

2

4

6

8

10

46
68.4
30.9
57.7
75.9
32.4
57.9
83.9
33.8
58.3
92.0
35.3
58.6
100.4
36.7
59.0
109.1
38.0
59.6
117.9
39.3
60.1

49
63.8
31.2
60.7
71.1
32.9
60.9
78.9
34.4
61.1
86.8
36.0
61.5
95.1
37.5
61.9
103.5
39.0
62.4
112.2
40.5
62.9

52
59.2
31.3
63.6
66.4
33.1
63.7
73.9
34.9
64.0
81.7
36.6
64.4
89.7
38.3
64.8
98.0*
39.9*
65.3*
106.5*
41.5*
65.8*

49
77.4
37.6
63.3
85.4
39.6
63.5
94.1
41.5
63.6
103.0
43.4
63.9
112.3
45.1
64.2
122.0
47.0
64.7
132.0*
48.8*
65.2*

52
72.6*
38.0*
66.3*
80.4*
40.1*
66.4*
88.8*
42.2*
66.6*
97.4*
44.1*
66.9*
106.5*
46.1*
67.2*
116.0*
48.0*
67.5*
125.5*
50.0*
68.0*

49
97.0
46.0
62.1
106.4
48.2
62.3
116.4
50.4
62.7
126.7
52.6
63.1
137.3
54.7
63.6
148.4
57.0
64.2
159.6
59.1
64.8

52
91.6
46.5
65.1
100.7
48.9
65.2
110.5
51.2
65.6
120.5
53.5
66.0
130.8*
55.9*
66.4*
141.6*
58.2*
67.0*
152.5*
60.5*
67.6*

38AH054
SST
(C)
−2

0

2

4

6

8

10

46
82.2
37.3
60.3
90.4
39.1
60.5
99.4
40.7
60.7
108.5
42.4
61.0
118.1
44.2
61.3
128.2
45.9
61.8
138.3
47.5
62.3

38AH064
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

—
—
—
—

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

46
102.3
45.4
59.2
112.1
47.4
59.3
122.4
49.5
59.8
133.0
51.5
60.2
143.8
53.5
60.7
155.2
55.6
61.4
166.8
57.6
62.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

59

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — SI (cont)
38AH074

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
181.6
45.2
34.1
194.7
46.5
34.6
209.1
47.8
35.3
224.6
49.1
36.0
239.0
50.4
36.8
257.0
51.6
37.6
273.0
52.8
38.5

27
169.2
48.7
39.8
182.1
50.2
40.3
196.3
51.8
41.0
210.5
53.4
41.6
225.1
55.0
42.4
241.0
56.6
43.2
257.0
58.3
44.0

30
163.2
50.2
42.8
176.1
51.9
43.2
189.3
53.7
43.8
203.5
55.4
44.4
217.9
57.2
45.2
234.0
59.0
45.9
248.0
60.7
46.8

32
159.1
51.1
44.7
171.9
53.0
45.0
185.3
54.8
45.7
199.4
56.7
46.3
212.8
58.5
47.0
228.4
60.4
47.8
243.0
62.3
48.6

Air Temperature
35
153.1
52.4
47.6
165.6
54.5
47.9
178.4
56.5
48.5
192.4
58.4
49.1
205.6
60.5
49.8
221.0
62.6
50.6
236.0
64.6
51.4

Entering Condenser (C)
38
41
43
147.1
141.0
137.0
53.8
54.9
55.6
50.5
53.5
55.4
159.3
153.0
148.8
55.9
57.2
57.9
50.8
53.7
55.6
172.1
165.5
161.2
58.1
59.5
60.4
51.3
54.1
56.1
185.2
178.1
173.8
60.2
61.7
62.7
51.9
54.7
56.6
198.3
192.1
186.9
62.4
64.0
65.1
52.6
55.4
57.3
212.6
205.2
200.0
64.5
66.5
67.6
53.3
56.1
57.9
227.1
219.5
214.1
66.8
68.8
70.1
54.1
56.9
58.7

46
131.0
56.6
58.4
142.5
59.1
58.5
154.6
61.6
58.9
166.9
64.2
59.4
179.6
66.7
60.0
192.5
69.4
60.7
206.6
71.9
61.5

49
125.0
57.4
61.3
136.2
60.1
61.4
148.1
62.8
61.8
160.1
65.4
62.2
172.5
68.1
62.8
185.1
71.0
63.5
198.0
73.7
64.2

52
118.9
58.1
64.3
129.8
61.0
64.4
141.4
63.8
64.7
153.2
66.6
65.1
165.3
69.5
65.6
177.6*
72.4*
66.2*
190.4*
75.3*
66.9*

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
204.0
54.1
36.2
221.0
55.6
36.3
238.0
57.0
36.7
256.0
58.5
37.1
274.0
60.0
37.7
294.0
61.6
38.4
314.0
63.2
39.2

27
190.6
57.9
42.2
206.0
59.7
42.3
223.0
61.5
42.6
240.0
63.3
42.9
258.0
65.1
43.4
276.0
67.1
44.1
294.0
69.1
44.8

30
183.9
59.5
45.2
198.9
61.5
45.3
215.0
63.5
45.5
232.0
65.5
45.8
250.0
67.5
46.3
268.0
69.7
46.9
286.0
71.7
47.6

32
179.3
60.6
47.2
194.2
62.7
47.3
210.0
64.9
47.5
226.0
66.9
47.8
244.0
69.1
48.2
262.0
71.3
48.8
280.0
73.5
49.5

Air Temperature
35
172.7
62.1
50.2
187.1
64.4
50.3
203.0
66.7
50.4
219.0
68.9
50.7
236.0
71.3
51.1
252.0
73.7
51.7
270.0
76.1
52.3

Entering Condenser (C)
38
41
43
166.1
159.6
155.3
63.4
64.8
65.5
53.1
56.2
58.2
180.1
173.2
168.6
65.9
67.3
68.2
53.2
56.2
58.2
195.3
187.9
183.1
68.3
69.9
70.9
53.4
56.4
58.4
211.0
203.0
197.9
70.9
72.7
73.7
53.6
56.6
58.6
227.0
219.0
214.0
73.3
75.3
76.5
54.1
57.0
58.9
244.0
236.0
230.0
75.9
78.0
79.3
54.5
57.4
59.4
261.0
252.0
246.0
78.5
80.7
82.1
55.2
58.0
59.9

46
148.9
66.6
61.2
161.7
69.6
61.2
175.7
72.4
61.4
190.1
75.3
61.5
205.0
78.3
61.9
221.0
81.3
62.3
236.0
84.3
62.7

49
142.5
67.7
64.2
154.9
70.8
64.2
168.5
73.8
64.3
182.5
76.9
63.5
197.0
79.9
64.8
212.0
83.1
65.2
228.0
86.3
65.6

52
136.2*
68.6*
67.2*
148.2*
71.8*
67.2*
161.3*
75.0*
67.3*
174.9*
78.2*
67.4*
189.0*
81.5*
67.7*
204.0*
84.8*
68.1*
219.0*
88.1*
68.5*

SST
(C)
−2

0

2

4

6

8

10

38AH084
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

60

—
—
—
—

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT RATINGS — SI (cont)
38AH094
SST
(C)

−2

0

2

4

6

8

10

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

21
233.0
58.1
35.5
33.8
33.6
32.3
251.0
59.7
36.2
34.2
34.0
32.4
269.0
61.5
37.1
34.9
34.6
32.8
289.0
63.3
38.0
35.6
35.2
33.3
309.0
65.1
39.0
36.4
35.8
33.8
329.0
66.9
40.1
37.3
36.5
34.3
350.0
68.7
41.1
38.2
37.2
34.9

27
216.5
62.3
41.2
39.6
39.7
38.5
234.0
64.3
41.8
39.9
40.1
38.6
252.0
66.5
42.6
40.5
40.6
39.0
270.0
68.6
43.5
41.2
41.2
39.4
290.0
70.8
44.4
41.9
41.9
39.9
309.0
73.0
45.4
42.7
42.6
40.4
329.0
75.2
46.4
43.6
43.3
41.0

30
209.1
64.3
44.0
42.5
42.8
41.5
226.0
66.6
44.5
42.8
43.1
41.7
243.0
68.9
45.3
43.4
43.7
42.0
261.0
71.3
46.2
44.0
44.3
42.4
279.0
73.6
47.1
44.7
44.9
42.9
299.0
76.0
48.0
45.5
45.6
43.5
319.0
78.4
49.1
46.3
46.4
44.1

32
202.9
65.6
45.9
44.5
44.8
43.6
220.2
67.9
46.4
44.8
45.1
43.7
237.0
70.4
47.2
45.3
45.7
44.0
255.0
72.9
48.0
45.9
46.3
44.4
274.0
75.4
48.9
46.5
46.9
44.9
292.0
77.9
49.8
47.3
47.6
45.5
312.0
80.5
50.8
48.2
48.4
46.1

Air Temperature
35
195.6
67.4
48.8
47.4
47.8
46.7
211.7
69.9
49.2
47.7
48.1
46.8
228.0
72.5
49.9
48.2
48.6
47.1
246.0
75.2
50.7
48.7
49.2
47.4
264.0
77.9
51.6
49.3
49.9
47.9
282.0
80.6
52.5
50.1
50.6
48.4
301.0
83.3
53.5
50.9
51.3
49.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (kW)

Entering Condenser (C)
38
41
43
187.3
178.7
173.1
68.9
70.3
71.1
51.6
54.5
56.5
50.4
53.4
55.4
50.8
53.9
55.9
49.7
52.8
54.8
203.3
194.8
188.5
71.7
73.3
74.2
52.0
54.9
56.8
50.6
53.5
55.5
51.1
54.1
56.0
49.8
52.8
54.8
219.6
211.0
204.6
74.4
76.2
77.4
52.7
55.5
57.4
51.0
53.9
55.9
51.6
54.5
56.5
50.1
53.1
55.1
237.0
227.0
221.7
77.2
79.3
80.5
53.4
56.2
58.0
51.5
54.4
56.3
52.1
55.0
57.0
50.4
53.4
55.4
254.0
245.0
238.0
80.2
82.4
83.7
54.3
57.0
58.8
52.1
55.0
56.9
52.8
55.7
57.6
50.9
53.8
55.8
273.0
263.0
256.0
83.1
85.5
87.0
55.2
57.9
59.6
52.9
55.7
57.5
53.5
56.4
58.3
51.4
54.4
56.3
291.0
281.0
274.0
86.0
88.7
90.3
56.2
58.8
60.5
53.7
56.4
58.3
54.2
57.1
59.0
52.0
54.9
56.9

46
164.8
72.2
59.4
58.3
58.9
57.9
180.0
75.6
59.6
58.4
59.0
57.9
196.0
78.9
60.2
58.8
59.4
58.1
211.9
82.3
60.8
59.2
59.9
58.4
228.0
85.6
61.5
59.7
60.5
58.8
246.0
89.1
62.3
60.3
61.1
59.3
263.0
92.5
63.2
61.0
61.8
59.8

49
156.5
73.2
62.3
61.3
61.9
60.9
171.4
76.7
62.5
61.4
62.0
60.9
186.4
80.2
63.0
61.7
62.3
61.1
202.2
83.8
63.5
62.1
62.7
61.3
219.2
87.5
64.2
62.5
63.3
61.7
235.0
91.0
65.0
63.1
64.0
62.2
253.0
94.7
65.9
63.8
64.7
62.7

52
148.2
73.9
65.3
64.3
64.9
63.9
162.7
77.7
65.4
64.4
64.9
63.9
177.9
81.5
65.8
64.6
65.3
64.1
193.4
85.2
66.3
65.0
65.6
64.3
209.3
89.1
66.9
65.4
66.2
64.7
225.0
92.9
67.7*
66.0
66.8
65.1
242.0
96.8
68.5*
66.6
67.5*
65.6

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

61

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — SI (cont)
38AH104
SST
(C)

−2

0

2

4

6

8

10

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

21
265.0
62.8
34.4
35.7
32.6
33.5
285.0
64.9
35.1
36.5
33.1
34.0
307.0
66.9
36.0
37.5
33.6
34.7
328.0
68.9
36.9
38.5
34.2
35.3
351.0
71.0
37.9
39.6
34.8
36.0
375.0
73.1
38.9
40.7
35.5
36.7
400.0
75.4
39.9
41.9
36.2
37.5

27
245.0
67.7
40.0
41.2
38.6
39.5
264.0
70.1
40.6
41.9
39.1
40.0
285.0
72.6
41.4
42.9
39.6
40.7
306.0
75.0
42.3
43.8
40.2
41.4
328.0
77.5
43.2
44.8
40.8
42.1
351.0
80.0
44.1
45.9
41.5
42.8
374.0
82.6
45.2
47.0
42.2
43.6

30
235.0
70.1
42.8
43.9
41.7
42.6
254.0
72.6
43.4
44.7
42.1
43.1
273.0
75.3
44.1
45.5
42.6
43.7
294.0
78.0
44.9
46.4
43.2
44.4
316.0
80.7
45.8
47.4
43.8
45.1
338.0
83.5
46.8
48.5
44.5
45.8
361.0
86.3
47.8
49.5
45.2
46.6

32
229.0
71.6
44.7
45.8
43.7
44.5
247.0
74.3
45.2
46.5
44.0
45.0
267.0
77.0
46.0
47.3
44.6
45.7
287.0
79.8
46.7
48.2
45.1
46.3
308.0
82.7
47.6
49.2
45.8
47.1
330.0
85.6
48.6
50.2
46.5
47.8
353.0
88.5
49.5
51.3
47.2
48.6

Air Temperature
35
219.0
73.6
47.5
48.6
46.7
47.5
237.0
76.5
48.0
49.2
47.0
48.0
256.0
79.5
48.7
50.0
47.5
48.6
275.0
82.5
49.5
50.9
48.1
49.3
296.0
85.6
50.3
51.8
48.7
50.0
317.0
88.6
51.2
52.8
49.4
50.7
340.0
91.7
52.2
53.9
50.1
51.5

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (kW)

62

Entering Condenser (C)
38
41
43
209.3
199.6
192.4
75.5
77.2
78.3
50.4
53.3
55.2
51.4
54.3
56.2
49.7
52.7
54.6
50.5
53.5
55.5
227.0
217.0
209.8
78.6
80.5
81.8
50.8
53.6
55.5
52.0
54.8
56.7
49.9
52.9
54.9
50.9
53.9
55.8
246.0
235.0
228.0
81.7
84.0
85.3
51.5
54.3
56.1
52.8
55.5
57.4
50.4
53.3
55.3
51.5
54.4
56.4
265.0
254.0
246.0
85.0
87.3
88.8
52.2
54.9
56.7
53.6
56.3
58.1
51.0
53.9
55.8
52.2
55.1
57.0
285.0
273.0
265.0
88.3
90.8
92.4
53.0
55.7
57.5
54.5
57.2
59.0
51.6
54.5
56.4
52.9
55.7
57.7
305.0
294.0
285.0
91.5
94.3
96.1
53.9
56.6
58.4
55.5
58.1
59.9
52.3
55.1
57.1
53.6
56.5
58.4
327.0
313.0
305.0
94.9
97.8
99.7
54.8
57.4
59.2
56.5
59.1
60.8
53.0
55.8
57.8
54.4
57.3
59.2

46
183.1
79.7
58.1
59.1
57.7
58.5
199.8
83.4
58.4
59.5
57.8
58.8
217.0
87.1
58.9
60.1
58.2
59.3
235.0
90.9
59.5
60.8
58.7
59.8
254.0
94.7
60.2
61.7
59.2
60.5
273.0
98.6
61.0
62.6
59.9
61.2
292.0
102.4
61.9
63.5
60.6
62.0

49
173.6
81.0
61.1
61.9
60.7
61.4
190.0
84.9
61.3
62.3
60.8
61.7
207.3
88.8
61.7
62.9
61.1
62.2
225.0
92.8
62.3
63.6
61.5
62.7
242.0
96.8
63.0
64.4
62.1
63.4
261.0
100.8
63.7
65.2
62.7
64.1
281.0
105.0
64.5
66.1
63.4
64.8

52
164.2
82.1
64.0
64.9
63.7
64.4
180.1
86.2
64.1
65.2
63.7
64.6
197.2
90.4
64.6
65.7
64.0
65.1
213.4
94.5
65.1
66.3
64.4
65.6
231.0
98.8
65.7
67.1*
64.9
66.2
250.0
103.0
66.4
67.9*
65.5
66.9
268.0
107.4
67.2
68.7*
66.2
67.6*

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT RATINGS — SI (cont)
38AH124
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT(A OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)
TCG
CMP
SDT(A) OR (B)
SCT(A) OR (B)

21
298.0
71.4
34.7
33.9
322.0
73.4
35.2
34.3
346.0
75.2
35.8
34.7
372.0
77.0
36.5
35.3
400.0
78.8
37.2
35.9
428.0
80.6
38.1
36.6
456.0
82.6
39.0
37.3

27
276.0
77.2
40.5
39.9
298.0
79.6
40.9
40.2
322.0
82.0
41.5
40.7
348.0
84.2
42.1
41.2
372.0
86.6
42.9
41.8
400.0
89.2
43.7
42.4
426.0
91.6
44.5
43.1

30
264.0
80.0
43.4
42.9
286.0
82.6
43.8
43.2
310.0
85.2
44.4
43.6
334.0
88.0
45.0
44.1
360.0
90.6
45.7
44.7
386.0
93.2
46.5
45.3
412.0
96.0
47.3
46.0

32
258.0
81.6
45.4
44.9
280.0
84.4
45.8
45.2
302.0
87.4
46.3
45.6
326.0
90.2
46.9
46.1
350.0
93.0
47.6
46.6
376.0
95.8
48.3
47.3
402.0
98.8
49.1
48.0

Air Temperature
35
246.0
84.0
48.3
47.9
268.0
87.2
48.7
48.1
290.0
90.2
49.2
48.5
314.0
93.2
49.7
49.0
338.0
96.4
50.4
49.5
362.0
99.6
51.1
50.2
388.0
102.6
51.9
50.8

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (kW)

Entering Condenser (C)
38
41
43
236.0
224.0
218.0
86.2
88.0
89.0
51.3
54.2
56.2
50.9
53.8
55.9
256.0
244.0
238.0
89.4
91.6
92.8
51.6
54.4
56.4
51.1
54.0
56.0
278.0
266.0
258.0
92.8
95.2
96.8
52.0
54.9
56.8
51.5
54.4
56.4
300.0
288.0
280.0
96.2
99.0
100.6
52.6
55.4
57.3
51.9
54.8
56.8
324.0
310.0
302.0
99.6
102.6
104.4
53.2
56.0
57.9
52.5
55.4
57.3
348.0
334.0
326.0
103.0
106.2
108.2
53.9
56.7
58.6
53.1
55.9
57.9
374.0
358.0
350.0
106.4
110.0
112.2
54.7
57.4
59.3
53.7
56.6
58.5

46
206.0
90.8
59.1
58.9
226.0
94.8
59.4
59.0
246.0
99.0
59.7
59.3
268.0
103.0
60.2
59.7
290.0
107.2
60.7
60.2
312.0
111.2
61.4
60.7
334.0
115.4
62.1
61.3

49
195.6
92.0
62.1
61.9
214.0
96.4
62.3
62.0
234.0
100.8
62.7
62.3
254.0
105.2
63.1
62.6
276.0
109.6
63.6
63.1
298.0
114.0
64.2
63.6
320.0
118.4
64.8
64.2

52
185.0
93.2
65.1
64.8
204.0
97.8
65.2
65.0
222.0
102.4
65.6
65.2
242.0
107.2
65.9
65.5
264.0
111.8
66.4
66.0
284.0
116.4
67.0
66.5
306.0
121.2
67.6
67.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

63

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — SI (cont)
38AH134
SST
(C)

−2

0

2

4

6

8

10

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

21
330.0
80.9
34.7
34.0
33.9
31.9
356.0
83.2
35.2
34.5
34.3
32.4
383.0
85.4
35.8
35.2
34.7
33.0
410.0
87.5
36.5
36.0
35.3
33.6
440.0
89.7
37.2
36.7
35.9
34.3
470.0
91.8
38.1
37.6
36.6
34.9
501.0
94.1
39.0
38.4
37.3
35.6

27
307.0
87.2
40.5
39.8
39.9
37.7
331.0
90.0
40.9
40.2
40.2
38.2
357.0
92.8
41.5
40.9
40.7
38.8
385.0
95.5
42.1
41.6
41.2
39.5
412.0
98.3
42.9
42.3
41.8
40.1
441.0
101.2
43.7
43.1
42.4
40.7
470.0
104.0
44.5
44.0
43.1
41.4

30
295.0
90.1
43.4
42.7
42.9
40.7
319.0
93.1
43.8
43.1
43.2
41.2
345.0
96.2
44.4
43.7
43.6
41.7
371.0
99.4
45.0
44.4
44.1
42.3
398.0
102.4
45.7
45.1
44.7
43.0
426.0
105.5
46.5
45.9
45.3
43.6
455.0
108.7
47.3
46.7
46.0
44.3

32
288.0
91.9
45.4
44.6
44.9
42.6
312.0
95.1
45.8
45.0
45.2
43.1
336.0
98.5
46.3
45.6
45.6
43.7
362.0
101.7
46.9
46.3
46.1
44.3
388.0
105.0
47.6
47.0
46.6
44.9
416.0
108.3
48.3
47.8
47.3
45.5
445.0
111.6
49.1
48.6
48.0
46.2

Air Temperature
35
276.0
94.5
48.3
47.5
47.9
45.5
300.0
98.0
48.7
47.8
48.1
46.0
324.0
101.5
49.2
48.4
48.5
46.5
349.0
105.1
49.7
49.1
49.0
47.1
375.0
108.7
50.4
49.8
49.5
47.7
402.0
112.3
51.1
50.5
50.2
48.4
430.0
115.9
51.9
51.3
50.8
49.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (C) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (C) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (kW)

64

Entering Condenser (C)
38
41
43
265.0
253.0
246.0
96.9
98.9
100.1
51.3
54.2
56.2
50.4
53.4
55.4
50.9
53.8
55.9
48.5
51.4
53.4
287.0
275.0
268.0
100.5
102.9
104.3
51.6
54.4
56.4
50.7
53.6
55.5
51.1
54.0
56.0
48.9
51.7
53.6
311.0
299.0
290.0
104.4
107.0
108.7
52.0
54.9
56.8
51.3
54.1
56.0
51.5
54.4
56.4
49.4
52.3
54.2
335.0
323.0
314.0
108.2
111.2
113.0
52.6
55.4
57.3
51.9
54.7
56.5
51.9
54.8
56.8
50.0
52.8
54.7
361.0
347.0
338.0
112.1
115.4
117.3
53.2
56.0
57.9
52.6
55.3
57.2
52.5
55.4
57.3
50.6
53.4
55.3
387.0
373.0
364.0
116.0
119.5
121.7
53.9
56.7
58.6
53.3
56.1
57.9
53.1
55.9
57.9
51.2
54.0
55.9
415.0
399.0
390.0
119.9
123.8
126.1
54.7
57.4
59.3
54.1
56.8
58.7
53.7
56.6
58.5
51.8
54.7
56.5

46
234.0
102.0
59.1
58.3
58.9
56.3
256.0
106.5
59.4
58.4
59.0
56.5
278.0
111.1
59.7
58.9
59.3
57.0
301.0
115.6
60.2
59.3
59.7
57.5
325.0
120.3
60.7
60.0
60.2
58.1
349.0
124.9
61.4
60.7
60.7
58.7
374.0
129.6
62.1
61.4
61.3
59.3

49
222.8
103.4
62.1
61.3
61.9
59.3
243.0
108.3
62.3
61.4
62.0
59.4
265.0
113.1
62.7
61.8
62.3
59.9
287.0
118.0
63.1
62.2
62.6
60.3
311.0
122.9
63.6
62.8
63.1
60.9
335.0
127.9
64.2
63.4
63.6
61.5
359.0
132.9
64.8
64.2
64.2
62.1

52
211.5
104.8
65.1
64.3
64.8
62.2
232.0
109.9
65.2
64.3
65.0
62.4
253.0
114.9
65.6
64.6
65.2
62.7
274.0
120.1
65.9
65.0
65.5
63.1
297.0
125.3
66.4
65.5
66.0
63.7
320.0
130.6
67.0
66.2
66.5
64.2
344.0
135.9
67.6*
66.9
67.0
64.8

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI
38AH044 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
SCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
52.7
12.0
32.8
56.9
12.3
33.4
61.4
12.5
34.0
66.0
12.8
34.7
70.8
13.1
35.5
75.8
13.4
36.3
80.9
13.7
37.1

27
48.5
13.0
38.5
52.6
13.4
39.0
56.9
13.8
39.6
61.4
14.2
40.3
66.0
14.5
41.0
70.8
14.9
41.8
75.7
15.3
42.6

30
46.4
13.5
41.3
50.4
14.0
41.8
54.6
14.4
42.4
59.0
14.8
43.0
63.5
15.2
43.8
68.3
15.6
44.5
73.1
16.0
45.3

32
44.9
13.8
43.2
48.9
14.3
43.7
53.1
14.8
44.3
57.4
15.2
44.9
61.9
15.7
45.6
66.5
16.1
46.4
71.3
16.5
47.1

Air Temperature
35
42.7
14.3
46.1
46.7
14.8
46.5
50.8
15.3
47.1
55.0
15.8
47.7
59.4
16.3
48.4
63.9
16.8
49.1
68.6
17.3
49.9

Entering Condenser (C)
38
41
43
40.5
38.3
36.8
14.6
15.0
15.1
49.0
51.9
53.8
44.4
42.1
40.5
15.2
15.6
15.8
49.4
52.2
54.2
48.4
46.1
44.5
15.8
16.2
16.5
49.9
52.7
54.6
52.6
50.1
48.5
16.3
16.8
17.1
50.5
53.3
55.1
56.9
54.3
52.6
16.9
17.4
17.8
51.1
53.9
55.8
61.3
58.7
56.9
17.4
18.0
18.4
51.8
54.6
56.4
65.9
63.1
61.3
18.0
18.6
19.0
52.6
55.3
57.1

21
53.0
12.4
35.0
57.6
12.6
35.1
62.5
12.8
35.3
67.5
13.0
35.6
72.6
13.3
36.0
77.9
13.5
36.6
83.2
13.7
37.3

27
48.7
13.5
41.0
53.1
13.8
41.0
57.8
14.1
41.2
62.7
14.4
41.4
67.7
14.7
41.8
72.8
15.0
42.3
78.0
15.3
42.8

30
46.4
13.9
44.0
50.8
14.4
44.1
55.4
14.7
44.2
60.2
15.1
44.3
65.1
15.4
44.7
70.2
15.8
45.1
75.3
16.1
45.6

32
44.9
14.2
46.0
49.2
14.7
46.0
53.8
15.1
46.1
58.5
15.5
46.3
63.4
15.9
46.6
68.4
16.3
47.0
73.5
16.6
47.5

Air Temperature
35
42.7
14.6
49.0
46.8
15.2
49.0
51.4
15.6
49.1
56.0
16.1
49.2
60.8
16.5
49.5
65.7
17.0
49.9
70.8
17.4
50.3

Entering Condenser (C)
38
41
43
40.4
38.1
36.5
15.0
15.2
15.4
52.0
55.0
57.0
44.5
42.1
40.5
15.6
15.9
16.1
52.0
55.0
57.0
48.9
46.4
44.8
16.1
16.5
16.8
52.1
55.1
57.1
53.5
50.9
49.1
16.6
17.1
17.4
52.2
55.1
57.1
58.2
55.5
53.7
17.1
17.7
18.0
52.4
55.3
57.3
63.0
60.3
58.4
17.6
18.2
18.6
52.7
55.6
57.6
68.0
65.1
63.2
18.1
18.8
19.2
53.2
56.0
57.9

46
34.5
15.4
56.7
38.2
16.1
57.0
42.1
16.8
57.5
46.0
17.6
57.9
50.1
18.3
58.5
54.3
18.9
59.2
58.5
19.6
59.9

49
32.2
15.6
59.7
35.8
16.4
59.9
39.6
17.1
60.3
43.5
17.9
60.8
47.5
18.7
61.3
51.6
19.4
61.9
55.8
20.2
62.6

52
29.9
15.6
62.6
33.5
16.5
62.7
37.2
17.4
63.1
41.0
18.2
63.6
44.9
19.1
64.1
48.9*
19.9*
64.7*
53.0*
20.7*
65.3*

49
31.9
15.6
63.0
35.6
16.5
63.0
39.7
17.4
63.0
43.9
18.2
63.1
48.3
18.9
63.2
52.8
19.7
63.4
57.5*
20.4*
63.7*

52
29.5*
15.6*
66.0*
33.2*
16.6*
66.0*
37.2*
17.6*
66.0*
41.2*
18.4*
66.1*
45.5*
19.3*
66.2*
50.0*
20.1*
66.3*
54.5*
20.9*
66.5*

49
45.8
21.9
62.2
50.1
22.9
62.5
54.8
23.9
62.8
59.6
24.9
63.2
64.6
25.9
63.8
69.8
27.0
64.4
75.1
28.0
65.1

52
43.3
22.2
65.1
47.5
23.3
65.3
52.1
24.3
65.7
56.7
25.4
66.1
61.5*
26.5*
66.6*
66.6*
27.6*
67.2*
71.7*
28.7*
67.9*

38AH054 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TDG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

46
34.2
15.6
60.0
38.0
16.4
60.0
42.2
17.1
60.0
46.5
17.8
60.1
51.0
18.5
60.2
55.7
19.2
60.5
60.4
19.8
60.8

38AH064 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
70.7
16.7
34.9
76.4
17.2
35.4
82.5
17.7
36.1
88.8
18.1
36.8
95.4
18.6
37.7
102.0
19.1
38.6
109.0
19.6
39.5

27
65.0
18.1
40.7
70.5
18.7
41.1
76.3
19.3
41.7
82.3
19.9
42.4
88.5
20.5
43.2
94.9
21.1
44.1
102.0
21.7
44.9

30
62.3
18.8
43.6
67.5
19.4
44.0
73.2
20.1
44.6
79.0
20.7
45.2
85.1
21.4
46.0
91.4
22.0
46.8
97.8
22.7
47.7

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

32
60.4
19.2
45.5
65.7
19.9
45.9
71.2
20.5
46.5
76.9
21.2
47.1
82.8
21.9
47.8
89.0
22.6
48.6
95.3
23.4
49.5

Air Temperature Entering Condenser (C)
35
38
41
57.7
55.1
52.5
19.8
20.3
20.8
48.4
51.4
54.3
62.8
60.0
57.3
20.5
21.1
21.6
48.8
51.7
54.6
68.2
65.3
62.4
21.2
21.9
22.5
49.3
52.2
55.1
73.8
70.7
67.6
22.0
22.7
23.3
49.9
52.8
55.6
79.5
76.2
73.0
22.8
23.5
24.2
50.6
53.4
56.2
85.5
82.1
78.7
23.5
24.3
25.1
51.4
54.2
57.0
91.7
88.0
84.5
24.3
25.2
26.0
52.2
55.0
57.7

43
50.8
21.1
56.3
55.5
21.9
56.5
60.5
22.8
57.0
65.6
23.7
57.5
70.9
24.7
58.1
76.5
25.6
58.8
82.1
26.5
59.6

46
48.2
21.5
59.2
52.8
22.4
59.4
57.6
23.4
59.9
62.6
24.4
60.3
67.7
25.3
60.9
73.1
26.3
61.6
78.6
27.3
62.3

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

65

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH044 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
52.8
12.2
33.8
57.3
12.4
34.0
62.2
12.6
34.3
67.1
12.8
34.7
72.3
13.0
35.1
77.7
13.2
35.5
83.2
13.3
36.0

27
48.4
13.3
39.8
52.8
13.6
40.0
57.4
13.9
40.2
62.2
14.2
40.6
67.1
14.5
41.0
72.3
14.8
41.4
77.6
15.1
41.9

21
70.0
17.1
36.4
75.7
17.6
36.9
81.7
18.1
37.6
87.9
18.6
38.4
94.4
19.2
39.2
101.0
19.7
40.2
108.0
20.2
41.1

27
64.5
18.5
42.1
69.9
19.1
42.6
75.6
19.7
43.2
81.5
20.3
43.9
87.6
21.0
44.7
94.0
21.6
45.6
101.0
22.3
46.5

30
46.2
13.8
42.8
50.4
14.2
42.9
55.0
14.5
43.2
59.7
14.9
43.5
64.5
15.3
43.9
69.6
15.6
44.4
74.8
15.9
44.8

32
44.7
14.1
44.8
48.9
14.5
44.9
53.4
14.9
45.2
58.0
15.3
45.5
62.8
15.7
45.8
67.8
16.1
46.3
72.9
16.4
46.8

Air Temperature
35
42.4
14.5
47.7
46.5
15.0
47.9
50.9
15.5
48.2
55.4
15.9
48.4
60.1
16.4
48.8
65.0
16.8
49.2
70.0
17.2
49.7

Entering Condenser (C)
38
41
43
40.1
37.8
36.3
14.8
15.1
15.3
50.7
53.7
55.7
44.2
41.8
40.2
15.4
15.8
16.0
50.9
53.8
55.8
48.5
46.0
44.3
16.0
16.4
16.6
51.1
54.0
56.0
52.9
50.3
48.6
16.5
17.0
17.3
51.4
54.3
56.3
57.5
54.8
53.0
17.0
17.6
17.9
51.7
54.6
56.6
62.3
59.5
57.6
17.5
18.1
18.5
52.1
55.0
57.0
67.1
64.2
62.3
18.0
18.6
19.1
52.6
55.5
57.4

46
33.9
15.5
58.7
37.7
16.3
58.8
41.8
17.0
59.0
46.0
17.7
59.2
50.3
18.4
59.5
54.8
19.1
59.9
59.4
19.7
60.3

49
31.6
15.6
61.6
35.3
16.5
61.8
39.3
17.3
61.9
43.3
18.1
62.2
47.6
18.8
62.5
51.9
19.6
62.8
56.4
20.3
63.2

52
29.3
15.7
64.6
32.9
16.6
64.7
36.7
17.5
64.9
40.7
18.4
65.1
44.8
19.2
65.4
49.1*
20.0*
65.8*
53.5*
20.8*
66.1*

Air Temperature Entering Condenser (C)
35
38
41
43
57.3
54.7
52.1
50.5
20.0
20.5
21.0
21.3
49.9
52.8
55.7
57.7
62.3
59.5
56.8
55.1
20.8
21.4
21.9
22.2
50.2
53.1
56.0
58.0
67.6
64.7
61.9
60.0
21.6
22.2
22.8
23.1
50.8
53.7
56.5
58.5
73.1
70.0
67.0
65.0
22.4
23.0
23.7
24.1
51.4
54.3
57.1
59.0
78.8
75.6
72.4
70.3
23.2
23.9
24.6
25.0
52.1
54.9
57.7
59.6
84.8
81.4
78.0
75.8
24.0
24.8
25.5
26.0
52.9
55.7
58.4
60.3
90.8
87.2
83.7
81.4
24.8
25.6
26.4
26.9
53.7
56.4
59.2
61.0

46
48.0
21.7
60.6
52.4
22.7
60.9
57.2
23.6
61.3
62.0
24.6
61.8
67.1
25.7
62.4
72.5
26.7
63.1
77.9
27.7
63.8

49
45.5
22.0
63.6
49.8
23.1
63.9
54.4
24.1
64.2
59.1
25.2
64.7
64.0
26.2
65.2
69.2
27.3
65.9
74.5*
28.4*
66.6*

52
43.1*
22.4*
66.5*
47.2*
23.5*
66.8*
51.6*
24.6*
67.2*
56.2
25.7*
67.6*
61.0*
26.8*
68.1
66.0*
27.9*
68.7*
71.0*
29.1*
69.4*

49
51.2
24.1
62.0
56.3
25.3
62.2
61.6
26.5
62.5
67.1
27.7
62.9
72.7
28.8
63.3
78.6
30.0
63.9
84.5
31.1
64.5

52
48.3
24.3
65.0
53.2
25.6
65.1
58.4
26.9
65.4
63.8
28.1
65.8
69.3*
29.4*
66.2*
75.0*
30.6*
66.7*
80.8*
31.8*
67.3*

38AH054 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

30
61.7
19.1
45.0
67.0
19.8
45.5
72.6
20.4
46.1
78.3
21.1
46.7
84.3
21.8
47.5
90.5
22.5
48.3
96.9
23.2
49.2

32
60.0
19.5
47.0
65.1
20.2
47.4
70.6
20.9
48.0
76.2
21.6
48.6
82.1
22.4
49.3
88.2
23.1
50.1
94.5
23.9
51.0

38AH064 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

66

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
77.8
19.0
34.5
83.9
19.4
34.8
90.4
19.8
35.3
97.0
20.3
35.9
104.0
20.7
36.6
111.0
21.1
37.4
118.0
21.5
38.2

27
72.2
20.5
40.3
78.1
21.1
40.7
84.4
21.7
41.2
90.8
22.3
41.7
97.4
22.9
42.4
104.0
23.4
43.1
111.0
24.0
43.9

30
69.4
21.2
43.3
75.2
21.9
43.6
81.4
22.5
44.0
87.6
23.2
44.6
94.1
23.9
45.2
101.0
24.5
45.9
108.0
25.2
46.7

Air Temperature Entering Condenser (C)
32
35
38
41
67.5
64.7
61.8
58.9
21.6
22.2
22.8
23.2
45.3
48.2
51.2
54.1
73.2
70.3
67.3
64.3
22.4
23.0
23.7
24.2
45.5
48.4
51.4
54.3
79.3
76.2
73.1
70.0
23.1
23.8
24.5
25.1
46.0
48.9
51.8
54.7
85.5
82.3
79.1
75.8
23.8
24.6
25.4
26.1
46.5
49.4
52.3
55.2
91.9
88.6
85.2
81.8
24.5
25.4
26.2
27.0
47.1
50.0
52.9
55.7
98.5
95.1
91.6
88.0
25.2
26.2
27.1
28.0
47.8
50.7
53.5
56.3
105.0
102.0
98.0
94.4
25.9
27.0
28.0
28.9
48.6
51.4
54.2
57.0

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

43
57.0
23.5
56.1
62.3
24.5
56.3
67.9
25.5
56.7
73.6
26.5
57.1
79.6
27.5
57.6
85.7
28.5
58.2
91.9
29.5
58.9

46
54.1
23.9
59.1
59.3
25.0
59.2
64.8
26.1
59.6
70.4
27.1
60.0
76.1
28.2
60.4
82.1
29.3
61.1
88.2
30.3
61.7

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH074 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
78.6
18.8
33.9
84.7
19.3
34.4
91.1
19.7
35.0
97.6
20.2
35.7
104.0
20.6
36.4
112.0
21.0
37.2
119.0
21.4
38.0

27
73.2
20.4
39.7
79.1
20.9
40.1
85.3
21.5
40.7
91.5
22.1
41.3
98.1
22.7
42.0
105.0
23.3
42.7
112.0
23.9
43.5

30
70.5
21.1
42.7
76.3
21.7
43.0
82.3
22.4
43.5
88.5
23.0
44.1
94.9
23.7
44.8
102.0
24.4
45.5
108.0
25.0
46.3

Air Temperature Entering Condenser (C)
32
35
38
41
68.6
65.8
63.0
60.1
21.5
22.1
22.7
23.1
44.6
47.6
50.5
53.5
74.4
71.5
68.6
65.6
22.2
22.9
23.5
24.1
44.8
47.7
50.7
53.6
80.3
77.4
74.3
71.3
22.9
23.7
24.4
25.0
45.4
48.2
51.1
53.9
86.4
83.4
80.2
77.1
23.6
24.4
25.2
25.9
46.0
48.8
51.6
54.4
92.8
89.6
86.3
83.1
24.3
25.2
26.1
26.8
46.6
49.4
52.2
55.0
99.4
96.0
92.6
89.2
25.0
26.0
26.9
27.8
47.4
50.2
52.9
55.7
106.0
103.0
99.1
95.5
25.7
26.8
27.8
28.7
48.1
50.9
53.6
56.4

43
58.2
23.4
55.5
63.6
24.4
55.5
69.3
25.4
55.9
75.0
26.3
56.3
80.9
27.3
56.9
87.0
28.3
57.5
93.1
29.3
58.2

46
55.3
23.8
58.5
60.6
24.9
58.5
66.2
25.9
58.7
71.8
27.0
59.1
77.6
28.0
59.6
83.5
29.1
60.3
89.6
30.1
61.0

49
52.4
24.1
61.4
57.6
25.3
61.4
63.1
26.4
61.6
68.6
27.5
61.9
74.3
28.6
62.4
80.1
29.8
63.0
86.0
30.9
63.7

52
49.5
24.3
64.4
54.5
25.6
64.4
59.9
26.8
64.6
65.4
28.0
64.8
70.9
29.2
65.3
76.6*
30.4*
65.8*
82.4*
31.6*
66.4*

49
71.0
33.9
64.7
77.2
35.5
64.7
84.0
37.0
64.8
91.0
38.6
65.0
98.3
40.1
65.2
106.0
41.7
65.6
114.0*
43.3*
66.0*

52
67.8*
34.4*
67.7*
73.8*
36.0*
67.7*
80.4*
37.6*
67.8*
87.2*
39.2*
67.9*
94.3*
40.9*
68.2*
102.0*
42.5*
68.5*
109.0*
44.2*
68.9*

38AH084 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
102.0
27.2
36.7
110.0
28.0
36.8
119.0
28.7
37.1
128.0
29.4
37.5
137.0
30.2
38.0
147.0
31.0
38.7
157.0
31.8
39.5

27
95.0
29.1
42.7
103.0
30.0
42.8
111.0
30.9
43.0
120.0
31.8
43.3
129.0
32.7
43.8
138.0
33.7
44.4
147.0
34.7
45.1

30
91.7
29.9
45.7
99.2
30.9
45.8
107.0
31.9
46.0
116.0
32.9
46.2
125.0
33.9
46.7
134.0
35.0
47.3
143.0
36.0
47.9

32
89.4
30.4
47.7
96.8
31.5
47.8
105.0
32.6
48.0
113.0
33.6
48.2
122.0
34.7
48.6
131.0
35.8
49.2
140.0
36.9
49.8

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

Air Temperature
35
86.1
31.2
50.7
93.3
32.3
50.8
101.0
33.5
50.9
109.0
34.6
51.2
118.0
35.8
51.5
126.0
37.0
52.0
135.0
38.2
52.6

Entering Condenser (C)
38
41
43
82.8
79.5
77.4
31.8
32.5
32.9
53.6
56.7
58.7
89.8
86.3
84.0
33.1
33.8
34.2
53.7
56.7
58.7
97.4
93.7
91.3
34.3
35.1
35.6
53.9
56.9
58.9
105.0
101.0
98.7
35.6
36.5
37.0
54.1
57.1
59.1
113.0
109.0
107.0
36.8
37.8
38.4
54.5
57.4
59.4
122.0
118.0
115.0
38.1
39.1
39.8
54.9
57.8
59.8
130.0
126.0
123.0
39.4
40.5
41.2
55.5
58.3
60.3

46
74.2
33.4
61.7
80.6
34.9
61.7
87.6
36.3
61.9
94.8
37.8
62.0
102.0
39.3
62.3
110.0
40.8
62.7
118.0
42.3
63.1

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

67

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH074 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

21
103.0
26.4
34.2
110.0
27.2
34.8
118.0
28.1
35.6
127.0
28.9
36.3
135.0
29.8
37.1
145.0
30.6
38.0
154.0
31.4
38.9

27
96.0
28.3
39.9
103.0
29.3
40.5
111.0
30.3
41.2
119.0
31.3
41.9
127.0
32.3
42.7
136.0
33.3
43.6
145.0
34.4
44.4

30
92.7
29.1
42.8
99.8
30.2
43.3
107.0
31.3
44.0
115.0
32.4
44.7
123.0
33.5
45.5
132.0
34.6
46.3
140.0
35.7
47.2

32
90.5
29.6
44.7
97.5
30.8
45.2
105.0
31.9
45.9
113.0
33.1
46.6
120.0
34.2
47.4
129.0
35.4
48.2
137.0
36.6
49.0

Air Temperature
35
87.3
30.4
47.6
94.1
31.6
48.0
101.0
32.8
48.7
109.0
34.0
49.4
116.0
35.3
50.2
125.0
36.6
51.0
133.0
37.8
51.8

Entering Condenser (C)
38
41
43
84.1
80.9
78.8
31.1
31.8
32.2
50.5
53.4
55.3
90.7
87.4
85.2
32.4
33.1
33.5
50.9
53.7
55.7
97.8
94.2
91.9
33.7
34.5
35.0
51.5
54.3
56.2
105.0
101.0
98.8
35.0
35.8
36.4
52.2
55.0
56.9
112.0
109.0
106.0
36.3
37.2
37.8
52.9
55.7
57.6
120.0
116.0
113.0
37.6
38.7
39.3
53.7
56.5
58.3
128.0
124.0
121.0
39.0
40.1
40.8
54.5
57.3
59.1

46
75.7
32.8
58.2
81.9
34.2
58.5
88.4
35.7
59.1
95.1
37.2
59.7
102.0
38.7
60.4
109.0
40.3
61.1
117.0
41.8
61.9

49
72.6
33.3
61.2
78.6
34.8
61.4
85.0
36.4
61.9
91.5
37.9
62.5
98.2
39.5
63.1
105.0
41.2
63.9
112.0
42.8
64.6

52
69.4
33.8
64.1
75.3
35.4
64.3
81.5
37.0
64.8
87.8
38.6
65.3
94.4
40.3
65.9
101.0*
42.0*
66.6*
108.0*
43.7*
67.4*

21
102.0
26.9
35.7
111.0
27.6
35.8
119.0
28.3
36.2
128.0
29.1
36.7
137.0
29.8
37.3
147.0
30.6
38.1
157.0
31.4
38.9

27
95.6
28.8
41.6
103.0
29.7
41.8
112.0
30.6
42.1
120.0
31.5
42.5
129.0
32.4
43.0
138.0
33.4
43.7
147.0
34.4
44.5

30
92.2
29.6
44.6
99.7
30.6
44.7
108.0
31.6
45.0
116.0
32.6
45.4
125.0
33.6
45.9
134.0
34.7
46.5
143.0
35.7
47.3

32
89.9
30.2
46.6
97.4
31.2
46.7
105.0
32.3
47.0
113.0
33.3
47.3
122.0
34.4
47.8
131.0
35.5
48.4
140.0
36.6
49.1

Air Temperature
35
86.6
30.9
49.6
93.8
32.1
49.7
102.0
33.2
49.9
110.0
34.3
50.2
118.0
35.5
50.7
126.0
36.7
51.3
135.0
37.9
51.9

Entering Condenser (C)
38
41
43
83.3
80.1
77.9
31.6
32.3
32.6
52.6
55.6
57.6
90.3
86.9
84.6
32.8
33.5
34.0
52.7
55.6
57.6
97.9
94.2
91.8
34.0
34.8
35.3
52.9
55.8
57.8
106.0
102.0
99.2
35.3
36.2
36.7
53.1
56.1
58.1
114.0
110.0
107.0
36.5
37.5
38.1
53.6
56.5
58.4
122.0
118.0
115.0
37.8
38.9
39.5
54.1
57.0
58.9
131.0
126.0
123.0
39.1
40.2
40.9
54.8
57.6
59.5

46
74.7
33.2
60.6
81.1
34.7
60.6
88.1
36.1
60.8
95.3
37.5
61.0
103.0
39.0
61.4
111.0
40.5
61.8
118.0
42.0
62.3

49
71.5
33.8
63.6
77.7
35.3
63.6
84.5
36.8
63.7
91.5
38.3
63.9
98.7
39.8
64.3
106.0
41.4
64.7
114.0
43.0
65.2

52
68.4*
34.2*
66.6*
74.4*
35.8*
66.6*
80.8*
37.4*
66.7*
87.7*
39.0*
66.9*
94.7*
40.6*
67.2*
102.0*
42.3*
67.6*
110.0*
43.9*
68.1*

38AH084 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

CMP
SDT
SST
TCG

68

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH094 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

21
130.0
31.8
35.5
33.6
140.0
32.7
36.2
34.0
150.0
33.7
37.1
34.6
161.0
34.7
38.0
35.2
172.0
35.7
39.0
35.8
183.0
36.7
40.1
36.5
195.0
37.7
41.1
37.2

27
120.0
34.2
41.2
39.7
130.0
35.3
41.8
40.1
140.0
36.5
42.6
40.6
150.0
37.7
43.5
41.2
161.0
38.9
44.4
41.9
172.0
40.1
45.4
42.6
183.0
41.3
46.4
43.3

30
116.0
35.3
44.0
42.8
125.0
36.6
44.5
43.1
135.0
37.9
45.3
43.7
145.0
39.2
46.2
44.3
155.0
40.5
47.1
44.9
166.0
41.8
48.0
45.6
177.0
43.1
49.1
46.4

32
112.0
36.0
45.9
44.8
122.0
37.3
46.4
45.1
131.0
38.7
47.2
45.7
141.0
40.1
48.0
46.3
152.0
41.5
48.9
46.9
162.0
42.9
49.8
47.6
173.0
44.3
50.8
48.4

Air Temperature
35
108.0
37.0
48.8
47.8
117.0
38.4
49.2
48.1
126.0
39.9
49.9
48.6
136.0
41.4
50.7
49.2
146.0
42.9
51.6
49.9
156.0
44.4
52.5
50.6
167.0
45.9
53.5
51.3

Entering Condenser (C)
38
41
43
103.0
97.6
94.2
37.8
38.5
38.9
51.6
54.5
56.5
50.8
53.9
55.9
112.0
107.0
103.0
39.4
40.2
40.7
52.0
54.9
56.8
51.1
54.1
56.0
121.0
116.0
112.0
40.9
41.9
42.5
52.7
55.5
57.4
51.6
54.5
56.5
131.0
125.0
122.0
42.5
43.6
44.3
53.4
56.2
58.0
52.1
55.0
57.0
140.0
135.0
131.0
44.2
45.4
46.1
54.3
57.0
58.8
52.8
55.7
57.6
151.0
145.0
141.0
45.8
47.1
47.9
55.2
57.9
59.6
53.5
56.4
58.3
161.0
155.0
151.0
47.4
48.9
49.8
56.2
58.8
60.5
54.2
57.1
59.0

21
124.0
28.9
34.4
32.6
134.0
29.8
35.1
33.1
144.0
30.7
36.0
33.6
154.0
31.5
36.9
34.2
165.0
32.4
37.9
34.8
176.0
33.3
38.9
35.5
188.0
34.3
39.9
36.2

27
115.0
31.2
40.0
38.6
124.0
32.3
40.6
39.1
134.0
33.4
41.4
39.6
144.0
34.4
42.3
40.2
154.0
35.5
43.2
40.8
165.0
36.6
44.1
41.5
176.0
37.7
45.2
42.2

30
110.0
32.4
42.8
41.7
119.0
33.5
43.4
42.1
128.0
34.7
44.1
42.6
138.0
35.9
44.9
43.2
148.0
37.1
45.8
43.8
159.0
38.3
46.8
44.5
170.0
39.5
47.8
45.2

32
107.0
33.1
44.7
43.7
116.0
34.3
45.2
44.0
125.0
35.5
46.0
44.6
135.0
36.7
46.7
45.1
145.0
38.0
47.6
45.8
155.0
39.3
48.6
46.5
166.0
40.6
49.5
47.2

Air Temperature
35
102.0
34.0
47.5
46.7
111.0
35.3
48.0
47.0
120.0
36.7
48.7
47.5
129.0
38.0
49.5
48.1
139.0
39.4
50.3
48.7
149.0
40.7
51.2
49.4
160.0
42.1
52.2
50.1

Entering Condenser (C)
38
41
43
97.3
92.6
89.4
34.9
35.7
36.2
50.4
53.3
55.2
49.7
52.7
54.6
106.0
101.0
97.8
36.3
37.2
37.8
50.8
53.6
55.5
49.9
52.9
54.9
115.0
110.0
106.0
37.7
38.8
39.4
51.5
54.3
56.1
50.4
53.3
55.3
124.0
119.0
115.0
39.2
40.3
41.0
52.2
54.9
56.7
51.0
53.9
55.8
134.0
128.0
124.0
40.7
41.9
42.6
53.0
55.7
57.5
51.6
54.5
56.4
143.0
138.0
134.0
42.1
43.4
44.3
53.9
56.6
58.4
52.3
55.1
57.1
154.0
147.0
143.0
43.6
45.0
45.9
54.8
57.4
59.2
53.0
55.8
57.8

46
89.1
39.4
59.4
58.9
97.9
41.4
59.6
59.0
107.0
43.3
60.2
59.4
116.0
45.2
60.8
59.9
125.0
47.1
61.5
60.5
135.0
49.1
62.3
61.1
145.0
51.0
63.2
61.8

49
84.0
39.8
62.3
61.9
92.6
41.9
62.5
62.0
101.0
43.9
63.0
62.3
110.0
46.0
63.5
62.7
120.0
48.1
64.2
63.3
129.0
50.1
65.0
64.0
139.0
52.2
65.9
64.7

52
78.8
40.0
65.3
64.9
87.3
42.3
65.4
64.9
96.0
44.5
65.8
65.3
105.0
46.7
66.3
65.6
114.0
48.9
66.9
66.2
123.0
51.1
67.7
66.8
132.0
53.3
68.5*
67.5

38AH104 CIRCUIT A
SST
(C)
−2

0

2

4

6

8

10

CMP
SCT
SDT
SST
TCG

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (C)
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

46
84.7
36.8
58.1
57.7
92.8
38.5
58.4
57.8
101.0
40.2
58.9
58.2
110.0
42.0
59.5
58.7
119.0
43.7
60.2
59.2
128.0
45.5
61.0
59.9
137.0
47.2
61.9
60.6

49
80.0
37.3
61.1
60.7
88.0
39.2
61.3
60.8
96.3
41.0
61.7
61.1
105.0
42.8
62.3
61.5
113.0
44.7
63.0
62.1
122.0
46.5
63.7
62.7
132.0
48.4
64.5
63.4

52
75.3
37.7
64.0
63.7
83.1
39.7
64.1
63.7
91.2
41.7
64.6
64.0
99.4
43.6
65.1
64.4
108.0
45.6
65.7
64.9
117.0
47.5
66.4
65.5
126.0
49.5
67.2
66.2

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

69

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH094 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

21
103.0
26.3
33.8
32.3
111.0
27.0
34.2
32.4
119.0
27.8
34.9
32.8
128.0
28.6
35.6
33.3
137.0
29.4
36.4
33.8
146.0
30.2
37.3
34.3
155.0
31.0
38.2
34.9

27
96.5
28.1
39.6
38.5
104.0
29.0
39.9
38.6
112.0
30.0
40.5
39.0
120.0
30.9
41.2
39.4
129.0
31.9
41.9
39.9
137.0
32.9
42.7
40.4
146.0
33.9
43.6
41.0

30
93.1
29.0
42.5
41.5
101.0
30.0
42.8
41.7
108.0
31.0
43.4
42.0
116.0
32.1
44.0
42.4
124.0
33.1
44.7
42.9
133.0
34.2
45.5
43.5
142.0
35.3
46.3
44.1

32
90.9
29.6
44.5
43.6
98.2
30.6
44.8
43.7
106.0
31.7
45.3
44.0
114.0
32.8
45.9
44.4
122.0
33.9
46.5
44.9
130.0
35.0
47.3
45.5
139.0
36.2
48.2
46.1

Air Temperature
35
87.6
30.4
47.4
46.7
94.7
31.5
47.7
46.8
102.0
32.6
48.2
47.1
110.0
33.8
48.7
47.4
118.0
35.0
49.3
47.9
126.0
36.2
50.1
48.4
134.0
37.4
50.9
49.0

Entering Condenser (C)
38
41
43
84.3
81.1
78.9
31.1
31.8
32.2
50.4
53.4
55.4
49.7
52.8
54.8
91.3
87.8
85.5
32.3
33.1
33.5
50.6
53.5
55.5
49.8
52.8
54.8
98.6
95.0
92.6
33.5
34.3
34.9
51.0
53.9
55.9
50.1
53.1
55.1
106.0
102.0
99.7
34.7
35.7
36.2
51.5
54.4
56.3
50.4
53.4
55.4
114.0
110.0
107.0
36.0
37.0
37.6
52.1
55.0
56.9
50.9
53.8
55.8
122.0
118.0
115.0
37.3
38.4
39.1
52.9
55.7
57.5
51.4
54.4
56.3
130.0
126.0
123.0
38.6
39.8
40.5
53.7
56.4
58.3
52.0
54.9
56.9

21
141.0
33.9
35.7
33.5
151.0
35.1
36.5
34.0
163.0
36.2
37.5
34.7
174.0
37.4
38.5
35.3
186.0
38.6
39.6
36.0
199.0
39.8
40.7
36.7
212.0
41.1
41.9
37.5

27
130.0
36.5
41.2
39.5
140.0
37.8
41.9
40.0
151.0
39.2
42.9
40.7
162.0
40.6
43.8
41.4
174.0
42.0
44.8
42.1
186.0
43.4
45.9
42.8
198.0
44.9
47.0
43.6

30
125.0
37.7
43.9
42.6
135.0
39.1
44.7
43.1
145.0
40.6
45.5
43.7
156.0
42.1
46.4
44.4
168.0
43.6
47.4
45.1
179.0
45.2
48.5
45.8
191.0
46.8
49.5
46.6

32
122.0
38.5
45.8
44.5
131.0
40.0
46.5
45.0
142.0
41.5
47.3
45.7
152.0
43.1
48.2
46.3
163.0
44.7
49.2
47.1
175.0
46.3
50.2
47.8
187.0
47.9
51.3
48.6

Air Temperature
35
117.0
39.6
48.6
47.5
126.0
41.2
49.2
48.0
136.0
42.8
50.0
48.6
146.0
44.5
50.9
49.3
157.0
46.2
51.8
50.0
168.0
47.9
52.8
50.7
180.0
49.6
53.9
51.5

Entering Condenser (C)
38
41
43
112.0
107.0
103.0
40.6
41.5
42.1
51.4
54.3
56.2
50.5
53.5
55.5
121.0
116.0
112.0
42.3
43.3
44.0
52.0
54.8
56.7
50.9
53.9
55.8
131.0
125.0
122.0
44.0
45.2
45.9
52.8
55.5
57.4
51.5
54.4
56.4
141.0
135.0
131.0
45.8
47.0
47.8
53.6
56.3
58.1
52.2
55.1
57.0
151.0
145.0
141.0
47.6
48.9
49.8
54.5
57.2
59.0
52.9
55.7
57.7
162.0
156.0
151.0
49.4
50.9
51.8
55.5
58.1
59.9
53.6
56.5
58.4
173.0
166.0
162.0
51.3
52.8
53.8
56.5
59.1
60.8
54.4
57.3
59.2

46
75.7
32.8
58.3
57.9
82.1
34.2
58.4
57.9
89.0
35.6
58.8
58.1
95.9
37.1
59.2
58.4
103.0
38.5
59.7
58.8
111.0
40.0
60.3
59.3
118.0
41.5
61.0
59.8

49
72.5
33.4
61.3
60.9
78.8
34.8
61.4
60.9
85.4
36.3
61.7
61.1
92.2
37.8
62.1
61.3
99.2
39.4
62.5
61.7
106.0
40.9
63.1
62.2
114.0
42.5
63.8
62.7

52
69.4
33.9
64.3
63.9
75.4
35.4
64.4
63.9
81.9
37.0
64.6
64.1
88.4
38.5
65.0
64.3
95.3
40.2
65.4
64.7
102.0
41.8
66.0
65.1
110.0
43.5
66.6
65.6

38AH104 CIRCUIT B
SST
(C)
−2

0

2

4

6

8

10

CMP
SCT
SDT
SST
TCG

70

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (C)
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

46
98.4
42.9
59.1
58.5
107.0
44.9
59.5
58.8
116.0
46.9
60.1
59.3
125.0
48.9
60.8
59.8
135.0
51.0
61.7
60.5
145.0
53.1
62.6
61.2
155.0
55.2
63.5
62.0

49
93.6
43.7
61.9
61.4
102.0
45.7
62.3
61.7
111.0
47.8
62.9
62.2
120.0
50.0
63.6
62.7
129.0
52.1
64.4
63.4
139.0
54.3
65.2
64.1
149.0
56.6
66.1
64.8

52
88.9
44.4
64.9
64.4
97.0
46.5
65.2
64.6
106.0
48.7
65.7
65.1
114.0
50.9
66.3
65.6
123.0
53.2
67.1
66.2
133.0
55.5
67.9
66.9
142.0
57.9
68.7*
67.6

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — SI (cont)
38AH124 MODULE 124A OR 124B; 38AH134 MODULE 134A
SST
(C)
−2

0

2

4

6

8

10

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

21
149.0
35.7
34.7
33.9
161.0
36.7
35.2
34.3
173.0
37.6
35.8
34.7
186.0
38.5
36.5
35.3
200.0
39.4
37.2
35.9
214.0
40.3
38.1
36.6
228.0
41.3
39.0
37.3

27
138.0
38.6
40.5
39.9
149.0
39.8
40.9
40.2
161.0
41.0
41.5
40.7
174.0
42.1
42.1
41.2
186.0
43.3
42.9
41.8
200.0
44.6
43.7
42.4
213.0
45.8
44.5
43.1

30
132.0
40.0
43.4
42.9
143.0
41.3
43.8
43.2
155.0
42.6
44.4
43.6
167.0
44.0
45.0
44.1
180.0
45.3
45.7
44.7
193.0
46.6
46.5
45.3
206.0
48.0
47.3
46.0

32
129.0
40.8
45.4
44.9
140.0
42.2
45.8
45.2
151.0
43.7
46.3
45.6
163.0
45.1
46.9
46.1
175.0
46.5
47.6
46.6
188.0
47.9
48.3
47.3
201.0
49.4
49.1
48.0

Air Temperature
35
123.0
42.0
48.3
47.9
134.0
43.6
48.7
48.1
145.0
45.1
49.2
48.5
157.0
46.6
49.7
49.0
169.0
48.2
50.4
49.5
181.0
49.8
51.1
50.2
194.0
51.3
51.9
50.8

Entering Condenser (C)
38
41
43
118.0
112.0
109.0
43.1
44.0
44.5
51.3
54.2
56.2
50.9
53.8
55.9
128.0
122.0
119.0
44.7
45.8
46.4
51.6
54.4
56.4
51.1
54.0
56.0
139.0
133.0
129.0
46.4
47.6
48.4
52.0
54.9
56.8
51.5
54.4
56.4
150.0
144.0
140.0
48.1
49.5
50.3
52.6
55.4
57.3
51.9
54.8
56.8
162.0
155.0
151.0
49.8
51.3
52.2
53.2
56.0
57.9
52.5
55.4
57.3
174.0
167.0
163.0
51.5
53.1
54.1
53.9
56.7
58.6
53.1
55.9
57.9
187.0
179.0
175.0
53.2
55.0
56.1
54.7
57.4
59.3
53.7
56.6
58.5

27
169.0
48.6
39.8
37.7
182.0
50.2
40.2
38.2
196.0
51.8
40.9
38.8
211.0
53.4
41.6
39.5
226.0
55.0
42.3
40.1
241.0
56.6
43.1
40.7
257.0
58.2
44.0
41.4

30
163.0
50.1
42.7
40.7
176.0
51.8
43.1
41.2
190.0
53.6
43.7
41.7
204.0
55.4
44.4
42.3
218.0
57.1
45.1
43.0
233.0
58.9
45.9
43.6
249.0
60.7
46.7
44.3

32
159.0
51.1
44.6
42.6
172.0
52.9
45.0
43.1
185.0
54.8
45.6
43.7
199.0
56.6
46.3
44.3
213.0
58.5
47.0
44.9
228.0
60.4
47.8
45.5
244.0
62.2
48.6
46.2

Air Temperature
35
153.0
52.5
47.5
45.5
166.0
54.4
47.8
46.0
179.0
56.4
48.4
46.5
192.0
58.5
49.1
47.1
206.0
60.5
49.8
47.7
221.0
62.5
50.5
48.4
236.0
64.6
51.3
49.0

Entering Condenser (C)
38
41
43
147.0
141.0
137.0
53.8
54.9
55.6
50.4
53.4
55.4
48.5
51.4
53.4
159.0
153.0
149.0
55.8
57.1
57.9
50.7
53.6
55.5
48.9
51.7
53.6
172.0
166.0
161.0
58.0
59.4
60.3
51.3
54.1
56.0
49.4
52.3
54.2
185.0
179.0
174.0
60.1
61.7
62.7
51.9
54.7
56.5
50.0
52.8
54.7
199.0
192.0
187.0
62.3
64.1
65.1
52.6
55.3
57.2
50.6
53.4
55.3
213.0
206.0
201.0
64.5
66.4
67.6
53.3
56.1
57.9
51.2
54.0
55.9
228.0
220.0
215.0
66.7
68.8
70.0
54.1
56.8
58.7
51.8
54.7
56.5

46
103.0
45.4
59.1
58.9
113.0
47.4
59.4
59.0
123.0
49.5
59.7
59.3
134.0
51.5
60.2
59.7
145.0
53.6
60.7
60.2
156.0
55.6
61.4
60.7
167.0
57.7
62.1
61.3

49
97.8
46.0
62.1
61.9
107.0
48.2
62.3
62.0
117.0
50.4
62.7
62.3
127.0
52.6
63.1
62.6
138.0
54.8
63.6
63.1
149.0
57.0
64.2
63.6
160.0
59.2
64.8
64.2

52
92.5
46.6
65.1
64.8
102.0
48.9
65.2
65.0
111.0
51.2
65.6
65.2
121.0
53.5
65.9
65.5
132.0
55.9
66.4
66.0
142.0
58.2
67.0
66.5
153.0
60.6
67.6*
67.0

38AH134 MODULE 134B
SST
(C)
−2

0

2

4

6

8

10

CMP
SCT
SDT
SST
TCG

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

21
181.0
45.2
34.0
31.9
195.0
46.5
34.5
32.4
210.0
47.8
35.2
33.0
224.0
49.0
36.0
33.6
240.0
50.3
36.7
34.3
256.0
51.5
37.6
34.9
273.0
52.8
38.4
35.6

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (C)
Saturated Discharge Temperature (leaving compressor) (C)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (kW)

46
131.0
56.6
58.3
56.3
143.0
59.1
58.4
56.5
155.0
61.6
58.9
57.0
167.0
64.1
59.3
57.5
180.0
66.7
60.0
58.1
193.0
69.3
60.7
58.7
207.0
71.9
61.4
59.3

49
125.0
57.4
61.3
59.3
136.0
60.1
61.4
59.4
148.0
62.7
61.8
59.9
160.0
65.4
62.2
60.3
173.0
68.1
62.8
60.9
186.0
70.9
63.4
61.5
199.0
73.7
64.2
62.1

52
119.0
58.2
64.3
62.2
130.0
61.0
64.3
62.4
142.0
63.7
64.6
62.7
153.0
66.6
65.0
63.1
165.0
69.4
65.5
63.7
178.0
72.4
66.2
64.2
191.0
75.3
66.9
64.8

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 8.3 C superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

71

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — ENGLISH
38AH044
SST
(F)
20

25

30

35

40

45

50

90
242.0
25.8
111.0
279.0
27.1
111.5
317.0
28.4
112.0
357.0
29.6
113.0
400.0
30.9
113.5
444.0
32.0
115.0
491.0
33.1
117.0

Air Temperature
95
230.0
26.2
116.0
265.0
27.8
116.0
303.0
29.2
116.5
342.0
30.6
118.0
384.0
31.9
118.5
427.0
33.2
120.0
473.0
34.5
121.5

Entering Condenser (F)
100
105
110
216.0
202.0
189.3
26.6
26.9
27.0
121.0
125.5
131.0
251.0
238.0
224.0
28.4
28.8
29.1
121.0
126.0
131.0
289.0
274.0
259.0
30.0
30.6
31.1
121.5
126.5
131.5
328.0
312.0
297.0
31.4
32.3
33.0
122.5
127.0
132.5
368.0
351.0
336.0
33.0
34.0
34.8
123.5
128.0
133.0
411.0
394.0
376.0
34.4
35.5
36.5
124.5
129.5
134.5
455.0
438.0
419.0
35.8
37.1
38.2
126.0
131.0
135.5

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
293.0
22.9
91.0
332.0
23.7
91.6
373.0
24.4
92.4
416.0
25.1
93.6
462.0
25.8
94.9
509.0
26.4
96.4
560.0
27.0
98.0

80
268.0
24.4
102.0
305.0
25.5
101.5
345.0
26.5
102.0
387.0
27.5
103.5
431.0
28.4
104.5
477.0
29.3
106.0
525.0
30.2
107.5

85
255.0
25.1
106.0
292.0
26.3
106.5
331.0
27.5
107.0
372.0
28.6
108.0
415.0
29.7
109.5
460.0
30.6
111.0
508.0
31.7
112.5

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
341.0
27.8
95.5
387.0
28.9
96.0
435.0
29.9
96.7
485.0
30.9
97.7
538.0
31.9
99.2
593.0
32.9
100.9
652.0
34.0
102.7

80
313.0
29.5
105.5
357.0
30.9
105.5
403.0
32.3
106.5
451.0
33.5
107.0
503.0
34.8
108.5
555.0
36.1
110.0
611.0
37.4
112.0

85
299.0
30.2
110.5
342.0
31.8
110.5
386.0
33.3
111.0
434.0
34.8
112.0
485.0
36.1
113.0
537.0
37.6
114.5
592.0
39.1
116.5

90
286.0
30.9
115.5
327.0
32.6
115.5
371.0
34.3
116.0
417.0
35.9
117.0
467.0
37.5
118.0
518.0
39.1
119.5
571.0
40.6
121.0

Air Temperature Entering Condenser (F)
95
100
105
110
272.0
259.0
245.0
231.2
31.5
32.0
32.4
32.6
120.5
125.5
130.5
135.5
312.0
297.0
282.0
268.0
33.4
34.1
34.7
35.1
120.5
125.5
130.5
135.5
355.0
340.0
323.0
308.0
35.3
36.1
36.8
37.4
121.0
126.0
131.0
136.0
401.0
384.0
367.0
350.0
37.0
38.0
38.9
39.7
121.5
126.5
131.5
136.5
449.0
431.0
412.0
395.0
38.7
39.9
41.0
41.9
123.0
128.0
132.5
137.0
499.0
480.0
461.0
442.0
40.4
41.8
43.0
44.1
124.0
128.5
133.5
138.5
551.0
532.0
511.0
491.0
42.2
43.7
45.0
46.3
126.0
130.0
135.0
139.5

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
415.0
33.6
93.4
468.0
34.9
94.0
523.0
36.2
95.0
582.0
37.4
96.3
644.0
38.7
98.0
708.0
40.0
100.0
776.0
41.2
102.0

80
383.0
35.7
103.0
434.0
37.4
104.0
487.0
39.0
104.5
544.0
40.6
105.5
603.0
42.2
107.5
664.0
43.9
109.0
729.0
45.5
111.0

85
368.0
36.7
108.0
417.0
38.6
109.0
469.0
40.3
109.5
525.0
42.1
110.5
582.0
43.9
112.5
642.0
45.7
114.0
706.0
47.5
116.0

90
352.0
37.5
113.0
401.0
39.6
113.5
451.0
41.5
114.5
505.0
43.5
115.5
562.0
45.5
116.5
620.0
47.4
118.5
682.0
49.4
120.5

Air Temperature
95
337.0
38.3
118.0
384.0
40.6
118.5
434.0
42.7
119.0
487.0
44.8
120.5
542.0
47.0
121.5
600.0
49.1
123.5
660.0
51.3
125.0

115
175.9
27.1
135.5
210.0
29.4
136.0
244.0
31.6
136.5
281.0
33.6
136.5
320.0
35.6
138.0
359.0
37.5
139.0
401.0
39.3
140.5

120
162.6
27.0
140.5
195.1
29.6
141.0
230.0
31.9
141.0
265.0
34.1
141.5
303.0
36.3
142.5
343.0
38.4
144.0
384.0
40.4
145.5

125
149.1
26.7
145.5
180.8
29.5
146.0
214.0
32.1
146.0
250.0
34.5
146.5
287.0
36.9
147.5
325.0
39.2
148.5
366.0
41.3
149.5

120
204.9
33.0
145.5
239.2
35.9
145.5
277.0
38.5
145.5
316.0
41.1
146.0
359.0
43.7
146.5
403.0
46.3
148.0
450.0*
48.8*
149.0*

125
191.2*
33.0*
150.5*
225.1*
36.0*
150.5*
261.0*
38.9*
150.5*
300.0*
41.7*
151.0*
341.0*
44.5*
151.5*
385.0*
47.1*
153.0*
431.0*
49.8*
153.5*

120
261.0
40.8
143.0
302.0
43.9
143.0
346.0
47.0
144.0
393.0
50.0
144.5
442.0
53.0
145.5
493.0
56.1
146.6
546.0
59.1
148.5

125
246.0
41.0
148.0
285.0
44.3
148.0
328.0
47.5
149.0
374.0
50.7
149.5
421.0*
54.0*
150.5*
471.0*
57.1*
151.5*
523.0*
60.3*
153.5*

38AH054
SST
(F)
20

25

30

35

40

45

50

115
217.6
32.9
140.5
253.0
35.6
140.5
292.0
38.0
141.0
333.0
40.5
141.0
377.0
42.9
142.0
423.0
45.2
143.0
471.0
47.5
144.5

38AH064
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

72

—
—
—
—

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

Entering Condenser (F)
100
105
110
321.0
306.0
290.0
39.0
39.6
40.1
123.0
128.0
133.0
367.0
350.0
335.0
41.4
42.2
42.8
123.5
128.5
133.5
416.0
399.0
380.0
43.7
44.7
45.5
124.0
129.0
134.0
467.0
448.0
429.0
46.0
47.2
48.2
125.0
130.0
134.5
521.0
501.0
481.0
48.3
49.6
50.8
126.5
131.5
136.0
578.0
556.0
535.0
50.7
52.2
53.5
128.0
132.5
137.5
636.0
614.0
591.0
53.0
54.7
56.2
130.0
134.5
139.5

115
275.0
40.5
138.0
318.0
43.4
138.0
363.0
46.3
139.0
410.0
49.2
139.5
461.0
52.0
140.5
514.0
54.9
142.5
569.0
57.7
143.5

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT RATINGS ENGLISH (cont)
38AH074
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
513.0
42.4
92.1
574.0
44.1
92.7
638.0
45.8
93.9
706.0
47.7
95.5
776.0
49.5
97.3
850.0
51.2
99.3
930.0
53.0
101.5

80
478.0
44.9
102.0
538.0
47.0
102.5
600.0
49.1
103.5
664.0
51.3
104.5
731.0
53.6
106.5
803.0
55.8
108.5
879.0
57.9
110.5

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
574.0
50.7
97.1
644.0
52.9
97.2
721.0
54.9
97.4
802.0
56.9
98.1
887.0
58.9
99.2
976.0
61.1
100.5
1067.0
63.3
102.5

80
536.0
53.3
107.0
604.0
55.9
107.0
676.0
58.5
107.0
754.0
60.9
108.0
835.0
63.5
109.0
920.0
66.1
110.5
1009.0
68.7
112.0

85
461.0
46.0
107.0
520.0
48.3
107.0
580.0
50.6
108.0
643.0
53.0
109.5
710.0
55.4
111.5
780.0
57.8
113.0
853.0
60.3
115.0

90
444.0
47.1
112.0
501.0
49.6
112.0
561.0
52.1
113.0
623.0
54.6
114.5
688.0
57.2
116.0
756.0
59.8
118.0
828.0
62.5
120.0

Air Temperature
95
427.0
48.1
117.0
482.0
50.7
117.0
541.0
53.4
118.0
603.0
56.1
119.0
666.0
58.9
120.5
733.0
61.8
122.5
803.0
64.6
124.5

Entering Condenser (F)
100
105
110
410.0
393.0
376.0
48.9
49.6
50.2
122.0
126.5
131.5
465.0
446.0
428.0
51.7
52.7
53.5
122.0
127.0
132.0
522.0
503.0
483.0
54.6
55.8
56.8
123.0
128.0
132.5
581.0
561.0
540.0
57.6
58.8
60.1
123.5
128.5
133.5
644.0
622.0
600.0
60.5
62.0
63.4
125.5
130.0
134.5
709.0
686.0
662.0
63.5
65.3
66.8
127.0
131.5
136.5
778.0
753.0
727.0
66.6
68.6
70.3
129.0
133.5
138.0

115
360.0
50.8
136.5
410.0
54.3
137.0
463.0
57.8
137.0
520.0
61.3
138.0
578.0
64.8
139.5
640.0
68.4
141.0
703.0
72.1
143.0

120
342.0
51.2
142.0
392.0
54.9
142.0
444.0
58.6
142.0
499.0
62.3
143.0
557.0
66.0
144.0
616.0
69.8
145.5
678.0
73.7
147.0

125
326.0
51.6
147.0
373.0
55.4
147.0
425.0
59.3
147.0
479.0
63.2
148.0
534.0
67.1
148.5
593.0*
71.1*
150.0*
653.0*
75.1*
152.0*

115
412.0
59.9
142.0
467.0
64.0
142.0
526.0
68.0
142.0
590.0
72.0
143.0
659.0
76.1
143.0
731.0
80.2
144.0
807.0
84.4
145.0

120
395.0
60.6
147.0
448.0
64.8
147.0
506.0
69.0
147.0
568.0
73.2
147.0
634.0
77.5
148.0
705.0
81.8
149.0
779.0
86.2
150.0

125
378.0*
61.1*
152.0*
430.0*
65.5*
152.0*
486.0*
69.9*
152.0*
546.0*
74.4*
152.0*
610.0*
78.8*
153.0*
679.0*
83.3*
154.0*
750.0*
87.9*
154.5*

38AH084
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

—
—
—
—

85
518.0
54.5
112.0
584.0
57.3
112.0
654.0
60.1
112.0
730.0
62.9
113.0
809.0
65.5
113.5
893.0
68.3
115.0
980.0
71.3
116.5

90
500.0
55.6
117.0
564.0
58.7
117.0
632.0
61.7
117.0
706.0
64.7
118.0
785.0
67.5
118.5
866.0
70.6
119.5
950.0
73.7
121.5

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

Air Temperature Entering Condenser (F)
95
100
105
110
482.0
464.0
446.0
429.0
56.6
57.6
58.4
59.2
122.0
127.0
132.0
137.0
544.0
524.0
505.0
486.0
59.9
61.0
62.1
63.0
122.0
127.0
132.0
137.0
611.0
590.0
568.0
548.0
63.1
64.5
65.7
66.8
122.0
127.0
132.0
137.0
683.0
660.0
636.0
614.0
66.3
67.9
69.3
70.7
123.0
128.0
133.0
138.0
759.0
734.0
709.0
684.0
69.5
71.3
72.9
74.5
123.5
128.0
133.0
138.0
839.0
811.0
785.0
758.0
72.7
74.7
76.7
78.5
124.5
129.5
134.0
139.0
922.0
892.0
864.0
836.0
76.1
78.3
80.5
82.4
126.0
130.5
135.5
140.5

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

73

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — ENGLISH (cont)
38AH094
SST
(F)

20

25

30

35

40

45

50

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

70
657.0
54.3
93.9
92.1
91.7
90.4
738.0
56.5
95.0
92.4
92.1
90.2
821.0
58.8
96.7
93.3
93.0
90.5
907.0
61.3
98.7
94.7
94.3
91.2
999.0
63.8
101.0
96.5
95.7
92.3
1093.0
66.3
104.0
98.6
97.4
93.6
1193.0
68.9
106.0
101.0
99.1
95.1

80
611.0
57.4
104.0
102.0
102.0
101.0
689.0
60.2
105.0
102.0
102.0
100.0
769.0
62.9
106.0
103.0
103.0
101.0
853.0
65.8
108.0
104.0
104.0
101.0
940.0
68.8
110.0
106.0
106.0
102.0
1031.0
71.8
112.0
108.0
108.0
104.0
1127.0
74.8
115.0
110.0
109.0
105.0

85
588.0
59.0
109.0
107.0
107.0
106.0
663.0
62.0
109.0
107.0
108.0
106.0
743.0
65.0
111.0
108.0
108.0
106.0
825.0
68.1
112.0
109.0
109.0
107.0
911.0
71.3
115.0
111.0
111.0
108.0
1001.0
74.6
117.0
112.0
113.0
109.0
1095.0
77.8
119.0
114.0
114.0
110.0

Air Temperature Entering Condenser (F)
90
95
100
105
564.0
540.0
517.0
494.0
60.2
61.4
62.4
63.2
114.0
119.0
124.0
129.0
112.0
117.0
122.0
127.0
113.0
118.0
123.0
128.0
111.0
116.0
121.0
126.0
638.0
614.0
589.0
564.0
63.5
64.9
66.2
67.3
114.0
119.0
124.0
129.0
112.0
117.0
122.0
127.0
113.0
118.0
123.0
128.0
111.0
116.0
121.0
126.0
716.0
691.0
664.0
638.0
66.8
68.5
70.0
71.5
115.0
120.0
125.0
130.0
113.0
118.0
123.0
127.0
113.0
118.0
123.0
128.0
111.0
116.0
121.0
126.0
798.0
771.0
742.0
714.0
70.2
72.0
73.8
75.5
117.0
122.0
126.0
131.0
114.0
119.0
123.0
128.0
114.0
119.0
124.0
129.0
112.0
117.0
122.0
127.0
882.0
853.0
824.0
793.0
73.6
75.8
77.8
79.7
119.0
124.0
128.0
133.0
115.0
120.0
125.0
129.0
116.0
121.0
126.0
131.0
113.0
118.0
122.0
127.0
970.0
939.0
908.0
877.0
77.1
79.5
81.8
83.9
121.0
126.0
130.0
135.0
117.0
122.0
126.0
131.0
118.0
123.0
127.0
132.0
114.0
119.0
124.0
129.0
1062.0
1029.0
996.0
963.0
80.7
83.3
85.8
88.3
124.0
128.0
133.0
137.0
119.0
124.0
128.0
133.0
119.0
124.0
129.0
134.0
115.0
120.0
125.0
130.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (1000 Btuh)

74

110
470.0
63.9
134.0
132.0
133.0
131.0
538.0
68.3
134.0
132.0
133.0
131.0
611.0
72.7
134.0
132.0
133.0
131.0
686.0
77.0
136.0
133.0
134.0
132.0
764.0
81.4
137.0
134.0
135.0
132.0
845.0
86.0
139.0
136.0
137.0
134.0
929.0
90.5
142.0
137.0
139.0
135.0

115
446.0
64.4
139.0
137.0
138.0
136.0
514.0
69.1
139.0
137.0
138.0
136.0
585.0
73.8
139.0
137.0
138.0
136.0
658.0
78.4
140.0
138.0
139.0
137.0
734.0
83.1
142.0
139.0
140.0
137.0
814.0
87.9
144.0
140.0
142.0
138.0
896.0
92.7
146.0
142.0
143.0
140.0

120
423.0
64.7
144.0
142.0
143.0
142.0
488.0
69.8
144.0
142.0
143.0
141.0
557.0
74.7
144.0
142.0
143.0
141.0
630.0
79.6
145.0
143.0
144.0
142.0
704.0
84.5
146.0
144.0
145.0
142.0
782.0
89.6
148.0
145.0
146.0
143.0
862.0
94.7
150.0
147.0
148.0
145.0

125
400.0
64.8
149.0
147.0
148.0
147.0
463.0
70.2
149.0
147.0
148.0
146.0
531.0
75.5
149.0
147.0
148.0
146.0
602.0
80.7
150.0
148.0
149.0
147.0
675.0
85.9
151.0
149.0
150.0
147.0
751.0
91.2
153.0
150.0
151.0
148.0
829.0
96.6
155.0*
151.0
153.0
149.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT RATINGS — ENGLISH (cont)
38AH104
SST
(F)

20

25

30

35

40

45

50

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

70
747.0
58.4
91.9
93.5
89.8
90.9
837.0
61.0
93.0
95.1
90.2
91.7
932.0
63.8
94.7
97.1
91.2
92.9
1032.0
66.7
96.7
99.4
92.5
94.4
1137.0
69.5
98.9
102.0
94.0
96.0
1247.0
72.4
101.0
105.0
95.6
97.8
1363.0
75.5
104.0
108.0
97.3
99.6

80
689.0
62.2
102.0
103.0
100.0
101.0
777.0
65.2
102.0
104.0
100.0
102.0
869.0
68.5
104.0
106.0
101.0
103.0
964.0
71.8
106.0
108.0
103.0
104.0
1065.0
75.2
108.0
111.0
104.0
106.0
1170.0
78.7
110.0
113.0
106.0
108.0
1281.0
82.2
113.0
116.0
107.0
110.0

85
661.0
63.9
107.0
108.0
105.0
106.0
747.0
67.3
107.0
109.0
105.0
107.0
837.0
70.8
109.0
111.0
106.0
108.0
930.0
74.4
110.0
113.0
108.0
109.0
1029.0
78.1
112.0
115.0
109.0
111.0
1132.0
81.8
115.0
118.0
111.0
113.0
1240.0
85.6
117.0
120.0
112.0
115.0

90
633.0
65.6
112.0
113.0
110.0
111.0
718.0
69.2
112.0
114.0
111.0
112.0
805.0
72.9
113.0
115.0
111.0
113.0
896.0
76.8
115.0
117.0
112.0
114.0
993.0
80.7
117.0
120.0
114.0
116.0
1094.0
84.7
119.0
122.0
116.0
118.0
1199.0
88.8
122.0
125.0
117.0
120.0

Air Temperature Entering Condenser (F)
95
100
105
604.0
577.0
549.0
67.0
68.3
69.5
116.0
121.0
126.0
118.0
123.0
128.0
116.0
121.0
126.0
116.0
122.0
127.0
687.0
658.0
628.0
70.9
72.6
74.0
117.0
122.0
127.0
119.0
123.0
128.0
116.0
121.0
126.0
117.0
122.0
127.0
773.0
742.0
711.0
74.9
76.8
78.5
118.0
123.0
127.0
120.0
125.0
129.0
116.0
121.0
126.0
118.0
123.0
128.0
863.0
829.0
796.0
78.9
81.0
83.1
119.0
124.0
129.0
122.0
126.0
131.0
117.0
122.0
127.0
119.0
124.0
129.0
957.0
921.0
886.0
83.2
85.5
87.8
121.0
126.0
130.0
124.0
128.0
133.0
119.0
124.0
128.0
121.0
126.0
131.0
1054.0
1017.0
980.0
87.4
90.1
92.5
124.0
128.0
132.0
126.0
131.0
135.0
120.0
125.0
130.0
123.0
128.0
132.0
1158.0
1117.0
1077.0
91.7
94.7
97.4
126.0
130.0
135.0
129.0
133.0
138.0
122.0
127.0
132.0
125.0
130.0
134.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (1000 Btuh)

110
523.0
70.5
131.0
133.0
131.0
132.0
599.0
75.2
132.0
133.0
131.0
132.0
680.0
80.0
132.0
134.0
131.0
133.0
763.0
84.9
133.0
136.0
132.0
134.0
851.0
89.9
135.0
137.0
133.0
135.0
942.0
94.9
137.0
140.0
135.0
137.0
1037.0
100.1
139.0
142.0
137.0
139.0

115
495.0
71.3
136.0
138.0
136.0
137.0
571.0
76.4
137.0
138.0
136.0
137.0
649.0
81.4
137.0
139.0
136.0
138.0
731.0
86.6
138.0
140.0
137.0
139.0
816.0
91.8
140.0
142.0
138.0
140.0
905.0
97.1
141.0
144.0
140.0
142.0
998.0
102.6
144.0
146.0
141.0
144.0

120
469.0
71.9
141.0
142.0
141.0
142.0
541.0
77.4
141.0
143.0
141.0
142.0
619.0
82.7
142.0
144.0
141.0
143.0
698.0
88.1
143.0
145.0
142.0
144.0
781.0
93.6
144.0
147.0
143.0
145.0
868.0
99.2
146.0
149.0
144.0
147.0
958.0
104.9
148.0
151.0
146.0
148.0

125
443.0
72.4
146.0
147.0
146.0
147.0
513.0
78.1
146.0
148.0
146.0
147.0
588.0
83.8
147.0
148.0
146.0
148.0
665.0
89.5
148.0
150.0
147.0
148.0
747.0
95.3
149.0
151.0
148.0
150.0
831.0
101.2
150.0
153.0
149.0
151.0
919.0
107.1
152.0
155.0*
151.0
153.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

75

Performance data — 38AH044-134 (cont)
CONDENSING UNIT RATINGS — ENGLISH (cont)
38AH124
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)
TCG
CMP
SDT(A)
SCT(A)

OR (B)
OR (B)

OR (B)
OR (B)

OR (B)
OR (B)

OR (B)
OR (B)

OR (B)
OR (B)

OR (B)
OR (B)

OR (B)
OR (B)

70
834.0
67.2
93.3
92.4
940.0
69.8
94.0
92.8
1050.0
72.4
95.0
93.5
1168.0
75.0
96.4
94.6
1290.0
77.6
98.1
95.9
1418.0
80.0
100.0
97.5
1552.0
82.6
102.0
99.3

80
772.0
71.4
103.0
103.0
872.0
74.6
104.0
103.0
980.0
78.0
105.0
103.0
1092.0
81.2
106.0
104.0
1208.0
84.4
108.0
106.0
1332.0
87.8
109.0
107.0
1460.0
91.0
112.0
109.0

85
740.0
73.4
108.0
108.0
840.0
77.0
109.0
108.0
944.0
80.6
110.0
108.0
1052.0
84.2
111.0
109.0
1168.0
87.8
112.0
111.0
1288.0
91.6
114.0
112.0
1414.0
95.2
116.0
114.0

90
710.0
75.2
113.0
113.0
806.0
79.2
114.0
113.0
908.0
83.2
114.0
113.0
1014.0
87.0
116.0
114.0
1126.0
91.0
117.0
116.0
1244.0
95.0
119.0
117.0
1368.0
99.0
121.0
119.0

Air Temperature
95
678.0
76.8
118.0
118.0
772.0
81.0
119.0
118.0
872.0
85.4
119.0
118.0
978.0
89.6
120.0
119.0
1086.0
94.0
122.0
120.0
1202.0
98.2
123.0
122.0
1322.0
102.6
125.0
123.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (1000 Btuh)

76

Entering Condenser (F)
100
105
110
648.0
618.0
588.0
78.0
79.2
80.2
123.0
128.0
133.0
123.0
128.0
133.0
740.0
708.0
674.0
82.8
84.4
85.6
123.0
128.0
133.0
123.0
128.0
133.0
838.0
802.0
768.0
87.4
89.4
91.0
124.0
129.0
134.0
123.0
128.0
133.0
940.0
902.0
864.0
92.0
94.4
96.4
125.0
130.0
135.0
124.0
129.0
134.0
1046.0
1006.0
966.0
96.8
99.4
101.6
126.0
131.0
136.0
125.0
130.0
135.0
1158.0
1116.0
1074.0
101.4
104.4
107.0
128.0
133.0
138.0
127.0
131.0
136.0
1276.0
1232.0
1186.0
106.2
109.4
112.4
130.0
135.0
139.0
128.0
133.0
138.0

115
558.0
81.0
138.0
138.0
642.0
86.8
138.0
138.0
732.0
92.6
139.0
138.0
828.0
98.4
140.0
139.0
926.0
104.0
141.0
140.0
1032.0
109.8
142.0
141.0
1140.0
115.6
144.0
143.0

120
528.0
81.6
143.0
143.0
610.0
87.8
143.0
143.0
698.0
94.0
144.0
143.0
790.0
100.0
144.0
144.0
888.0
106.0
146.0
145.0
988.0
112.2
147.0
146.0
1096.0
118.2
149.0
147.0

125
498.0
82.0
148.0
148.0
578.0
88.6
148.0
148.0
662.0
95.0
149.0
148.0
752.0
101.4
149.0
149.0
848.0
108.0
150.0
150.0
946.0
114.4
152.0
151.0
1050.0
120.8
153.0
152.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT RATINGS — ENGLISH (cont)
38AH134
SST
(F)

20

25

30

35

40

45

50

TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)
TCG
CMP
SDT(A)
SDT(B)
SCT(A)
SCT(B)

70
930.0
76.0
93.3
92.0
92.4
87.6
1045.0
79.0
94.0
92.7
92.8
88.6
1164.0
82.0
95.0
93.8
93.5
90.0
1290.0
85.1
96.4
95.4
94.6
91.5
1422.0
88.2
98.1
97.2
95.9
93.0
1561.0
91.2
100.0
99.2
97.5
94.6
1707.0
94.2
102.0
101.0
99.3
96.3

80
864.0
80.6
103.0
102.0
103.0
97.7
974.0
84.3
104.0
102.0
103.0
98.5
1090.0
88.1
105.0
103.0
103.0
99.7
1211.0
91.9
106.0
105.0
104.0
101.0
1337.0
95.7
108.0
107.0
106.0
103.0
1470.0
99.6
109.0
109.0
107.0
104.0
1610.0
103.4
112.0
111.0
109.0
106.0

85
831.0
82.8
108.0
107.0
108.0
103.0
940.0
86.8
109.0
107.0
108.0
103.0
1052.0
90.9
110.0
108.0
108.0
105.0
1170.0
95.1
111.0
110.0
109.0
106.0
1294.0
99.3
112.0
111.0
111.0
107.0
1425.0
103.6
114.0
113.0
112.0
109.0
1562.0
107.8
116.0
115.0
114.0
111.0

90
799.0
84.7
113.0
112.0
113.0
108.0
905.0
89.1
114.0
112.0
113.0
108.0
1015.0
93.6
114.0
113.0
113.0
109.0
1130.0
98.1
116.0
114.0
114.0
111.0
1252.0
102.7
117.0
116.0
116.0
112.0
1379.0
107.3
119.0
118.0
117.0
114.0
1513.0
111.9
121.0
120.0
119.0
116.0

Air Temperature
95
766.0
86.4
118.0
117.0
118.0
113.0
869.0
91.2
119.0
117.0
118.0
113.0
978.0
96.1
119.0
118.0
118.0
114.0
1092.0
100.9
120.0
119.0
119.0
116.0
1210.0
105.9
122.0
121.0
120.0
117.0
1335.0
110.8
123.0
122.0
122.0
119.0
1465.0
115.9
125.0
124.0
123.0
120.0

LEGEND
CMP
— Compressor Power (kW)
SCT(A) — Saturated Condensing Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SCT(B) — Saturated Condensing Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SDT(A) — Saturated Discharge Temperature (F) for Circuit A (38AH094,104),
or Module 38AH124A or 134A
SDT(B) — Saturated Discharge Temperature (F) for Circuit B (38AH094,104),
or Module 38AH124B or 134B
SST
— Saturated Suction Temperature Entering Condensing Unit
TCG
— Gross Cooling Capacity (1000 Btuh)

Entering Condenser (F)
100
105
110
734.0
702.0
670.0
87.9
89.2
90.3
123.0
128.0
133.0
122.0
127.0
132.0
123.0
128.0
133.0
118.0
123.0
128.0
835.0
801.0
765.0
93.1
94.9
96.3
123.0
128.0
133.0
122.0
127.0
132.0
123.0
128.0
133.0
118.0
123.0
128.0
941.0
904.0
868.0
98.3
100.4
102.2
124.0
129.0
134.0
123.0
127.0
132.0
123.0
128.0
133.0
119.0
124.0
129.0
1052.0
1013.0
973.0
103.5
106.0
108.2
125.0
130.0
135.0
124.0
128.0
133.0
124.0
129.0
134.0
120.0
125.0
130.0
1168.0
1126.0
1084.0
108.9
111.7
114.2
126.0
131.0
136.0
125.0
130.0
135.0
125.0
130.0
135.0
122.0
127.0
131.0
1289.0
1245.0
1200.0
114.2
117.4
120.3
128.0
133.0
138.0
127.0
132.0
136.0
127.0
131.0
136.0
123.0
128.0
133.0
1417.0
1370.0
1322.0
119.7
123.2
126.5
130.0
135.0
139.0
129.0
134.0
138.0
128.0
133.0
138.0
125.0
130.0
134.0

115
638.0
91.3
138.0
137.0
138.0
133.0
731.0
97.7
138.0
137.0
138.0
133.0
830.0
104.0
139.0
137.0
138.0
134.0
934.0
110.4
140.0
138.0
139.0
135.0
1042.0
116.7
141.0
139.0
140.0
136.0
1156.0
123.2
142.0
141.0
141.0
137.0
1274.0
129.8
144.0
143.0
143.0
139.0

120
606.0
92.1
143.0
142.0
143.0
138.0
697.0
98.8
143.0
142.0
143.0
138.0
794.0
105.6
144.0
142.0
143.0
139.0
895.0
112.2
144.0
143.0
144.0
139.0
1001.0
119.0
146.0
144.0
145.0
141.0
1111.0
125.8
147.0
145.0
145.0
142.0
1227.0
132.7
149.0
147.0
147.0
144.0

125
575.0
92.6
148.0
147.0
148.0
143.0
663.0
99.8
148.0
147.0
148.0
143.0
756.0
106.8
149.0
147.0
148.0
144.0
855.0
113.9
149.0
148.0
149.0
144.0
959.0
121.1
150.0
149.0
150.0
145.0
1066.0
128.3
152.0
150.0
150.0
147.0
1179.0
135.5
153.0
152.0
152.0
148.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

77

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH
38AH044 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

90
122.0
12.8
109.0
140.0
13.4
110.0
159.0
14.1
111.0
178.0
14.7
112.0
199.0
15.4
113.0
220.0
16.0
115.0
243.0
16.6
117.0

Air Temperature
95
116.0
13.0
114.0
133.0
13.8
114.0
152.0
144.5
115.0
171.0
15.2
117.0
191.0
15.9
118.0
212.0
16.6
120.0
234.0
17.3
122.0

Entering Condenser (F)
100
105
110
109.0
102.0
95.6
13.2
13.4
13.5
119.0
124.0
129.0
126.0
120.0
113.0
14.1
14.3
14.5
119.0
124.0
129.0
145.0
138.0
130.0
14.9
15.2
15.5
120.0
125.0
130.0
164.0
156.0
149.0
15.6
16.1
16.4
121.0
126.0
131.0
183.0
175.0
168.0
16.4
16.9
17.3
123.0
127.0
132.0
204.0
196.0
187.0
17.2
17.7
18.2
124.0
129.0
134.0
225.0
217.0
208.0
17.9
18.5
19.1
126.0
131.0
135.0

70
147.0
11.3
89.4
166.0
11.7
90.3
186.0
12.1
91.6
207.0
12.5
93.2
229.0
12.9
95.0
252.0
13.3
96.9
276.0
13.7
99.0

80
135.0
12.1
99.1
153.0
12.6
99.9
172.0
13.1
101.0
193.0
13.7
103.0
214.0
14.2
104.0
236.0
14.7
106.0
259.0
15.2
108.0

85
128.0
12.4
104.0
147.0
13.0
105.0
166.1
13.6
106.0
185.0
14.2
107.0
206.0
14.8
109.0
228.0
15.3
111.0
251.0
15.9
113.0

70
146.0
11.8
95.1
166.0
12.2
95.1
188.0
12.5
95.3
210.0
12.8
95.7
234.0
13.1
96.4
258.0
13.4
97.7
284.0
13.7
99.3

80
133.0
12.5
105.0
153.0
13.1
105.0
174.0
13.6
105.0
195.0
14.0
105.0
219.0
14.4
106.0
242.0
14.8
107.0
267.0
15.2
109.0

85
127.0
12.8
110.0
146.0
13.5
110.0
166.0
14.0
110.0
188.0
14.6
110.0
211.0
15.0
111.0
234.0
15.5
112.0
259.0
16.0
113.0

90
121.0
13.1
115.0
139.0
13.8
115.0
159.0
14.5
115.0
180.0
15.1
115.0
203.0
15.6
116.0
226.0
16.2
117.0
250.0
16.7
118.0

Air Temperature Entering Condenser (F)
95
100
105
110
114.0
108.0
101.0
94.2
13.3
13.4
13.5
13.5
120.0
125.0
130.0
135.0
132.0
125.0
118.0
111.0
14.1
14.4
14.6
14.7
120.0
125.0
130.0
135.0
152.0
145.0
137.0
130.0
14.9
15.2
15.5
15.7
120.0
125.0
130.0
135.0
173.0
165.0
157.0
149.0
15.6
16.0
16.4
16.7
120.0
125.0
130.0
135.0
195.0
187.0
178.0
170.0
16.2
16.7
17.2
17.6
121.0
126.0
131.0
135.0
218.0
209.0
201.0
192.0
16.8
17.4
17.9
18.4
121.0
126.0
131.0
136.0
241.0
233.0
224.0
215.0
17.4
18.1
18.7
19.3
123.0
127.0
132.0
137.0

70
197.0
15.7
93.5
222.0
16.3
94.2
249.0
17.0
95.4
278.0
17.6
96.9
308.0
18.3
98.8
339.0
19.0
101.0
372.0
19.6
103.0

80
181.0
16.7
103.0
205.0
17.5
104.0
231.0
18.3
105.0
258.0
19.1
106.0
287.0
19.9
108.0
316.0
20.8
110.0
348.0
21.6
112.0

85
174.0
17.2
108.0
197.0
18.1
109.0
222.0
18.9
110.0
249.0
19.8
111.0
276.0
20.7
113.0
305.0
21.6
115.0
336.0
22.5
117.0

90
166.0
17.6
113.0
189.0
18.6
114.0
213.0
19.5
115.0
239.0
20.5
116.0
266.0
21.5
117.0
294.0
22.4
119.0
324.0
23.4
121.0

Air Temperature
95
159.0
18.0
118.0
181.0
19.1
119.0
205.0
20.1
119.0
230.0
21.1
121.0
256.0
22.2
122.0
284.0
23.2
124.0
313.0
24.3
126.0

115
88.9
13.6
134.0
106.0
14.7
134.0
123.0
15.7
135.0
141.0
16.7
135.0
160.0
17.7
137.0
179.0
18.7
138.0
199.0
19.6
140.0

120
82.2
13.5
139.0
98.6
14.8
139.0
116.0
15.9
139.0
133.0
17.0
140.0
152.0
18.1
141.0
171.0
19.1
143.0
191.0
20.1
145.0

125
75.5
13.4
144.0
91.5
14.8
144.0
108.0
16.0
144.0
126.0
17.2
145.0
144.0
18.4
146.0
162.0
19.5
147.0
182.0
20.6
149.0

120
80.9
13.4
145.0
97.2
14.8
145.0
115.0
16.0
145.0
133.0
17.2
145.0
153.0
18.3
145.0
174.0
19.4
146.0
196.0*
20.4*
146.0*

125
74.2*
13.2*
150.0*
90.1*
14.7*
150.0*
107.0*
16.1*
150.0*
125.0*
17.4*
150.0*
145.0*
18.6*
150.0*
166.0*
19.7*
151.0*
187.0*
20.8*
151.0*

120
124.0
19.5
143.0
143.0
20.9
143.0
163.0
22.3
144.0
185.0
23.7
145.0
208.0
25.1
146.0
232.0
26.6
147.0
257.0
28.0
149.0

125
117.0
19.7
148.0
135.0
21.2
148.0
155.0
22.6
149.0
176.0
24.1
150.0
198.0*
25.6*
151.0*
221.0*
27.1*
152.0*
246.0*
28.6*
154.0*

38AH054 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

115
87.6
13.5
140.0
104.0
14.8
140.0
122.0
15.9
140.0
141.0
17.0
140.0
162.0
18.0
140.0
183.0
18.9
141.0
206.0
19.8
142.0

38AH064 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

78

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

Entering Condenser (F)
100
105
110
151.0
144.0
137.0
18.4
18.7
19.0
123.0
128.0
133.0
173.0
165.0
158.0
19.5
19.9
20.3
124.0
129.0
134.0
196.0
188.0
179.0
20.6
21.1
21.6
124.0
129.0
134.0
220.0
211.0
202.0
21.7
22.3
22.8
125.0
130.0
135.0
246.0
236.0
227.0
22.8
23.4
24.0
127.0
132.0
136.0
273.0
262.0
252.0
24.0
24.7
25.3
129.0
133.0
138.0
301.0
290.0
279.0
25.1
25.9
26.6
131.0
135.0
140.0

115
130.0
19.3
138.0
150.0
20.6
138.0
171.0
21.9
139.0
193.0
23.3
140.0
217.0
24.6
141.0
242.0
26.0
143.0
268.0
27.3
144.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH044 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

90
120.0
13.0
113.0
139.0
13.7
113.0
158.0
14.3
113.0
179.0
14.9
114.0
201.0
15.5
114.0
224.0
16.0
115.0
248.0
16.5
117.0

Air Temperature
95
114.0
13.2
118.0
132.0
14.0
118.0
151.0
14.7
118.0
171.0
15.4
119.0
193.0
16.0
119.0
215.0
16.6
120.0
239.0
17.2
121.0

Entering Condenser (F)
100
105
110
107.0
100.0
93.7
13.4
13.5
13.5
123.0
127.0
132.0
125.0
118.0
111.0
14.3
14.5
14.6
123.0
128.0
133.0
144.0
136.0
129.0
15.1
15.4
15.6
123.0
128.0
133.0
164.0
156.0
148.0
15.8
16.2
16.6
124.0
128.0
133.0
185.0
176.0
168.0
16.6
17.1
17.4
124.0
129.0
134.0
207.0
198.0
189.0
17.2
17.8
18.3
125.0
130.0
135.0
230.0
221.0
211.0
17.9
18.6
19.1
126.0
131.0
136.0

70
146.0
11.6
92.6
166.0
12.0
92.9
187.0
12.3
93.2
209.0
12.6
93.9
233.0
12.9
94.7
257.0
13.1
95.8
284.0
13.3
97.0

80
133.0
12.3
103.0
152.0
12.9
103.0
173.0
13.4
103.0
194.0
13.8
104.0
217.0
14.2
105.0
241.0
14.6
106.0
266.0
15.0
107.0

85
127.0
12.7
108.0
145.0
13.3
108.0
165.0
13.9
108.0
187.0
14.4
109.0
209.0
14.9
110.0
232.0
15.3
111.0
257.0
15.8
112.0

70
195.0
16.0
96.0
221.0
16.7
96.8
247.0
17.4
98.1
275.0
18.1
99.7
304.0
18.8
102.0
335.0
19.5
104.0
368.0
20.3
106.0

80
180.0
17.0
106.0
204.0
17.8
106.0
229.0
18.7
108.0
256.0
19.5
109.0
284.0
20.4
111.0
313.0
21.3
113.0
344.0
22.2
115.0

85
172.0
17.4
111.0
196.0
18.3
111.0
220.0
19.3
112.0
246.0
20.2
114.0
274.0
21.1
115.0
303.0
22.1
117.0
333.0
23.1
120.0

90
165.0
17.8
116.0
188.0
18.8
116.0
212.0
19.8
117.0
237.0
20.8
119.0
264.0
21.9
120.0
292.0
22.9
122.0
321.0
23.9
124.0

Air Temperature Entering Condenser (F)
95
100
105
110
158.0
151.0
144.0
137.0
18.2
18.6
18.9
19.1
121.0
126.0
131.0
136.0
180.0
172.0
164.0
157.0
19.3
19.7
20.1
20.4
121.0
126.0
131.0
136.0
203.0
195.0
186.0
178.0
20.4
20.9
21.3
21.7
122.0
127.0
132.0
137.0
228.0
219.0
210.0
201.0
21.4
22.0
22.5
23.0
123.0
128.0
133.0
138.0
254.0
244.0
234.0
225.0
22.5
23.2
23.8
24.3
125.0
130.0
134.0
139.0
281.0
271.0
260.0
250.0
23.6
24.4
25.1
25.7
127.0
131.0
136.0
141.0
310.0
299.0
287.0
276.0
24.8
25.6
26.3
27.0
129.0
133.0
138.0
142.0

70
218.0
17.9
93.2
246.0
18.6
93.7
274.0
19.2
94.5
304.0
19.8
95.7
336.0
20.4
97.1
369.0
21.0
98.9
404.0
21.6
101.0

80
202.0
19.0
103.0
229.0
19.9
104.0
256.0
20.7
104.0
286.0
21.5
105.0
316.0
22.3
107.0
348.0
23.1
108.0
381.0
23.9
110.0

85
194.0
19.5
108.0
220.0
20.5
109.0
247.0
21.4
109.0
276.0
22.3
110.0
306.0
23.2
112.0
337.0
24.1
113.0
370.0
25.0
115.0

90
186.0
19.9
113.0
212.0
21.0
113.0
238.0
22.0
114.0
266.0
23.0
115.0
296.0
24.0
116.0
326.0
25.0
118.0
358.0
26.0
120.0

Air Temperature
95
178.0
20.3
118.0
203.0
21.5
118.0
229.0
22.6
119.0
257.0
23.7
120.0
286.0
24.8
121.0
316.0
25.9
123.0
347.0
27.0
124.0

115
87.0
13.5
137.0
104.0
14.7
138.0
121.0
15.9
138.0
140.0
16.9
138.0
160.0
17.9
139.0
180.0
18.8
140.0
202.0
19.7
141.0

120
80.4
13.5
142.0
96.5
14.8
143.0
114.0
16.0
143.0
132.0
17.1
143.0
151.0
18.2
144.0
172.0
19.3
145.0
193.0
20.3
146.0

125
73.6
13.3
147.0
89.3
14.7
148.0
106.0
16.1
148.0
124.0
17.3
148.0
143.0
18.5
149.0
163.0
19.7
150.0
184.0
20.7
150.0

120
124.0
19.6
146.0
142.0
21.1
146.0
162.0
22.5
146.0
183.0
23.9
147.0
206.0
25.4
148.0
229.0
26.9
150.0
254.0*
28.4*
152.0*

125
117.0*
19.8*
151.0*
135.0*
21.3*
151.0*
154.0*
22.8*
151.0*
175.0*
24.3*
152.0*
196.0*
25.9*
153.0*
219.0*
27.4*
155.0*
244.0*
29.0*
156.0*

120
137.0
21.3
143.0
159.0
23.0
143.0
183.0
24.7
144.0
208.0
26.3
144.0
234.0
27.9
145.0
261.0
29.5
146.0
289.0
31.1
148.0

125
129.0
21.3
148.0
150.0
23.1
148.0
173.0
24.9
149.0
198.0
26.6
149.0
223.0*
28.4*
150.0*
250.0*
30.0*
151.0*
277.0*
31.7*
153.0*

38AH054 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

115
130.0
19.4
141.0
149.0
20.8
141.0
170.0
22.1
142.0
192.0
23.5
142.0
215.0
24.9
144.0
240.0
26.3
145.0
265.0
27.7
147.0

38AH064 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

Entering Condenser (F)
100
105
110
170.0
162.0
153.0
20.6
20.9
21.1
123.0
128.0
133.0
194.0
185.0
177.0
21.9
22.3
22.5
123.0
128.0
133.0
220.0
211.0
201.0
23.1
23.6
24.0
124.0
129.0
134.0
247.0
237.0
227.0
24.3
24.9
25.4
125.0
130.0
134.0
275.0
265.0
254.0
25.5
26.2
26.8
126.0
131.0
136.0
305.0
294.0
283.0
26.7
27.5
28.2
127.0
132.0
137.0
335.0
324.0
312.0
27.9
28.8
29.6
129.0
134.0
139.0

115
145.0
21.2
138.0
168.0
22.8
138.0
192.0
24.4
139.0
217.0
25.9
139.0
244.0
27.4
140.0
272.0
28.9
142.0
301.0
30.4
143.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

79

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH074 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
221.0
17.8
92.4
249.0
18.4
92.7
277.0
19.0
93.6
307.0
19.7
95.0
338.0
20.3
96.7
370.0
20.9
98.6
405.0
21.5
101.0

80
205.0
18.9
102.0
232.0
19.7
103.0
260.0
20.5
103.0
288.0
21.3
104.0
318.0
22.2
106.0
350.0
23.0
108.0
383.0
23.7
110.0

85
197.0
19.4
107.0
224.0
20.3
107.0
251.0
21.2
108.0
279.0
22.1
109.0
309.0
23.0
111.0
340.0
23.9
112.0
372.0
24.8
114.0

90
189.0
19.9
112.0
215.0
20.9
112.0
242.0
21.9
113.0
270.0
22.8
114.0
299.0
23.8
115.0
329.0
24.8
117.0
361.0
25.8
119.0

Air Temperature
95
181.0
20.3
117.0
206.0
21.4
117.0
233.0
22.5
118.0
261.0
23.5
119.0
289.0
24.6
120.0
319.0
25.7
122.0
350.0
26.8
124.0

Entering Condenser (F)
100
105
110
173.0
165.0
157.0
20.6
20.9
21.0
122.0
127.0
132.0
198.0
189.0
180.0
21.8
22.2
22.5
122.0
127.0
132.0
224.0
215.0
206.0
23.0
23.5
23.9
123.0
128.0
133.0
251.0
242.0
232.0
24.2
24.7
25.3
123.0
128.0
133.0
279.0
269.0
259.0
25.3
26.0
26.6
125.0
129.0
134.0
308.0
298.0
287.0
26.5
27.3
28.0
126.0
131.0
136.0
339.0
328.0
316.0
27.7
28.6
29.4
128.0
133.0
137.0

70
286.0
25.5
98.1
321.0
26.6
98.1
360.0
27.6
98.3
400.0
28.6
98.9
443.0
29.6
99.9
488.0
30.7
101.0
534.0
31.8
103.0

80
267.0
26.8
108.0
301.0
28.1
108.0
337.0
29.4
108.0
376.0
30.6
109.0
417.0
31.9
110.0
460.0
33.2
111.0
505.0
34.5
113.0

85
258.0
27.4
113.0
291.0
28.8
113.0
326.0
30.2
113.0
364.0
31.6
114.0
404.0
32.9
114.0
446.0
34.3
116.0
490.0
35.8
117.0

90
249.0
27.9
118.0
281.0
29.5
118.0
315.0
31.0
118.0
352.0
32.5
119.0
392.0
33.9
119.0
433.0
35.5
120.0
475.0
37.0
122.0

Air Temperature Entering Condenser (F)
95
100
105
110
240.0
231.0
222.0
214.0
28.4
28.9
29.3
29.7
123.0
128.0
133.0
138.0
271.0
261.0
252.0
242.0
30.1
30.6
31.2
31.6
123.0
128.0
133.0
138.0
305.0
294.0
283.0
273.0
31.7
32.4
33.0
33.5
123.0
128.0
133.0
138.0
341.0
329.0
317.0
306.0
33.3
34.1
34.8
35.5
124.0
129.0
134.0
139.0
379.0
366.0
354.0
341.0
34.9
35.8
36.6
37.4
124.0
129.0
134.0
139.0
419.0
405.0
392.0
379.0
36.5
37.5
38.5
39.4
125.0
130.0
135.0
140.0
461.0
446.0
432.0
418.0
38.2
39.3
40.4
41.3
127.0
131.0
136.0
141.0

115
149.0
21.2
137.0
172.0
22.8
137.0
196.0
24.3
137.0
222.0
25.8
138.0
249.0
27.2
139.0
277.0
28.7
140.0
305.0
30.2
142.0

120
140.0
21.3
142.0
163.0
23.0
142.0
187.0
24.6
142.0
212.0
26.2
143.0
239.0
27.7
143.0
266.0
29.3
145.0
294.0
30.9
146.0

125
132.0
21.3
147.0
154.0
23.1
147.0
178.0
24.8
147.0
203.0
26.5
148.0
228.0
28.2
148.0
255.0*
29.9*
149.0*
282.0*
31.5*
151.0*

120
197.0
30.4
148.0
223.0
32.5
148.0
252.0
34.6
148.0
283.0
36.7
148.0
316.0
38.9
149.0
352.0
41.0
150.0
389.0*
43.2*
151.0*

125
188.0*
30.6*
153.0*
214.0*
32.8*
153.0*
242.0*
35.0*
153.0*
272.0*
37.3*
153.0*
304.0*
39.5*
154.0*
339.0*
41.8*
155.0*
375.0*
44.1*
155.0*

38AH084 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

80

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

115
205.0
30.0
143.0
233.0
32.1
143.0
262.0
34.1
143.0
294.0
36.1
144.0
329.0
38.2
144.0
365.0
40.2
145.0
403.0
42.3
146.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH074 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

70
292.0
24.6
91.7
325.0
25.7
92.7
361.0
26.8
94.2
399.0
28.0
96.0
438.0
29.2
97.9
480.0
30.3
100.0
525.0
31.5
102.0

80
273.0
26.0
102.0
306.0
27.3
102.0
340.0
28.6
104.0
376.0
30.0
105.0
413.0
31.4
107.0
453.0
32.8
109.0
496.0
34.2
111.0

85
264.0
26.6
107.0
296.0
28.0
107.0
329.0
29.4
108.0
364.0
30.9
110.0
401.0
32.4
112.0
440.0
33.9
114.0
481.0
35.5
116.0

90
255.0
27.2
112.0
286.0
28.7
112.0
319.0
30.2
113.0
353.0
31.8
115.0
389.0
33.4
117.0
427.0
35.0
119.0
467.0
36.7
121.0

Air Temperature
95
246.0
27.8
117.0
276.0
29.3
117.0
308.0
30.9
118.0
342.0
32.6
119.0
377.0
34.3
121.0
414.0
36.1
123.0
453.0
37.8
125.0

Entering Condenser (F)
100
105
110
237.0
228.0
219.0
28.3
28.7
29.2
122.0
126.0
131.0
267.0
257.0
248.0
29.9
30.5
31.0
122.0
127.0
132.0
298.0
288.0
277.0
31.6
32.3
32.9
123.0
128.0
132.0
330.0
319.0
308.0
33.4
34.1
34.8
124.0
129.0
134.0
365.0
353.0
341.0
35.2
36.0
36.8
126.0
131.0
135.0
401.0
388.0
375.0
37.0
38.0
38.8
128.0
132.0
137.0
439.0
425.0
411.0
38.9
40.0
40.9
130.0
134.0
139.0

115
211.0
29.6
136.0
238.0
31.5
137.0
267.0
33.5
137.0
298.0
35.5
138.0
329.0
37.6
140.0
363.0
39.7
142.0
398.0
41.9
144.0

120
202.0
29.9
142.0
229.0
31.9
142.0
257.0
34.0
142.0
287.0
36.1
143.0
318.0
38.3
145.0
350.0
40.5
146.0
384.0
42.8
148.0

125
194.0
30.3
147.0
219.0
32.3
147.0
247.0
34.5
147.0
276.0
36.7
148.0
306.0
38.9
149.0
338.0*
41.2*
151.0*
371.0*
43.6*
153.0*

70
288.0
25.2
96.1
323.0
26.3
96.2
361.0
27.3
96.5
402.0
28.3
97.3
444.0
29.3
98.5
488.0
30.4
100.0
533.0
31.5
102.0

80
269.0
26.5
106.0
303.0
27.8
106.0
339.0
29.1
106.0
378.0
30.3
107.0
418.0
31.6
108.0
460.0
32.9
110.0
504.0
34.2
111.0

85
260.0
27.1
111.0
293.0
28.5
111.0
328.0
29.9
111.0
366.0
31.3
112.0
405.0
32.6
113.0
447.0
34.0
114.0
490.0
35.5
116.0

90
251.0
27.7
116.0
283.0
29.2
116.0
317.0
30.7
116.0
354.0
32.2
117.0
393.0
33.6
118.0
433.0
35.1
119.0
475.0
36.7
121.0

Air Temperature
95
242.0
28.2
121.0
273.0
29.8
121.0
306.0
31.4
121.0
342.0
33.0
122.0
380.0
34.6
123.0
420.0
36.2
124.0
461.0
37.9
125.0

Entering Condenser (F)
100
105
110
233.0
224.0
215.0
28.7
29.1
29.5
126.0
131.0
136.0
263.0
253.0
244.0
30.4
30.9
31.4
126.0
131.0
136.0
296.0
285.0
275.0
32.1
32.7
33.3
126.0
131.0
136.0
331.0
319.0
308.0
33.8
34.5
35.2
127.0
132.0
137.0
368.0
355.0
343.0
35.5
36.3
37.1
127.0
132.0
137.0
406.0
393.0
379.0
37.2
38.2
39.1
129.0
133.0
138.0
446.0
432.0
418.0
39.0
40.1
41.1
130.0
135.0
140.0

115
207.0
29.9
141.0
234.0
31.9
141.0
264.0
33.9
141.0
296.0
35.9
142.0
330.0
37.9
142.0
366.0
40.0
143.0
404.0
42.1
144.0

120
198.0
30.2
146.0
225.0
32.3
146.0
254.0
34.4
146.0
285.0
36.5
146.0
318.0
38.6
147.0
353.0
40.8
148.0
390.0
43.0
149.0

125
190.0*
30.5*
151.0*
216.0*
32.7*
151.0*
244.0*
34.9*
151.0*
274.0*
37.1*
151.0*
306.0*
39.3*
152.0*
340.0*
41.5*
153.0*
375.0*
43.8*
154.0*

38AH084 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

CMP
SDT
SST
TCG

—
—
—
—

TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT
TCG
CMP
SDT

LEGEND
Compressor Power, kW
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

81

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH094 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

70
366.0
29.7
93.9
91.7
411.0
30.9
95.0
92.1
457.0
32.2
96.7
93.0
505.0
33.6
98.7
94.3
556.0
35.0
101.0
95.7
608.0
36.4
104.0
97.4
663.0
37.8
106.0
99.1

80
338.0
31.4
104.0
102.0
382.0
33.0
105.0
102.0
427.0
34.5
106.0
103.0
474.0
36.1
108.0
104.0
522.0
37.8
110.0
106.0
573.0
39.4
112.0
108.0
626.0
41.1
115.0
109.0

85
324.0
32.3
109.0
107.0
367.0
34.0
109.0
108.0
412.0
35.7
111.0
108.0
458.0
37.4
112.0
109.0
506.0
39.2
115.0
111.0
556.0
41.0
117.0
113.0
608.0
42.8
119.0
114.0

90
310.0
33.0
114.0
113.0
352.0
34.8
114.0
113.0
396.0
36.7
115.0
113.0
442.0
38.6
117.0
114.0
489.0
40.5
119.0
116.0
538.0
42.4
121.0
118.0
589.0
44.4
124.0
119.0

Air Temperature
95
295.0
33.6
119.0
118.0
337.0
35.6
119.0
118.0
381.0
37.6
120.0
118.0
426.0
39.6
122.0
119.0
472.0
41.7
124.0
121.0
520.0
43.8
126.0
123.0
570.0
45.9
128.0
124.0

Entering Condenser (F)
100
105
110
281.0
266.0
251.0
34.1
34.4
34.7
124.0
129.0
134.0
123.0
128.0
133.0
322.0
307.0
291.0
36.3
36.8
37.3
124.0
129.0
134.0
123.0
128.0
133.0
365.0
349.0
333.0
38.4
39.2
39.8
125.0
130.0
134.0
123.0
128.0
133.0
409.0
392.0
376.0
40.6
41.5
42.3
126.0
131.0
136.0
124.0
129.0
134.0
455.0
437.0
420.0
42.8
43.9
44.8
128.0
133.0
137.0
126.0
131.0
135.0
502.0
484.0
465.0
45.1
46.2
47.4
130.0
135.0
139.0
127.0
132.0
137.0
551.0
532.0
512.0
47.3
48.7
49.9
133.0
137.0
142.0
129.0
134.0
139.0

70
349.0
27.0
91.9
89.8
392.0
28.1
93.0
90.2
437.0
29.3
94.7
91.2
484.0
30.6
96.7
92.5
534.0
38.1
98.9
94.0
586.0
33.0
101.0
95.6
640.0
34.3
104.0
97.3

80
321.0
28.8
102.0
100.0
363.0
30.1
102.0
100.0
407.0
31.6
104.0
101.0
452.0
33.0
106.0
103.0
500.0
34.5
108.0
104.0
550.0
36.0
110.0
106.0
602.0
37.5
113.0
107.0

85
308.0
29.6
107.0
105.0
349.0
31.1
107.0
105.0
392.0
32.7
109.0
106.0
436.0
34.3
110.0
108.0
483.0
35.9
112.0
109.0
532.0
37.5
115.0
111.0
583.0
39.2
117.0
112.0

90
294.0
30.4
112.0
110.0
335.0
32.0
112.0
111.0
377.0
33.7
113.0
111.0
420.0
35.4
115.0
112.0
466.0
37.1
117.0
114.0
514.0
38.9
119.0
116.0
564.0
40.7
122.0
117.0

Air Temperature
95
280.0
31.0
116.0
116.0
320.0
32.8
117.0
116.0
361.0
34.6
118.0
116.0
404.0
36.4
119.0
117.0
449.0
38.3
121.0
119.0
495.0
40.2
124.0
120.0
544.0
42.1
126.0
122.0

Entering Condenser (F)
100
105
110
267.0
253.0
240.0
31.6
32.1
32.5
121.0
126.0
131.0
121.0
126.0
131.0
306.0
291.0
277.0
33.6
34.2
34.7
122.0
127.0
132.0
121.0
126.0
131.0
346.0
331.0
316.0
35.5
36.3
37.0
123.0
127.0
132.0
121.0
126.0
131.0
388.0
372.0
356.0
37.4
38.4
39.2
124.0
129.0
133.0
122.0
127.0
132.0
432.0
415.0
398.0
39.4
40.5
41.5
126.0
130.0
135.0
124.0
128.0
133.0
478.0
460.0
442.0
41.5
42.6
43.8
128.0
132.0
137.0
125.0
130.0
135.0
525.0
506.0
487.0
43.5
44.8
46.1
130.0
135.0
139.0
127.0
132.0
137.0

115
236.0
34.8
139.0
138.0
276.0
37.6
139.0
138.0
317.0
40.3
139.0
138.0
359.0
43.0
140.0
139.0
402.0
45.7
142.0
140.0
447.0
48.4
144.0
142.0
493.0
51.1
146.0
143.0

120
221.0
34.7
144.0
143.0
260.0
37.8
144.0
143.0
300.0
40.7
144.0
143.0
342.0
43.6
145.0
144.0
384.0
46.4
146.0
145.0
428.0
49.3
148.0
146.0
473.0
52.2
150.0
148.0

125
207.0
34.5
149.0
148.0
244.0
37.8
149.0
148.0
284.0
41.0
149.0
148.0
325.0
44.1
150.0
149.0
367.0
47.1
151.0
150.0
410.0
50.1
153.0
151.0
454.0
53.2
155.0*
153.0

38AH104 CIRCUIT A
SST
(F)
20

25

30

35

40

45

50

CMP
SCT
SDT
SST
TCG

82

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (F)
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

115
226.0
32.8
136.0
136.0
263.0
35.2
137.0
136.0
301.0
37.6
137.0
136.0
340.0
40.0
138.0
137.0
381.0
42.4
140.0
138.0
424.0
44.8
141.0
140.0
468.0
47.3
144.0
141.0

120
213.0
32.9
141.0
141.0
248.0
35.6
141.0
141.0
286.0
38.1
142.0
141.0
324.0
40.7
143.0
142.0
364.0
43.2
144.0
143.0
406.0
45.8
146.0
144.0
449.0
48.4
148.0
146.0

125
200.0
33.0
146.0
146.0
234.0
35.8
146.0
146.0
271.0
38.6
147.0
146.0
308.0
41.3
148.0
147.0
348.0
44.0
149.0
148.0
388.0
46.7
150.0
149.0
431.0
49.4
152.0
151.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH094 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

70
291.0
24.6
92.1
90.4
327.0
25.6
92.4
90.2
364.0
26.6
93.3
90.5
402.0
27.7
94.7
91.2
443.0
28.8
96.5
92.3
485.0
29.9
98.6
93.6
530.0
31.1
101.0
95.1

80
273.0
26.0
102.0
101.0
307.0
27.2
102.0
100.0
342.0
28.4
103.0
101.0
379.0
29.7
104.0
101.0
418.0
31.0
106.0
102.0
458.0
32.4
108.0
104.0
501.0
33.7
110.0
105.0

85
264.0
26.7
107.0
106.0
296.0
28.0
107.0
106.0
331.0
29.3
108.0
106.0
367.0
30.7
109.0
107.0
405.0
32.1
111.0
108.0
445.0
33.6
112.0
109.0
487.0
35.0
114.0
110.0

90
254.0
27.2
112.0
111.0
286.0
28.7
112.0
111.0
320.0
30.1
113.0
111.0
356.0
31.6
114.0
112.0
393.0
33.1
115.0
113.0
432.0
34.7
117.0
114.0
473.0
36.3
119.0
115.0

Air Temperature
95
245.0
27.8
117.0
116.0
277.0
29.3
117.0
116.0
310.0
30.9
118.0
116.0
345.0
32.4
119.0
117.0
381.0
34.1
120.0
118.0
419.0
35.7
122.0
119.0
459.0
37.4
124.0
120.0

Entering Condenser (F)
100
105
110
236.0
228.0
219.0
28.3
28.8
29.2
122.0
127.0
132.0
121.0
126.0
131.0
267.0
257.0
247.0
29.9
30.5
31.0
122.0
127.0
132.0
121.0
126.0
131.0
299.0
289.0
278.0
31.6
32.3
32.9
123.0
127.0
132.0
121.0
126.0
131.0
333.0
322.0
310.0
33.2
34.0
34.7
123.0
128.0
133.0
122.0
127.0
132.0
369.0
356.0
344.0
35.0
35.8
36.6
125.0
129.0
134.0
122.0
127.0
132.0
406.0
393.0
380.0
36.7
37.7
38.6
126.0
131.0
136.0
124.0
129.0
134.0
445.0
431.0
417.0
38.5
39.6
40.6
128.0
133.0
137.0
125.0
130.0
135.0

70
398.0
31.4
93.5
90.9
445.0
32.9
95.1
91.7
495.0
34.5
97.1
92.9
548.0
36.1
99.4
94.4
603.0
37.7
102.0
96.0
661.0
39.4
105.0
97.8
723.0
41.2
108.0
99.6

80
368.0
33.4
103.0
101.0
414.0
35.1
104.0
102.0
462.0
36.9
106.0
103.0
512.0
38.8
108.0
104.0
565.0
40.7
111.0
106.0
620.0
42.7
113.0
108.0
679.0
44.7
116.0
110.0

85
353.0
34.3
108.0
106.0
398.0
36.2
109.0
107.0
445.0
38.1
111.0
108.0
494.0
40.1
113.0
109.0
546.0
42.2
115.0
111.0
600.0
44.3
118.0
113.0
657.0
46.4
120.0
115.0

90
339.0
35.2
113.0
111.0
383.0
37.2
114.0
112.0
428.0
39.2
115.0
113.0
476.0
41.4
117.0
114.0
527.0
43.6
120.0
116.0
580.0
45.8
122.0
118.0
635.0
48.1
125.0
120.0

Air Temperature
95
324.0
36.0
118.0
116.0
367.0
38.1
119.0
117.0
412.0
40.3
120.0
118.0
459.0
42.5
122.0
119.0
508.0
44.9
124.0
121.0
559.0
47.2
126.0
123.0
614.0
49.6
129.0
125.0

Entering Condenser (F)
100
105
110
310.0
296.0
283.0
36.7
37.4
38.0
123.0
128.0
133.0
122.0
127.0
132.0
352.0
337.0
322.0
39.0
39.8
40.5
123.0
128.0
133.0
122.0
127.0
132.0
396.0
380.0
364.0
41.3
42.2
43.0
125.0
129.0
134.0
123.0
128.0
133.0
441.0
424.0
407.0
43.6
44.7
45.7
126.0
131.0
136.0
124.0
129.0
134.0
489.0
471.0
453.0
46.1
47.3
48.4
128.0
133.0
137.0
126.0
131.0
135.0
539.0
520.0
500.0
48.6
49.9
51.1
131.0
135.0
140.0
128.0
132.0
137.0
592.0
571.0
550.0
51.2
52.6
54.0
133.0
138.0
142.0
130.0
134.0
139.0

115
210.0
29.6
137.0
136.0
238.0
31.5
137.0
136.0
268.0
33.5
137.0
136.0
299.0
35.4
138.0
137.0
332.0
37.4
139.0
137.0
367.0
39.5
140.0
138.0
403.0
41.6
142.0
140.0

120
202.0
30.0
142.0
142.0
228.0
32.0
142.0
141.0
257.0
34.0
142.0
141.0
288.0
36.0
143.0
142.0
320.0
38.1
144.0
142.0
354.0
40.3
145.0
143.0
389.0
42.5
147.0
145.0

125
193.0
30.3
147.0
147.0
219.0
32.4
147.0
146.0
247.0
34.5
147.0
146.0
277.0
36.6
148.0
147.0
308.0
38.8
149.0
147.0
341.0
41.1
150.0
148.0
375.0
43.4
151.0
149.0

38AH104 CIRCUIT B
SST
(F)
20

25

30

35

40

45

50

CMP
SCT
SDT
SST
TCG

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (F)
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

115
269.0
38.5
138.0
137.0
308.0
41.2
138.0
137.0
348.0
43.8
139.0
138.0
391.0
46.6
140.0
139.0
435.0
49.4
142.0
140.0
481.0
52.3
144.0
142.0
530.0
55.3
146.0
144.0

120
256.0
39.0
142.0
142.0
293.0
41.8
143.0
142.0
333.0
44.6
144.0
143.0
374.0
47.4
145.0
144.0
417.0
50.4
147.0
145.0
462.0
53.4
149.0
147.0
509.0
56.5
151.0
148.0

125
243.0
39.4
147.0
147.0
279.0
42.3
148.0
147.0
317.0
45.2
148.0
148.0
357.0
48.2
150.0
148.0
399.0
51.3
151.0
150.0
443.0
54.5
153.0
151.0
488.0
57.7
155.0*
153.0

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

83

Performance data — 38AH044-134 (cont)
CONDENSING UNIT CIRCUIT AND MODULE RATINGS — ENGLISH (cont)
38AH124 MODULE 124A OR 124B; 38AH134 MODULE 134A
SST
(F)
20

25

30

35

40

45

50

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

70
417.0
33.6
93.3
92.4
470.0
34.9
94.0
92.8
525.0
36.2
95.0
93.5
584.0
37.5
96.4
94.6
645.0
38.8
98.1
95.9
709.0
40.0
100.0
97.5
776.0
41.3
102.0
99.3

80
386.0
35.7
103.0
103.0
436.0
37.3
104.0
103.0
490.0
39.0
105.0
103.0
546.0
40.6
106.0
104.0
604.0
42.2
108.0
106.0
666.0
43.9
109.0
107.0
730.0
45.5
112.0
109.0

85
370.0
36.7
108.0
108.0
420.0
38.5
109.0
108.0
472.0
40.3
110.0
108.0
526.0
42.1
111.0
109.0
584.0
43.9
112.0
111.0
644.0
45.8
114.0
112.0
707.0
47.6
116.0
114.0

90
355.0
37.6
113.0
113.0
403.0
39.6
114.0
113.0
454.0
41.6
114.0
113.0
507.0
43.5
116.0
114.0
563.0
45.5
117.0
116.0
622.0
47.5
119.0
117.0
684.0
49.5
121.0
119.0

Air Temperature
95
339.0
38.4
118.0
118.0
386.0
40.5
119.0
118.0
436.0
42.7
119.0
118.0
489.0
44.8
120.0
119.0
543.0
47.0
122.0
120.0
601.0
49.1
123.0
122.0
661.0
51.3
125.0
123.0

Entering Condenser (F)
100
105
110
324.0
309.0
294.0
39.0
39.6
40.1
123.0
128.0
133.0
123.0
128.0
133.0
370.0
354.0
337.0
41.4
42.2
42.8
123.0
128.0
133.0
123.0
128.0
133.0
419.0
401.0
384.0
43.7
44.7
45.5
124.0
129.0
134.0
123.0
128.0
133.0
470.0
451.0
432.0
46.0
47.2
48.2
125.0
130.0
135.0
124.0
129.0
134.0
523.0
503.0
483.0
48.4
49.7
50.8
126.0
131.0
136.0
125.0
130.0
135.0
579.0
558.0
537.0
50.7
52.2
53.5
128.0
133.0
138.0
127.0
131.0
136.0
638.0
616.0
593.0
53.1
54.7
56.2
130.0
135.0
139.0
128.0
133.0
138.0

115
279.0
40.5
138.0
138.0
321.0
43.4
138.0
138.0
366.0
46.3
139.0
138.0
414.0
49.2
140.0
139.0
463.0
52.0
141.0
140.0
516.0
54.9
142.0
141.0
570.0
57.8
144.0
143.0

120
264.0
40.8
143.0
143.0
305.0
43.9
143.0
143.0
349.0
47.0
144.0
143.0
395.0
50.0
144.0
144.0
444.0
53.0
146.0
145.0
494.0
56.1
147.0
146.0
548.0
59.1
149.0
147.0

125
249.0
41.0
148.0
148.0
289.0
44.3
148.0
148.0
331.0
47.5
149.0
148.0
376.0
50.7
149.0
149.0
424.0
54.0
150.0
150.0
473.0
57.2
152.0
151.0
525.0
60.4
153.0
152.0

80
478.0
44.9
102.0
97.7
538.0
47.0
102.0
98.5
600.0
49.1
103.0
99.7
665.0
51.3
105.0
101.0
733.0
53.5
107.0
103.0
804.0
55.7
109.0
104.0
880.0
57.9
111.0
106.0

85
461.0
46.1
107.0
103.0
520.0
48.3
107.0
103.0
580.0
50.6
108.0
105.0
644.0
53.0
110.0
106.0
710.0
55.4
111.0
107.0
781.0
57.8
113.0
109.0
855.0
60.2
115.0
111.0

90
444.0
47.1
112.0
108.0
502.0
49.5
112.0
108.0
561.0
52.0
113.0
109.0
623.0
54.6
114.0
111.0
689.0
57.2
116.0
112.0
757.0
59.8
118.0
114.0
829.0
62.4
120.0
116.0

Air Temperature
95
427.0
48.0
117.0
113.0
483.0
50.7
117.0
113.0
542.0
53.4
118.0
114.0
603.0
56.1
119.0
116.0
667.0
58.9
121.0
117.0
734.0
61.7
122.0
119.0
804.0
64.6
124.0
120.0

Entering Condenser (F)
100
105
110
410.0
393.0
376.0
48.9
49.6
50.2
122.0
127.0
132.0
118.0
123.0
128.0
465.0
447.0
428.0
51.7
52.7
53.5
122.0
127.0
132.0
118.0
123.0
128.0
522.0
503.0
484.0
54.6
55.7
56.7
123.0
127.0
132.0
119.0
124.0
129.0
582.0
562.0
541.0
57.5
58.8
60.0
124.0
128.0
133.0
120.0
125.0
130.0
645.0
623.0
601.0
60.5
62.0
63.4
125.0
130.0
135.0
122.0
127.0
131.0
710.0
687.0
663.0
63.5
65.2
66.8
127.0
132.0
136.0
123.0
128.0
133.0
779.0
754.0
729.0
66.6
68.5
70.3
129.0
134.0
138.0
125.0
130.0
134.0

115
359.0
50.8
137.0
133.0
410.0
54.3
137.0
133.0
464.0
57.7
137.0
134.0
520.0
61.2
138.0
135.0
579.0
64.7
139.0
136.0
640.0
68.3
141.0
137.0
704.0
72.0
143.0
139.0

120
342.0
51.3
142.0
138.0
392.0
54.9
142.0
138.0
445.0
58.6
142.0
139.0
500.0
62.2
143.0
139.0
557.0
66.0
144.0
141.0
617.0
69.7
145.0
142.0
679.0
73.6
147.0
144.0

125
326.0
51.6
147.0
143.0
374.0
55.5
147.0
143.0
425.0
59.3
147.0
144.0
479.0
63.2
148.0
144.0
535.0
67.1
149.0
145.0
593.0
71.1
150.0
147.0
654.0
75.1
152.0
148.0

38AH134 MODULE 134B
SST
(F)
20

25

30

35

40

45

50

CMP
SCT
SDT
SST
TCG

84

—
—
—
—
—

TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT
TCG
CMP
SDT
SCT

70
513.0
42.4
92.0
87.6
575.0
44.1
92.7
88.6
639.0
45.8
93.8
90.0
706.0
47.6
95.4
91.5
777.0
49.4
97.2
93.0
852.0
51.2
99.2
94.6
931.0
52.9
101.0
96.3

LEGEND
Compressor Power, kW
Saturated Condensing Temperature (F)
Saturated Discharge Temperature (leaving compressor) (F)
Saturated Suction Temperature (entering condensing unit)
Total Cooling Capacity, Gross (1000 Btuh)

*May require replacement of the high-pressure cutout switches with switches of a
higher setting.
NOTES:
1. Ratings are based on 15 F superheat and use of R-22 refrigerant.
2. Ratings include suction line losses due to an accumulator.

Typical piping and wiring — 38AH044-134
ROOFTOP INSTALLATION — UNIT 38AH104 WITH SINGLE AIR HANDLER SHOWN

LEGEND
TXV — Thermostatic Expansion Valve
Line Voltage
Piping
Double Riser Piping
(If Required)

*Field supplied.
NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual
for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not intended for, or to
include all details for, a specific installation. Face-split connection shown; row-split connection also
possible.
4. Liquid line solenoid valve (solenoid drop control) is required to minimize refrigerant migration to the
compressor.

85

Typical piping and wiring — 38AH044-134 (cont)
GROUND-LEVEL INSTALLATION — UNIT 38AH104 WITH SINGLE AIR HANDLER SHOWN

LEGEND
TXV — Thermostatic Expansion Valve
Line Voltage
Piping

*Field supplied.
NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System Design Manual for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not intended for, or to include all
details for, a specific installation. Face-split connection shown; row-split connection also possible.
4. Liquid line solenoid valve (solenoid drop control) is required to minimize refrigerant migration to the compressor.

86

Electrical data — 38AH044-134
38AH044-084
UNIT
38AH

VOLTAGE
DESIGNATION

044
054
064
074
084

COMPRESSOR
MODEL
(A/B DUAL-CIRCUIT)
(A1/A2 SINGLE-CIRCUIT)

800 (PW)
900
300 (PW)
900
300 (PW)
900
300 (PW)
900
300 (PW)
900
300 (PW)

NAMEPLATE
VOLTS-PH-Hz

SUPPLY
VOLTAGE*

06E-250/265
06E-265/275
06E-275/299
06E-299/299

COMPRESSOR†

Min

Max

MCA

MOCP

ICF

198
348
325
342
325
342
325
342
325
342
325

254
440
367
440
367
440
367
440
367
440
367

174.6
100.0
100.0
101.1
107.0
114.1
129.8
140.6
170.8
165.2
205.3

225
100
125
125
150
150
175
200
250
225
250

296.7
219.6
165.9
269.6
198.9
335.6
230.5
403.8
300.4
428.4
334.9

230-3-50
380/415-3-50
346-3-50
380/415-3-50
346-3-50
380/415-3-50
346-3-50
380/415-3-50
346-3-50
380/415-3-50
346-3-50

06E-250/250

POWER SUPPLY

A
RLA
67.9
34.6
33.3
34.6
33.3
43.6
44.9
46.8
53.8
65.4
79.5

B
LRA
207
173
115
173
115
223
148
280
168
345
229

RLA
67.9
34.6
33.3
43.6
44.9
46.8
53.8
65.4
79.5
65.4
79.5

LRA
207
173
115
223
148
280
168
345
229
345
229

38AH094,104
SUPPLY
COMPRESSOR NAMEPLATE VOLTAGE*
UNIT
VOLTAGE
A1/A2/B1/B2
38AH DESIGNATION
VOLTS-PH-Hz
MODEL NO.
Min Max
094
104

300 (PW)
900
300 (PW)
900

06E-275/250/
299/—
06E-265/250/
265/265

346-3-50
380/415-3-50
346-3-50
380/415-3-50

325
342
325
342

380
440
380
440

POWER SUPPLY
MCA MOCP ICF
212.9
181.2
205.6
194.3

250
225
250
225

343
444
298
363

COMPRESSOR†
A1
RLA LRA
53.8 168
46.8 280
44.9 148
43.6 223

A2
RLA LRA
33.3 115
34.6 173
33.3 229
34.6 173

B1
B2
RLA LRA RLA LRA
79.5 229
—
—
65.4 345
—
—
44.9 148 49.9 148
43.6 223 43.6 223

38AH124,134
UNIT
38AH
MODULE
124A
124B
134A
134B

VOLTAGE
DESIGNATION
300 (PW)
900
300 (PW)
900

COMPRESSOR
A1/A2
MODEL NO.
06E-275/265
06E-299/275

NAMEPLATE
VOLTS-PH-Hz

SUPPLY
VOLTAGE*

POWER SUPPLY**

Min

Max

MCA

MOCP

ICF

346-3-50

325

367

129.8

175

380/415-3-50
346-3-50
380/415-3-50

342
325
342

440
367
440

114.1
170.8
140.6

150
250
200

COMPRESSOR†
A1

A2

231

RLA
53.8

LRA
168

RLA
44.9

LRA
148

336
300
404

46.8
79.5
65.4

280
229
345

43.6
53.8
46.8

223
168
280

See Legend and Notes on page 88.

87

Electrical Data — 38AH044-134 (cont)
FANS
UNIT/MODULE
38AH
044
054
064
074
084
094
104

CONTROL CIRCUIT

CONDENSER FAN MOTORS
Nameplate Qty Hp Total (No.) FLA Each
Volts-Ph-Hz
kW
230-3-50
(1,2) 5.5 (3,4) 5.4
380/415-3-50 4
1
6.2
(1-4) 3.0
346-3-50
(1-4) 4.4
380/415-3-50 4
(1-4) 3.0
1
6.2
346-3-50
(1-4) 4.4
380/415-3-50 4
(1-4) 3.0
1
6.2
346-3-50
(1-4) 4.4
380/415-3-50 6
(1-6) 3.0
1
9.3
346-3-50
(1-6) 4.4
380/415-3-50 6
(1-6) 3.0
1
9.3
346-3-50
(1-6) 4.4
380/415-3-50
(1-6) 4.4
6
1
9.4
346-3-50
(1-6) 3.0
380/415-3-50 6
(1-6) 4.4
1
9.5
346-3-50
(1-6) 3.0

124A
124B
134A

380/415-3-50
346-3-50

4

1

6.4

(1-4) 4.4
(1-4) 3.0

134B

380/415-3-50
346-3-50

6

1

9.2

(1-6) 4.4
(1-6) 3.0

38AH
044-134
-800
-300
-900

UNIT POWER
V-Ph-Hz
230-3-50
346-3-50
380/415-3-50

CONTROL POWER
V-Ph-Hz
Min
Max
230-1-50
207
253
200-1-50
180
220
230-1-50
207
253

AMPS
2.0
2.4
2.0

LEGEND (for pages 87 and 88)
AWG
FLA
ICF

— American Wire Gage
— Full Load Amps
— Maximum Instantaneous Current Flow During Starting.
(The point in the starting sequence where the sum of the
LRA for the starting compressors, plus the total RLA for all
running compressors plus the FLA for all running fan
motors is maximum.)
IFC
— Indoor-Fan Contactor
kcmil — Thousand Circular Mils
LLS
— Liquid Line Solenoid
LRA
— Locked Rotor Amps
MCA — Minimum Circuit Amps (used for sizing; complies with
National Electrical Code [NEC] section 430-24, U.S.A.)
MOCP — Maximum Overcurrent Protection (used for sizing disconnect; complies with NEC Article 440-22, U.S.A.)
PW
— Part Wind
RLA
— Rated Load Amps
*Units are suitable for use on electrical systems where voltage supplied
to unit terminals is within listed minimum to maximum limits.
†Compressors are across-the-line start unless voltage designation shows
(PW).
**38AH124 and 134 units require a separate power supply for each unit
module.
NOTES:
1. Maximum allowable phase imbalance:
Voltage — 2%
Amps — 10%
2. Maximum incoming wire size for terminal block is 500 kcmil.
3. Wiring for field power supply must be rated 75 C minimum. Use copper, copper-clad aluminum, or aluminum conductors. Maximum incoming wire size for each terminal block is 500 kcmil.
4. Terminal blocks TB3 and TB4 are for external field control connections. Control connections are to be class 1 wiring.

88

5. Field-supplied components (IFC, LLS-A, and LLS-B) must have a
maximum sealed coil rating of 30 va each or less (0.13 amp at
230 vac). Thermostats must have a minimum pilot duty rating as
follows:
38AH

VA
(Each Stage)

AMPS

CONTROL
CIRCUIT
VOLTAGE

044-084
094
104
124
134

300
275
325
300
300

1.30
1.15
1.35
1.30
1.30

240

6. Units have the following va of power available for field-installed
accessories:
38AH044-084 — 175 va
38AH094 — 140 va
38AH104 — 130 va
38AH124,134 — 175 va each module
7. To minimize voltage drop, the following wire sizes are recommended:
LENGTH (Ft)
Up to 50
50-75
More Than 75

INSULATED WIRE — AWG
(35 C Minimum)
No. 18
No. 16
No. 14

8. Unit 38AH124 consists of Modules 124A and 124B. Unit 38AH134
consists of Modules 134A and 134B. Each module has a control box.
9. All fans are protected by a single circuit breaker.

Controls — 38AH044-084
Operating sequence
Circuits A1 and B1 are controlled by independent circuitry.
It is therefore possible to maintain partial cooling capability
even if one compressor is inoperable.
NOTE: Single-circuit units do not have independent control circuitry.
On a call for cooling, the first-stage cooling thermostat
TC1 closes, energizing the first stage of the condenser fans
and timer motor TM-A (TM for single-circuit units). After
12 seconds, the timer energizes lead compressor contactor
C-A1 and the lead compressor starts. (Circuit A compressor is the lead on dual-circuit units, and compressor A1 is
the lead on single-circuit units.) At the same time, solenoid
drop relay SDR2 energizes and closes its contacts, which
energizes and opens liquid line solenoid valve LLS-A (LLS-A1
for single-circuit units). Circuit A (compressor A1 for singlecircuit units) is now operational.
A set of bypass contacts in timer TM-A allows the
circuit A compressor (compressor A1 for single-circuit units)
40 seconds to build sufficient oil pressure. If the oil pressure is insufficient after 40 seconds, circuit A (compressor
A1 for single-circuit units) shuts down and must be reset
manually.
A second set of bypass contacts in timer TM-A (TM for
single-circuit units) allows the refrigerant circuit 21⁄2 minutes
to build sufficient low-side pressure. This time delay is a
start-up feature for low ambient conditions; no accessory is
required. If refrigerant circuit pressure is insufficient to close
the low-pressure switch after 21⁄2 minutes, the circuit A compressor (compressor A1 for single-circuit units) shuts down
for 51⁄2 minutes and then automatically attempts to restart.
No manual reset is required.

Dual-circuit units — If circuit A is insufficient for the cooling requirements, second-stage thermostat TC2 closes to
bring circuit B on line. Circuit B follows the same sequence
of operation as circuit A, except a relay delays circuit B
compressor start-up for 40 seconds after a call for cooling.
Because circuit A has a 12-second delay after TC1 closes,
and circuit B has a 40-second delay after TC2 closes, the
two compressors cannot start at the same time.
Optional single-circuit units — If compressor A1 is insufficient for the cooling requirements, second-stage thermostat TC2 closes, which opens liquid line solenoid valve
LLS-A2. Compressor A2 starts only after the D-D2 contacts in timer TM close (approximately 21⁄2 minutes after
compressor A1 is energized) and the suction pressure is sufficient to close capacity control pressure switches CCPS1
and CCPS2.
All units — When the fan switch on the thermostat is set
for automatic operation (AUTO), the field-supplied indoorfan contactor (IFC) is cycled with the lead compressor. If the
fan switch is set at the continuous position (CONT), the IFC
is energized as long as the unit power is on.
NOTE: Liquid line solenoid valves must be field-supplied
and installed at the evaporator for both dual- and optional
single-circuit units.

89

Controls — 38AH094-134
Operating sequence
Units are controlled with electromechanical components.
Each refrigeration circuit is operated by an independent timer
motor which controls the operation sequence of each circuit. It is possible to maintain partial cooling capability even
if one circuit is inoperable.
On a call for cooling, first stage cooling thermostat TC1
closes. Condenser fans and timer motor (TM) are energized. After approximately 7 seconds, timer contacts E-E1
close. Approximately 12 seconds after TC1 closes, normally open timer contacts B-B1 close for 1 second. This
energizes compressor A1 contacts CA1 and starts the compressor. At the same time, solenoid drop relays (SDRs) and
liquid line solenoid valve no. 1 (LLS-A1) open, and timer
relay no. 1 (TR1) is energized. Normally open TR1 contacts close, completing a circuit around B-B1 and through
compressor A1 contactors to maintain compressor operation when B-B1 contacts open. Contacts E-E1 remain closed
for approximately 40 seconds to bypass the oil pressure
switch. If oil pressure is insufficient when contacts E-E1 open,
the compressor stops, the timer cycles off, and the control
circuit locks out. At start-up, timer motor contacts D-D1 are
closed, bypassing low-pressure relay contacts LPR-A for
21⁄2 minutes. This provides a winter start-up feature.
Approximately 21⁄2 minutes after TC1 closes, timer contacts D-D1 open and D-D2 close. If pressure is insufficient
to close the low-pressure switch, the low-pressure switch
relay remains open, the compressor shuts down, and the
Time Guardt control is initiated. Time Guard control prevents compressor from restarting for 5 minutes after the
demand for cooling is satisfied.

90

Units 38AH094 and 104 — If circuit A operation is
insufficient for the cooling requirements, the thermostat second stage TC2 closes to bring circuit B on-line for cooling.
This circuit follows the same sequence of operation as the
lead circuit, except a 60-second time-delay relay (TDR)
delays compressor start-up for 60 seconds after the call for
cooling.
Modules 124A, 124B, 134A, and 134B — If compressor A1 is insufficient for the cooling requirements, the
thermostat second stage closes, which opens the liquid line
solenoid valve LLS-A2. Compressor A2 starts only after
D-D2 contacts in the timer close and the suction pressure is
sufficient to close the capacity control switches.
All units — When the fan switch is set for automatic (AUTO)
operation, the indoor-fan contactor (IFC) is cycled with the
lead compressor. If the fan switch is set for continuous
(CONT), the IFC is energized as long as the unit power is
on.
Restart after stoppage by safety control — The highpressure switch, compressor discharge gas thermostats, and
the oil pressure switch must be reset manually by breaking
the control power supply at any of the following points:
Control circuit fuse, fan motor circuit breaker, or thermostat. Restart follows the Time Guardt control 5-minute
delay. Stoppage by low-pressure switch results in Time Guard
control 5-minute delay, then unit attempts to restart.
The compressor motor overcurrent protectors are
manual-reset circuit breakers. Reset of control circuit may
also be necessary.

Typical control wiring schematic —
38AH044-134
24-V THERMOSTAT CONTROL WIRING — DUAL-CIRCUIT UNITS 38AH044-084

CR
HD
IFC
IFR
kcmil
LLS
R
RV
TB

LEGEND
Control Relay
Heating Device
Indoor Fan Contactor
Indoor-Fan Relay
Thousand Circular Mils
Liquid Line Solenoid
Heating Relay (fieldsupplied 24-v sealed coil,
10 va maximum rating)
— Reversing Valve
— Terminal Block
Factory Wiring
Field Wiring

—
—
—
—
—
—
—

*Jumper removed only when separate 24-v transformer power source
is used to power the 33CSUCE-06 relay pack.
†To control heating device and provide automatic indoor-fan operation
on heating.
NOTE: Field-supplied liquid line solenoid valves installed at the evaporator are required on all units.

Internal 33CSUCE-06 relay contacts are rated for 1 amp/24 vac.

91

Typical control wiring schematic —
38AH044-134 (cont)
24-V THERMOSTAT CONTROL WIRING — UNITS 38AH094 AND 104

CR
HD
IFC
IFR
LLS
R
RV
TB

92

LEGEND
Control Relay
Heating Device
Indoor Fan Contactor
Indoor-Fan Relay
Liquid Line Solenoid
Heating Relay (fieldsupplied 24-v sealed coil,
10 va maximum rating)
— Reversing Valve
— Terminal Block
Factory Wiring
Field Wiring
—
—
—
—
—
—

*Jumper removed only when separate 24-v transformer power source
is used to power the 33CSUCE-06 relay pack.
†To control heating device and provide automatic indoor-fan operation
on heating.
NOTE: Field-supplied liquid line solenoid valves installed at the evaporator are required on all units.

Internal 33CSUCE-06 relay contacts are rated for 1 amp/24 vac.

24-V THERMOSTAT CONTROL WIRING — UNITS 38AH124 AND 134

CR
HD
IFC
IFR
LLS
R
RV
TB

LEGEND
Control Relay
Heating Device
Indoor Fan Contactor
Indoor-Fan Relay
Liquid Line Solenoid
Heating Relay (fieldsupplied 24-v sealed coil,
10 va maximum rating)
— Reversing Valve
— Terminal Block
Factory Wiring
Field Wiring
—
—
—
—
—
—

*Jumper removed only when separate 24-v transformer power source
is used to power the 33CSUCE-06 relay pack.
†To control heating device and provide automatic indoor-fan operation
on heating.
NOTES:
1. Field-supplied liquid line solenoid valves installed at the evaporator
are required on all units.
2. Disconnect black wire from CR2 terminal 6; cap loose end and secure. Connect new field-supplied wire from CR2 terminal 6 to TB3
terminal 1 on module 124B or 134B.

Internal 33CSUCE-06 relay contacts are rated for 1 amp/24 vac.

93

Application data — 38AH044-134
Operating limits
Maximum cooling load . . . . . . . . . . . . . . . . 51.7 C (125 F)
Minimum return-air temperature . . . . . . . . . 12.8 C (55 F)
Maximum return-air temperature . . . . . . . . 35.0 C (95 F)
Range of acceptable saturation
suction temperature . . . . . . −6.7 to 10.0 C (20 to 50 F)
Maximum discharge temperature . . . . . . 135.0 C (275 F)
Minimum discharge superheat . . . . . . . . . . . 15.6 C (60 F)
NOTES:
1. Select indoor equipment at no less than 40 L/s/kW
(300 cfm/ton) nominal condensing unit capacity.
2. Total combined draw of the 2 field-supplied liquid line
solenoid valves and one air handler fan contactor must
not exceed 90 volt-amperes (va). If the specified voltamperes must be exceeded, use a remote relay to control the load.
3. Select equipment to match or to be slightly less than
peak load.
4. Evaluate oil return when selecting vapor line sizes, especially for partial load conditions.
5. Indoor fan must operate when outdoor unit is
operating.

6. For VAV systems, the total building load is NOT the sum
of the individual peak loads. Equipment selected for the
sum of the individual peak loads will be oversized.
7. For VAV systems with supply- to return-air recycling, use
the equipment room as a return-air plenum.
8. To minimize air recirculation, do not use concentric supply and return grilles.
LIQUID LINE DATA
UNIT
38AH
044
054
064
074
084
094
104
124
134

MAXIMUM
ALLOWABLE
LIQUID LIFT
m
17.5
23.0
19.8
11.4
23.0
14.0
12.8
19.8
11.4

ft
57.5
75.0
65.0
37.5
75.0
46.0
42.0
65.0
37.5

044
054
064
074
084
094
104
124
134

CAPACITY/STAGE (%)
Standard Dual-Circuit Units
Optional Single-Circuit Units
100, 75, 50, 25
100, 75, 50, 25
100, 79, 42, 21
100, 80, 56, 37
100, 84, 48, 32
100, 82, 55, 36
100, 86, 43, 29
100, 81, 57, 38
100, 83, 50, 33
100, 83, 50, 33
100, 85, 55, 44, 33, 22
—
100, 91, 74, 65, 47, 38, 26, 17
—
100, 91, 77, 68, 50, 41, 27, 18
—
100, 90, 76, 66, 45, 37, 25, 16
—

*Additional unloading available with field-installed accessory unloader.
NOTES:
1. Capacities are based on 7.2 C (45 F) saturated suction temperature and 35 C (95 F) outdoor-air
temperature.
2. Single-circuit option available for sizes 044-084 only.

UNLOADING SEQUENCES — OPTIONAL VARIABLE AIR VOLUME
(VAV) UNITS
UNIT
38AH
044
054
064
074
084
094
104
124
134

CAPACITY/STAGE (%)
Standard Dual-Circuit Units
Optional Single-Circuit Units
100, 75, 50, 25
100, 75, 50, 25
100, 79, 58, 42, 21
100, 80, 61, 56, 37
100, 84, 69, 48, 32, 16
100, 82, 64, 55, 36, 18
100, 86, 71, 43, 29, 14
100, 81, 62, 57, 38, 19
100, 83, 67, 50, 33, 17
100, 83, 67, 50, 33, 17
100, 85, 70, 55, 44, 33, 22
—
100, 91, 74, 65, 47, 38, 26, 17
—
100, 91, 82, 77, 68, 50, 41, 32, 27, 18, 9
—
100, 90, 79, 76, 66, 45, 37, 28, 25, 16, 8
—

NOTES:
1. Capacities are based on 7.2 C (45 F) saturated suction temperature and 35 C (95 F) outdoor-air
temperature.
2. Single-circuit option available for sizes 044-084 only.

94

48.3

7

1.1

2

NOTE: Values shown are for units operating at 7.2 C (45 F) saturated
suction at condensing unit and 35 C (95 F) entering outdoor air.

UNLOADING SEQUENCES — STANDARD CONSTANT VOLUME
(CV) UNITS*
UNIT
38AH

LIQUID LINE
Max Allowable
Max Allowable
Pressure Drop
Temp Loss
kPa
Psi
C
F

MINIMUM OUTDOOR-AIR OPERATING TEMPERATURE AND UNLOADING SEQUENCES —
38AH044-084 DUAL-CIRCUIT UNITS
UNIT
38AH

044

054

064

074

084

QUANTITY OF LOADED
COMPRESSOR CYLINDERS
Ckt A
4
2
4
2
4
2
2
4
2
6
4
2
6
4
2
6
4
2
6
4
2
6
4
2
6
4
2

Ckt B
4
4
0
0
6
6
4
0
0
6
6
6
0
0
0
6
6
6
0
0
0
6
6
6
0
0
0

MINIMUM OUTDOOR OPERATING TEMP
w/Std Fans
w/MotormasterT III Control
C
F
C
F

SYSTEM
CAPACITY
(%)

Total
8
6
4
2
10
8
6*
4
2
12
10
8*
6
4
2*
12
10
8*
6
4
2*
12
10
8*
6
4
2*

100
75
50
25
100
79
58*
42
21
100
84
69*
48
32
16*
100
86
71*
43
29
14*
100
83
67*
50
33
17*

*Requires units with VAV (variable air volume) factory-supplied option.
NOTES:
1. Units have 2 independent refrigeration circuits. Circuit A is lead
circuit.

10.0

50

−28.9

−20

8.9

48

−28.9

−20

3.9

39

−28.9

−20

−0.6

31

−28.9

−20

−6.7

20

−28.9

−20

2. Minimum operating temperature is the higher outdoor temperature of
the 2 circuits.
3. Minimum outdoor-air operating temperature is based on 32 C (90 F)
saturated condensing temperature and 100% capacity.

MINIMUM OUTDOOR-AIR OPERATING TEMPERATURE AND UNLOADING SEQUENCES —
38AH044-084 SINGLE-CIRCUIT UNITS
UNIT
38AH

044

054

064

074

084

QUANTITY OF LOADED
CYLINDERS

SYSTEM
CAPACITY
(%)

8
6
4
2
10
8
6*
6
4
12
10
8*
6
4
2*
12
10
8*
6
4
2*
12
10
8*
6
4
2*

100
75
50
25
100
80
61*
56
37
100
82
64*
55
36
18*
100
81
62*
57
38
19*
100
83
67*
50
33
17*

*Requires VAV (variable air volume) factory-supplied option or
accessory unloader.

MINIMUM OUTDOOR OPERATING TEMP
w/Std Fans
w/Motormaster III Control
C
F
C
F
8.3

47

−28.9

−20

5.0

41

−28.9

−20

3.3

38

−28.9

−20

−5.6

22

−28.9

−20

−6.7

20

−28.9

−20

NOTE: Minimum outdoor-air operating temperature is based on 32 C
(90 F) saturated condensing temperature and 100% capacity.

95

Application data — 38AH044-134 (cont)
MINIMUM OUTDOOR-AIR OPERATING TEMPERATURE AND UNLOADING SEQUENCES —
38AH094-134 DUAL CIRCUIT UNITS
UNIT
38AH

094

104

124

134

QUANTITY OF LOADED COMPRESSOR
CYLINDERS
Ckt A

Ckt B

Total

SYSTEM
CAPACITY
(%)

10
10
10
10
8
6
4
10
10
10
10
10
10
10
8
6
4
2†
12
12
12
12
12
12
12
10
8
6
4
2*
12
12
12
12
12
12
12
10
8
6
4
2*

6
4
2*
0
0
0
0
12
10
8†
6
4
2†
0
0
0
0
0
12
10
8†
6
4
2†
0
0
0
0
0
0
12
10
8
6
4
2†
0
0
0
0
0
0

16
14
12
10
8
6
4
22
20
18
16
14
12
10
8
6
4
2
24
22
20
18
16
14
12
10
8
6
4
2
24
22
20
18
16
14
12
10
8
6
4
2

100
85
70*
55
44
33
22
100
91
82†
74
65
56†
47
38
26
17
9†
100
91
82*
77
68
59†
50
41
32*
27
18
9*
100
90
79*
76
66
56†
45
37
28*
25
16
8*

*Requires VAV (variable air volume) unit or accessory unloader(s) field
installed on circuit lead compressor. Lead compressor is identified in
Physical Data section, pages 47-50.
†Requires field-installed accessory unloader on circuit lead compressor.
Lead compressor is identified in Physical Data section, pages 47-50.

96

MINIMUM OUTDOOR OPERATING TEMP
W/Std Fans
w/MotormasterT III
Control
Ckt A
Ckt B
C
F
C
F
C
F

−13.9

7

−3.9

25

−28.9

−20

−10.0

14

−15.0

5

−28.9

−20

3.3

38

3.3

38

−28.9

−20

3.3

38

−5.6

22

−28.9

−20

NOTES:
1. Temperatures calculated with the minimum number of fans operating
per circuit.
2. For 38AH124 and 134 units, circuit A is Module 38AH124A or 134A.
Circuit B is Module 38AH124B or 134B.
3. Minimum outdoor-air operating temperature is based on 32 C (90 F)
saturated condensing temperature and 100% capacity.

REFRIGERANT PIPING REQUIREMENTS 38AH044-084 DUAL-CIRCUIT UNITS
UNIT
38AH
044
054
064
074
084

Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B

15-25
(4.6-7.6)
L
S
5 ⁄8
13⁄8
5 ⁄8
13⁄8
5 ⁄8
13⁄8
7 ⁄8
15⁄8
7 ⁄8
15⁄8
7 ⁄8
15⁄8
7 ⁄8
15⁄8
7 ⁄8
21⁄8
7 ⁄8
21⁄8
7 ⁄8
21⁄8

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
25-50
50-75
75-100
100-150
(7.6-15.2)
(15.2-22.9)
(22.9-30.5)
(30.5-45.7)
L
S
L
S
L
S
L
S
7 ⁄8
7⁄8
7⁄8
7 ⁄8
15⁄8
15⁄8
21⁄8
21⁄8
7 ⁄8
7⁄8
7⁄8
7 ⁄8
15⁄8
15⁄8
21⁄8
21⁄8
5
5
1
7 ⁄8
7
7
7
1 ⁄8
⁄8
1 ⁄8
⁄8
2 ⁄8
⁄8
21⁄8
7 ⁄8
7⁄8
7⁄8
15⁄8
21⁄8
21⁄8
11⁄8
21⁄8
7⁄8
7 ⁄8
7⁄8
15⁄8
21⁄8†
21⁄8†
11⁄8
21⁄8†
7 ⁄8
7⁄8
7⁄8
21⁄8
21⁄8
21⁄8
11⁄8
25⁄8*
7 ⁄8
7⁄8
7⁄8
21⁄8
21⁄8
21⁄8
11⁄8
25⁄8†
7 ⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8
11⁄8
25⁄8
7 ⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8†
11⁄8
25⁄8†
7 ⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8
11⁄8
25⁄8

LEGEND
L — Liquid Line
S — Suction Line
*Double suction riser required on units with field installed unloader on
circuit B compressor if condensing unit is elevated above
evaporator.
†Double suction riser required on units with field installed unloader on
circuit B compressor if condensing unit is elevated above
evaporator.
**Double suction riser required on all unit configurations if condensing
unit is elevated above evaporator.
NOTES:
1. Addition of 2 unloaders to circuit B compressor is not
recommended.
2. 38AH094 and 38AH104 piping sizes apply only to factory supplied
unit configurations. They do NOT take into account any field installed
unloaders.
3. Piping sizes are based on unit operation above 40 F (4.4 C) saturated suction temperature (SST). When operating below 40 F
(4.4 C), refer to Carrier System Design Manual, E20-IIT piping
design program, or ASHRAE Handbook to select proper line sizes.
4. Pipe sizes are based on the total linear length shown for each column, plus a 50% allowance for fittings.

150-200
(45.7-61.0)
L
S
7 ⁄8
21⁄8
7 ⁄8
21⁄8
7 ⁄8
21⁄8
11⁄8
25⁄8*†
11⁄8
25⁄8**
11⁄8
25⁄8*
11⁄8
25⁄8†
11⁄8
25⁄8
11⁄8
25⁄8†
11⁄8
25⁄8

5. Suction and liquid line sizing is based on pressure drop equivalent to
2 F (1.1 C) at nominal rating conditions. Higher pressure drop design
criteria may allow selection of smaller pipe sizes, but at a penalty of
decreased system capacity and efficiency.
6. Double suction risers may be required if condensing unit is
elevated above the evaporator. See footnotes and double suction
riser table below.
7. Refer to Carrier System Design Manual or to E20-II design
programs for further information on selecting pipe sizes for split systems.
8. All pipe sizes are OD inches. Equivalent sizes in millimeters
follow:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4

REFRIGERANT PIPING REQUIREMENTS FOR DOUBLE SUCTION RISERS,
38AH054-104 DUAL-CIRCUIT UNITS
UNIT
38AH
054
064
074
084

Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B

A
—
—
13⁄8
—
—
—
—
—

50-75
(15.2-22.9)
B
—
—
15⁄8
—
—
—
—
—

TOTAL LINEAR LENGTH
75-100
(22.9-30.5)
C
A
B
—
—
—
—
—
—
21⁄8
13⁄8
15⁄8
—
—
—
—
—
—
—
—
—
—
15⁄8
21⁄8
—
—
—

LEGEND
—
— Not Required
Pipe A — Suction Riser Without Trap
Pipe B — Suction Riser With Trap
Pipe C — Suction Line to Condensing Unit
NOTES:
1. See Refrigerant Piping Requirements table at top of page to
determine need for double suction risers.
2. Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for fittings.
3. Suction and liquid line sizing is based on pressure drop equivalent to
2 F (1.1 C) at nominal rating conditions. Higher design pressure drop
criteria may allow selection of smaller pipe sizes but at a penalty of
decreased system capacity and efficiency.

OF INTERCONNECTING PIPE — FT (M)
100-150
(30.5-45.7)
C
A
B
C
A
—
—
—
—
—
—
—
—
—
15⁄8
21⁄8
15⁄8
15⁄8
21⁄8
15⁄8
—
15⁄8
21⁄8
25⁄8
15⁄8
—
15⁄8
21⁄8
25⁄8
15⁄8
—
—
—
—
—
25⁄8
15⁄8
21⁄8
25⁄8
15⁄8
—
—
—
—
—

150-200
(45.7-61.0)
B
—
21⁄8
21⁄8
21⁄8
21⁄8
—
21⁄8
—

C
—
25⁄8
25⁄8
25⁄8
25⁄8
—
25⁄8
—

4. Refer to Carrier System Design Manual or to E20-II design programs
for further information on selecting pipe sizes for split systems.
5. All pipe sizes are OD inches. Equivalent sizes in millimeters follows:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4

97

Application data — 38AH044-134 (cont)
38AH044-084 OPTIONAL SINGLE-CIRCUIT UNITS; 38AH124,134
MODULAR UNITS (DUAL-CIRCUIT)
UNIT
38AH

15-20
(4.6-6.1)
L
S
7⁄8
21⁄8
7⁄8
21⁄8

044
054
064;
Modules 124A,
124B, 134A
074;
Module 134B
084

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
20-50
50-75
75-100
100-150
(6.1-15.2)
(15.2-22.9)
(22.9-30.5)
(30.5-45.7)
L
S
L
S
L
S
L
S
7⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8*
11⁄8
25⁄8*
11⁄8
21⁄8
11⁄8
25⁄8*
11⁄8
25⁄8*
11⁄8
25⁄8*

150-200
(45.7-61.0)
L
S
13⁄8
25⁄8*
13⁄8
31⁄8*

78

⁄

21⁄8

11⁄8

25⁄8†

11⁄8

25⁄8†

11⁄8

78

⁄

21⁄8

11⁄8

25⁄8†

11⁄8

25⁄8†

13⁄8

11⁄8

21⁄8

11⁄8

25⁄8†

13⁄8

31⁄8*

13⁄8

LEGEND
CV — Constant Volume
L
— Liquid Line
S
— Suction Line
VAV — Variable Air Volume
*Double suction riser required on all units configurations if condensing
unit is elevated above evaporator.
†Double suction riser required on units with factory installed VAV option
or CV units with additional field installed unloader on circuit A1 (lead)
compressor if condensing unit is elevated above evaporator.
NOTES:
1. Double risers are required if condensing unit is elevated above evaporator. See footnotes and double suction riser table below.
2. Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for fittings.
3. Suction line sizing is based on 1.1 C (2 F) pressure drop at nominal
rating conditions. Liquid line sizing is based on 1.1 C (2 F) pressure
drop. Higher design pressure drop criteria may allow selection of
smaller pipe sizes but at a penalty of decreased system capacity and
efficiency.

25⁄8†

13⁄8

31⁄8*

13⁄8

31⁄8*

31⁄8*

13⁄8

31⁄8*

13⁄8

31⁄8*

31⁄8*

13⁄8

31⁄8*

15⁄8

35⁄8*

4. Suction line sizing is based on using the same diameter tube from
the evaporator riser outlet to the condensing unit.
5. Suction line riser selections are based on using maximum possible
unloaders.
6. Refer to Carrier System Design Manual or to E20-IIT design programs for further information on selecting pipe sizes for split systems.
7. All pipe sizes are OD inches; equivalent sizes in millimeters follow:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8
35⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4
92.1

38AH044-084 OPTIONAL SINGLE-CIRCUIT UNITS; 38AH124,134
MODULAR UNITS (DUAL-CIRCUIT) —
DOUBLE SUCTION RISER
UNIT
38AH
044
054
064;
Modules 124A,
124B, 134A
074;
Module 134B
084

—
Pipe A
Pipe B
Pipe C

—
—
—
—

15-20
(4.6-6.1)
A
B
C
—
—
—
—
—
—

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
20-50
50-75
75-100
100-150
(6.1-15.2)
(15.2-22.9)
(22.9-30.5)
(30.5-45.7)
A
B
C
A
B
C
A
B
C
A
B
C
—
—
—
—
—
—
15⁄8
21⁄8
25⁄8
15⁄8
25⁄8
25⁄8
—
—
—
15⁄8
21⁄8
25⁄8
15⁄8
21⁄8
25⁄8
15⁄8
21⁄8
25⁄8

150-200
(45.7-61.0)
A
B
C
15⁄8
25⁄8
25⁄8
15⁄8
25⁄8
31⁄8

—

—

—

15⁄8

21⁄8

25⁄8

15⁄8

21⁄8

25⁄8

15⁄8

21⁄8

25⁄8

15⁄8

25⁄8

31⁄8

15⁄8

25⁄8

31⁄8

—

—

—

15⁄8

21⁄8

25⁄8

15⁄8

21⁄8

25⁄8

15⁄8

25⁄8

31⁄8

15⁄8

25⁄8

31⁄8

15⁄8

31⁄8

35⁄8

—

—

—

15⁄8

21⁄8

25⁄8

15⁄8

25⁄8

31⁄8

15⁄8

25⁄8

31⁄8

15⁄8

25⁄8

31⁄8

15⁄8

31⁄8

35⁄8

LEGEND
Not Required
Suction Riser Without Trap
Suction Riser With Trap
Suction Line to Condensing Unit

NOTES:
1. See Refrigerant Piping Requirements table at top of page to determine need for double suction risers.
2. Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for fittings.
3. Suction line sizing is based on 1.1 C (2 F) pressure drop at nominal
rating conditions. Liquid line sizing is based on 1.1 C (2 F) pressure
drop. Higher design pressure drop criteria may allow selection of
smaller pipe sizes but at a penalty of decreased system capacity and
efficiency.
4. Suction line sizing is based on using the same diameter tube from
the evaporator riser outlet to the condensing unit.

98

5. Suction line riser selections are based on using maximum possible
unloaders.
6. Refer to Carrier System Design Manual or to E20-II design programs
for further information on selecting pipe sizes for split systems.
7. All pipe sizes are OD inches; equivalent sizes in millimeters follow:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8
35⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4
92.1

REFRIGERANT PIPING REQUIREMENTS 38AH094,104
DUAL-CIRCUIT UNITS
UNIT
38AH
Ckt A
Ckt B
Ckt A
Ckt B

094
104

15-25
(4.6-7.6)
L
S
7⁄8
21⁄8
7⁄8
21⁄8
7⁄8
21⁄8
7⁄8
21⁄8

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE - FT (M)
25-50
50-75
75-100
100-150
(7.6-15.2)
(15.2-22.9)
(22.9-30.5)
(30.5-45.7)
L
S
L
S
L
S
L
S
11⁄8
21⁄8
11⁄8
25⁄8**
11⁄8
25⁄8**
11⁄8
25⁄8**
7⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8*†
11⁄8
25⁄8*†
7⁄8
21⁄8
11⁄8
21⁄8
11⁄8
25⁄8**
11⁄8
25⁄8**
11⁄8
21⁄8
11⁄8
25⁄8
11⁄8
25⁄8
13⁄8
25⁄8

LEGEND
L — Liquid Line
S — Suction Line
*Double suction riser required on units with field installed unloader on
circuit B compressor if condensing unit is elevated above
evaporator.
†Double suction riser required on units with field installed unloader on
circuit B compressor if condensing unit is elevated above
evaporator.
**Double suction riser required on all unit configurations if condensing
unit is elevated above evaporator.
NOTES:
1. Double risers are required if condensing unit is elevated above evaporator. See footnotes and double suction riser table below.
2. Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for fittings.
3. Suction line sizing is based on 1.1 C (2 F) pressure drop at nominal
rating conditions. Liquid line sizing is based on 1.1 C (2 F) pressure
drop. Higher design pressure drop criteria may allow selection of
smaller pipe sizes but at a penalty of decreased system capacity and
efficiency.

150-200
(45.7-61.0)
L
S
13⁄8
31⁄8**
11⁄8
25⁄8*†
13⁄8
31⁄8**
13⁄8
31⁄8**

4. Suction line sizing is based on using the same diameter tube from
the evaporator riser outlet to the condensing unit.
5. Suction line riser selections are based on using maximum possible
unloaders.
6. Refer to Carrier System Design Manual or to E20-II design programs
for further information on selecting pipe sizes for split systems.
7. All pipe sizes are OD inches; equivalent sizes in millimeters follow:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8
35⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4
92.1

38AH094,104 DUAL-CIRCUIT UNITS, DOUBLE SUCTION RISER
UNIT
38AH
Ckt A
Ckt B
Ckt A
Ckt B

094
104

—
Pipe A
Pipe B
Pipe C

—
—
—
—

A
13⁄8
—
—
—

50-75
(15.2-22.9)
B
21⁄8
—
—
—

TOTAL LINEAR LENGTH
75-100
(22.9-30.5)
C
A
B
25⁄8
13⁄8
21⁄8
—
13⁄8
21⁄8
21⁄8
—
13⁄8
—
—
—

LEGEND
Not Required
Suction Riser Without Trap
Suction Riser With Trap
Suction Line to Condensing Unit

NOTES:
1. See Refrigerant Piping Requirements table at top of page to determine need for double suction risers.
2. Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for fittings.
3. Suction line sizing is based on 1.1 C (2 F) pressure drop at nominal
rating conditions. Liquid line sizing is based on 1.1 C (2 F) pressure
drop. Higher design pressure drop criteria may allow selection of
smaller pipe sizes but at a penalty of decreased system capacity and
efficiency.
4. Suction line sizing is based on using the same diameter tube from
the evaporator riser outlet to the condensing unit.

OF INTERCONNECTING PIPE — FT (M)
100-150
(30.5-45.7)
C
A
B
C
A
25⁄8
15⁄8
21⁄8
25⁄8
15⁄8
25⁄8
15⁄8
21⁄8
25⁄8
15⁄8
25⁄8
15⁄8
21⁄8
25⁄8
15⁄8
—
—
—
—
15⁄8

150-200
(45.7-61.0)
B
25⁄8
21⁄8
25⁄8
25⁄8

C
31⁄8
25⁄8
31⁄8
31⁄8

5. Suction line riser selections are based on using maximum possible
unloaders.
6. Refer to Carrier System Design Manual or to E20-II design programs
for further information on selecting pipe sizes for split systems.
7. All pipe sizes are OD inches; equivalent sizes in millimeters follow:
in.
5⁄8
7⁄8
11⁄8
13⁄8
15⁄8
21⁄8
25⁄8
31⁄8
35⁄8

mm
15.9
22.2
28.6
34.9
41.3
54.0
66.7
79.4
92.1

99

Application data — 38AH044-134 (cont)
REFRIGERANT PIPING REQUIREMENTS
DOUBLE SUCTION RISER CONSTRUCTION

A
B
C
D
RED.
STR

—
—
—
—
—
—

LEGEND
Pipe A, Suction Riser, Lower Trap
Pipe B, Suction Riser with Trap
Suction Line to Condensing Unit
Pipe D, Suction Riser Short Lift
Reducer
Street

NOTE: Short riser, pipe D, is used when routing suction line to condensing unit connection. See table below:
UNIT
38AH
044
054
064
074
084
094
104
124A,B
134A,B

PIPE D DIAMETER*
Dual Circuit
Single Circuit
A
B
5
5
1 ⁄8
21⁄8
1 ⁄8
15⁄8
15⁄8
21⁄8
15⁄8
21⁄8
21⁄8
21⁄8
21⁄8
21⁄8
21⁄8
21⁄8
25⁄8
21⁄8
21⁄8
—
21⁄8
21⁄8
—
1
1
2 ⁄8
—
2 ⁄8
1
1
2 ⁄8
2 ⁄8
—

*Maximum length of riser is 3 ft (914 mm).

100

Guide specifications — 38AH024-034
Commercial Air-Cooled Condensing Units
HVAC Guide Specifications
Size Range: 63 to 87 kW (18 to 25 Tons), Nominal
Carrier Model Number: 38AH
Part 1 — General
1.01 SYSTEM DESCRIPTION
Outdoor-mounted, air-cooled condensing unit suitable for on-the-ground or rooftop installation. Unit
shall have 2 independent refrigeration circuits and shall
consist of dual semi-hermetic reciprocating compressors, air-cooled coils, propeller-type condenser fans,
and a control box. Unit shall discharge supply air upward as shown on contract drawings. Unit shall be
used in refrigeration circuit matched with a packaged
fan-coil unit or direct-expansion cooler.
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standard
365, latest edition (U.S.A. standard).
B. Unit construction shall comply with latest edition of
ANSI/ASHRAE and with NEC (U.S.A. standard).
C. Unit shall be manufactured in a facility registered to
ISO (International Standards Organization) 9002 manufacturing quality standard.
D. Unit shall be constructed in accordance with UL standards (U.S.A.).
E. Unit cabinet shall be capable of withstanding
500-hour salt-spray exposure per ASTM B117 (U.S.A)
(scribed specimen).
F. Air-cooled condenser coils shall be leak tested at
1034 kPa (150 psig) and pressure tested at 3310 kPa
(480 psig).
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be shipped as single package only, and
shall be stored and handled per unit manufacturer’s
recommendations.
1.04 WARRANTY
For inclusion by specifying engineer.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Factory assembled, single-piece, air-cooled condensing unit. Contained within the unit enclosure shall be
all factory wiring, piping, controls, compressors, holding charge, and special features required prior to field
start-up.

B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with a prepainted, baked
enamel finish.
2. Unit access panels shall be hinged for control box
service access.
3. Lifting holes shall be provided to facilitate rigging.
C. Fans:
1. Condenser fans shall be direct-drive propeller type,
discharging air vertically upward.
2. Condenser fan motors shall be 3-phase type
with class B insulation and permanently lubricated
bearings. Class F fan motors shall be available as
a factory-installed option.
3. Shafts shall have inherent corrosion resistance.
4. Fan blades shall be statically and dynamically
balanced.
5. Condenser fan openings shall be equipped with
PVC-coated steel wire safety guards.
D. Compressors:
1. Compressors shall be manufactured by the condensing unit manufacturer, and shall be serviceable, reciprocating, semi-hermetic type.
2. Compressors shall be equipped with an automatically reversible oil pump, operating oil charge,
suction and discharge shutoff valves, and an inserttype factory-sized crankcase heater to control oil
dilution.
3. Compressors shall be mounted on spring vibration isolators with an isolation efficiency of no less
than 95%.
4. Compressor speed shall not exceed 24.3 r/s
(1460 rpm).
5. Lead compressor shall unload using suction cutoff
unloading (electrical solenoid unloading shall be
available as an accessory).
E. Condenser Coils:
1. Condenser coils shall be air cooled, circuited for
integral subcooler.
2. Coil shall be constructed of aluminum fins mechanically bonded to internally grooved, seamless
copper tubes which are then cleaned, dehydrated,
and sealed. Copper fins and precoated aluminum
fins shall be available as options.
F. Refrigeration Components:
Refrigeration circuit components shall include hot gas
muffler, high-side pressure relief device, liquid line shutoff valve, suction and discharge shutoff valves, holding charge, and compressor oil.

101

Guide specifications — 38AH024-034 (cont)
G. Controls and Safeties:
1. Minimum control functions shall include:
a. Power and control terminal blocks.
b. Five-minute Time Guardt protection to prevent compressor short-cycling.
c. Lockout on auto-reset safety until reset from
thermostat.
d. Capacity control on the lead compressor shall
be by suction cutoff unloaders in response
to compressor suction pressure. Electric
solenoid unloading shall be available as an
accessory.
e. Head pressure control for mild ambient temperature operation by fan cycling. One condenser fan shall be cycled by ambient temperature to maintain proper head pressure.
2. Minimum safety devices shall include:
Automatic reset (after resetting first at thermostat)
a. High discharge-temperature cutout.
b. Low suction-pressure cutout.
c. Condenser fan motors to be protected against
overloads or single-phase condition by internal overloads.
d. Low oil-pressure cutout.
Manual reset at the unit
a. Electrical overload protection through the use
of definite-purpose contactors and calibrated,
ambient compensated, magnetic trip circuit
breakers. Circuit breakers shall open all 3
phases in the event of an overload in any one
of the phases or a single-phase condition.
b. High discharge-pressure cutout.
H. Operating Characteristics:
1. The capacity of the condensing unit shall meet or
at a suction temperature of
exceed
. The power consumption at full load
shall not exceed
kW.
2. The combination of the condensing unit and the
evaporator or fan coil unit shall have a total net
cooling capacity of
or greater at an
, entering-air temairflow rate of
perature at the evaporator at
wet
bulb and
dry bulb, and air entering
the condensing unit at
.
3. The system shall have an EER of
or greater at standard ARI conditions.

102

I. Electrical Requirements:
1. Nominal unit electrical characteristics shall be
v, 3-ph, 50 Hz. The unit shall be capable
of satisfactory operation within voltage limits of
v to
v.
2. Unit electrical power shall be single point
connection.
3. Unit control circuit shall be 230 v for 380/415 v
and 230 v units, or 200 v for 346 v units.
J. Special Features:
Certain standard features are not applicable when the
features designated * are specified. For assistance in
amending the specifications, your local Carrier Sales
Office should be contacted.
*
1. Unloader Conversion Kit:
Unloader valve, piston, and hardware shall be
supplied to convert any pressure-operated compressor unloader to electrical unloading.
Accessory ModuPanel™ or field-supplied step controller shall be provided for electrical unloading.
*
2. Gage Panel:
A gage panel package shall be provided which
includes a suction and discharge pressure gage
for each refrigerant circuit.
3. Thermostat Controls:
a. Debonair™ programmable multi-stage thermostat with 7-day clock, holiday scheduling,
large Thermoglow™ display, remote sensor
capability, and Title 24 compliance.
b. TEMP System programmable communicating multi-stage thermostat with fan switch,
timeclock, LCD display, °F/°C capability,
and CCN (Carrier Comfort Network)
compatibility.
c. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
d. Non-programmable thermostat with fan switch
subbase.
4. Electric Unloader Package:
Electric unloader shall provide an additional step
of electric unloading.
5. Pressure Unloader Package:
Pressure unloader shall provide an additional step
of pressure unloading.

*

*

*

6. ModuPanel™ Control:
Control shall provide 10-step microprocessorbased control for variable air volume
applications.
7. Motormastert III Control:
Control shall maintain correct condensing pressure at low ambient temperatures.
8. VAV (Variable Air Volume) Modification:
Unit shall be supplied from the factory with necessary wiring modifications for connection to a
field-supplied ModuPanel discharge air controller. The VAV modification shall include 2 electric
unloaders on the lead compressor.
9. Optional Condenser Coil Materials:
a. Pre-Coated Aluminum-Fin Coils:
Shall have a durable epoxy-phenolic coating
to provide protection in mildly corrosive coastal
environments. Coating shall be applied to the
aluminum fin stock prior to the fin stamping
process to create an inert barrier between the
aluminum fin and copper tube. Epoxy-phenolic
barrier shall minimize galvanic action between
dissimilar metals.
b. Copper-Fin Coils:
Shall be constructed of copper fins mechanically bonded to copper tubes. All copper
construction shall provide protection in moderate coastal applications.

c. Post-Coated Aluminum-Fin Coils:
Shall have a durable organic coating uniformly
applied over all coil surfaces. Coating shall
be deep brown color applied by a dip and
bake process to ensure complete encapsulation of all coil surfaces. Coated coil shall withstand 1,000-hour salt spray test in accordance
with ASTM B117. Coil construction shall be
aluminum fins mechanically bonded to copper tubes.
d. Post-Coated Copper-Fin Coils:
Shall have a durable organic coating uniformly
applied over all coil surfaces. Coating shall
be deep brown color applied by a dip and
bake process to ensure complete encapsulation of all coil surfaces. Coated coil shall withstand 1,000-hour salt spray test in accordance
with ASTM B117. Coil construction shall be
copper fins mechanically bonded to copper
tubes.
10. Class F Motors:
Shall provide additional motor insulation for highambient temperature environments.

103

Guide specifications — 40RM
Commercial Packaged Air-Handling Unit
HVAC Guide Specifications
Size Range: 2831 to 5663 L/s (6000 to 12,000 Cfm),
Nominal Airflow
52 to 105 kW (15 to 30 Tons),
Nominal Cooling
Carrier Model Number: 40RM
Part 1 — General
1.01 SYSTEM DESCRIPTION
A. Indoor, packaged air-handling unit for use in commercial split systems. Unit shall have a multiposition
design and shall be capable of horizontal or vertical
(upflow) installation on a floor or in a ceiling, with or
without ductwork. (Only vertical units are to be
applied without ductwork).
B. Unit shall be used in a refrigerant circuit with a matching air-cooled condensing unit.
1.02 QUALITY ASSURANCE
A. Coils shall be designed and tested in accordance with
ASHRAE 15 Safety Code for Mechanical Refrigeration (U.S.A.), latest edition.
B. Unit shall be constructed in accordance with ETL
(U.S.A.) and ETL, Canada standards.
C. Unit insulation and adhesive shall comply with NFPA
90A (U.S.A.) requirements for flame spread and smoke
generation. Insulation shall contain a U.S.A. EPAregistered immobilized antimicrobial agent to effectively resist the growth of bacteria and fungi as proven
by tests in accordance with ASTM standards G21 and
22 (U.S.A.).
D. Unit shall be manufactured in a facility registered to
the ISO 9002/BS5750, Part 2 manufacturing quality standard.
E. Direct-expansion coils shall be burst tested at
2999 kPag (435 psig) and leak tested at 1034 kPag
(150 psig).
1.03 DELIVERY AND STORAGE
Units shall be stored and handled per manufacturer’s
recommendations.
Part 2 — Products
2.01 EQUIPMENT
Indoor mounted, draw-thru, packaged air-handling
unit that can be used in a suspended horizontal configuration or vertical (upflow) configuration. Unit shall
consist of forward-curved belt-driven centrifugal fan(s),
motor and drive assembly, prewired fan motor contactor, factory-installed refrigerant metering devices,
cooling coil, 51 mm (2-in.) disposable air filters, and
condensate drain pans for vertical or horizontal
configurations.

104

A. Base Unit:
1. Cabinet shall be constructed of mill-galvanized steel.
2. Cabinet panels shall be fully insulated with
12.7-mm (1⁄2-in.) fire-retardant material. Insulation shall contain a U.S.A. EPA-registered immobilized antimicrobial agent to effectively resist the
growth of bacteria and fungi as proven by tests in
accordance with ASTM standards G21 and 22
(U.S.A.).
3. Unit shall contain PVC condensate drain pans for
both vertical and horizontal applications. Drain
pans shall have connections on right and left sides
of unit to facilitate field connection. Drain pans
shall have the ability to be sloped toward the right
or left side of the unit to prevent standing water
from accumulating in pans.
4. Unit shall have factory-supplied 51-mm (2-in.)
throwaway-type filters installed upstream from the
cooling coil. Filter access shall be from either the
right or left side of the unit.
B. Coils:
Coils shall consist of 3 rows of copper tubes with sinewave aluminum fins bonded to the tubes by mechanical expansion. Coil tubing shall be internally rifled to
maximize heat transfer. Suction and liquid line connections or supply and discharge connections shall be
made on the same side of the coil.
Direct-expansion coils shall feature factory-installed
thermostatic expansion valves (TXVs) for refrigerant
control. The TXVs shall be capable of external
adjustment.
C. Operating Characteristics:
L/s (cfm)
Unit shall be capable of providing
airflow at an external static pressure of
kPag
(in. wg).
D. Motor:
Fan motor of the size and electrical characteristics
specified on the equipment schedule shall be factory
supplied and installed.
E. Factory-Installed Options:
1. Alternate Motor and Drive:
An alternate motor and/or medium- or high-static
drive shall be available to meet the airflow and external static pressure requirements specified on the
equipment schedule.
2. Painted Cabinet:
Where conditions require, units shall be painted
with an American Sterling Gray finish.

F. Field-Installed Accessories:
1. Hot Water Coil:
Coil shall be 2-row, U-bend coil with copper
tubes and aluminum plate fans bonded to the
tubes by mechanical expansion. Coil shall be
mounted in a galvanized steel housing that shall
be fastened to the unit’s fan deck for blow-thru
heating operation. Coil shall have maximum working pressure of 1034 kPag (150 psig).
2. Steam Distributing Coil:
Coil shall consist of 1 row of copper tubes with
aluminum plate fins, and shall have inner steam
distributing tubes. Coil shall be mounted in a galvanized steel housing that shall be fastened to the
unit’s fan deck for blow-thru heating operation.
Coil shall have maximum working pressure of
1207 kPag at 204.4 C (175 psig at 400 F).
3. Electric Heaters:
Heaters for nominal 230 or 400-volt, 3-phase
power supply shall be factory-supplied for field
installation as shown on the equipment drawings. Electric heat assembly shall be ETL (U.S.A.)
and ETL, Canada agency approved, and shall
have single-point power wiring. Heater assembly shall include contactors with 24-v coils, power
wiring, 24-v control wiring terminal blocks, and
a hinged access panel. Electric heaters shall not
be used with discharge plenum.
4. Air Discharge Plenum:
Plenum shall be provided to provide free-blow air
distribution for vertical floor-mounted units. A
grille with moveable vanes for horizontal or vertical airflow adjustment shall be included. Plenum
shall be field-assembled and field-installed on the
unit’s fan deck for blow-thru air distribution. Plenum shall not be used with electric heaters.
5. Return-Air Grille:
Grille shall be factory supplied for field installation on the unit’s return air opening.
6. Unit Subbase:
Subbase assembly shall be factory supplied for
field installation. Subbase shall elevate floormounted vertical units to provide access for correct condensate drain connection.

7. Economizer:
Economizer for ventilation or ‘‘free’’ cooling shall
be factory provided for field installation. For free
cooling applications, economizer shall be compatible with factory-supplied thermostat; economizer dampers shall open when outdoor air enthalpy is suitable for free cooling. Economizer shall
be compatible with separate CO2 sensor accessory; economizer dampers shall open when indoor CO2 level rises above predetermined set
point. Economizer shall include enthalpy control
and damper actuator with controls.
8. Thermostat Controls:
a. Debonair™ programmable multi-stage thermostat with 7-day clock, holiday scheduling,
large Thermoglow™ display, remote sensor
capability, and Title 24 compliance.
b. TEMP System programmable communicating multi-stage thermostat with fan
switch, timeclock, LCD display, °F/°C capability, and CCN (Carrier Comfort Network)
compatibility.
c. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
d. Non-programmable thermostat with fan switch
subbase.
9. Overhead Suspension Brackets:
Package shall include necessary brackets to support units in a horizontal ceiling installation.
10. CO2 Sensor:
Sensor shall provide the ability to signal the economizer to open when the space CO2 level exceeds
the predetermined set point. Sensor shall have
the capability of being connected to comfort system relay pack or to economizer using fieldsupplied and installed Honeywell dc adapter no.
Q769C1004.
11. Condensate Drain Trap:
Trap shall have transparent, serviceable design
for easy cleaning. Kit shall include overflow shutoff switch and wiring harness for connection to
an alarm if desired.

105

Guide specifications — 38AH044-134
Commercial Air-Cooled Condensing Units
HVAC Guide Specifications
Size Range: 123 to 390 kW (35 to 111 Tons),
Nominal
Carrier Model Number: 38AH
Part 1 — General
1.01 SYSTEM DESCRIPTION
Outdoor-mounted, air-cooled condensing unit suitable for on-the-ground or rooftop installation. Unit
shall have 2 independent refrigeration circuits and shall
consist of 2, 3, or 4 semi-hermetic reciprocating compressors, air-cooled coils, propeller-type condenser
fans, and a control box. Unit shall discharge supply
air upward as shown on contract drawings. Unit shall
be used in refrigeration circuit matched with a packaged air-handling unit or direct-expansion coils.
1.02 QUALITY ASSURANCE
A. Unit performance shall be rated in accordance with
ARI Standard 365 (U.S.A.), latest edition.
B. Unit construction shall comply with latest edition of
ASHRAE and (U.S.A. Standards) NEC.
C. Unit shall be manufactured in a facility registered to
ISO 9002 manufacturing quality standard.
D. Unit cabinet shall be capable of withstanding
500-hour salt-spray exposure per ASTM B117 (U.S.A.)
(scribed specimen).
E. Air-cooled condenser coils shall be leak tested at
1034 kPa (150 psig) and pressure tested at 3310 kPa
(450 psig).
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be shipped as single package or 2-container
package, and shall be stored and handled per unit
manufacturer’s recommendations.
1.04 WARRANTY
For inclusion by specifying engineer.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Factory assembled, single-piece or 2-piece, air-cooled
condensing unit. Contained within the unit enclosure
shall be all factory wiring, piping, controls, compressors, holding charge (R-22), and special features required prior to field start-up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized, and coated with a prepainted, baked
enamel finish.
2. Unit access panels shall be hinged for control box
service access.
3. Lifting holes shall be provided to facilitate rigging.

106

C. Fans:
1. Condenser fans shall be direct-drive propeller type,
discharging air vertically upward.
2. Condenser fan motors shall be 3-phase type
with class B insulation and permanently lubricated
bearings. Motors shall be drip proof with sealed
bearings. Class F fan motors shall be available as
a factory-installed option.
3. Shafts shall have inherent corrosion resistance.
4. Fan blades shall be statically and dynamically
balanced.
5. Condenser-fan openings shall be equipped with
PVC-coated steel wire safety guards.
D. Compressors:
1. Compressors shall be manufactured by the condensing unit manufacturer, and shall be serviceable, reciprocating, semi-hermetic type.
2. Compressors shall be equipped with an automatically reversible oil pump, operating oil charge,
suction and discharge shutoff valves, and an inserttype factory-sized crankcase heater to control oil
dilution.
3. Compressors shall be mounted on spring vibration isolators with an isolation efficiency of no less
than 95%.
4. Compressor speed shall not exceed 24.3 r/s
(1460 rpm).
5. Lead compressors on each circuit shall unload using suction cutoff unloading (electric solenoid unloading shall be available as an accessory).
E. Condenser Coils:
1. Condenser coils shall be air cooled and circuited
for integral subcooler.
2. Coil shall be constructed of aluminum fins mechanically bonded to internally grooved, seamless
copper tubes which are then cleaned, dehydrated,
and sealed. Copper fins and precoated aluminum
fins shall be available as options.
F. Refrigeration Components:
Refrigeration circuit components shall include hot gas
muffler, suction line accumulator, hot gas bypass stub
tubes, high-side pressure relief device, liquid line shutoff valve, suction and discharge shutoff valves, holding charge of refrigerant R-22, and compressor oil.
38AH094-134 and all 38AH044-084 single-circuit
units shall have suction line accumulators. The VAV
units shall also have suction line accumulators.

G. Controls and Safeties:
1. Minimum control functions shall include:
a. Power and control terminal blocks.
b. Five-minute time delay protection to prevent
compressor short-cycling.
c. Lockout on auto-reset safety until reset from
thermostat.
d. Capacity control on the lead compressor shall
be by suction cutoff unloaders in response
to compressor suction pressure. Electric
solenoid unloading shall be available as an
accessory.
e. Head pressure control for mild ambient temperature operation through fan cycling. Condenser fans (except fans 1 and 2) shall be
cycled by discharge pressure to maintain proper
head pressure.
f. Winter start control to prevent nuisance tripouts at low ambient temperatures.
2. Minimum safety devices shall include:
Automatic reset (after resetting first at
thermostat)
a. Low suction pressure cutout.
b. Condenser-fan motors protected against overloads or single-phase condition by internal
overloads.
c. Low oil pressure cutout.
Manual reset at the unit
a. Electrical overload protection through the use
of definite-purpose contactors and calibrated,
ambient compensated, magnetic trip circuit
breakers. Circuit breakers shall open all 3
phases in the event of an overload in any one
of the phases or a single-phase condition.
b. High discharge-pressure cutout.
H. Operating Characteristics:
1. The capacity of the condensing unit shall meet
at a suction temperature of
or exceed
. The power consumption at full load shall
not exceed
kW.
2. The combination of the condensing unit and the
evaporator or air handling unit shall have a total
net cooling capacity of
or greater at conentering-air temperature at the
ditions of
evaporator at
wet bulb and
dry bulb,
and air entering the condensing unit at
.
3. The system shall have an Energy Efficiency Ratio
(EER) of
or greater at standard ARI
conditions.

I. Electrical Requirements:
1. Nominal unit electrical characteristics shall be
v, 3-ph, 50 Hz. The unit shall be capable
of satisfactory operation within voltage limits of
v to
v.
2. Unit or module electrical power shall be singlepoint connection.
3. Unit control circuit shall be 230 v for 230 and
380/415 v units, and 200 v for 346 v units.
J. Special Features:
1. Unloader Conversion Kit:
Unloader valve, piston, and hardware shall be
supplied to convert any pressure-operated compressor unloader to electrical unloading. Accessory ModuPanel™ control or field-supplied step
controller shall be required for electrical unloading.
2. Gage Panel:
A gage panel package shall be provided which
includes a suction and discharge pressure gage
for each refrigerant circuit.
3. Accessory Transformer Relay Package:
Relay shall be provided for use with a remotecontrol 24-v thermostat.
4. Electric Unloader Package:
Electric unloader shall provide an additional step
of electric unloading.
5. Pressure Unloader Package:
Pressure unloader shall provide an additional step
of pressure unloading.
6. ModuPanel Control:
Indoor mounted control shall provide 10-step
microprocessor-based control for variable air
volume (VAV) applications.
7. Low-Ambient Motormastert III Control:
Control shall maintain correct condensing pressure at low ambient temperatures.
8. Optional Condenser Coil Materials:
a. Pre-Coated Aluminum-Fin Coils:
Shall have a durable epoxy-phenolic coating
to provide protection in mildly corrosive coastal
environments. Coating shall be applied to the
aluminum fin stock prior to the fin stamping
process to create an inert barrier between the
aluminum fin and copper tube. Epoxy-phenolic
barrier shall minimize galvanic action between
dissimilar metals.
b. Copper-Fin Coils:
Shall be constructed of copper fins mechanically bonded to copper tubes. All copper
construction shall provide protection in moderate coastal applications.

107

Guide specifications — 38AH044-134 (cont)
c. Post-Coated Aluminum-Fin Coils:
Shall have a durable organic coating uniformly
applied over all coil surfaces. Coating shall
be deep brown color applied by a dip and
bake process to ensure complete encapsulation of all coil surfaces. Coated coil shall withstand 1,000-hour salt spray test in accordance
with ASTM (U.S.A.) B117. Coil construction
shall be aluminum fins mechanically bonded
to copper tubes.
d. Post-Coated Copper-Fin Coils:
Shall have a durable organic coating uniformly
applied over all coil surfaces. Coating shall
be deep brown color applied by a dip and
bake process to ensure complete encapsulation of all coil surfaces. Coated coil shall withstand 1,000-hour salt spray test in accordance
with ASTM (U.S.A.) B117. Coil construction
shall be copper fins mechanically bonded to
copper tubes.
9. Thermostat Controls:
a. Debonair™ programmable multi-stage thermostat with 7-day clock, holiday scheduling,
large Thermoglow™ display, remote sensor
capability, and Title 24 compliance.
b. TEMP System programmable communicating multi-stage thermostat with fan
switch, timeclock, LCD display, °F/°C capability, and CCN (Carrier Comfort Network)
compatibility.
c. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
d. Non-programmable thermostat with fan switch
subbase.

Carrier Corporation • Syracuse, New York 13221

10. Hail Guard:
Unit shall be equipped with louvered condenser coil hail guard protection and installation
hardware.
11. Security Grilles:
A set of PVC-coated metal grilles complete with
support retainers and fasteners shall be provided
for the protection of the condensing coils, compressors, or both.
12. Sound Reduction Package Kit:
This field-installed accessory kit shall consist of a
specially designed fan system containing fans and
orifices for reducing system noise without compromising unit performance. No fan motor change
shall be required for accessory installation.
13. VAV Control Box:
Modification shall include electric unloaders on
compressors (1 for 38AH044; 2 for 38AH054084 and 104; 3 for 38AH094; and 4 for
38AH124,134) to make condensing unit compatible with ModuPanel™ VAV controller. Unit
shall include factory-installed accumulator.
14. Single-Circuit Modification (sizes 044-084 only)
Modification shall include all piping and wiring
to make unit single circuit. Unit shall include
factory-installed accumulator.
15. Single-Circuit Modification with VAV:
Modification shall include piping, wiring, and electric unloaders on compressors (one on 38AH044
and 2 on 38AH054-084) to make unit single circuit, VAV ready.
16. Class F Motors:
Shall provide additional motor insulation for highambient temperature environments.

11-98

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 2
Tab 3a 1a

Page 108

Catalog No. 003-829

Printed in U.S.A.

Printed in U.S.A.

Form 38AH-C4PD
Replaces: 38AH-C3PD



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