48hc 03pd1 48EW 03PD

User Manual: 48EW

Open the PDF directly: View PDF PDF.
Page Count: 72

48HC
Gas Heat/Electric Cooling Packaged Rooftop
3to10NominalTons
Product Data
the environmentally sound refrigerant
C10222
Copyright 2010 Carrier Corp. D7310 W. Morris St. DIndianapolis, IN 46231 Printed in U.S.A. Edition Date: 09/10
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:48HC---03PD
Replaces: 48HC---02PD
2
TABLE OF CONTENTS
PAGE
FEATURES AND BENEFITS 3....................
MODEL NUMBER NOMENCLATURE 4............
FACTORY OPTIONS AND/OR ACCESSORIES 5.....
AHRI COOLING RATING TABLES 8...............
HEAT RATING TABLE 9.........................
SOUND PERFORMANCE TABLE 10...............
PHYSICAL DATA 12.............................
CURBS & WEIGHTS DIMENSIONS 16.............
APPLICATION DATA 26.........................
PAGE
SELECTION PROCEDURE 28.....................
COOLING TABLES 29...........................
STATIC PRESSURE ADDERS 36..................
FAN PERFORMANCE 37.........................
ECONOMIZER, BAROMETRIC RELIEF AND
POWER EXHAUST PERFORMANCE 48............
ELECTRICAL INFORMATION 49.................
MCA/MOCP 52.................................
TYPICAL WIRING DIAGRAMS 57................
SEQUENCE OF OPERATION 61...................
GUIDE SPECIFICATIONS 63......................
Your Carrier rooftop unit (RTU) was designed by customers for customers. With “no--strip screw” collars, handled access
panels, and more we’ve made your unit easy to install, easy to maintain and easy to use.
Easy to install:
All WeatherMasterrunits are field--convertible to horizontal air flow; no special adapter curbs or kits are necessary.
Convertible airflow design makes it easy to adjust to unexpected job--site complications. Lighter units make easy
replacement. Carrier 3--10 ton 48HC rooftops fit on existing Carrier curbs dating back to 1989. Also, our large control box
gives you room to work and room to mount Carrier accessory controls.
Easy to maintain:
Easy access handles by Carrier provide quick and easy access to all normally serviced components. Our “no--strip” screw
system has superior holding power and guides screws into position while preventing the screw from stripping the unit’s
metal. Take accurate pressure readings by reading condenser pressure with panels on. Simply remove the black, composite
plug, route your gauge line(s) through the hole, and connect them to the refrigeration service valve(s). Now, you can take
refrigeration system pressure readings without affecting the condenser airflow.
Easy to use:
The newly designed, master terminal board by Carrier puts all your connections and troubleshooting points in one
convenient place, standard. Most low voltage connections are made to the same board and make it easy to find what you’re
looking for and easy to access it. Carrier rooftops have high and low pressure switches, a filter drier, and 2” (51mm) filters
standard.
the environmentally sound refrigerant
48HC
3
FEATURES AND BENEFITS
SSingle--stage cooling capacity control on 04 to 07 models
STwo--stage cooling capacity control on 08 to 12 models
SSEER up to 15.6
SEER up to 13.0
SIEER’s up to 13.0
SExclusive non--corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or
center drain
SGas efficiencies up to 82%
SInduced draft combustion design
SRedundant gas valve, with up to 2 stages of heating
SPre--painted exterior panels and primer--coated interior panels tested to 500 hours salt spray protection
STXV refrigerant metering system on each circuit
SFully insulated cabinet
SExclusive IGC solid--state control for on--board diagnostics with LED error code designation, burner control logic and
energy saving indoor fan motor delay
SDedicated 3--5 ton “Low NOx” models available that meet California Air Quality Management NOx requirement of 40
nangram/joule or less. Low NOx models include stainless steel heat exchangers
SCooling operating range up to 125_F(52_C), and down to 35_F(2_C) standard
SAccess panels with easy grip handles
SInnovative , easy starting, no--strip screw feature on unit access panels
STwo--inch disposable return air filters
STool--less filter access door
SBelt drive evaporator--fan motor and pulley combinations available on all three phase models
SElectric Drive x13 (5 speed/torque) motor on 04 to 06 models
SNew terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement
SField Convertible from vertical to horizontal airflow for slab mounting. No special kits required
SProvisions for thru--the--bottom power entry capability as standard
SSingle point gas and electric connections
SFull perimeter base rail with built--in rigging adapters and fork truck slots
SScroll compressors with internal line--break overload protection
S24--volt control circuit protected with resettable circuit breaker
SPermanently lubricated evaporator--fan motor
STotally enclosed condenser motors with permanently lubricated bearings
SLow Pressure switch and high--pressure switch protection
SExclusive IGC anti--cycle protection for gas heat operation
SSolid--state electronic direct spark ignition system
SFlame roll--out safety protector
SLiquid line filter drier on each circuit
SStandard Warranty: 10 yr. aluminized heat exchanger, 15 yr. stainless steel heat exchanger, 5 yr. compressor, 1 yr. parts.
48HC
4
MODEL NUMBER NOMENCLATURE
123456789101112131415161718
4 8 H C D D 0 8 A 3 A 5 -- 0 A 0 A 0
____ ____ ____
Unit Type
48 = Gas Heat Packaged
Rooftop
Model Series---WeatherMaster
HC = High Efficiency Brand / Packaging
Heat Size 0=Standard
D = Low gas heat 1=LTL
E=Mediumgasheat
F = High gas heat
L=LowNO
x,lowgasheat
M=LowNO
x, medium gas heat Electrical Options
N=LowNO
x, high gas heat A=None
S = Low heat with stainless steel exchanger C = N o n --- f u s e d d i s c o n n e c t
R = Med heat with stainless steel exchanger D = Thru the base connections
T = High heat with stainless steel exchanger F = Non ---fused & thru the base
(Low Noxmodels include stainless steel HX)
Refrig. System Options
A = Single stage cooling models with TXV Service Options
metering device control 0=None
D = 2--- Stage cooling models with TXV metering
device control 1 = Unpowered convenience outlet
2 = Powered convenience outlet
Nominal Cooling Tons 3 = Hinged panels
04 = 3 Ton 08 = 7.5 Ton 4 = Hinged panels, unpwrd conv outlet
05 = 4 Ton 09 = 8.5 Ton 5 = Hinged panels, pwrd conv outlet
06 = 5 Ton 12 = 10 Ton
07 = 6 Ton Air Intake / Exhaust Options
A=None
Sensor Options B=Tempeconow/barorelief
A=None F = Enthalpy econo w/ baro relief
B = RA smoke detector K = 2 --- P o s i t i o n d a m p e r
C = SA smoke detector
D=RA&SAsmokedetector Base Unit Controls
E=CO
2sensor 0 = Electromechanical
F = RA smoke detector & CO21 = PremierLink DDC controller
G = SA smoke detector & CO22 = RTU Open multi protocol controller
H=RA&SAsmokedetector&CO
2
Design Rev
Indoor Fan Options---3,4,5 Ton Models Only --- Factory design revision
0 = Electric (direct) drive X13 motor
2 = Medium static option---belt drive
3 = High static option ---belt drive Voltage
Indoor Fan Options---6,7.5,8.5 Ton Models Only 1 = 575/3/60
1 = Standard static option---belt drive 3 = 208---230/1/60
2 = Medium static option---belt drive 5 = 208---230/3/60
3 = High static option ---belt drive 6 = 460/3/60
C o i l O p t i o n s f i n / t u b e ( c o n d e n s e r --- e v a p o r a t o r --- h a i l g u a r d
A = Al/Cu --- Al/Cu
B = P r e c o a t A l / C u --- A l / C u
C = E c o a t A l / C u --- A l --- C u
D=EcoatAl/Cu---EcoatAl/Cu
E = Cu/Cu---Al/Cu
M = A l / C u --- A l / C u --- L o u v e r e d H a i l G u a r d
N = P r e c o a t A l / C u --- A l / C u --- L o u v e r e d H a i l G u a r d
P = E c o a t A l / C u --- A l / C u --- L o u v e r e d H a i l G u a r d
Q = E c o a t A l / C u --- E c o a t A l / C u --- L o u v e r e d H a i l G u a r d
R = C u / C u --- A l/ C u --- L o u v e r e d H a i l G u a r d
S = C u / C u --- A l / C u --- L o u v e r e d H a i l G u a r d
48HC
5
TABLE 1 – FACTORY--INSTALLED OPTIONS AND FIELD--INSTALLED ACCESSORIES
CATEGORY ITEM
FACTORY
INSTALLED
OPTION
FIELD
INSTALLED
ACCESSORY
Cabinet Thru---the---base electrical or gas---line connections X X
Hinged access panels X
Coil Options
Cu/Cu indoor and/or outdoor coils X
Pre---coated outdoor coils X
Premium, E --- coated outdoor coils X
Condenser Protection Condenser coil hail guard (louvered design) X X
Controls
Thermostats, temperature sensors, and subbases X
PremierLink DDC communicating controller X X
RTU Open multi ---protocol controller X
Smoke detector (supply and/or return air) X
Time Guard II compressor delay control circuit X
Phase Monitor X
Economizers
& Outdoor Air
Dampers
EconoMi$ertIV (for electro---mechanical controlled RTUs) X X
EconoMi$ert2 (for DDC controlled RTUs) X X
Motorized 2 position outdoor--- air damper X X
Manual outdoor ---air damper (25% and 50%) X
Barometric relief1X X
Power exhaust X
Economizer Sensors
&
IAQ Devices
Single dry bulb temperature sensors2X X
Differential dry bulb temperature sensors2X
Single enthalpy sensors2X X
Differential enthalpy sensors2X
Wall or duct mounted CO2sensor2X
Unit mounted CO2sensor2X
Gas Heat
Propane conversion kit X
Stainless steel heat exchanger X
High altitude conversion kit X
Flue Shield X
Flue Discharge Deflector X
Indoor Motor & Drive Multiple motor and drive packages X
Low Ambient
Control
Winter start kit3X
Motormasterhead pressure controller3X
Power
Options
Convenience outlet (powered) X
Convenience outlet (unpowered) X
Non ---fused disconnect X
Roof Curbs Roof curb 14” (356mm) X
Roof curb 24” (610mm) X
NOTES:
1. Included with economizer.
2. Sensors used to optimize economizer performance.
3. See application data for assistance.
48HC
6
FACTORY OPTIONS AND/OR ACCESSORIES
Economizer (dry--bulb or enthalpy)
Economizers save money. They bring in fresh, outside air
for ventilation; and provide cool, outside air to cool your
building. This is the preferred method of low--ambient
cooling. When coupled to CO2sensors, economizers can
provide even more savings by coupling the ventilation air
to only that amount required.
Economizers are available, installed and tested by the
factory, with either enthalpy or dry--bulb temperature
inputs. There are also models for electromechanical as
well as direct digital controllers. Additional sensors are
available as accessories to optimize the economizers.
Economizers include gravity controlled, barometric relief
equalizes building pressure and ambient air pressures.
This can be a cast effective solution to prevent building
pressurization.
CO2Sensor
Improves productivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ventilation. As occupants fill your building,
the CO2sensor detects their presence through increasing
CO2levels, and opens the economizer appropriately.
When the occupants leave, the CO2levels decrease, and
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
Smoke Detectors
Trust the experts. Smoke detectors make your application
safer and your job easier. Carrier smoke detectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidental contact.
Convenience Outlet (powered or un--powered)
Reduce service and/or installation costs by including a
convenience outlet in your specification. Carrier will
install this service feature at our factory. Provides a
convenient, 15 amp, 115v GFCI receptacle with “Wet in
Use” cover. The “powered” option allows the installer to
power the outlet from the line side of the disconnect or
load side as required by code. The “unpowered” option is
to be powered from a separate 115/120v power source.
Non--fused Disconnect
This OSHA--compliant, factory--installed, safety switch
allows a service technician to locally secure power to the
rooftop.
Power Exhaust with Barometric Relief
Superior internal building pressure control. This
field--installed accessory may eliminate the need for
costly, external pressure control fans.
PremierLink, DDC Controller
This CCN controller regulates your rooftop’s performance
to tighter tolerances and expanded limits, as well as
facilitates zoning systems and digital accessories. It also
unites your Carrier HVAC equipment together on one,
coherent CCN network. The PremierLink can be
factory--installed, or easily field--installed.
RTU Open, Multi--Protocol Controller
Connect the rooftop to an existing BAS without needing
complicated translators or adapter modules using the RTU
Open controller. This new controller speaks the 4 most
common building automation system languages (Bacnet,
Modbus, N2, and Lonworks). Use this controller when
you have an existing BAS. Besides the 4 protocols, it also
communicates with a Carrier Open system (I--Vu and
VVT).
Time Guard II Control Circuit
This accessory protects your compressor by preventing
short--cycling in the event of some other failure, prevents
the compressor from restarting for 30 seconds after
stopping. Not required with PremierLink, RTU Open, or
authorized commercial thermostats.
Motorized 2--Position Damper
The new Carrier 2--position, motorized outdoor air damper
admits up to 100% outside air. Using reliable, gear--driven
technology, the 2--position damper opens to allow
ventilation air and closes when the rooftop stops, stopping
unwanted infiltration.
Manual OA Damper
Manual outdoor air dampers are an economical way to
bring in ventilation air. The dampers are available in 25%
and 50% versions.
Hinged Access Panels
Allows access to unit’s major components with
specifically designed hinged access panels. Panels are:
filter, control box, fan motor and compressor.
48HC
7
FACTORY OPTIONS AND/OR ACCESSORIES (CON’T)
Motormaster Head Pressure Controller
The Motormaster motor controller is a low ambient, head
pressure controller kit that is designed to maintain the
unit’s condenser head pressure during periods of low
ambient cooling operation. This device should be used as
an alternative to economizer free cooling not when
economizer usage is either not appropriate or desired. The
Motormaster will either cycle the outdoor--fan motors or
operate them at reduced speed to maintain the unit
operation, depending on the model.
Winter Start Kit
The winter start kit by Carrier extends the low ambient
limit of your rooftop to 25_F(--4_C). The kit bypasses the
low pressure switch, preventing nuisance tripping of the
low pressure switch. Other low ambient precautions may
still be prudent.
Propane Heating
Convert your gas heat rooftop from standard natural gas
operation to Propane using this field--installed kit.
High Altitude Heating
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field--installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion at altitudes
above 2000 ft (610m). Kits may not be required in all
areas.
Flue Discharge Deflector
The flue discharge deflector is a useful accessory when
flue gas recirculation is a concern. By venting the flue
discharge upwards, the deflector minimizes the chance for
a neighboring unit to intake the flue exhaust.
Optional Stainless Steel Heat Exchanger
The stainless steel heat exchanger option provides the
tubular heat exchanger be made out of a minimum 20
gauge type 409 stainless steel for applications where the
mixed air to the heat exchanger is expected to drop below
45_F(7_C). Stainless steel may be specified on
applications where the presence of airborne contaminants
require its use (applications such as paper mills) or in area
with very high outdoor humidity that may result in severe
condensation in the heat exchanger during cooling
operation.
Flue Discharge Heat Shield
The flue discharge heat shield keeps people from touching
the rooftop unit’s potentially hot flue discharge. This is
especially useful for ground level applications, where
more, untrained people could have access to the unit’s
exterior.
Alternate Motors and Drives
Some applications need larger horsepower motors, some
need more airflow, and some need both. Regardless of the
case, your Carrier expert has a factory installed
combination to meet your application. A wide selection of
motors and pulleys (drives) are available, factory
installed, to handle nearly any application.
Thru--the--Base Connections
Thru--the--base connections, available as either an
accessory or as a factory option, are necessary to ensure
proper connection and seal when routing wire and piping
through the rooftop’s basepan and curb. These couplings
eliminate roof penetration and should be considered for
gas lines, main power lines, as well as control power.
48HC
8
TABLE 2 – AHRI COOLING RATING TABLE 1--STAGE COOLING
UNIT COOLING
STAGES
NOM.
CAPACITY
(TONS)
NET
COOLING
CAPACITY
(MBH)
TOTAL
POWER (kW) SEER EER IEER
A04 1 3 36.0 2.9 15.00 12.50 N/A
A05 1 4 48.5 3.7 15.60 13.00 N/A
A06 1 5 57.5 4.6 15.20 12.45 N/A
A07 1 6 73.0 6.0 N/A 12.00 13.00
TABLE 3 – AHRI COOLING RATING TABLE 2--STAGE COOLING
UNIT COOLING
STAGES
NOM.
CAPACITY
(TONS)
NET
COOLING
CAPACITY
(MBH)
TOTAL
POWER (kW) SEER EER IEER
D08 27.5 89.0 7.4 N/A 12.00 13.00
D09 28.5 97.0 8.1 N/A 12.00 13.00
D12 210 118.0 10.0 N/A 11.50 12.00
LEGEND
AHRI --- Air Conditioning, Heating and Refrigeration
Institute Test Standard
ASHRAE --- American Society of Heating, Refrigerating
and Air Conditioning, Inc.
EER --- Energy Efficiency Ratio
IEER --- Integrated Energy Efficiency Ratio
SEER --- Seasonal Energy Efficiency Ratio
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
NOTES:
1. Rated in accordance with AHRI Standards 210/240
(04---06 size) and 340/360 (07 ---12 size).
2. Ratings are based on:
Cooling Standard: 80_F(27_C) db, 67_F(19_C) wb
indoor air temp and 95_F(35_C) db outdoor air temp.
IEER Standard: A measure that expresses cooling
part---load EER efficiency for commercial unitary air ---
conditioning and heat pump equipment on the basis of
weighted operation at various load capacities.
3. All 48HC units comply with ASHRAE 90.1 2001, 2004
Energy Standard for minimum SEER and EER
requirements.
4. 48HC units comply with US Energy Policy Act (2005).
To evaluate code compliance requirements, refer to
state and local codes or visit the following website:
http://bcap ---energy.org.
48HC
9
TABLE 4 – HEATING RATING TABLE -- NATURAL GAS & PROPANE
Units Gas Heat
AL/SS HEAT EXCHANGER TEMP RISE
(DEG F)
THERMAL
EFFICIENCY
(%)
AFUE
(%)
INPUT / OUTPUT
STAGE 1 (MBH)
INPUT / OUTPUT
STAGE 2 (MBH)
Single Phase
04
LOW 50 / 41 72 / 59 25 --- 55 82% 81%
MED 82 / 66 115 / 93 55 --- 85 80% 80%
HIGH --- --- --- --- ---
05
LOW 50 / 41 72 / 59 25 --- 55 82% 81%
MED 82 / 66 115 / 93 35 --- 65 81% 80%
HIGH 120 / 96 150 / 120 50 --- 80 80% 80%
06
LOW 50 / 41 72 / 59 20 --- 55 82% 81%
MED 82 / 66 115 / 93 30 --- 65 81% 80%
HIGH 120 / 96 150 / 120 40 --- 80 80% 80%
Three Phase
04
LOW 50 / 41 72 / 59 25 --- 55 82% N/A
MED 82 / 66 115 / 93 55 --- 85 80% N/A
HIGH --- --- --- --- ---
05
LOW 50 / 41 72 / 59 25 --- 55 82% N/A
MED 82 / 66 115 / 93 35 --- 65 81% N/A
HIGH 120 / 96 150 / 120 50 --- 80 80% N/A
06
LOW 50 / 41 72 / 59 20 --- 55 82% N/A
MED 82 / 66 115 / 93 30 --- 65 81% N/A
HIGH 120 / 96 150 / 120 40 --- 80 80% N/A
07
LOW 50 / 41 72 / 59 15 --- 55 82% N/A
MED 90 / 73 125 / 103 20 --- 50 82% N/A
HIGH 105 / 84 150 / 120 30 --- 60 81% N/A
08
LOW 90 / 73 125 / 103 20 --- 50 82% N/A
MED 120 / 98 180 / 148 35 --- 65 82% N/A
HIGH 180 / 147 224 / 184 45 --- 75 82% N/A
09
LOW 90 / 73 125 / 103 20 --- 50 82% N/A
MED 120 / 98 180 / 148 30 --- 65 82% N/A
HIGH 180 / 147 224 / 184 40 --- 75 82% N/A
12
LOW 120 / 98 180 / 148 25 --- 65 82% N/A
MED 180 / 147 224 / 184 30 --- 65 82% N/A
HIGH 200 / 160 250 / 205 35 --- 70 80% N/A
NOTES:
Heat ratings are for natural gas heat exchangers operated at or below 2000 ft (610 m). For information on Propane or alti-
tudes above 2000 ft (610 m), see the Application Data section of this book. Accessory Propane/High Altitude kits are also
available.
In the USA the input rating for altitudes above 2000 ft (610m) must be derated by 4% for each 1000 ft (305 m) above sea
level. In Canada, the input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
48HC
10
TABLE 5 – HEATING RATING TABLE -- LOW NOX1
UNIT GAS HEAT
LOW NOx HEAT EXCHANGER TEMP RISE
(DEG F)
THERMAL
EFFICIENCY
(%)
AFUE
(%)
INPUT / OUTPUT
STAGE 1 (MBH)
INPUT / OUTPUT
STAGE 2 (MBH)
Single Phase
04
LOW --- 60 / 50 20 --- 50 81% 80%
MED --- 90 / 74 30 --- 60 81% 81%
HIGH --- --- --- --- ---
05
LOW --- 60 / 50 20 --- 50 81% 80%
MED --- 90 / 74 30 --- 60 81% 81%
HIGH --- 120 / 101 40 --- 70 81% 80%
06
LOW --- 60 / 50 15 --- 50 81% 80%
MED --- 90 / 74 25 --- 60 80% 81%
HIGH --- 120 / 101 35 --- 70 80% 81%
Three Phase
04
LOW --- 60 / 50 20 --- 50 81% N/A
MED --- 90 / 74 30 --- 60 81% N/A
HIGH --- --- --- --- ---
05
LOW --- 60 / 50 20 --- 50 81% N/A
MED --- 90 / 74 30 --- 60 81% N/A
HIGH --- 120 / 101 40 --- 70 81% N/A
06
LOW --- 60 / 50 15 --- 50 81% N/A
MED --- 90 / 74 25 --- 60 80% N/A
HIGH --- 120 / 101 35 --- 70 80% N/A
NOTE:
1. Units meet California’s South Coast Air Quality Management District (SCAQMD) Low---NOxemissions requirement of 40
nanograms per joule or less.
TABLE 6 – SOUND PERFORMANCE TABLE
UNIT COOLING
STAGES
OUTDOOR SOUND (dB) AT 60
A --- W E I G H T E D 63 125 250 500 1000 2000 4000 8000
A04 176 78.2 78.0 74.2 73.3 70.6 66.0 62.4 56.9
A05 178 84.7 83.6 77.1 74.6 72.3 68.3 64.7 60.9
A06 177 87.5 82.5 76.1 73.6 71.3 67.1 64.1 60.0
A07 182 90.1 82.6 81.0 79.4 77.0 73.0 70.4 66.7
D08 282 90.6 84.3 80.2 79.3 77.1 72.2 67.4 63.7
D09 282 88.6 85.0 81.6 79.5 77.4 74.1 71.0 66.3
D12 287 85.9 87.9 85.6 84.4 82.8 78.5 74.9 72.5
LEGEND
dB --- Decibel
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
NOTES:
1. Outdoor sound data is measure in accordance with
AHRI.
2. Measurements are expressed in terms of sound power.
Do not compare these values to sound pressure values
because sound pressure depends on specific environ-
mental factors which normally do not match individual
applications. Sound power values are independent of
the environment and therefore more accurate.
3. A ---weighted sound ratings filter out very high and very
low frequencies, to better approximate the response of
“average” human ear. A ---weighted measurements for
Carrier units are taken in accordance with AHRI.
48HC
11
TABLE 7 – MINIMUM -- MAXIMUM AIRFLOW RATINGS -- NATURAL GAS & PROPANE
UNIT HEAT LEVEL COOLING HEATING
MINIMUM MAXIMUM MINIMUM MAXIMUM
48HC**04
LOW
900 1500
990 2190
MED 1000 1550
HIGH --- ---
48HC**05
LOW
1200 2000
990 2190
MED 1330 2460
HIGH 1390 2220
48HC**06
LOW
1500 2500
990 2730
MED 1330 2880
HIGH 1390 2780
48HC**07
LOW
1800 3000
990 3640
MED 1330 4750
HIGH 1390 3750
48HC**08
LOW
2250 3750
1900 4750
MED 2100 3900
HIGH 2270 3780
48HC**09
LOW
2550 4250
1900 4750
MED 2100 4560
HIGH 2270 4250
48HC**12
LOW
3000 5000
2100 5470
MED 2620 5670
HIGH 2650 5290
48HC
12
TABLE 8 – PHYSICAL DATA (COOLING) 3 -- 6 TONS
48HC*A04 48HC*A05 48HC*A06 48HC*A07
Refrigeration System
#Circuits/#Comp./Type 1/1/Scroll 1/1/Scroll 1/1/Scroll 1/1/Scroll
Puronrrefrig. (R---410A) charge A/B (lbs---oz) 9 --- 0 1 2 --- 8 1 3 --- 3 1 4 --- 0
Metering Device TXV TXV TXV TXV
High---press. Trip / Reset (psig) 630 / 505 630 / 505 630 / 505 630 / 505
Low---press. Trip / Reset (psig) 54 / 117 54 / 117 54 / 117 54 / 117
Compressor Capacity Staging (%) 100% 100% 100% 100%
Evap. Coil
Material (Tube Fin) Cu / Al Cu / Al Cu / Al Cu / Al
Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF 3/8” RTPF
Rows / FPI 3 / 15 3/15 4/15 3/15
Tota l Face A r ea (f t 2)5.5 7.3 7.3 8.9
Condensate Drain Conn. Size 3/4” 3/4” 3/4” 3/4”
Evap. Fan and Motor
Standard Static
1phase
Motor Qty / Drive Type 1/Direct 1/Direct 1/Direct n/a/Belt
Max BHP 11 1 n/a
RPM Range 600---1200 600---1200 600--- 1200 n/a
Motor Frame Size 48 48 48 n/a
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal n/a/Centrifugal
Fan Diameter (in) 10 x 10 10 x 10 11 x 10 n/a
Standard Static
3phase
Motor Qty / Drive Type 1/Direct 1/Direct 1/Direct 1/Belt
Max BHP 1 1 1 1.7
RPM Range 600---1200 600---1200 600--- 1200 489---747
Motor Frame Size 48 48 48 56
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 10 x 10 10 x 10 11 x 10 15 x 15
Medium Static
3phase
Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt 1/Belt
Max BHP 1.2 1.7 2.4 2.9
RPM Range 770---1175 920---1303 1035--- 1466 733---949
Motor Frame Size 48 56 56 56
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 10 x 10 10 x 10 10 x 10 15 x 15
High Static
3phase
Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt 1/Belt
Max BHP 2.4 2.9 2.9 4.7
RPM Range 1035---1466 1208---1639 1303--- 1687 909---1102
Motor Frame Size 56 56 56 14
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 10 x 10 10 x 10 10 x 10 15 x 15
Cond. Coil
Material (Tube/Fin) Cu / Al Cu / Al Cu / Al Cu / Al
Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF 3/8” RTPF
Rows / FPI 2 / 17 2/17 2/17 2/17
Tota l Face A r ea (f t 2) 12.7 21.3 21.3 20.5
Cond. fan / motor
Qty / Motor Drive Type 1/ Direct 1/ Direct 1/ Direct 2/ Direct
Motor HP / RPM 1/8 / 825 1/4 / 1100 1/4 / 1100 1/4 / 1100
Fan diameter (in) 22 22 22 22
Filters
RA Filter # / Size (in) 2 / 16 x 25 x 2 4/16x16x2 4/16x16x2 4/16x20x2
OA inlet screen # / Size (in) 1/20x24x1 1/20x24x1 1/20x24x1 1/20x36x1
48HC
13
TABLE 9 – PHYSICAL DATA (HEATING) 3 -- 6 TONS
48HC**04 48HC**05 48HC**06 48HC**07
Gas Connection
#ofGasValves 1111
Nat. gas supply line press (in. w.g.)/(PSIG) 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
Propane supply line press (in. w.g.)/(PSIG) 11 --- 13 / 0.40 --- 0.47 11 --- 13 / 0.40 --- 0.47 11 --- 13 / 0.40 --- 0.47 11 --- 13 / 0.40 --- 0.47
Heat Anticipator Setting (Amps)
1st stage 0.14 0.14 0.14 0.14
2nd stage 0.14 0.14 0.14 0.14
Natural Gas, Propane Heat
#ofstages/#ofburners(total) 1or2/2 1or2/2 1or2/2 2/2
LOW
Connection size 1/2” NPT 1/2” NPT 1/2” NPT 1/2” NPT
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) 25 --- 55 25 --- 55 20 --- 55 15 --- 55
#ofstages/#ofburners(total) 1or2/3 1or2/3 1or2/3 2/3
MED
Connection size 1/2” NPT 1/2” NPT 1/2” NPT 1/2” NPT
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) 55 --- 85 35 --- 65 30 --- 65 20 --- 50
Connection size --- 1or2/3 1or2/3 2/4
HIGH
#ofstages/#ofburners(total) --- 1/2” NPT 1/2” NPT 3/4” NPT
Rollout switch opens / closes --- 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) --- 50 --- 80 40 --- 80 30 --- 60
Low NOxGas Heat
#ofstages/#ofburners(total) 1or2/2 1or2/2 1or2/2 ---
LOW
Connection size 1/2” NPT 1/2” NPT 1/2” NPT ---
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115 ---
Temperatureriserange(F) 20 --- 50 20 --- 50 15 --- 50 ---
#ofstages/#ofburners(total) 1or2/3 1or2/3 1or2/3 ---
MED
Connection size 1/2” NPT 1/2” NPT 1/2” NPT ---
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115 ---
Temperatureriserange(F) 30 --- 60 30 --- 60 25 --- 60 ---
---
#ofstages/#ofburners(total) --- 1or2/3 1or2/3 ---
HIGH
Connection size --- 1/2” NPT 1/2” NPT ---
Rollout switch opens / closes --- 195 / 115 195 / 115 ---
Temperatureriserange(F) --- 40 --- 70 35 --- 70 ---
48HC
14
TABLE 10 – PHYSICAL DATA (COOLING) 7.5 -- 10 TONS
48HC*D08 48HC*D09 48HC*D12
Refrigeration System
#Circuits/#Comp./Type 2/2/Scroll 2/2/Scroll 2/2/Scroll
R---410a charge A/B (lbs --- oz) 9 --- 10 / 9 --- 10 9 --- 1 4 / 9 --- 1 4 1 2 --- 1 1 / 1 2 --- 5
Metering device TXV TXV TXV
High---press. Trip / Reset (psig) 630 / 505 630 / 505 630 / 505
Low---press. Trip / Reset (psig) 54 / 117 54 / 117 54 / 117
Compressor Capacity Staging (%) 50% / 100% 50% / 100% 50% / 100%
Evap. Coil
Material (Tube/Fin) Cu / Al Cu / Al Cu / Al
Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF
Rows / FPI 4 / 15 4/15 4/15
total face area (ft2) 11.1 11.1 11.1
Condensate drain conn. size 3/4” 3/4” 3/4”
Evap. fan and motor
Standard Static
3phase
Motor Qty / Drive type 1/Belt 1/Belt 1/Belt
Max BHP 1.7 1.7 2.4
RPM range 518---733 518--- 733 591---838
motor frame size 56 56 56
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 15 x 15 15 x 15 15 x 15
Medium Static
3phase
Motor Qty / Drive type 1/Belt 1/Belt 1/Belt
Max BHP 2.4 2.4 3.7
RPM range 690---936 690--- 936 838---1084
motor frame size 56 56 56
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 15 x 15 15 x 15 15 x 15
High Static
3phase
Motor Qty / Drive type 1/Belt 1/Belt 1/Belt
Max BHP 3.7 3.7 5.0
RPM range 838---1084 838---1084 1022--- 1240
motor frame size 56 56 56
Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal
Fan Diameter (in) 15 x 15 15 x 15 15 x 15
Cond. Coil
Material (Tube/Fin) Cu / Al Cu / Al Cu / Al
Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF
Rows / FPI 2 / 17 2/17 3/17
Tota l Face A r ea (f t 2) 25.1 25.1 25.1
Cond. fan / motor
Qty / Motor drive type 2 / direct 2/direct 1/direct
Motor HP / RPM 1/4 / 1100 1/4 / 1100 1 / 1175
Fan diameter (in) 22 22 30
Filters
RA Filter # / size (in) 4 / 20 x 20 x 2 4/20x20x2 4/20x20x2
OA inlet screen # / size (in) 1/20x24x1 1/20x24x1 1/20x24x1
48HC
15
TABLE 11 – PHYSICAL DATA (HEATING) 7.5 -- 10 TONS
48HC**08 48HC**09 48HC**12
Gas Connection
#ofGasValves 1 1 1
Nat. gas supply line press (in. w.g.)/(PSIG) 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7
Propane supply line press (in. w.g.)/(PSIG) 11 ---13 / 0.40 --- 0.47 11 --- 13 / 0.40 --- 0.47 11 --- 13 / 0.40 --- 0.47
Heat Anticipator Setting (Amps)
1st stage 0.14 0.14 0.14
2nd stage 0.14 0.14 0.14
Natural Gas, Propane Heat
#ofstages/#ofburners(total) 2/3 2/3 2/4
LOW
Connection size 1/2” NPT 1/2” NPT 3/4” NPT
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) 20 --- 50 20 --- 50 25 --- 65
#ofstages/#ofburners(total) 2/4 2/4 2/5
MED
Connection size 3/4” NPT 3/4” NPT 3/4” NPT
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) 35 --- 65 30 --- 65 30 --- 65
#ofstages/#ofburners(total) 2/5 2/5 2/5
HIGH
Connection size 3/4” NPT 3/4” NPT 3/4” NPT
Rollout switch opens / closes 195 / 115 195 / 115 195 / 115
Temperatureriserange(F) 45 --- 75 40 --- 75 35 --- 70
48HC
16
CURBS & WEIGHTS DIMENSIONS -- 48HC 04--06
NOTES:
1. DIMENSIONS ARE IN INCHES, DIMENSIONS
IN [ ] ARE IN MILLIMETERS.
2. CENTER OF GRAVITY
3. DIRECTION OF AIR FLOW
25
636[]
18-1/8
459[]
12-1/4
312[]
14-1/4
363[]
16-1/8
411[]
SUPPLY
AIR
17-3/4
451[]
12-1/8
307[]
10-7/8
277[]
RETURN AIR
25-5/8
652[]
33-3/8
848[]
16
406[]
26-1/2
673[]
6-1/4
157[]
29-3/8
747[]
32-1/4
818[]
3-3/8
85[]
18-1/2
470[]
4
100[]
ECONOMIZER HOOD
(OPTIONAL)
RETURN
AIR
SUPPLY
AIR
TOP
SEE THRU THE
BASE CHART
E ALT.
CONDENSATE
DRAIN OPENING
IN BASEPAN
C
FLUE
HOOD
W
X
Y
Z
21-1/4
539[]
26-3/4
681[]
7
177[]
RETURN
AIR
25-1/8
638[]
10-1/2
265[]
SUPPLY AIR
16-3/4
427[]
11-3/8
289[]
6-1/8
155[]
6
152[]
31-1/4
793[]
6-5/8
168[]
1-1/4
32[]
RETURN
AIR
SUPPLY
AIR
RIGHT
OUTSIDE
AIR
BAROMETRIC
RELIEF
FLOW
E STD.
CONDENSATE
DRAIN
FILTER
J
30-1/8
764[]
8-3/8
213[]
74-3/8
1888[]
INDOOR BLOWER
ACCESS
CONTROL BOX
ACCESS PANEL
FRONT
F
OPTIONAL
FACTORY
INSTALLED
DISCONNECT
HANDLE
HANDLE
19-1/2
494[]
6-5/8
168[]
4-5/8
118[]
K
46-3/4
1187[]
3-3/4
95[]
CONDENSER
COIL
LEFT
ELECTRICAL
DISCONNECT
LOCATION
A,
B,
G
D
OPTIONAL
FACTORY
INSTALLED
CONVENIENCE
OUTLET
2-5/8
67[]
BACK
INDOOR COIL
ACCESS PANEL
FILTER ACCESS PANEL
(TOOL-LESS)
TYP
CURB
WIDTH
COMP.
ACCESS
PANEL
CONDENSER
COIL
CONNECTION SIZES
A 1 3/8" [35] DIA FIELD POWER SUPPLY HOLE
B 2" [50] DIA POWER SUPPLY KNOCKOUT
C 1 3/4" [51] DIA GAUGE ACCESS PLUG
D 7/8" [22] DIA FIELD CONTROL WIRING HOLE
E3/4"-14 NPT CONDENSATE DRAIN
F1/2"-14 NPT GAS CONNECTION
G2 1/2 " [64] DIA POWER SUPPLY KNOCK-OUT
THRU-THE-BASE CHART
THESE HOLES REQUIRED FOR USE
CRBTMPWR001A01, 003A01
THREADED
CONDUIT SIZE
WIRE
USE
REQ'D HOLE
SIZES (MAX.)
W 1/2" ACC. 7/8" [22.2]
X 1/2" 24V 7/8" [22.2]
Y * 3/4" (001,003) POWER 1 1/8" [28.4]
Z** (003) 1/2" FPT GAS 1 3/16" [30.0]
FOR "THRU-THE-BASEPAN" FACTORY OPTION,
FITTINGS FOR ONLY X,Y, & Z ARE PROVIDED
*SELECT EITHER 3/4" OR 1/2"
FOR POWER, DEPENDING ON WIRE SIZE
** (001) PROVIDES 3/4" FPT THRU CURB
FLANGE & FITTING.
UNIT J K
48HC-A04 33 3/8
[847]
18 5/8
[472]
48HC-A05 41 3/8
[1051]
14 7/8
[377]
48HC-A06 41 3/8
[1051]
14 7/8
[377]
44
[1117]
C10151
Fig. 1 -- Dimensions 48HC 04--06
48HC
17
CURBS & WEIGHTS DIMENSIONS -- 48HC 04--06 (cont.)
UNIT
STD. UNIT
WEIGHT
CORNER
WEIGHT (A)
CORNER
WEIGHT (B)
CORNER
WEIGHT (C)
CORNER
WEIGHT (D) C.G. HEIGHT
LBS. KG. LBS. KG. LBS. KG. LBS. KG. LBS. KG. X Y Z
48HC-A04 505 229 124 56 117 53 128 58 136 62 36 1/8 [918] 24 3/8 [619] 19 [483]
48HC-A05 590 268 151 69 144 65 144 65 151 69 36 1/4 [921] 23 3/8 [594] 20 1/8 [511]
48HC-A06 600 271 156 71 145 66 144 65 155 70 35 7/8 [911] 23 1/4 [591] 19 1/2 [495]
*- STANDARD UNIT WEIGHT IS WITH LOW GAS HEAT AND WITHOUT PACKAGING.
FOR OTHER OPTINS AND ACCESSORIES REFER TO THE PRODUCT DATA CATALOG.
X
Y
CORNER A CORNER B
CORNER C
CORNER D
TOP
Z
C10152
Fig. 2 -- Dimensions 48HC 04--06
C
B
A
D
C08337
Fig. 3 -- Service Clearance
LOC DIMENSION CONDITION
A
48” (1219 mm) Unit disconnect is mounted on panel
18” (457 mm) No disconnect, convenience outlet option
18” (457 mm) Recommended service clearance
12” (305 mm) Minimum clearance
B
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for sources of flue products within 10---ft of unit fresh air intake hood
C36” (914 mm) Side condensate drain is used
18” (457 mm) Minimum clearance
D
48” (1219 mm) No flue discharge accessory installed, surface is combustible material
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for adjacent units or building fresh air intakes within 10---ft of this unit’s flue outlet
48HC
18
CURBS & WEIGHTS DIMENSIONS -- 48HC 04--06 (cont.)
CONNECTOR
CONNECTOR
PKG. ACCY.
PKG. ACCY. B C
D ALT
D ALT
DRAIN
DRAIN
HOLE
HOLE
GAS
GAS
POWER
POWER
CONTROL
CONTROL
ACCESSORY
ACCESSORY
POWER
POWER
CRBTMPWR001A01
CRBTMPWR001A01
1’
1’-9
11
11/16”
[551]
[551] 13/4”
[44.5]
[44.5]
1’
1’
-4”
-4”
[406]
[406]
3/4
”
”
[19]
[19]
NPT
NPT
CRBTMPWR003A01
CRBTMPWR003A01
3/4
”
”
[19]
[19]
NPT
NPT
1/2
”
”
[12.7]
[12.7]
NPT
NPT
1/2
”
”
[12.7]
[12.7]
NPT
NPT
1/2
”
”
[12.7]
[12.7]
NPT
NPT
ROOFCURB
ACCESSORY A UNIT SIZE
CRRFCURB002A01
CRRFCURB001A01 1’-2”
[356]
2’-0”
[610]
48HC
A04-A06
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance: 4 ft on each side.
7. Direction of airflow.
8. Connector package CRBTMPWR001A01 is for
thru-the-curb type gas.
CRBTMPWR003A01 is for thru-the-base type
gas connections.
Typical Corner Fastening Device
C10466
Fig. 4 -- Roof Curb Details
48HC
19
CURBS & WEIGHTS DIMENSIONS -- 48HC 07--09
C10514
Fig. 5 -- Dimensions 48HC 07--09
48HC
20
CURBS & WEIGHTS DIMENSIONS -- 48HC 07--09 (cont.)
C10154
Fig. 6 -- Dimensions 48HC 07--09
C
B
A
D
C08337
Fig. 7 -- Service Clearance
LOC DIMENSION CONDITION
A
48” (1219 mm) Unit disconnect is mounted on panel
18” (457 mm) No disconnect, convenience outlet option
18” (457 mm) Recommended service clearance
12” (305 mm) Minimum clearance
B
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for sources of flue products within 10---ft of unit fresh air intake hood
C36” (914 mm) Side condensate drain is used
18” (457 mm) Minimum clearance
D
48” (1219 mm) No flue discharge accessory installed, surface is combustible material
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for adjacent units or building fresh air intakes within 10---ft of this unit’s flue outlet
48HC
21
CURBS & WEIGHTS DIMENSIONS -- 48HC 07--09 (cont.)
48HC*A07
48HC*D08-09
UNIT SIZE
ROOFCURB
ACCESSORY
CRRFCURB003A01
CRRFCURB004A01
1’ - 2”
[356]
A
2’ - 0”
[610]
Typical Corner Fastening Device
C10467
Fig. 8 -- Roof Curb Details
48HC
22
CURBS & WEIGHTS DIMENSIONS -- 48HC 12
NOTES:
1. DIMENSIONS ARE IN INCHES, DIMENSIONS
IN [ ] ARE IN MILLIMETERS.
2. CENTER OF GRAVITY
3. DIRECTION OF AIR FLOW
11
279[]
14
355[]
16
412[]
18
469[]
29-5/8
751[]
25-1/2
646[]
37-5/8
955[]
RETURN AIR
36-3/8
925[]
12-5/8
321[]
40-3/8
1027[]
6-1/4
159[]
20-3/4
526[]
40-3/8
1026[]
3-1/4
83[]
14
356[]
SUPPLY
AIR
28-3/4
731[]
4
100[]
ECONOMIZER HOOD
(OPTIONAL)
RETURN
AIR
SUPPLY
AIR
E ALT.
CONDENSATE
DRAIN OPENING
IN BASEPAN
SEE
THRU-THE-BASE
CHART
W
X
Y
Z
59-1/2
1510[]
6-5/8
168[]
36
913[]
4-5/8
118[]
H
3-3/4
95[]
CONDENSER
COIL
LEFT
A,
B,
G
D
C
ELECTRICAL
DISCONNECT
LOCATION
OPTIONAL
FACTORY
INSTALLED
CONVENIENCE
OUTLET
6-1/8
[
88-1/8
2238[]
TYP
CURB
WIDTH
2-5/8
67[]
J
INDOOR BLOWER
ACCESS
CONTROL BOX
ACCESS PANEL
HANDLE
HANDLE
OPTIONAL
FACTORY
INSTALLED
DISCONNECT
FRONT
SUPPLY AIR
27-3/4
706[]
13-1/8
334[]
11-7/8
302[]
RETURN
AIR
K
26
649[]
6-1/8
157[] 6-5/8
168[]
7
177[]
37-7/8
963[]
42-3/8
1076[]
6-1/8
155[]
2
49.7[] 1.30
33.059[]
RETURN
AIR
RIGHT
OUTSIDE
AIR
BAROMETRIC
RELIEF
FLOW
E STD.
CONDENSATE
DRAIN
FILTER
FLUE
HOOD
BACK
INDOOR COIL
ACCESS PANEL
FILTER ACCESS PANEL
(DISPOSABLE FILTERS)
CONDENSER
COIL
CONNECTION SIZES
A 1 3/8" [35] DIA FIELD POWER SUPPLY HOLE
B 2 1/2" [64] DIA POWER SUPPLY KNOCKOUT
C 1 3/4" [51] DIA GAUGE ACCESS PLUG
D 7/8" [22] DIA FIELD CONTROL WIRING HOLE
E 3/4"-14 NPT CONDENSATE DRAIN
F 3/4"-14 NPT GAS CONNECTION
G 2" [51] DIA POWER SUPPLY KNOCK-OUT
THRU-THE-BASE CHART
THESE HOLES REQUIRED FOR USE
CRBTMPWR002A01,004A01
THREADED
CONDUIT SIZE
WIRE
USE
REQ'D HOLE
SIZES (MAX.)
W 1/2" ACC. 7/8" [22.2]
X 1/2" 24V 7/8" [22.2]
Y 1 1/4" (002,004) POWER 1 3/4" [44.4]
Z* (004) 3/4" FPT GAS 1 5/8" [41.3]
FOR "THRU-THE-BASEPAN" FACTORY OPTION,
FITTINGS FOR ONLY X, Y, & Z ARE PROVIDED
*(002) PROVIDES 3/4" FPT THRU CURB
FLANGE & FITTING.
C10463
Fig. 9 -- Dimensions 48HC 12
48HC
23
CURBS & WEIGHTS DIMENSIONS -- 48HC 12 (cont.)
C10143
Fig. 10 -- Dimensions 48HC 12
C
B
A
D
C08337
Fig. 11 -- Service Clearance
LOC DIMENSION CONDITION
A
48” (1219 mm) Unit disconnect is mounted on panel
18” (457 mm) No disconnect, convenience outlet option
18” (457 mm) Recommended service clearance
12” (305 mm) Minimum clearance
B
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for sources of flue products within 10---ft of unit fresh air intake hood
C36” (914 mm) Side condensate drain is used
18” (457 mm) Minimum clearance
D
48” (1219 mm) No flue discharge accessory installed, surface is combustible material
42” (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36” (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Special Check for adjacent units or building fresh air intakes within 10---ft of this unit’s flue outlet
48HC
24
CURBS & WEIGHTS DIMENSIONS -- 48HC 12 (cont.)
48HC*D12
48HC*D12
UNIT SIZE
ROOFCURB
ACCESSORY
CRRFCURB003A02
CRRFCURB004A02
1’ - 2”
[356]
2’ - 0”
[610]
Fig. 12 -- Roof Curb Details
48HC
25
OPTIONS & ACCESSORY WEIGHTS
OPTION / ACCESSORY
OPTION / ACCESSORY WEIGHTS
04 05 06 07 08 09 12
lb kg lb kg lb kg lb kg lb kg lb kg lb kg
Power Exhaust --- vertical 50 23 50 23 50 23 75 34 75 34 75 34 75 34
Power Exhaust --- horizontal 30 14 30 14 30 14 30 14 30 14 30 14 30 14
EconoMi$er(IV or 2) 50 23 50 23 50 23 75 34 75 34 75 34 75 34
Two Position damper 39 18 39 18 39 18 58 26 58 26 58 26 58 26
Manual Dampers 12 512 512 518 818 818 818 8
Medium Gas Heat 12 5949415 715 715 718 8
High Gas Heat --- --- 17 817 829 13 29 13 29 13 35 16
Hail Guard (louvered) 16 716 716 734 15 34 15 34 15 34 15
Cu/Cu Condenser Coil 35 16 35 16 35 16 95 43 95 43 95 43 170 77
Cu/Cu Condenser and Evaporator Coils 60 27 60 27 90 41 140 64 140 64 195 88 270 122
Roof Curb (14--- in. curb) 115 52 115 52 115 52 143 65 143 65 143 65 143 65
Roof Curb (24--- in. curb) 197 89 197 89 197 89 245 111 245 111 245 111 245 111
CO2sensor 52525252525252
Flue Discharge Deflector 73737373737373
Optional Indoor Motor/Drive 10 510 510 515 715 715 715 7
Motor Master Controller 35 16 35 16 35 16 35 16 35 16 35 16 35 16
Return Smoke Detector 52525252525252
Supply Smoke Detector 52525252525252
Fan/Filter Status Switch 21212121212121
Non ---Fused Disconnect 15 715 715 715 715 715 715 7
Powered Convenience outlet 35 16 35 16 35 16 35 16 35 16 35 16 35 16
Non ---Powered Convenience outlet 52525252525252
Enthalpy Sensor 21212121212121
Differential Enthalpy Sensor 31313131313131
48HC
26
APPLICATION DATA
Min operating ambient temp (cooling):
In mechanical cooling mode, your Carrier rooftop unit can
safely operate down to an outdoor ambient temperature of
35_F(--2_C) and 25_F(--4_C), with an accessory winter
start kit. It is possible to provide cooling at lower outdoor
ambient temperatures by using less outside air,
economizers, and/or accessory low ambient kits.
Max operating ambient temp (cooling):
The maximum operating ambient temperature for cooling
mode is 125_F(52_C). While cooling operation above
125_F(52_C) may be possible, it could cause either a
reduction in performance, reliability, or a protective action
by the unit’s internal safety devices.
Min mixed air temp (heating):
Using the factory settings, the minimum temperatures for
the mixed air (the combined temperature of the warm
return air and the cold outdoor air) entering the dimpled,
gas heat exchangers are:
Aluminized Stainless Steel
50_F(10_C) continuous
45_F(7_C) intermittent
40_F(4_C) continuous
35_F(2_C) intermittent
Operating at lower mixed--air temperatures may be
possible, if a field--supplied, outdoor air thermostat
initiates both heat stages when the temperature is less than
the minimum temperatures listed above. Please contact
your local Carrier representative for assistance.
Min and max airflow (heating and cooling):
To maintain safe and reliable operation of your rooftop,
operate within the heating airflow limits during heating
mode and cooling airflow limits during cooling mode.
Operating above the max may cause blow--off, undesired
airflow noise, or airflow related problems with the rooftop
unit. Operating below the min may cause problems with
coil freeze--up and unsafe heating operation. Heating and
cooling limitations differ when evaluating operating CFM,
the minimum value is the HIGHER of the cooling and
heating minimum CFM values published in Table 7 and
the maximum value is the LOWER of the cooling and
heating minimum values published in Table 7.
Heating--to--cooling changeover:
Your unit will automatically change from heating to
cooling mode when using a thermostat with an
auto--change--over feature.
Airflow:
All units are draw--though in cooling mode and
blow--through in heating mode.
Outdoor air application strategies:
Economizers reduce operating expenses and compressor
run time by providing a free source of cooling and a
means of ventilation to match application changing needs.
In fact, they should be considered for most applications.
Also, consider the various economizer control methods
and their benefits, as well as sensors required to
accomplish your application goals. Please contact your
local Carrier representative for assistance.
Motor limits, break horsepower (BHP):
Due to internal design of Carrier units, the air path, and
specially designed motors, the full horsepower (maximum
continuous BHP) band, as listed in Table 8 and 10, can be
used with the utmost confidence. There is no need for
extra safety factors, as Carrier motors are designed and
rigorously tested to use the entire, listed BHP range
without either nuisance tripping or premature motor
failure.
Propane heating:
Propane has different physical qualities than natural gas.
As a result, Propane requires different fuel to air mixture.
To optimize the fuel/air mixture for Propane, Carrier sells
different burner orifices in an easy to install accessory kit.
To select the correct burner orifices or determine the heat
capacity for an Propane application, use either the
selection software, or the unit’s service manual.
High altitude heating:
High altitudes have less oxygen, which affects the fuel/air
mixture in heat exchangers. In order to maintain a proper
fuel/air mixture, heat exchangers operating in altitudes
above 2000 ft (610 m) require different orifices. To select
the correct burner orifices or determine the heat capacity
for a high altitude application, use either the selection
software, or the unit’s service manual.
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field--installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion on altitudes
above 2000 ft (610 m).
NOTE: Typical natural gas heating value ranges from
975 to 1050 Btu/ft3at sea level nationally. The heating
value goes down approximately 1.7% per every thousand
feet elevation. Standard factory orifices can typically be
used up to 2000 ft (610m) elevation without any
operational issues.
NOTE: For installations in Canada, the input rating
should be derated by 10% for altitudes from 2000 ft
(610m)to 4500 ft (1372m) above sea level.
48HC
27
APPLICATION DATA (cont.)
Sizing a rooftop
Bigger isn’t necessarily better. While an air conditioner
needs to have enough capacity to meet the design loads, it
doesn’t need excess capacity. In fact, excess capacity
typically results in very poor part load performance and
humidity control.
Using higher design temperatures than ASHRAE
recommends for your location, adding “safety factors” to
the calculated load, are all signs of oversizing air
conditioners. Oversizing the air conditioner leads to poor
humidity control, reduced efficiency, higher utility bills,
larger indoor temperature swings, excessive noise, and
increased wear and tear on the air conditioner.
Rather than oversizing an air conditioner, engineers
should “right--size” or even slightly undersize air
conditioners. Correctly sizing an air conditioner controls
humidity better; promotes efficiency; reduces utility bills;
extends equipment life, and maintains even, comfortable
temperatures. Please contact your local Carrier
representative for assistance.
Low ambient applications
The optional Carrier economizer can adequately cool your
space by bringing in fresh, cool outside air. In fact, when
so equipped, accessory low--ambient kit may not be
necessary. In low ambient conditions, unless the outdoor
air is excessively humid or contaminated,
economizer--based “free cooling” is the preferred less
costly and energy conscious method.
In low ambient applications where outside air might not
be desired (such as contaminated or excessively humid
outdoor environments), your Carrier rooftop can operate
to ambient temperatures down to --20_F(--29_C) using the
recommended accessory Motormaster low ambient
controller.
48HC
28
SELECTION PROCEDURE (WITH 48HC*A07 EXAMPLE)1
I. Determine cooling and heating loads.
Given:
Mixed air dry bulb 80_F(27_C)
Mixed air wet bulb 67_F(19_C)
Ambient dry bulb 95_F(35_C)
TCLoad 73.6 MBH
SHCLoad 53.3 MBH
Vertical supply air 2100 CFM
Heating load 85.0 MBH
External static pressure 0.67 in. wg
Electrical characteristics 230--3--60
II. Make an initial guess at cooling tons.
Refrig. tons = TCLoad / 12 MBH per ton
Refrig. tons = 72.0 / 12 = 6.0 tons
In this case, start by looking at the 48HC**07.
III. Look up the rooftop’s TC and SHC.
Table 15 shows that, at the application’s supply air
CFM, mixed air and ambient temperatures, the
48HC*A07 supplies:
TC = 73.6 MBH2
SHC = 53.3 MBH2
IV. Calculate the building latent heat load.
LCLoad =TC
Load -- S H C Load
LCLoad = 72.0 MBH -- 54.0 MBH = 18.0 MBH
V. Calculate RTU latent heat capacity.
LC = TC -- SHC
LC = 73.6 MBH -- 53.3 MBH = 20.3 MBH
VI. Compare RTU capacities to loads.3
Compare the rooftop’s SHC and LC to the
building’s sensible and latent heat loads.
VII. Select factory options (FIOP)
Local code requires an economizer for any unit with
TC greater than 65.0 MBH.
VIII.Calculate the total static pressure.
External static pressure 0.67 in. wg
Sum of FIOP / Accessory static +0.13 in. wg
Total Static Pressure 0.80 in. wg
IX. Look up the indoor fan RPM & BHP.
Table 27 shows, at 2100 CFM & ESP= 0.8,
RPM = 712 & BHP = 1.17
X. Convert BHP (Step VIII) into fan motor heat.
Fan motor heat = 2.546* BHP/Motor Eff.4
Fan motor heat = 3.7 MBH
XI. Calculate RTU heating capacity.
Building heating load 85.0 MBH
Fan motor heat --3.7 MBH
Required heating capacity 81.3 MBH
XII. Select a gas heater.
Table 4 shows the heating capacities of the
48HCEA07 = 103.0 MBH. Select the 48HCEA07
XIII.Determine electrical requirements.
Table 50 shows the MCA and Breaker Size of a
48HC*A07 (without convenience outlet) as:
MCA = 32.0 amps & MOCP = 50.0 amps
Min. disconnect size: FLA = 31.0 & LRA = 148.
LEGEND
BHP — Break horsepower
FLA — Full load amps
LC — Latent capacity
LRA — Lock rotor amp
MBH — (1,000) BTUH
MCA — Min. circuit ampacity
MOCP — Max. over--- current protection
RPM — Revolutions per minute
RTU — Rooftop unit
SHC — Sensible heat capacity
TC — Total capacity
NOTES:
1. Selection software by Carrier saves time by performing
many of the steps above. Contact your Carrier sales
representative for assistance.
2. Unit ratings are gross capacities and do not include the
effect of evaporator fan motor heat. See Step XI. for de-
termining amount of evaporator fan motor heat to sub-
tract from total and sensible capacities to obtain net
cooling and net sensible capacities.
3. Selecting a unit with a SHC slightly lower than the
SHCLoad is often better than oversizing. Slightly lower
SHC’s will help control indoor humidity, and prevent
temperature swings.
4. Indoor fan motor efficiency is available in Table 41. Use
the decimal form in the equation, eg. 80% = .8.
48HC
29
TABLE 12 – COOLING CAPACITIES 1--STAGE COOLING 3 TONS
48HC*A04
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
900
Cfm
EA
(wb)
58 TC 32.1 32.1 36.3 30.8 30.8 34.9 29.4 29.4 33.4 28.0 28.0 31.7 26.3 26.3 29.8
SHC 27.8 32.1 36.3 26.7 30.8 34.9 25.5 29.4 33.4 24.2 28.0 31.7 22.8 26.3 29.8
62 TC 34.0 34.0 34.3 32.3 32.3 33.5 30.6 30.6 32.6 28.7 28.7 31.7 26.6 26.6 30.6
SHC 25.0 29.7 34.3 24.2 28.9 33.5 23.4 28.0 32.6 22.5 27.1 31.7 21.5 26.0 30.6
67 TC 37.3 37.3 37.3 35.5 35.5 35.5 33.6 33.6 33.6 31.5 31.5 31.5 29.2 29.2 29.2
SHC 20.7 25.4 30.0 20.0 24.6 29.3 19.2 23.8 28.4 18.3 22.9 27.6 17.4 22.0 26.6
72 TC 40.8 40.8 40.8 38.9 38.9 38.9 36.9 36.9 36.9 34.6 34.6 34.6 32.2 32.2 32.2
SHC 16.3 21.0 25.7 15.6 20.3 25.0 14.8 19.5 24.1 13.9 18.6 23.3 13.0 17.7 22.3
78 TC --- 43.9 43.9 --- 41.8 41.8 --- 39.6 39.6 --- 37.2 37.2 --- 34.6 34.6
SHC --- 17.4 22.4 --- 16.7 21.7 --- 15.9 20.8 --- 15.1 19.9 --- 14.2 19.0
1050
Cfm
EA
(wb)
58 TC 33.8 33.8 38.4 32.5 32.5 36.8 31.0 31.0 35.1 29.4 29.4 33.3 27.6 27.6 31.3
SHC 29.3 33.8 38.4 28.1 32.5 36.8 26.9 31.0 35.1 25.5 29.4 33.3 23.9 27.6 31.3
62 TC 35.1 35.1 37.5 33.3 33.3 36.6 31.5 31.5 35.7 29.6 29.6 34.5 27.7 27.7 32.6
SHC 26.9 32.2 37.5 26.0 31.3 36.6 25.1 30.4 35.7 24.1 29.3 34.5 22.7 27.7 32.6
67 TC 38.4 38.4 38.4 36.5 36.5 36.5 34.5 34.5 34.5 32.3 32.3 32.3 29.9 29.9 29.9
SHC 22.0 27.3 32.7 21.2 26.5 31.9 20.3 25.7 31.0 19.4 24.8 30.1 18.5 23.8 29.1
72 TC 42.0 42.0 42.0 40.0 40.0 40.0 37.8 37.8 37.8 35.5 35.5 35.5 32.9 32.9 32.9
SHC 16.9 22.3 27.6 16.1 21.5 26.9 15.3 20.7 26.0 14.4 19.8 25.1 13.5 18.8 24.2
78 TC --- 45.0 45.0 --- 42.9 42.9 --- 40.6 40.6 --- 38.0 38.0 --- 35.3 35.3
SHC --- 18.1 23.8 --- 17.4 23.0 --- 16.6 22.2 --- 15.7 21.3 --- 14.8 20.3
1200
Cfm
EA
(wb)
58 TC 35.3 35.3 40.0 33.9 33.9 38.4 32.3 32.3 36.6 30.6 30.6 34.7 28.7 28.7 32.5
SHC 30.6 35.3 40.0 29.4 33.9 38.4 28.0 32.3 36.6 26.5 30.6 34.7 24.9 28.7 32.5
62 TC 35.9 35.9 40.5 34.2 34.2 39.4 32.4 32.4 38.1 30.6 30.6 36.1 28.7 28.7 33.9
SHC 28.6 34.5 40.5 27.7 33.6 39.4 26.6 32.4 38.1 25.2 30.6 36.1 23.6 28.7 33.9
67 TC 39.3 39.3 39.3 37.3 37.3 37.3 35.2 35.2 35.2 32.9 32.9 32.9 30.5 30.5 31.6
SHC 23.1 29.1 35.2 22.3 28.3 34.4 21.4 27.5 33.5 20.5 26.6 32.6 19.5 25.6 31.6
72 TC 42.9 42.9 42.9 40.8 40.8 40.8 38.5 38.5 38.5 36.1 36.1 36.1 33.4 33.4 33.4
SHC 17.3 23.4 29.5 16.6 22.6 28.7 15.7 21.8 27.9 14.8 20.9 27.0 13.9 19.9 26.0
78 TC --- 45.9 45.9 --- 43.7 43.7 --- 41.3 41.3 --- 38.7 38.7 --- 35.9 35.9
SHC --- 18.8 25.1 --- 18.0 24.3 --- 17.2 23.4 --- 16.3 22.5 --- 15.4 21.5
1350
Cfm
EA
(wb)
58 TC 36.6 36.6 41.5 35.1 35.1 39.7 33.4 33.4 37.9 31.6 31.6 35.8 29.6 29.6 33.6
SHC 31.7 36.6 41.5 30.4 35.1 39.7 28.9 33.4 37.9 27.4 31.6 35.8 25.7 29.6 33.6
62 TC 36.7 36.7 43.2 35.1 35.1 41.3 33.4 33.4 39.4 31.6 31.6 37.3 29.6 29.6 34.9
SHC 30.2 36.7 43.2 28.8 35.1 41.3 27.5 33.4 39.4 26.0 31.6 37.3 24.4 29.6 34.9
67 TC 39.9 39.9 39.9 37.9 37.9 37.9 35.8 35.8 35.9 33.4 33.4 34.9 30.9 30.9 33.9
SHC 24.2 30.9 37.6 23.4 30.1 36.8 22.5 29.2 35.9 21.6 28.3 34.9 20.6 27.2 33.9
72 TC 43.6 43.6 43.6 41.4 41.4 41.4 39.1 39.1 39.1 36.6 36.6 36.6 33.9 33.9 33.9
SHC 17.8 24.5 31.3 17.0 23.7 30.5 16.1 22.9 29.6 15.2 22.0 28.7 14.3 21.0 27.7
78 TC --- 46.7 46.7 --- 44.4 44.4 --- 41.9 41.9 --- 39.2 39.2 --- 36.3 36.3
SHC --- 19.4 26.3 --- 18.6 25.5 --- 17.8 24.6 --- 16.9 23.7 --- 15.9 22.7
1500
Cfm
EA
(wb)
58 TC 37.7 37.7 42.7 36.1 36.1 40.9 34.3 34.3 38.9 32.5 32.5 36.8 30.4 30.4 34.4
SHC 32.6 37.7 42.7 31.3 36.1 40.9 29.8 34.3 38.9 28.1 32.5 36.8 26.3 30.4 34.4
62 TC 37.7 37.7 44.4 36.1 36.1 42.5 34.4 34.4 40.5 32.5 32.5 38.3 30.4 30.4 35.8
SHC 31.0 37.7 44.4 29.7 36.1 42.5 28.3 34.4 40.5 26.7 32.5 38.3 25.0 30.4 35.8
67 TC 40.5 40.5 40.5 38.4 38.4 39.1 36.2 36.2 38.2 33.8 33.8 37.2 31.2 31.2 36.1
SHC 25.2 32.6 40.0 24.4 31.7 39.1 23.5 30.8 38.2 22.5 29.9 37.2 21.5 28.8 36.1
72 TC 44.2 44.2 44.2 41.9 41.9 41.9 39.6 39.6 39.6 37.0 37.0 37.0 34.2 34.2 34.2
SHC 18.2 25.6 33.0 17.4 24.8 32.2 16.5 23.9 31.3 15.6 23.0 30.4 14.7 22.0 29.4
78 TC --- 47.2 47.2 --- 44.9 44.9 --- 42.3 42.3 --- 39.6 39.6 --- 36.7 36.7
SHC --- 19.9 27.5 --- 19.1 26.7 --- 18.3 25.8 --- 17.4 24.9 --- 16.4 23.9
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
30
TABLE 13 – COOLING CAPACITIES 1--STAGE COOLING 4 TONS
48HC*A05
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
1200
Cfm
EA
(wb)
58 TC 43.2 43.2 49.1 41.5 41.5 47.2 39.7 39.7 45.1 37.7 37.7 42.9 35.6 35.6 40.4
SHC 37.3 43.2 49.1 35.9 41.5 47.2 34.3 39.7 45.1 32.6 37.7 42.9 30.7 35.6 40.4
62 TC 45.9 45.9 46.0 43.7 43.7 45.0 41.3 41.3 43.8 38.8 38.8 42.6 36.0 36.0 41.2
SHC 33.5 39.8 46.0 32.5 38.7 45.0 31.3 37.6 43.8 30.1 36.3 42.6 28.8 35.0 41.2
67 TC 50.5 50.5 50.5 48.0 48.0 48.0 45.4 45.4 45.4 42.6 42.6 42.6 39.6 39.6 39.6
SHC 27.9 34.1 40.4 26.8 33.1 39.4 25.7 32.0 38.2 24.5 30.8 37.1 23.2 29.5 35.8
72 TC 55.4 55.4 55.4 52.7 52.7 52.7 49.9 49.9 49.9 46.8 46.8 46.8 43.5 43.5 43.5
SHC 22.0 28.4 34.7 21.0 27.3 33.7 19.9 26.2 32.5 18.7 25.0 31.3 17.4 23.8 30.1
78 TC --- 59.7 59.7 --- 56.8 56.8 --- 53.7 53.7 --- 50.4 50.4 --- 46.8 46.8
SHC --- 23.6 30.2 --- 22.6 29.2 --- 21.5 28.1 --- 20.3 26.8 --- 19.1 25.5
1400
Cfm
EA
(wb)
58 TC 45.6 45.6 51.9 43.8 43.8 49.8 41.9 41.9 47.6 39.7 39.7 45.1 37.3 37.3 42.4
SHC 39.4 45.6 51.9 37.9 43.8 49.8 36.2 41.9 47.6 34.3 39.7 45.1 32.3 37.3 42.4
62 TC 47.4 47.4 50.5 45.1 45.1 49.3 42.6 42.6 48.0 40.0 40.0 46.5 37.4 37.4 44.2
SHC 36.0 43.2 50.5 34.9 42.1 49.3 33.7 40.9 48.0 32.4 39.5 46.5 30.6 37.4 44.2
67 TC 52.1 52.1 52.1 49.5 49.5 49.5 46.7 46.7 46.7 43.7 43.7 43.7 40.5 40.5 40.5
SHC 29.5 36.8 44.0 28.4 35.7 42.9 27.3 34.5 41.8 26.0 33.3 40.5 24.7 32.0 39.2
72 TC 57.1 57.1 57.1 54.3 54.3 54.3 51.2 51.2 51.2 48.0 48.0 48.0 44.5 44.5 44.5
SHC 22.8 30.1 37.4 21.7 29.0 36.3 20.5 27.8 35.1 19.3 26.6 33.9 18.0 25.3 32.6
78 TC --- 61.4 61.4 --- 58.3 58.3 --- 55.1 55.1 --- 51.6 51.6 --- 47.8 47.8
SHC --- 24.6 32.2 --- 23.5 31.1 --- 22.4 29.9 --- 21.2 28.7 --- 19.9 27.4
1600
Cfm
EA
(wb)
58 TC 47.7 47.7 54.2 45.8 45.8 52.0 43.7 43.7 49.6 41.3 41.3 47.0 38.8 38.8 44.1
SHC 41.2 47.7 54.2 39.5 45.8 52.0 37.7 43.7 49.6 35.7 41.3 47.0 33.5 38.8 44.1
62 TC 48.7 48.7 54.5 46.3 46.3 53.2 43.7 43.7 51.7 41.4 41.4 48.9 38.8 38.8 45.9
SHC 38.3 46.4 54.5 37.1 45.2 53.2 35.8 43.7 51.7 33.9 41.4 48.9 31.8 38.8 45.9
67 TC 53.3 53.3 53.3 50.6 50.6 50.6 47.7 47.7 47.7 44.6 44.6 44.6 41.2 41.2 42.6
SHC 31.0 39.2 47.5 29.9 38.1 46.3 28.7 37.0 45.2 27.5 35.7 43.9 26.2 34.4 42.6
72 TC 58.4 58.4 58.4 55.4 55.4 55.4 52.3 52.3 52.3 48.9 48.9 48.9 45.2 45.2 45.2
SHC 23.4 31.7 39.9 22.3 30.6 38.8 21.1 29.4 37.6 19.9 28.2 36.4 18.6 26.8 35.1
78 TC --- 62.7 62.7 --- 59.5 59.5 --- 56.1 56.1 --- 52.5 52.5 --- 48.6 48.6
SHC --- 25.5 34.0 --- 24.4 32.9 --- 23.2 31.7 --- 22.0 30.4 --- 20.7 29.1
1800
Cfm
EA
(wb)
58 TC 49.5 49.5 56.2 47.4 47.4 53.9 45.2 45.2 51.3 42.7 42.7 48.5 40.1 40.1 45.5
SHC 42.8 49.5 56.2 41.0 47.4 53.9 39.0 45.2 51.3 36.9 42.7 48.5 34.6 40.1 45.5
62 TC 49.8 49.8 58.1 47.5 47.5 56.1 45.2 45.2 53.4 42.8 42.8 50.5 40.1 40.1 47.4
SHC 40.4 49.2 58.1 38.8 47.5 56.1 37.0 45.2 53.4 35.0 42.8 50.5 32.8 40.1 47.4
67 TC 54.3 54.3 54.3 51.5 51.5 51.5 48.5 48.5 48.5 45.3 45.3 47.1 41.8 41.8 45.7
SHC 32.5 41.7 50.8 31.4 40.5 49.7 30.2 39.3 48.5 28.9 38.0 47.1 27.5 36.6 45.7
72 TC 59.4 59.4 59.4 56.3 56.3 56.3 53.1 53.1 53.1 49.6 49.6 49.6 45.8 45.8 45.8
SHC 24.0 33.2 42.4 22.9 32.1 41.3 21.7 30.9 40.1 20.4 29.6 38.8 19.1 28.3 37.5
78 TC --- 63.8 63.8 --- 60.5 60.5 --- 57.0 57.0 --- 53.2 53.2 --- 49.2 49.2
SHC --- 26.3 35.8 --- 25.2 34.6 --- 24.0 33.4 --- 22.8 32.1 --- 21.5 30.8
2000
Cfm
EA
(wb)
58 TC 51.0 51.0 58.0 48.8 48.8 55.5 46.5 46.5 52.8 43.9 43.9 49.9 41.1 41.1 46.7
SHC 44.1 51.0 58.0 42.2 48.8 55.5 40.2 46.5 52.8 37.9 43.9 49.9 35.5 41.1 46.7
62 TC 51.1 51.1 60.4 48.9 48.9 57.8 46.5 46.5 55.0 44.0 44.0 51.9 41.1 41.1 48.6
SHC 41.8 51.1 60.4 40.0 48.9 57.8 38.1 46.5 55.0 36.0 44.0 51.9 33.7 41.1 48.6
67 TC 55.1 55.1 55.1 52.1 52.1 52.9 49.1 49.1 51.6 45.8 45.8 50.2 42.3 42.3 48.7
SHC 33.9 44.0 54.1 32.7 42.8 52.9 31.5 41.5 51.6 30.2 40.2 50.2 28.8 38.8 48.7
72 TC 60.3 60.3 60.3 57.1 57.1 57.1 53.7 53.7 53.7 50.1 50.1 50.1 46.3 46.3 46.3
SHC 24.5 34.7 44.8 23.4 33.5 43.6 22.2 32.3 42.4 21.0 31.1 41.2 19.6 29.7 39.8
78 TC --- 64.6 64.6 --- 61.2 61.2 --- 57.6 57.6 --- 53.8 53.8 --- 49.7 49.7
SHC --- 27.1 37.5 --- 26.0 36.3 --- 24.8 35.1 --- 23.5 33.8 --- 22.2 32.4
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
31
TABLE 14 – COOLING CAPACITIES 1--STAGE COOLING 5 TONS
48HC*A06
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
1500
Cfm
EA
(wb)
58 TC 53.4 53.4 60.6 51.3 51.3 58.2 49.0 49.0 55.6 46.5 46.5 52.7 43.7 43.7 49.5
SHC 46.3 53.4 60.6 44.5 51.3 58.2 42.5 49.0 55.6 40.3 46.5 52.7 37.9 43.7 49.5
62 TC 55.6 55.6 58.2 52.9 52.9 56.9 50.0 50.0 55.5 46.9 46.9 53.9 43.8 43.8 51.6
SHC 42.0 50.1 58.2 40.7 48.8 56.9 39.4 47.4 55.5 37.9 45.9 53.9 36.0 43.8 51.6
67 TC 60.8 60.8 60.8 57.8 57.8 57.8 54.6 54.6 54.6 51.1 51.1 51.1 47.4 47.4 47.4
SHC 34.4 42.6 50.7 33.2 41.3 49.4 31.8 39.9 48.1 30.4 38.5 46.6 28.9 37.0 45.1
72 TC 66.6 66.6 66.6 63.2 63.2 63.2 59.7 59.7 59.7 55.9 55.9 55.9 51.8 51.8 51.8
SHC 26.7 34.8 43.0 25.4 33.6 41.7 24.1 32.2 40.4 22.6 30.8 38.9 21.1 29.3 37.4
78 TC --- 71.4 71.4 --- 67.9 67.9 --- 64.0 64.0 --- 59.9 59.9 --- 55.5 55.5
SHC --- 28.5 36.7 --- 27.2 35.5 --- 25.9 34.2 --- 24.5 32.7 --- 23.0 31.3
1750
Cfm
EA
(wb)
58 TC 56.3 56.3 63.8 54.0 54.0 61.2 51.5 51.5 58.3 48.7 48.7 55.2 45.7 45.7 51.8
SHC 48.8 56.3 63.8 46.8 54.0 61.2 44.6 51.5 58.3 42.2 48.7 55.2 39.6 45.7 51.8
62 TC 57.3 57.3 64.0 54.5 54.5 62.5 51.6 51.6 60.7 48.8 48.8 57.5 45.8 45.8 53.9
SHC 45.3 54.7 64.0 44.0 53.3 62.5 42.4 51.6 60.7 40.1 48.8 57.5 37.6 45.8 53.9
67 TC 62.5 62.5 62.5 59.3 59.3 59.3 55.9 55.9 55.9 52.3 52.3 52.3 48.3 48.3 49.7
SHC 36.6 46.0 55.4 35.3 44.7 54.1 33.9 43.3 52.7 32.4 41.8 51.3 30.9 40.3 49.7
72 TC 68.3 68.3 68.3 64.8 64.8 64.8 61.0 61.0 61.0 57.0 57.0 57.0 52.7 52.7 52.7
SHC 27.5 37.0 46.5 26.2 35.7 45.2 24.9 34.4 43.8 23.4 32.9 42.4 21.9 31.4 40.8
78 TC --- 73.2 73.2 --- 69.4 69.4 --- 65.4 65.4 --- 61.1 61.1 --- 56.5 56.5
SHC --- 29.7 39.3 --- 28.4 38.0 --- 27.1 36.7 --- 25.6 35.2 --- 24.1 33.7
2000
Cfm
EA
(wb)
58 TC 58.7 58.7 66.5 56.2 56.2 63.7 53.5 53.5 60.6 50.6 50.6 57.3 47.3 47.3 53.7
SHC 50.9 58.7 66.5 48.7 56.2 63.7 46.4 53.5 60.6 43.8 50.6 57.3 41.0 47.3 53.7
62 TC 58.8 58.8 69.2 56.3 56.3 66.3 53.6 53.6 63.1 50.6 50.6 59.6 47.4 47.4 55.8
SHC 48.3 58.8 69.2 46.3 56.3 66.3 44.0 53.6 63.1 41.6 50.6 59.6 39.0 47.4 55.8
67 TC 63.8 63.8 63.8 60.4 60.4 60.4 56.9 56.9 57.3 53.1 53.1 55.8 49.1 49.1 54.1
SHC 38.6 49.3 60.1 37.3 48.0 58.7 35.9 46.6 57.3 34.4 45.1 55.8 32.8 43.4 54.1
72 TC 69.6 69.6 69.6 65.9 65.9 65.9 62.1 62.1 62.1 57.9 57.9 57.9 53.5 53.5 53.5
SHC 28.4 39.1 49.9 27.0 37.8 48.6 25.7 36.4 47.2 24.2 35.0 45.7 22.6 33.4 44.2
78 TC --- 74.5 74.5 --- 70.6 70.6 --- 66.5 66.5 --- 62.0 62.0 --- --- ---
SHC --- 30.8 41.8 --- 29.5 40.4 --- 28.2 39.0 --- 26.7 37.6 --- --- ---
2250
Cfm
EA
(wb)
58 TC 60.7 60.7 68.8 58.1 58.1 65.8 55.2 55.2 62.6 52.1 52.1 59.1 48.7 48.7 55.2
SHC 52.6 60.7 68.8 50.3 58.1 65.8 47.9 55.2 62.6 45.2 52.1 59.1 42.2 48.7 55.2
62 TC 60.8 60.8 71.6 58.1 58.1 68.5 55.3 55.3 65.1 52.2 52.2 61.4 48.7 48.7 57.4
SHC 50.0 60.8 71.6 47.8 58.1 68.5 45.4 55.3 65.1 42.9 52.2 61.4 40.1 48.7 57.4
67 TC 64.7 64.7 64.7 61.3 61.3 63.2 57.7 57.7 61.7 53.8 53.8 60.1 49.7 49.7 58.3
SHC 40.6 52.6 64.5 39.2 51.2 63.2 37.8 49.7 61.7 36.2 48.2 60.1 34.6 46.5 58.3
72 TC 70.6 70.6 70.6 66.8 66.8 66.8 62.8 62.8 62.8 58.6 58.6 58.6 54.0 54.0 54.0
SHC 29.1 41.2 53.3 27.8 39.9 51.9 26.4 38.4 50.5 24.9 37.0 49.0 23.3 35.4 47.4
78 TC --- 75.6 75.6 --- 71.6 71.6 --- 67.3 67.3 --- --- --- --- --- ---
SHC --- 31.9 44.1 --- 30.6 42.8 --- 29.2 41.4 --- --- --- --- --- ---
2500
Cfm
EA
(wb)
58 TC 62.5 62.5 70.8 59.7 59.7 67.6 56.7 56.7 64.2 53.4 53.4 60.5 49.9 49.9 56.5
SHC 54.1 62.5 70.8 51.7 59.7 67.6 49.1 56.7 64.2 46.3 53.4 60.5 43.2 49.9 56.5
62 TC 62.5 62.5 73.6 59.7 59.7 70.3 56.7 56.7 66.8 53.5 53.5 63.0 49.9 49.9 58.8
SHC 51.4 62.5 73.6 49.1 59.7 70.3 46.6 56.7 66.8 43.9 53.5 63.0 41.0 49.9 58.8
67 TC 65.5 65.5 68.9 62.0 62.0 67.4 58.3 58.3 65.9 54.4 54.4 64.2 50.2 50.2 62.2
SHC 42.5 55.7 68.9 41.1 54.3 67.4 39.6 52.7 65.9 38.0 51.1 64.2 36.3 49.2 62.2
72 TC 71.4 71.4 71.4 67.5 67.5 67.5 63.4 63.4 63.4 59.1 59.1 59.1 54.4 54.4 54.4
SHC 29.9 43.2 56.5 28.5 41.8 55.2 27.1 40.4 53.7 25.6 38.9 52.2 24.0 37.3 50.6
78 TC --- 76.4 76.4 --- 72.3 72.3 --- --- --- --- --- --- --- --- ---
SHC --- 33.0 46.4 --- 31.6 45.1 --- --- --- --- --- --- --- --- ---
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
32
TABLE 15 – COOLING CAPACITIES 1--STAGE COOLING 6 TONS
48HC*A07
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
1800
Cfm
EA
(wb)
58 THC 64.1 64.1 72.5 61.8 61.8 69.9 59.2 59.2 67 56.3 56.3 63.7 53.2 53.2 60.2
SHC 55.7 64.1 72.5 53.7 61.8 69.9 51.4 59.2 67 48.9 56.3 63.7 46.2 53.2 60.2
62 THC 67.9 67.9 68.5 64.9 64.9 67 61.5 61.5 65.3 57.9 57.9 63.5 54 54 61.4
SHC 50.2 59.4 68.5 48.8 57.9 67 47.1 56.2 65.3 45.4 54.4 63.5 43.4 52.4 61.4
67 THC 74.8 74.8 74.8 71.5 71.5 71.5 67.8 67.8 67.8 63.8 63.8 63.8 59.5 59.5 59.5
SHC 41.8 50.9 60.1 40.3 49.5 58.7 38.8 47.9 57.1 37.1 46.2 55.4 35.3 44.4 53.6
72 THC 82.2 82.2 82.2 78.7 78.7 78.7 74.7 74.7 74.7 70.4 70.4 70.4 65.6 65.6 65.6
SHC 33 42.3 51.6 31.6 40.9 50.2 30.1 39.3 48.6 28.4 37.7 46.9 26.7 35.9 45.1
78 THC --- 88.7 88.7 --- 84.8 84.8 --- 80.6 80.6 --- 76 76 --- 70.9 70.9
SHC --- 35.3 45.2 --- 33.9 43.7 --- 32.4 42 --- 30.7 40.3 --- 28.9 38.5
2100
Cfm
EA
(wb)
58 THC 67.6 67.6 76.5 65.1 65.1 73.7 62.3 62.3 70.5 59.3 59.3 67.1 55.9 55.9 63.2
SHC 58.7 67.6 76.5 56.6 65.1 73.7 54.1 62.3 70.5 51.5 59.3 67.1 48.5 55.9 63.2
62 THC 70.1 70.1 74.9 67 67 73.2 63.5 63.5 71.3 59.7 59.7 69.1 56 56 65.8
SHC 53.9 64.4 74.9 52.4 62.8 73.2 50.6 61 71.3 48.7 58.9 69.1 46.2 56 65.8
67 THC 77.1 77.1 77.1 73.6 73.6 73.6 69.7 69.7 69.7 65.5 65.5 65.5 60.9 60.9 60.9
SHC 44.2 54.8 65.3 42.7 53.3 63.9 41.2 51.7 62.3 39.4 50 60.5 37.6 48.1 58.6
72 THC 84.7 84.7 84.7 80.9 80.9 80.9 76.8 76.8 76.8 72.2 72.2 72.2 67.2 67.2 67.2
SHC 34.2 44.8 55.5 32.7 43.4 54 31.1 41.8 52.4 29.5 40.1 50.7 27.6 38.2 48.8
76 THC --- 91.3 91.3 --- 87.2 87.2 --- 82.7 82.7 --- 77.8 77.8 --- 72.5 72.5
SHC --- 36.7 47.8 --- 35.3 46.3 --- 33.7 44.7 --- 32 43 --- 30.2 41.1
2400
Cfm
EA
(wb)
58 THC 70.6 70.6 79.9 68 68 76.9 65 65 73.5 61.7 61.7 69.8 58.1 58.1 65.8
SHC 61.3 70.6 79.9 59 68 76.9 56.4 65 73.5 53.6 61.7 69.8 50.5 58.1 65.8
62 THC 72 72 80.6 68.7 68.7 78.7 65.2 65.2 76.6 61.8 61.8 72.6 58.2 58.2 68.4
SHC 57.3 69 80.6 55.6 67.2 78.7 53.7 65.2 76.6 50.9 61.8 72.6 48 58.2 68.4
67 THC 78.9 78.9 78.9 75.2 75.2 75.2 71.2 71.2 71.2 66.8 66.8 66.8 62 62 63.4
SHC 46.5 58.4 70.3 45 56.9 68.8 43.4 55.3 67.2 41.6 53.5 65.4 39.7 51.6 63.4
72 THC 86.6 86.6 86.6 82.7 82.7 82.7 78.3 78.3 78.3 73.6 73.6 73.6 68.4 68.4 68.4
SHC 35.2 47.2 59.2 33.7 45.7 57.7 32.1 44.1 56 30.4 42.3 54.3 28.5 40.5 52.4
78 THC --- 93.3 93.3 --- 89 89 --- 84.4 84.4 --- 79.3 79.3 --- 73.7 73.7
SHC --- 38 50.4 --- 36.6 48.9 --- 35 47.3 --- 33.3 45.5 --- 31.4 43.6
2700
Cfm
EA
(wb)
58 THC 73.2 73.2 82.8 70.4 70.4 79.6 67.3 67.3 76.1 63.8 63.8 72.2 60 60 67.9
SHC 63.6 73.2 82.8 61.1 70.4 79.6 58.4 67.3 76.1 55.4 63.8 72.2 52.1 60 67.9
62 THC 73.7 73.7 85.5 70.5 70.5 82.8 67.3 67.3 79.1 63.9 63.9 75.1 60.1 60.1 70.6
SHC 60.2 72.9 85.5 58.1 70.5 82.8 55.5 67.3 79.1 52.7 63.9 75.1 49.5 60.1 70.6
67 THC 80.3 80.3 80.3 76.5 76.5 76.5 72.4 72.4 72.4 67.8 67.8 70 62.9 62.9 67.9
SHC 48.7 61.9 75.1 47.1 60.4 73.6 45.5 58.7 71.9 43.7 56.8 70 41.7 54.8 67.9
72 THC 88.2 88.2 88.2 84 84 84 79.6 79.6 79.6 74.6 74.6 74.6 69.3 69.3 69.3
SHC 36.1 49.4 62.7 34.6 47.9 61.2 33 46.2 59.5 31.2 44.5 57.7 29.3 42.6 55.8
78 THC --- 94.9 94.9 --- 90.4 90.4 --- 85.6 85.6 --- 80.4 80.4 --- 74.7 74.7
SHC --- 39.2 52.9 --- 37.7 51.4 --- 36.1 49.7 --- 34.4 47.9 --- 32.5 46
3000
Cfm
EA
(wb)
58 THC 75.4 75.4 85.3 72.5 72.5 82 69.2 69.2 78.3 65.6 65.6 74.2 61.7 61.7 69.8
SHC 65.5 75.4 85.3 62.9 72.5 82 60.1 69.2 78.3 57 65.6 74.2 53.5 61.7 69.8
62 THC 75.5 75.5 88.7 72.5 72.5 85.3 69.3 69.3 81.4 65.7 65.7 77.2 61.7 61.7 72.5
SHC 62.2 75.5 88.7 59.8 72.5 85.3 57.1 69.3 81.4 54.1 65.7 77.2 50.9 61.7 72.5
67 THC 81.4 81.4 81.4 77.5 77.5 78.1 73.3 73.3 76.4 68.7 68.7 74.4 63.7 63.7 72.2
SHC 50.7 65.2 79.7 49.2 63.7 78.1 47.5 61.9 76.4 45.6 60 74.4 43.6 57.9 72.2
72 THC 89.4 89.4 89.4 85.2 85.2 85.2 80.5 80.5 80.5 75.5 75.5 75.5 70.1 70.1 70.1
SHC 36.9 51.5 66.1 35.4 50 64.6 33.8 48.3 62.9 32 46.5 61.1 30.1 44.6 59.1
78 THC --- 96.1 96.1 --- 91.6 91.6 --- 86.7 86.7 --- 81.3 81.3 --- 75.5 75.5
SHC --- 40.4 55.3 --- 38.9 53.8 --- 37.2 52.1 --- 35.5 50.3 --- 33.6 48.3
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
33
TABLE 16 – COOLING CAPACITIES 2--STAGE COOLING 7.5 TONS
48HC*D08
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
2250
Cfm
EA
(wb)
58 THC 81 81 91.8 77.9 77.9 88.4 74.7 74.7 84.6 71.1 71.1 80.6 67.3 67.3 76.3
SHC 70.2 81 91.8 67.5 77.9 88.4 64.7 74.7 84.6 61.6 71.1 80.6 58.3 67.3 76.3
62 THC 85.1 85.1 87.2 81.1 81.1 85.3 76.9 76.9 83.2 72.5 72.5 81 67.8 67.8 78.5
SHC 63.3 75.3 87.2 61.4 73.4 85.3 59.5 71.3 83.2 57.3 69.2 81 55 66.7 78.5
67 THC 93.3 93.3 93.3 89 89 89 84.3 84.3 84.3 79.4 79.4 79.4 74.1 74.1 74.1
SHC 52.3 64.2 76.2 50.4 62.4 74.4 48.4 60.4 72.4 46.4 58.3 70.3 44.2 56.2 68.1
72 THC 102.3 102.3 102.3 97.5 97.5 97.5 92.5 92.5 92.5 87.1 87.1 87.1 81.3 81.3 81.3
SHC 40.9 53 65 39 51.1 63.1 37.1 49.2 61.2 35.1 47.1 59.1 32.9 44.9 57
76 THC --- 110 110 --- 104.8 104.8 --- 99.4 99.4 --- 93.5 93.5 --- 87.3 87.3
SHC --- 43.7 56.1 --- 41.9 54.2 --- 39.9 52.2 --- 37.9 50.2 --- 35.8 48
2625
Cfm
EA
(wb)
58 THC 85.4 85.4 96.9 82.1 82.1 93.1 78.6 78.6 89.1 74.7 74.7 84.7 70.5 70.5 80
SHC 74 85.4 96.9 71.2 82.1 93.1 68.1 78.6 89.1 64.7 74.7 84.7 61.1 70.5 80
62 THC 87.8 87.8 95.7 83.7 83.7 93.6 79.3 79.3 91.3 75 75 87.8 70.6 70.6 83.2
SHC 68.2 82 95.7 66.2 79.9 93.6 64.1 77.7 91.3 61.3 74.6 87.8 58 70.6 83.2
67 THC 96 96 96 91.4 91.4 91.4 86.5 86.5 86.5 81.3 81.3 81.3 75.8 75.8 75.8
SHC 55.4 69.3 83.2 53.5 67.4 81.2 51.5 65.4 79.2 49.4 63.2 77.1 47.2 61 74.8
72 THC 105.2 105.2 105.2 100.1 100.1 100.1 94.8 94.8 94.8 89.1 89.1 89.1 83 83 83
SHC 42.3 56.2 70.2 40.4 54.3 68.2 38.4 52.3 66.2 36.3 50.2 64.1 34.1 48 61.9
76 THC --- 112.9 112.9 --- 107.5 107.5 --- 101.7 101.7 --- 95.6 95.6 --- 89.1 89.1
SHC --- 45.5 59.8 --- 43.6 57.8 --- 41.7 55.8 --- 39.6 53.7 --- 37.4 51.5
3000
Cfm
EA
(wb)
58 THC 89.2 89.2 101.1 85.6 85.6 97.1 81.8 81.8 92.8 77.7 77.7 88.1 73.2 73.2 83
SHC 77.3 89.2 101.1 74.2 85.6 97.1 70.9 81.8 92.8 67.3 77.7 88.1 63.5 73.2 83
62 THC 90.1 90.1 103.5 86.1 86.1 100.3 81.9 81.9 96.5 77.8 77.8 91.6 73.3 73.3 86.4
SHC 72.7 88.1 103.5 70.1 85.2 100.3 67.3 81.9 96.5 63.9 77.8 91.6 60.2 73.3 86.4
67 THC 98.1 98.1 98.1 93.3 93.3 93.3 88.2 88.2 88.2 82.8 82.8 83.6 77 77 81.3
SHC 58.4 74.1 89.9 56.5 72.2 87.9 54.4 70.1 85.8 52.3 67.9 83.6 50 65.6 81.3
72 THC 107.3 107.3 107.3 102.1 102.1 102.1 96.5 96.5 96.5 90.6 90.6 90.6 84.3 84.3 84.3
SHC 43.5 59.3 75.1 41.6 57.3 73.1 39.5 55.3 71.1 37.4 53.2 69 35.2 50.9 66.7
76 THC --- 115.2 115.2 --- 109.5 109.5 --- 103.5 103.5 --- 97.2 97.2 --- 90.4 90.4
SHC --- 47.2 63.2 --- 45.3 61.3 --- 43.3 59.3 --- 41.2 57.1 --- 38.9 54.8
3375
Cfm
EA
(wb)
58 THC 92.4 92.4 104.7 88.6 88.6 100.4 84.6 84.6 95.9 80.2 80.2 90.9 75.5 75.5 85.6
SHC 80 92.4 104.7 76.8 88.6 100.4 73.3 84.6 95.9 69.5 80.2 90.9 65.4 75.5 85.6
62 THC 92.5 92.5 109 88.7 88.7 104.5 84.6 84.6 99.7 80.3 80.3 94.6 75.6 75.6 89
SHC 76 92.5 109 72.9 88.7 104.5 69.6 84.6 99.7 66 80.3 94.6 62.1 75.6 89
67 THC 99.7 99.7 99.7 94.8 94.8 94.8 89.5 89.5 92.2 84 84 89.9 78 78 87.4
SHC 61.3 78.8 96.4 59.3 76.8 94.3 57.2 74.7 92.2 55 72.4 89.9 52.6 70 87.4
72 THC 109 109 109 103.6 103.6 103.6 97.8 97.8 97.8 91.8 91.8 91.8 85.3 85.3 85.3
SHC 44.6 62.2 79.9 42.7 60.3 77.9 40.6 58.2 75.8 38.5 56.1 73.6 36.2 53.8 71.3
76 THC --- 116.9 116.9 --- 111.1 111.1 --- 104.9 104.9 --- 98.4 98.4 --- 91.5 91.5
SHC --- 48.8 66.6 --- 46.8 64.6 --- 44.8 62.6 --- 42.7 60.4 --- 40.4 58.1
3750
Cfm
EA
(wb)
58 THC 95.1 95.1 107.8 91.2 91.2 103.3 86.9 86.9 98.5 82.3 82.3 93.3 77.4 77.4 87.8
SHC 82.4 95.1 107.8 79 91.2 103.3 75.3 86.9 98.5 71.3 82.3 93.3 67.1 77.4 87.8
62 THC 95.2 95.2 112.2 91.2 91.2 107.5 87 87 102.5 82.4 82.4 97.1 77.5 77.5 91.3
SHC 78.2 95.2 112.2 75 91.2 107.5 71.5 87 102.5 67.7 82.4 97.1 63.7 77.5 91.3
67 THC 101.1 101.1 102.6 96 96 100.5 90.6 90.6 98.3 84.9 84.9 95.9 78.9 78.9 93.2
SHC 64 83.3 102.6 62 81.2 100.5 59.8 79.1 98.3 57.6 76.7 95.9 55.1 74.2 93.2
72 THC 110.4 110.4 110.4 104.8 104.8 104.8 98.9 98.9 98.9 92.7 92.7 92.7 86.1 86.1 86.1
SHC 45.7 65.1 84.5 43.7 63.1 82.5 41.7 61 80.4 39.5 58.8 78.2 37.2 56.5 75.9
76 THC --- 118.3 118.3 --- 112.4 112.4 --- 106 106 --- 99.4 99.4 --- 92.3 92.3
SHC --- 50.3 69.9 --- 48.3 67.9 --- 46.2 65.8 --- 44.1 63.6 --- 41.8 61.3
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
34
TABLE 17 – COOLING CAPACITIES 2--STAGE COOLING 8.5 TONS
48HC*D09
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
2550
Cfm
EA
(wb)
58 THC 90.5 90.5 102.4 87 87 98.5 83.2 83.2 94.2 79.1 79.1 89.6 74.7 74.7 84.6
SHC 78.6 90.5 102.4 75.5 87 98.5 72.2 83.2 94.2 68.7 79.1 89.6 64.8 74.7 84.6
62 THC 94.8 94.8 98.1 90.2 90.2 95.8 85.4 85.4 93.4 80.3 80.3 90.8 74.9 74.9 87.8
SHC 71.2 84.6 98.1 69.1 82.4 95.8 66.8 80.1 93.4 64.3 77.5 90.8 61.6 74.7 87.8
67 THC 104 104 104 99 99 99 93.7 93.7 93.7 88 88 88 81.9 81.9 81.9
SHC 58.7 72.2 85.7 56.6 70 83.5 54.3 67.8 81.3 52 65.4 78.9 49.5 62.9 76.4
72 THC 114 114 114 108.5 108.5 108.5 102.7 102.7 102.7 96.5 96.5 96.5 89.8 89.8 89.8
SHC 45.8 59.3 72.9 43.7 57.2 70.8 41.4 55 68.5 39.1 52.7 66.2 36.7 50.2 63.7
76 THC --- 122.4 122.4 --- 116.5 116.5 --- 110.3 110.3 --- 103.7 103.7 --- 96.5 96.5
SHC --- 48.8 62.8 --- 46.7 60.6 --- 44.5 58.4 --- 42.2 56 --- 39.8 53.5
2975
Cfm
EA
(wb)
58 THC 95.4 95.4 108 91.6 91.6 103.7 87.5 87.5 99 83.1 83.1 94 78.3 78.3 88.6
SHC 82.8 95.4 108 79.5 91.6 103.7 75.9 87.5 99 72.1 83.1 94 68 78.3 88.6
62 THC 97.7 97.7 107.4 93 93 104.9 88.1 88.1 102.1 83.2 83.2 97.9 78.4 78.4 92.2
SHC 76.7 92 107.4 74.3 89.6 104.9 71.8 86.9 102.1 68.6 83.2 97.9 64.6 78.4 92.2
67 THC 106.9 106.9 106.9 101.6 101.6 101.6 96 96 96 90.1 90.1 90.1 83.7 83.7 83.9
SHC 62.3 77.8 93.4 60.1 75.6 91.2 57.8 73.3 88.9 55.4 70.9 86.5 52.8 68.3 83.9
72 THC 117 117 117 111.2 111.2 111.2 105.1 105.1 105.1 98.6 98.6 98.6 91.7 91.7 91.7
SHC 47.3 62.9 78.6 45.1 60.8 76.4 42.9 58.5 74.1 40.5 56.1 71.7 38 53.6 69.2
76 THC --- 125.6 125.6 --- 119.4 119.4 --- 112.8 112.8 --- 105.9 105.9 --- 98.4 98.4
SHC --- 50.8 66.8 --- 48.7 64.6 --- 46.4 62.3 --- 44.1 59.9 --- 41.6 57.4
3400
Cfm
EA
(wb)
58 THC 99.5 99.5 112.7 95.4 95.4 108 91 91 103 86.3 86.3 97.7 81.2 81.2 91.9
SHC 86.4 99.5 112.7 82.8 95.4 108 79 91 103 74.9 86.3 97.7 70.5 81.2 91.9
62 THC 100.3 100.3 115.8 95.6 95.6 112.4 91.2 91.2 107.2 86.4 86.4 101.6 81.3 81.3 95.6
SHC 81.5 98.6 115.8 78.7 95.6 112.4 75.1 91.2 107.2 71.2 86.4 101.6 67 81.3 95.6
67 THC 109.1 109.1 109.1 103.6 103.6 103.6 97.8 97.8 97.8 91.6 91.6 93.7 85 85 90.9
SHC 65.6 83.2 100.8 63.4 81 98.6 61 78.6 96.2 58.6 76.1 93.7 55.9 73.4 90.9
72 THC 119.3 119.3 119.3 113.3 113.3 113.3 107 107 107 100.3 100.3 100.3 93 93 93
SHC 48.7 66.4 84.1 46.5 64.2 81.8 44.2 61.8 79.5 41.8 59.4 77.1 39.2 56.9 74.5
76 THC --- 128 128 --- 121.5 121.5 --- 114.7 114.7 --- 107.5 107.5 --- 99.8 99.8
SHC --- 52.6 70.6 --- 50.5 68.4 --- 48.2 66.1 --- 45.8 63.6 --- 43.3 61.1
3825
Cfm
EA
(wb)
58 THC 103 103 116.6 98.7 98.7 111.7 94 94 106.4 89 89 100.8 83.6 83.6 94.7
SHC 89.4 103 116.6 85.6 98.7 111.7 81.6 94 106.4 77.3 89 100.8 72.6 83.6 94.7
62 THC 103.1 103.1 121.3 98.8 98.8 116.1 94.1 94.1 110.7 89.1 89.1 104.8 83.7 83.7 98.4
SHC 85 103.1 121.3 81.4 98.8 116.1 77.5 94.1 110.7 73.4 89.1 104.8 69 83.7 98.4
67 THC 110.9 110.9 110.9 105.2 105.2 105.7 99.2 99.2 103.2 92.9 92.9 100.5 86.1 86.1 97.6
SHC 68.8 88.4 108 66.5 86.1 105.7 64.1 83.7 103.2 61.6 81.1 100.5 58.9 78.3 97.6
72 THC 121.2 121.2 121.2 114.9 114.9 114.9 108.4 108.4 108.4 101.5 101.5 101.5 94.1 94.1 94.1
SHC 50 69.7 89.4 47.7 67.4 87.1 45.4 65.1 84.7 43 62.6 82.3 40.4 60 79.6
76 THC --- 129.8 129.8 --- 123.2 123.2 --- 116.2 116.2 --- 108.8 108.8 --- 100.9 100.9
SHC --- 54.4 74.3 --- 52.2 72.1 --- 49.9 69.7 --- 47.5 67.3 --- 44.9 64.7
4250
Cfm
EA
(wb)
58 THC 106 106 119.9 101.4 101.4 114.8 96.6 96.6 109.3 91.3 91.3 103.4 85.7 85.7 97
SHC 92 106 119.9 88 101.4 114.8 83.8 96.6 109.3 79.3 91.3 103.4 74.4 85.7 97
62 THC 106.1 106.1 124.7 101.5 101.5 119.4 96.6 96.6 113.6 91.4 91.4 107.5 85.7 85.7 100.8
SHC 87.4 106.1 124.7 83.6 101.5 119.4 79.6 96.6 113.6 75.3 91.4 107.5 70.6 85.7 100.8
67 THC 112.3 112.3 114.9 106.5 106.5 112.5 100.4 100.4 109.9 93.9 93.9 107 87.1 87.1 103.8
SHC 71.8 93.4 114.9 69.5 91 112.5 67 88.5 109.9 64.4 85.7 107 61.6 82.7 103.8
72 THC 122.6 122.6 122.6 116.2 116.2 116.2 109.5 109.5 109.5 102.5 102.5 102.5 94.9 94.9 94.9
SHC 51.2 72.8 94.5 48.9 70.5 92.2 46.6 68.2 89.8 44.1 65.7 87.3 41.5 63.1 84.6
76 THC --- 131.3 131.3 --- 124.5 124.5 --- 117.4 117.4 --- 109.8 109.8 --- 101.8 101.8
SHC --- 56 77.9 --- 53.8 75.6 --- 51.5 73.3 --- 49.1 70.8 --- 46.5 68.1
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
35
TABLE 18 – COOLING CAPACITIES 2--STAGE COOLING 10 TONS
48HC*D12
AMBIENT TEMPERATURE
85 95 105 115 125
EA (dB) EA (dB) EA (dB) EA (dB) EA (dB)
75 80 85 75 80 85 75 80 85 75 80 85 75 80 85
3000
Cfm
EA
(wb)
58 THC 104.3 104.3 118.5 99.5 99.5 113 93.4 93.4 106.1 86.7 86.7 98.6 79.7 79.7 90.6
SHC 90.2 104.3 118.5 86 99.5 113 80.6 93.4 106.1 74.9 86.7 98.6 68.8 79.7 90.6
62 THC 109.7 109.7 112.4 103.6 103.6 109.5 95.9 95.9 105.9 87.6 87.6 101.2 79.8 79.8 94.4
SHC 80.8 96.6 112.4 78 93.8 109.5 74.5 90.2 105.9 70.3 85.7 101.2 65.2 79.8 94.4
67 THC 121.5 121.5 121.5 115.4 115.4 115.4 107.8 107.8 107.8 98.7 98.7 98.7 89.1 89.1 89.1
SHC 65.2 81 96.9 62.7 78.6 94.5 59.7 75.6 91.5 56.2 72 87.9 52.5 68.3 84.2
72 THC 133 133 133 127.1 127.1 127.1 120.5 120.5 120.5 112 112 112 102.1 102.1 102.1
SHC 48.7 64.5 80.4 46.5 62.4 78.3 44.1 60 75.9 41.2 57.1 73 37.8 53.7 69.6
76 THC --- 140.9 140.9 --- 135.1 135.1 --- 128.4 128.4 --- 121.3 121.3 --- 112.5 112.5
SHC --- 50.6 67.1 --- 48.7 65.2 --- 46.6 63.1 --- 44.3 60.7 --- 41.4 57.7
3500
Cfm
EA
(wb)
58 THC 109.9 109.9 124.9 104.9 104.9 119.3 98.7 98.7 112.2 91.6 91.6 104.2 84.2 84.2 95.8
SHC 94.9 109.9 124.9 90.6 104.9 119.3 85.2 98.7 112.2 79 91.6 104.2 72.6 84.2 95.8
62 THC 112.8 112.8 123.1 106.7 106.7 120 99.5 99.5 115.3 91.7 91.7 108.5 84.3 84.3 99.8
SHC 86.8 104.9 123.1 83.9 102 120 80 97.6 115.3 74.9 91.7 108.5 68.8 84.3 99.8
67 THC 124.2 124.2 124.2 118 118 118 110.3 110.3 110.3 101 101 101 91 91 92.5
SHC 68.4 86.7 104.9 66.1 84.3 102.6 63.2 81.5 99.8 59.6 78 96.3 55.9 74.2 92.5
72 THC 135.2 135.2 135.2 129.1 129.1 129.1 122.4 122.4 122.4 114.2 114.2 114.2 104.2 104.2 104.2
SHC 49.2 67.3 85.4 47.1 65.3 83.4 44.8 63 81.2 42 60.4 78.7 38.7 57.1 75.5
76 THC --- 142.4 142.4 --- 136.5 136.5 --- 129.6 129.6 --- 122.4 122.4 --- 114 114
SHC --- 51.7 70.9 --- 49.7 68.7 --- 47.5 66.3 --- 45.2 63.8 --- 42.6 61.2
4000
Cfm
EA
(wb)
58 THC 114.3 114.3 130 109.2 109.2 124.2 102.9 102.9 117 95.4 95.4 108.7 87.7 87.7 99.9
SHC 98.6 114.3 130 94.2 109.2 124.2 88.7 102.9 117 82.2 95.4 108.7 75.5 87.7 99.9
62 THC 115.3 115.3 132.4 109.6 109.6 128.3 102.9 102.9 121.9 95.5 95.5 113.2 87.8 87.8 104.1
SHC 91.9 112.2 132.4 88.7 108.5 128.3 84 102.9 121.9 77.9 95.5 113.2 71.5 87.8 104.1
67 THC 125.8 125.8 125.8 119.5 119.5 119.5 111.9 111.9 111.9 102.4 102.4 104.2 92.2 92.2 100.4
SHC 71.3 91.8 112.3 69 89.6 110.2 66.2 86.9 107.6 62.8 83.5 104.2 59.1 79.7 100.4
72 THC 136.3 136.3 136.3 130.2 130.2 130.2 123.4 123.4 123.4 115.4 115.4 115.4 105.3 105.3 105.3
SHC 49.5 69.7 89.8 47.4 67.7 87.9 45.1 65.5 85.9 42.5 63.1 83.7 39.3 60.1 80.9
76 THC --- 143.1 143.1 --- 137.1 137.1 --- 130.1 130.1 --- 122.6 122.6 --- 114.5 114.5
SHC --- 52.2 73.2 --- 50.2 71.1 --- 48 68.7 --- 45.7 66.4 --- 43.3 64.1
4500
Cfm
EA
(wb)
58 THC 117.5 117.5 133.8 112.4 112.4 127.9 106 106 120.7 98.4 98.4 112.1 90.3 90.3 103
SHC 101.3 117.5 133.8 96.8 112.4 127.9 91.2 106 120.7 84.6 98.4 112.1 77.7 90.3 103
62 THC 117.6 117.6 139.4 112.5 112.5 133.3 106.1 106.1 125.8 98.5 98.5 116.8 90.4 90.4 107.4
SHC 95.9 117.6 139.4 91.6 112.5 133.3 86.4 106.1 125.8 80.1 98.5 116.8 73.5 90.4 107.4
67 THC 126.6 126.6 126.6 120.2 120.2 120.2 112.8 112.8 114.8 103.2 103.2 111.6 93 93 107.6
SHC 73.7 96.4 119.2 71.5 94.3 117.2 68.9 91.8 114.8 65.6 88.6 111.6 61.8 84.7 107.6
72 THC 136.7 136.7 136.7 130.5 130.5 130.5 123.6 123.6 123.6 115.7 115.7 115.7 105.7 105.7 105.7
SHC 49.4 71.6 93.7 47.4 69.7 91.9 45.1 67.5 89.9 42.7 65.4 88.2 39.5 62.6 85.8
76 THC --- 143.1 143.1 --- 137 137 --- 129.9 129.9 --- 122.4 122.4 --- 114.3 114.3
SHC --- 52.4 75.1 --- 50.5 73.1 --- 48.2 70.8 --- 46 68.5 --- 43.7 66.5
5000
Cfm
EA
(wb)
58 THC 119.9 119.9 136.7 114.7 114.7 130.7 108.4 108.4 123.6 100.6 100.6 114.8 92.3 92.3 105.4
SHC 103.2 119.9 136.7 98.6 114.7 130.7 93.2 108.4 123.6 86.4 100.6 114.8 79.2 92.3 105.4
62 THC 120 120 142.4 114.7 114.7 136.2 108.5 108.5 128.8 100.7 100.7 119.7 92.4 92.4 109.9
SHC 97.6 120 142.4 93.3 114.7 136.2 88.1 108.5 128.8 81.7 100.7 119.7 74.9 92.4 109.9
67 THC 126.8 126.8 126.8 120.4 120.4 123.6 113.2 113.2 121.3 103.8 103.8 118.4 93.6 93.6 114
SHC 75.7 100.6 125.4 73.6 98.6 123.6 71.2 96.2 121.3 68 93.2 118.4 64.2 89.1 114
72 THC 136.5 136.5 136.5 130.2 130.2 130.2 123.2 123.2 123.2 115.5 115.5 115.5 105.6 105.6 105.6
SHC 49.1 73.1 97 47.1 71.3 95.4 44.9 69.2 93.5 42.5 67.3 92 39.5 64.9 90.2
76 THC --- 142.7 142.7 --- 136.5 136.5 --- 129.4 129.4 --- 121.6 121.6 --- 113.6 113.6
SHC --- 52.2 76.7 --- 50.4 74.7 --- 48.2 72.4 --- 45.9 70.1 --- 43.7 68.3
LEGEND:
--- --- D o n o t o p e r a t e
Cfm --- Cubic feet per minute (supply air)
EAT(db) --- Entering air temperature (dry bulb)
EAT(wb) --- Entering air temperature (wet bulb)
SHC --- Sensible heat capacity
TC --- Total capacity
48HC
36
TABLE 19 – STATIC PRESSURE ADDERS (FACTORY OPTIONS AND/OR ACCESSORIES)
Economizer
3 --- 5 T O N S
CFM (in. wg) 600 800 1000 1250 1500 1750 2000 2250 2500 2750 3000
Vertical
Economizer 0.01 0.02 0.04 0.05 0.07 0.09 0.12 0.15 0.18 0.22 0.26
Horizontal
Economizer 0.02 0.03 0.04 0.06 0.08 0.10 0.13 0.15 0.18 0.23 0.28
6 --- 1 0 T O N S
CFM (in. wg) 1800 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 5500 5750 6000
Vertical
Economizer 0.04 0.05 0.06 0.08 0.09 0.12 0.13 0.15 0.17 0.20 0.22 0.25 0.29 0.33 0.36 0.40 0.44 0.48
Horizontal
Economizer 0.07 0.07 0.08 0.10 0.13 0.15 0.18 0.21 0.25 0.28 0.30 0.34 0.39 0.43 0.47 0.51 0.56 0.60
General fan performance notes:
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses, as shown in Table 19. Selection software is available, through your salesperson, to help
you select the best motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Carrier recommended the lower horsepower option.
5. For information on the electrical properties of Carrier motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Carrier motors, see the application data section of this book.
7. The EPACT (Energy Policy Act of 1992) regulates energy requirements for specific types of indoor fan motors. Motors
regulated by EPACT include any general purpose, T--frame (three--digit, 143 and larger), single--speed, foot mounted,
polyphase, squirrel cage induction motors of NEMA (National Electrical Manufacturers Association) design A and B,
manufactured for use in the United States. Ranging from 1 to 200 Hp, these continuous--duty motors operate on 230
and 460 volt, 60 Hz power. If a motor does not fit into these specifications, the motor does not have to be replaced by
an EPACT compliant energy--efficient motor. Variable--speed motors are exempt from EPACT compliance require-
ments. Therefore, the indoor fan motors for Carrier 48HC04--12 units are exempt from these requirements.
48HC
37
FAN PERFORMANCE (BELT DRIVE)
TABLE 20 – 48HC**04 3 PHASE 3 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
900 582 0.14 715 0.24 825 0.35 921 0.48 1007 0.63
975 606 0.16 735 0.26 843 0.38 938 0.51 1023 0.66
1050 630 0.18 756 0.29 862 0.41 955 0.55 1040 0.70
1125 655 0.21 778 0.32 882 0.45 974 0.58 1057 0.74
1200 681 0.24 800 0.35 902 0.48 992 0.63 1074 0.78
1275 708 0.27 823 0.39 923 0.53 1012 0.67 1093 0.83
1350 735 0.31 847 0.43 945 0.57 1032 0.72 1112 0.88
1425 762 0.35 871 0.48 967 0.62 1053 0.77 1131 0.94
1500 790 0.40 896 0.53 990 0.67 1074 0.83 1151 1.00
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
900 1086 0.79 1159 0.96 1228 1.14 1293 1.33 1354 1.53
975 1101 0.82 1174 0.99 1242 1.18 1306 1.37 1367 1.57
1050 1117 0.86 1189 1.03 1256 1.22 1320 1.41 1381 1.62
1125 1133 0.90 1204 1.08 1271 1.26 1335 1.46 1395 1.67
1200 1150 0.95 1221 1.13 1287 1.31 1350 1.51 1410 1.72
1275 1168 1.00 1237 1.18 1303 1.37 1365 1.57 1425 1.78
1350 1186 1.05 1255 1.24 1320 1.43 1382 1.63 1441 1.84
1425 1204 1.11 1272 1.30 1337 1.49 1398 1.70 1457 1.91
1500 1223 1.18 1291 1.36 1355 1.56 1415 1.77 1473 1.99
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 770--- 1175 RPM, 1.2 BHP max
High static 1035---1466 RPM, 2.4 BHP max
TABLE 21 – 48HC**04 3 PHASE 3 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
900 592 0.14 721 0.25 826 0.38 916 0.53 997 0.69
975 616 0.17 744 0.28 847 0.41 936 0.56 1016 0.72
1050 641 0.19 766 0.30 868 0.44 957 0.59 1036 0.76
1125 667 0.22 790 0.33 890 0.47 978 0.63 1056 0.80
1200 693 0.25 813 0.37 913 0.51 999 0.67 1077 0.84
1275 720 0.29 837 0.41 935 0.55 1021 0.71 1098 0.88
1350 747 0.33 862 0.45 958 0.60 1043 0.76 1119 0.94
1425 775 0.37 887 0.50 982 0.65 1066 0.81 1141 0.99
1500 802 0.42 912 0.55 1006 0.70 1088 0.87 1163 1.05
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
900 1070 0.88 1137 1.07 1201 1.29 1260 1.51 1317 1.75
975 1089 0.91 1156 1.11 1219 1.32 1279 1.54 1335 1.78
1050 1108 0.94 1175 1.14 1238 1.36 1297 1.58 1353 1.82
1125 1128 0.98 1195 1.18 1257 1.40 1316 1.62 1372 1.86
1200 1148 1.03 1214 1.23 1276 1.44 1335 1.67 1391 1.91
1275 1169 1.07 1235 1.28 1296 1.50 1354 1.72 1410 1.97
1350 1190 1.13 1255 1.33 1316 1.55 1374 1.78 1429 2.03
1425 1211 1.19 1276 1.39 1337 1.61 1394 1.85 1449 2.09
1500 1232 1.25 1297 1.46 1357 1.68 1415 1.91 1469 2.16
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 770--- 1175 RPM, 1.2 BHP max
High static 1035---1466 RPM, 2.4 BHP max
48HC
38
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 22 – 48HC**05 3 PHASE 4 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1200 681 0.24 800 0.35 902 0.48 992 0.63 1074 0.78
1300 717 0.29 831 0.41 930 0.54 1019 0.69 1099 0.85
1400 753 0.34 863 0.46 959 0.60 1046 0.75 1125 0.92
1500 790 0.40 896 0.53 990 0.67 1074 0.83 1151 1.00
1600 828 0.46 930 0.60 1021 0.75 1103 0.91 1179 1.09
1700 866 0.54 964 0.68 1053 0.84 1133 1.01 1207 1.18
1800 905 0.62 1000 0.77 1085 0.94 1164 1.11 1236 1.29
1900 944 0.71 1036 0.87 1119 1.04 1195 1.22 1266 1.41
2000 984 0.82 1072 0.98 1153 1.15 1227 1.34 1297 1.53
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1200 1150 0.95 1221 1.13 1287 1.31 1350 1.51 1410 1.72
1300 1173 1.02 1243 1.20 1309 1.39 1371 1.59 1430 1.80
1400 1198 1.09 1266 1.28 1331 1.47 1393 1.68 1451 1.89
1500 1223 1.18 1291 1.36 1355 1.56 1415 1.77 1473 1.99
1600 1249 1.27 1316 1.46 1379 1.66 1439 1.87 1496 2.09
1700 1277 1.37 1342 1.57 1404 1.77 1463 1.99 1520 2.21
1800 1305 1.48 1369 1.68 1430 1.89 1489 2.11 1545 2.34
1900 1333 1.60 1397 1.81 1457 2.02 1514 2.25 1570 2.48
2000 1363 1.73 1425 1.94 1484 2.16 1541 2.39 1596 2.63
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 920--- 1303 RPM, 1.7 BHP max
High static 1208---1639 RPM, 2.9 BHP max
TABLE 23 – 48HC**05 3 PHASE 4 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1200 693 0.25 813 0.37 913 0.51 999 0.67 1077 0.84
1300 729 0.30 846 0.42 943 0.57 1028 0.73 1105 0.90
1400 765 0.35 879 0.48 974 0.63 1058 0.79 1134 0.97
1500 802 0.42 912 0.55 1006 0.70 1088 0.87 1163 1.05
1600 840 0.49 947 0.63 1038 0.78 1119 0.95 1193 1.14
1700 878 0.57 982 0.71 1071 0.87 1151 1.05 1224 1.24
1800 917 0.65 1017 0.81 1105 0.97 1183 1.15 1255 1.35
1900 956 0.75 1053 0.91 1139 1.08 1216 1.27 1287 1.47
2000 995 0.86 1090 1.02 1173 1.20 1249 1.39 1319 1.59
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1200 1148 1.03 1214 1.23 1276 1.44 1335 1.67 1391 1.91
1300 1176 1.09 1241 1.30 1303 1.51 1361 1.74 1416 1.98
1400 1204 1.17 1269 1.37 1330 1.59 1388 1.82 1442 2.07
1500 1232 1.25 1297 1.46 1357 1.68 1415 1.91 1469 2.16
1600 1262 1.34 1325 1.55 1385 1.78 1442 2.01 1496 2.26
1700 1291 1.44 1354 1.66 1414 1.89 1470 2.12 1524 2.37
1800 1322 1.55 1384 1.77 1443 2.00 1499 2.25 1552 2.50
1900 1352 1.68 1414 1.90 1472 2.13 1528 2.38 1580 2.63
2000 1384 1.81 1445 2.04 1502 2.27 1557 2.52 1609 2.78
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 920--- 1303 RPM, 1.7 BHP max
High static 1208---1639 RPM, 2.9 BHP max
48HC
39
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 24 – 48HC**06 3 PHASE 5 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1500 798 0.41 906 0.55 1002 0.71 1088 0.87 1167 1.05
1625 845 0.50 949 0.65 1041 0.81 1125 0.98 1202 1.17
1750 893 0.60 993 0.76 1081 0.93 1163 1.11 1238 1.30
1875 942 0.71 1037 0.88 1123 1.06 1202 1.25 1275 1.44
2000 992 0.84 1083 1.02 1166 1.21 1242 1.40 1313 1.61
2125 1043 0.98 1129 1.17 1209 1.37 1283 1.57 1353 1.79
2250 1093 1.14 1177 1.34 1254 1.55 1325 1.76 1393 1.98
2375 1145 1.32 1225 1.53 1299 1.74 1369 1.97 1434 2.20
2500 1196 1.51 1273 1.73 1345 1.96 1413 2.19 1477 2.43
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1500 1241 1.23 1310 1.42 1375 1.63 1438 1.84 1497 2.06
1625 1274 1.36 1342 1.56 1406 1.77 1467 1.98 1526 2.21
1750 1308 1.50 1375 1.70 1438 1.92 1498 2.14 1555 2.37
1875 1344 1.65 1409 1.86 1471 2.09 1530 2.32 1586 2.55
2000 1380 1.82 1444 2.04 1505 2.27 1563 2.51 1619 2.75
2125 1418 2.01 1481 2.24 1540 2.47 1597 2.72 1652 2.97
2250 1457 2.21 1518 2.45 1576 2.69 1632 2.94 1686 3.20
2375 1497 2.43 1556 2.68 1614 2.93 1669 3.19 --- ---
2500 1538 2.68 1596 2.93 1652 3.19 --- --- --- ---
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 1035--- 1466 RPM, 2.4 BHP
High static 1303 --- 1687 RPM, 2.9 BHP max
TABLE 25 – 48HC**06 3 PHASE 5 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1500 847 0.41 966 0.55 1067 0.68 1158 0.81 1240 0.93
1625 896 0.50 1010 0.65 1109 0.79 1198 0.93 1278 1.07
1750 947 0.59 1056 0.76 1152 0.92 1238 1.07 1318 1.22
1875 998 0.70 1103 0.88 1196 1.05 1280 1.22 1358 1.38
2000 1049 0.82 1151 1.02 1241 1.20 1323 1.38 1399 1.56
2125 1102 0.96 1199 1.17 1287 1.37 1367 1.56 1441 1.75
2250 1154 1.11 1248 1.33 1333 1.55 1411 1.75 1484 1.96
2375 1208 1.28 1298 1.52 1381 1.74 1457 1.96 1528 2.18
2500 1261 1.47 1349 1.72 1429 1.96 1503 2.19 1572 2.42
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1500 1316 1.05 1387 1.17 1454 1.28 1517 1.39 1578 1.50
1625 1353 1.20 1423 1.33 1489 1.46 1552 1.58 1611 1.70
1750 1391 1.36 1460 1.51 1525 1.65 1587 1.78 1646 1.91
1875 1430 1.54 1498 1.70 1562 1.85 1623 2.00 1681 2.14
2000 1470 1.73 1537 1.90 1600 2.06 1660 2.23 1718 2.38
2125 1511 1.93 1576 2.12 1639 2.29 1698 2.47 1755 2.64
2250 1552 2.15 1617 2.35 1678 2.54 1737 2.73 1793 2.92
2375 1595 2.39 1658 2.60 1718 2.80 1776 3.01 --- ---
2500 1638 2.64 1700 2.87 1760 3.08 --- --- --- ---
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Medium static 1035--- 1466 RPM, 2.4 BHP
High static 1303 --- 1687 RPM, 2.9 BHP max
48HC
40
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 26 – 48HC**07 3 PHASE 6 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1800 441 0.33 533 0.51 611 0.72 681 0.96 745 1.23
1950 462 0.38 550 0.58 626 0.80 694 1.04 757 1.31
2100 483 0.45 567 0.65 641 0.88 708 1.13 769 1.40
2250 505 0.52 586 0.73 657 0.97 722 1.22 782 1.50
2400 528 0.60 605 0.82 674 1.07 738 1.33 796 1.62
2550 550 0.69 625 0.92 692 1.17 754 1.45 811 1.74
2700 574 0.80 645 1.03 710 1.29 770 1.57 826 1.88
2850 597 0.91 666 1.16 729 1.43 788 1.71 843 2.02
3000 621 1.03 688 1.29 749 1.57 806 1.87 859 2.18
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1800 804 1.51 860 1.82 912 2.15 961 2.49 1008 2.85
1950 815 1.60 869 1.91 920 2.24 969 2.59 1016 2.96
2100 826 1.70 880 2.01 930 2.35 978 2.70 1024 3.07
2250 838 1.81 891 2.12 941 2.46 988 2.82 1033 3.19
2400 851 1.92 903 2.25 952 2.59 999 2.95 1043 3.33
2550 865 2.05 916 2.38 964 2.73 1010 3.10 1054 3.48
2700 879 2.19 929 2.53 976 2.88 1022 3.25 1066 3.64
2850 894 2.35 943 2.69 990 3.05 1035 3.43 1078 3.82
3000 910 2.51 958 2.86 1004 3.23 1048 3.61 1090 4.01
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 489 --- 747 RPM, 1.7 BHP max
Medium static 733 --- 949 RPM, 2.9 BHP max
High static 909 --- 1102 RPM, 4.7 BHP max
TABLE 27 – 48HC**07 3 PHASE 6 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1800 449 0.34 539 0.53 615 0.75 681 0.99 742 1.26
1950 470 0.40 557 0.60 631 0.83 696 1.08 756 1.35
2100 491 0.47 576 0.68 648 0.91 712 1.17 771 1.45
2250 513 0.54 595 0.76 665 1.01 728 1.27 786 1.56
2400 536 0.63 615 0.86 684 1.11 745 1.39 802 1.68
2550 558 0.72 635 0.97 702 1.23 763 1.51 818 1.81
2700 582 0.83 656 1.08 721 1.35 781 1.65 835 1.95
2850 605 0.94 677 1.21 741 1.49 799 1.79 853 2.11
3000 629 1.07 699 1.35 761 1.64 818 1.95 871 2.28
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1800 797 1.54 848 1.84 896 2.16 942 2.49 985 2.84
1950 810 1.64 861 1.94 909 2.26 954 2.60 997 2.96
2100 824 1.74 875 2.06 922 2.38 967 2.73 1009 3.09
2250 839 1.86 889 2.18 935 2.52 980 2.87 1022 3.23
2400 854 1.99 903 2.32 950 2.66 993 3.02 1035 3.39
2550 870 2.13 918 2.46 964 2.81 1008 3.18 1049 3.55
2700 886 2.28 934 2.62 979 2.98 1022 3.35 1063 3.74
2850 903 2.44 950 2.79 995 3.16 1037 3.54 1078 3.93
3000 920 2.62 966 2.98 1010 3.35 1052 3.74 1093 4.14
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 489 --- 747 RPM, 1.7 BHP max
Medium static 733 --- 949 RPM, 2.9 BHP max
High static 909 --- 1102 RPM, 4.7 BHP max
48HC
41
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 28 – 48HC**08 3 PHASE 7.5 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 482 0.36 577 0.51 659 0.66 732 0.82 799 0.98
2438 505 0.43 597 0.59 676 0.75 748 0.92 813 1.09
2625 529 0.51 617 0.68 694 0.85 764 1.03 827 1.22
2813 554 0.60 638 0.78 713 0.97 781 1.16 843 1.35
3000 579 0.70 660 0.89 732 1.09 799 1.29 860 1.50
3188 604 0.81 683 1.02 753 1.23 817 1.44 877 1.65
3375 630 0.94 706 1.15 774 1.37 836 1.60 895 1.82
3563 657 1.08 729 1.31 795 1.54 856 1.77 913 2.01
3750 683 1.23 753 1.47 817 1.71 877 1.96 933 2.21
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 860 1.14 917 1.31 971 1.48 1022 1.66 1071 1.84
2438 873 1.27 929 1.45 983 1.63 1033 1.81 1081 2.00
2625 887 1.40 942 1.59 995 1.78 1045 1.98 1092 2.18
2813 901 1.55 956 1.75 1008 1.95 1057 2.15 1104 2.36
3000 917 1.70 970 1.91 1021 2.13 1070 2.34 1117 2.56
3188 933 1.87 986 2.09 1036 2.32 1084 2.54 1130 2.77
3375 950 2.05 1002 2.29 1051 2.52 1098 2.76 1144 3.00
3563 967 2.25 1018 2.49 1067 2.74 1113 2.99 1158 3.24
3750 985 2.46 1035 2.71 1083 2.97 1129 3.23 1173 3.49
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 518 --- 733 RPM, 1.7 BHP max
Medium static 690 --- 936 RPM, 2.4 BHP max
High static 838 --- 1084 RPM, 3.7 BHP max
TABLE 29 – 48HC**08 3 PHASE 7.5 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 505 0.39 595 0.54 676 0.69 750 0.86 819 1.03
2438 532 0.47 617 0.63 694 0.79 766 0.97 833 1.15
2625 559 0.56 640 0.73 714 0.90 783 1.08 848 1.28
2813 588 0.67 664 0.84 735 1.03 801 1.22 864 1.42
3000 616 0.79 689 0.97 757 1.16 821 1.36 882 1.57
3188 646 0.92 715 1.11 780 1.31 842 1.52 901 1.74
3375 675 1.06 742 1.27 804 1.48 864 1.70 920 1.93
3563 705 1.23 769 1.44 829 1.66 886 1.89 941 2.13
3750 736 1.41 797 1.63 855 1.86 910 2.10 963 2.35
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 884 1.21 945 1.40 1003 1.60 1059 1.80 1112 2.01
2438 896 1.34 955 1.54 1012 1.74 1066 1.95 1118 2.17
2625 909 1.47 967 1.68 1022 1.89 1075 2.11 1126 2.34
2813 923 1.62 980 1.84 1034 2.06 1086 2.29 1136 2.52
3000 939 1.79 994 2.01 1047 2.24 1098 2.47 1147 2.71
3188 956 1.97 1010 2.20 1061 2.43 1111 2.68 1159 2.93
3375 975 2.16 1027 2.40 1077 2.65 1125 2.90 1172 3.15
3563 994 2.37 1044 2.62 1093 2.87 1141 3.13 1186 3.40
3750 1014 2.60 1063 2.86 1111 3.12 1157 3.39 1202 3.66
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 518 --- 733 RPM, 1.7 BHP max
Medium static 690 --- 936 RPM, 2.4 BHP max
High static 838 --- 1084 RPM, 3.7 BHP max
48HC
42
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 30 – 48HC**09 3 PHASE 8.5 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 520 0.47 609 0.64 687 0.81 757 0.99 821 1.16
2438 547 0.57 633 0.75 708 0.94 776 1.12 839 1.31
2625 575 0.68 657 0.88 730 1.07 796 1.27 857 1.48
2813 604 0.81 683 1.02 753 1.23 817 1.44 877 1.65
3000 634 0.95 709 1.17 777 1.40 839 1.62 897 1.85
3188 664 1.11 736 1.35 801 1.58 862 1.82 919 2.06
3375 694 1.29 763 1.54 826 1.79 885 2.04 941 2.29
3563 725 1.49 791 1.75 852 2.01 909 2.28 963 2.54
3750 756 1.71 819 1.98 879 2.26 934 2.53 987 2.81
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 881 1.35 937 1.53 990 1.72 1040 1.91 1088 2.11
2438 897 1.51 952 1.70 1004 1.90 1054 2.11 1101 2.31
2625 915 1.68 968 1.89 1020 2.10 1068 2.32 1115 2.53
2813 933 1.87 986 2.09 1036 2.32 1084 2.54 1130 2.77
3000 952 2.08 1004 2.31 1053 2.55 1100 2.79 1145 3.03
3188 972 2.30 1023 2.55 1071 2.80 1118 3.05 1162 3.30
3375 993 2.55 1043 2.81 1090 3.07 1136 3.33 1179 3.59
3563 1014 2.81 1063 3.08 1110 3.36 1154 3.63 1198 3.91
3750 1037 3.09 1084 3.38 1130 3.66 1174 3.95 1216 4.24
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 518 --- 733 RPM, 1.7 BHP max
Medium static 690 --- 936 RPM, 2.4 BHP max
High static 838 --- 1084 RPM, 3.7 BHP max
TABLE 31 – 48HC**09 3 PHASE 8.5 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 505 0.39 595 0.54 676 0.69 750 0.86 819 1.03
2438 532 0.47 617 0.63 694 0.79 766 0.97 833 1.15
2625 559 0.56 640 0.73 714 0.90 783 1.08 848 1.28
2813 588 0.67 664 0.84 735 1.03 801 1.22 864 1.42
3000 616 0.79 689 0.97 757 1.16 821 1.36 882 1.57
3188 646 0.92 715 1.11 780 1.31 842 1.52 901 1.74
3375 675 1.06 742 1.27 804 1.48 864 1.70 920 1.93
3563 705 1.23 769 1.44 829 1.66 886 1.89 941 2.13
3750 736 1.41 797 1.63 855 1.86 910 2.10 963 2.35
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2250 884 1.21 945 1.40 1003 1.60 1059 1.80 1112 2.01
2438 896 1.34 955 1.54 1012 1.74 1066 1.95 1118 2.17
2625 909 1.47 967 1.68 1022 1.89 1075 2.11 1126 2.34
2813 923 1.62 980 1.84 1034 2.06 1086 2.29 1136 2.52
3000 939 1.79 994 2.01 1047 2.24 1098 2.47 1147 2.71
3188 956 1.97 1010 2.20 1061 2.43 1111 2.68 1159 2.93
3375 975 2.16 1027 2.40 1077 2.65 1125 2.90 1172 3.15
3563 994 2.37 1044 2.62 1093 2.87 1141 3.13 1186 3.40
3750 1014 2.60 1063 2.86 1111 3.12 1157 3.39 1202 3.66
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 518 --- 733 RPM, 1.7 BHP max
Medium static 690 --- 936 RPM, 2.4 BHP max
High static 838 --- 1084 RPM, 3.7 BHP max
48HC
43
FAN PERFORMANCE (BELT DRIVE) (cont.)
TABLE 32 – 48HC**12 3 PHASE 10 TON HORIZONTAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3000 579 0.70 660 0.89 732 1.09 799 1.29 860 1.50
3250 613 0.85 690 1.06 760 1.27 823 1.49 883 1.71
3500 648 1.03 721 1.25 788 1.48 850 1.71 907 1.95
3750 683 1.23 753 1.47 817 1.71 877 1.96 933 2.21
4000 719 1.45 786 1.71 848 1.97 905 2.23 959 2.50
4250 756 1.71 819 1.98 879 2.26 934 2.53 987 2.81
4500 792 1.99 853 2.28 910 2.57 964 2.87 1015 3.16
4750 830 2.31 888 2.62 943 2.92 995 3.23 1044 3.54
5000 867 2.66 923 2.98 976 3.30 1026 3.63 1074 3.95
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3000 917 1.70 970 1.91 1021 2.13 1070 2.34 1117 2.56
3250 938 1.93 991 2.16 1041 2.38 1089 2.61 1134 2.85
3500 961 2.18 1013 2.42 1062 2.66 1108 2.91 1153 3.15
3750 985 2.46 1035 2.71 1083 2.97 1129 3.23 1173 3.49
4000 1011 2.76 1059 3.03 1106 3.30 1151 3.58 1194 3.85
4250 1037 3.09 1084 3.38 1130 3.66 1174 3.95 1216 4.24
4500 1064 3.46 1110 3.76 1155 4.06 1198 4.36 1239 4.66
4750 1091 3.85 1137 4.16 1180 4.48 --- --- --- ---
5000 1120 4.28 1164 4.61 --- --- --- --- --- ---
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 591 --- 838 RPM, 2.4 BHP max
Medium static 838 --- 1084 RPM, 3.7 BHP max
High static 1022 --- 1240 RPM, 5.0 BHP max
TABLE 33 – 48HC**12 3 PHASE 10 TON VERTICAL SUPPLY
CFM
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3000 616 0.79 689 0.97 757 1.16 821 1.36 882 1.57
3250 655 0.96 724 1.16 788 1.37 849 1.58 907 1.80
3500 695 1.17 760 1.38 821 1.60 879 1.83 934 2.06
3750 736 1.41 797 1.63 855 1.86 910 2.10 963 2.35
4000 777 1.68 834 1.91 889 2.16 942 2.41 993 2.67
4250 818 1.98 873 2.23 925 2.49 976 2.75 1025 3.02
4500 860 2.32 912 2.58 962 2.85 1010 3.13 1057 3.41
4750 902 2.69 951 2.97 999 3.26 1046 3.55 1091 3.84
5000 944 3.11 991 3.40 1037 3.70 1082 4.00 1125 4.31
CFM
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3000 939 1.79 994 2.01 1047 2.24 1098 2.47 1147 2.71
3250 962 2.03 1015 2.26 1066 2.50 1115 2.75 1163 3.00
3500 987 2.30 1038 2.54 1088 2.80 1135 3.05 1181 3.32
3750 1014 2.60 1063 2.86 1111 3.12 1157 3.39 1202 3.66
4000 1042 2.93 1090 3.20 1136 3.48 1180 3.76 1224 4.04
4250 1072 3.30 1118 3.58 1162 3.87 1205 4.16 1247 4.46
4500 1103 3.70 1147 4.00 1190 4.29 1232 4.60 --- ---
4750 1135 4.14 1177 4.45 --- --- --- --- --- ---
5000 1167 4.63 --- --- --- --- --- --- --- ---
NOTE: For more information, see General Fan Performance Notes.
Boldface indicates field ---supplied drive is required.
Standard static 591 --- 838 RPM, 2.4 BHP max
Medium static 838 --- 1084 RPM, 3.7 BHP max
High static 1022 --- 1240 RPM, 5.0 BHP max
48HC
44
FAN PERFORMANCE
X13 MULTI SPEED/TORQUE MOTOR (cont.)
TABLE 34 – 48HC*A04 Horizontal Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
900 0.45 0.23
975 0.33 0.22
1050 0.22 0.20
1125 0.12 0.19
1200 0.05 0.17
1275 --- ---
1350 --- ---
1425 --- ---
1500 --- ---
2
900 0.66 0.30
975 0.52 0.28
1050 0.39 0.27
1125 0.27 0.26
1200 0.16 0.24
1275 0.05 0.23
1350 --- ---
1425 --- ---
1500 --- ---
3
900 1.01 0.43
975 0.88 0.41
1050 0.73 0.39
1125 0.59 0.38
1200 0.46 0.36
1275 0.33 0.36
1350 0.21 0.33
1425 0.09 0.31
1500 --- ---
4
900 1.13 0.46
975 1.03 0.46
1050 0.92 0.46
1125 0.81 0.46
1200 0.69 0.46
1275 0.57 0.45
1350 0.44 0.44
1425 0.31 0.42
1500 0.18 0.40
5
900 1.20 0.49
975 1.14 0.51
1050 0.92 0.53
1125 0.81 0.55
1200 0.95 0.57
1275 0.90 0.60
1350 0.84 0.62
1425 0.78 0.65
1500 0.72 0.68
TABLE 35 – 48HC*A04 Vertical Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
900 0.30 0.19
975 0.17 0.17
1050 0.06 0.16
1125 --- ---
1200 --- ---
1275 --- ---
1350 --- ---
1425 --- ---
1500 --- ---
2
900 0.48 0.25
975 0.34 0.23
1050 0.20 0.22
1125 0.07 0.20
1200 --- ---
1275 --- ---
1350 --- ---
1425 --- ---
1500 --- ---
3
900 0.84 0.38
975 0.69 0.36
1050 0.53 0.33
1125 0.38 0.32
1200 0.24 0.31
1275 0.10 0.31
1350 --- ---
1425 --- ---
1500 --- ---
4
900 0.99 0.43
975 0.88 0.43
1050 0.75 0.43
1125 0.61 0.43
1200 0.47 0.42
1275 0.33 0.40
1350 0.19 0.38
1425 --- ---
1500 --- ---
5
900 1.10 0.47
975 1.02 0.49
1050 0.75 0.51
1125 0.61 0.54
1200 0.81 0.56
1275 0.74 0.58
1350 0.67 0.61
1425 0.60 0.63
1500 0.52 0.66
48HC
45
TABLE 36 – 48HC*A05 Horizontal Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
1200 0.49 0.35
1300 0.34 0.33
1400 0.20 0.31
1500 0.06 0.29
1600 --- ---
1700 --- ---
1800 --- ---
1900 --- ---
2000 --- ---
2
1200 0.60 0.40
1300 0.45 0.38
1400 0.30 0.36
1500 0.16 0.34
1600 0.01 0.32
1700 --- ---
1800 --- ---
1900 --- ---
2000 --- ---
3
1200 0.94 0.59
1300 0.83 0.61
1400 0.71 0.63
1500 0.59 0.61
1600 0.46 0.59
1700 0.33 0.56
1800 0.19 0.53
1900 0.07 0.49
2000 --- ---
4
1200 0.98 0.59
1300 0.89 0.62
1400 0.81 0.65
1500 0.72 0.66
1600 0.62 0.67
1700 0.52 0.68
1800 0.40 0.68
1900 0.27 0.66
2000 0.12 0.61
5
1200 1.02 0.60
1300 0.95 0.63
1400 0.81 0.67
1500 0.72 0.70
1600 0.74 0.74
1700 0.67 0.78
1800 0.59 0.82
1900 0.51 0.86
2000 0.42 0.89
TABLE 37 – 48HC*A05 Vertical Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
1200 0.38 0.30
1300 0.24 0.28
1400 0.12 0.27
1500 0.01 0.26
1600 --- ---
1700 --- ---
1800 --- ---
1900 --- ---
2000 --- ---
2
1200 0.49 0.34
1300 0.34 0.32
1400 0.20 0.31
1500 0.05 0.29
1600 --- ---
1700 --- ---
1800 --- ---
1900 --- ---
2000 --- ---
3
1200 0.87 0.56
1300 0.74 0.57
1400 0.60 0.59
1500 0.44 0.56
1600 0.29 0.50
1700 0.14 0.47
1800 0.02 0.46
1900 --- ---
2000 --- ---
4
1200 0.93 0.57
1300 0.83 0.60
1400 0.72 0.63
1500 0.60 0.63
1600 0.48 0.62
1700 0.35 0.62
1800 0.21 0.61
1900 0.06 0.58
2000 --- ---
5
1200 0.97 0.58
1300 0.89 0.61
1400 0.72 0.65
1500 0.60 0.68
1600 0.64 0.72
1700 0.55 0.75
1800 0.46 0.79
1900 0.35 0.82
2000 0.25 0.86
48HC
46
TABLE 38 – 48HC*A06 Horizontal Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
1500 0.40 0.50
1625 0.20 0.48
1750 0.04 0.45
1875 --- ---
2000 --- ---
2125 --- ---
2250 --- ---
2375 --- ---
2500 --- ---
2
1500 0.62 0.62
1625 0.39 0.60
1750 0.19 0.57
1875 0.03 0.53
2000 --- ---
2125 --- ---
2250 --- ---
2375 --- ---
2500 --- ---
3
1500 1.04 0.87
1625 0.87 0.88
1750 0.68 0.88
1875 0.48 0.84
2000 0.28 0.84
2125 0.07 0.84
2250 --- ---
2375 --- ---
2500 --- ---
4
1500 1.10 0.90
1625 0.96 0.94
1750 0.81 0.98
1875 0.65 0.95
2000 0.47 1.00
2125 0.27 0.94
2250 0.05 0.96
2375 --- ---
2500 --- ---
5
1500 1.12 0.92
1625 1.00 0.96
1750 0.81 1.00
1875 0.65 1.04
2000 0.56 1.08
2125 0.39 0.95
2250 0.19 1.09
2375 --- ---
2500 --- ---
TABLE 39 – 48HC*A06 Vertical Unit--Direct Drive
Speed
(Torque)
tap
CFM ESP BHP
1
1500 0.27 0.45
1625 0.08 0.43
1750 --- ---
1875 --- ---
2000 --- ---
2125 --- ---
2250 --- ---
2375 --- ---
2500 --- ---
2
1500 0.48 0.57
1625 0.26 0.55
1750 0.08 0.53
1875 --- ---
2000 --- ---
2125 --- ---
2250 --- ---
2375 --- ---
2500 --- ---
3
1500 0.91 0.82
1625 0.72 0.82
1750 0.52 0.81
1875 0.31 0.78
2000 0.11 0.77
2125 --- ---
2250 --- ---
2375 --- ---
2500 --- ---
4
1500 0.98 0.85
1625 0.82 0.89
1750 0.66 0.92
1875 0.50 0.90
2000 0.32 0.92
2125 0.13 0.86
2250 --- ---
2375 --- ---
2500 --- ---
5
1500 1.00 ---
1625 0.86 0.91
1750 0.66 0.95
1875 0.50 0.98
2000 0.41 1.01
2125 0.25 0.88
2250 0.06 1.01
2375 --- ---
2500 --- ---
48HC
47
TABLE 40 – PULLEY ADJUSTMENT
UNIT Motor/Drive Combo
Motor Pulley turns open
00.5 11.5 22.5 33.5 44.5 5
04 3
Phase
Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770
High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035
05 3
Phase
Medium Static 1303 1265 1226 1188 1150 1112 1073 1035 997 958 920
High Static 1639 1596 1553 1510 1467 1424 1380 1337 1294 1251 1208
06 3
Phase
Medium Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035
High Static 1687 1649 1610 1572 1533 1495 1457 1418 1380 1341 1303
07 3
Phase
Standard Static 747 721 695 670 644 618 592 566 541 515 489
Medium Static 949 927 906 884 863 841 819 798 776 755 733
High Static 1102 1083 1063 1044 1025 1006 986 967 948 928 909
08 3
Phase
Standard Static 733 712 690 669 647 626 604 583 561 540 518
Medium Static 936 911 887 862 838 813 788 764 739 715 690
High Static 1084 1059 1035 1010 986 961 936 912 887 863 838
09 3
Phase
Standard Static 733 712 690 669 647 626 604 583 561 540 518
Medium Static 936 911 887 862 838 813 788 764 739 715 690
High Static 1084 1059 1035 1010 986 961 936 912 887 863 838
12 3
Phase
Standard Static 838 813 789 764 739 715 690 665 640 616 591
Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838
High Static 1240 1218 1196 1175 1153 1131 1109 1087 1066 1044 1022
--- F a c t o r y s e t t i n g s
48HC
48
ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RETURN DUCT STATIC PRESS URE (in. wg)
RELIEF FLOW (CFM)
3 -5 Ton
-
Horizontal Economizers
610 Ton
C10472
Fig. 13 -- Barometric Relief Flow Capacity
0
1000
2000
3000
4000
5000
6000
0 0.1 0.2 0.3 0.4
RETURN DUCT STATIC PRESS URE DROP (in. wg)
RETURN AIR FLOW (CFM)
3 -
-
Horizontal Economizers
5
6
Ton
10 Ton
C10474
Fig. 14 -- Return Air Pressure Drop
0
500
1000
1500
2000
2500
0 0.1 0.2 0.3 0.4 0.5
STATIC PRESSURE (in. wg)
FLOW (cfm)
3-10 Ton
C10239
Fig. 15 -- Horizontal Power Exhaust Performance
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RETURN DUCT STATIC PRESS URE (in. wg)
RELIEF FLOW (CFM)
3 - Ton
-
Vertical Economizers
5
6
10 Ton
C10475
Fig. 16 -- Barometric Relief Flow Capacity
0
1000
2000
3000
4000
5000
6000
0 0.1 0.2 0.3 0.4
RETURN DUCT STATIC PRESS URE DROP (in. wg)
RETURN AIR FLOW (CFM)
3 - TON
-
Vertical Economizers
5
610
Ton
C10477
Fig. 17 -- Return Air Pressure Drop
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
STATIC PRESSURE (in. wg)
FLOW (cfm)
3 - 5 Ton
6 - 10 Ton
C10240
Fig. 18 -- Vertical Power Exhaust Performance
48HC
49
ELECTRICAL INFORMATION
TABLE 41 – 48HC**04 1--STAGE COOLING 3 TONS
V --- P h --- H z
VOLTAGE
RANGE
COMP (ea) OFM (ea) IFM
RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP Draw
EFF at Full
Load FLA
MIN MAX
2 0 8 --- 1 --- 6 0 187 253 16.6 79 190 1.0 D D --- S T D 980 7.8 84% 7.4
2 3 0 --- 1 --- 6 0 187 253 16.6 79 190 1.0 D D --- S T D 980 7.8 84% 7.4
2 0 8 --- 3 --- 6 0 187 253 10.4 73 190 1.0
D D --- S T D 980 7.8 84% 7.4
MED 1000 5.1 70% 4.9
HIGH 2120 5.5 80% 5.2
2 3 0 --- 3 --- 6 0 187 253 10.4 73 190 1.0
D D --- S T D 980 7.8 84% 7.4
MED 1000 5.1 70% 4.9
HIGH 2120 5.5 80% 5.2
4 6 0 --- 3 --- 6 0 414 506 5.8 38 190 0.5
D D --- S T D 980 4.2 84% 4.0
MED 1000 2.2 70% 2.1
HIGH 2120 2.7 80% 2.6
5 7 5 --- 3 --- 6 0 518 633 3.8 37 190 0.5
D D --- S T D 980 4.2 84% 4.0
MED 1000 2.0 71% 1.9
HIGH 2120 2.1 80% 2.0
TABLE 42 – 48HC**05 1--STAGE COOLING 4 TONS
V --- P h --- H z
VOLTAGE
RANGE
COMP (ea) OFM (ea) IFM
RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP Draw
EFF at Full
Load FLA
MIN MAX
2 0 8 --- 1 --- 6 0 187 253 21.8 117 325 1.4 D D --- S T D 980 7.8 84% 7.4
2 3 0 --- 1 --- 6 0 187 253 21.8 117 325 1.4 D D --- S T D 980 7.8 84% 7.4
2 0 8 --- 3 --- 6 0 187 253 13.7 83 325 1.4
D D --- S T D 980 7.8 84% 7.4
MED 1000 5.1 70% 4.9
HIGH 2120 5.5 80% 5.2
2 3 0 --- 3 --- 6 0 187 253 13.7 83 325 1.4
D D --- S T D 980 7.8 84% 7.4
MED 1000 5.1 70% 4.9
HIGH 2120 5.5 80% 5.2
4 6 0 --- 3 --- 6 0 414 506 6.2 41 325 0.9
D D --- S T D 980 4.2 84% 4.0
MED 1000 2.2 70% 2.1
HIGH 2120 2.7 80% 2.6
5 7 5 --- 3 --- 6 0 518 633 4.8 37 325 0.9
D D --- S T D 980 4.2 84% 4.0
MED 1000 2.0 71% 1.9
HIGH 2120 2.1 80% 2.0
TABLE 43 – 48HC**06 1--STAGE COOLING 5 TONS
V --- P h --- H z
VOLTAGE
RANGE
COMP (ea) OFM (ea) IFM
RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP Draw
EFF at Full
Load FLA
MIN MAX
2 0 8 --- 1 --- 6 0 187 253 25.0 134 325 1.4 D D --- S T D 980 7.8 84% 7.4
2 3 0 --- 1 --- 6 0 187 253 25.0 134 325 1.4 D D --- S T D 980 7.8 84% 7.4
2 0 8 --- 3 --- 6 0 187 253 15.9 110 325 1.4
D D --- S T D 980 7.8 84% 7.4
MED 2120 5.5 80% 5.2
HIGH 2615 7.9 81% 7.5
2 3 0 --- 3 --- 6 0 187 253 15.9 110 325 1.4
D D --- S T D 980 7.8 84% 7.4
MED 2120 5.5 80% 5.2
HIGH 2615 7.9 81% 7.5
4 6 0 --- 3 --- 6 0 414 506 7.0 52 325 0.9
D D --- S T D 980 4.2 84% 4.0
MED 2120 2.7 80% 2.6
HIGH 2615 3.6 81% 3.4
5 7 5 --- 3 --- 6 0 518 633 5.1 40 325 0.9
D D --- S T D 980 4.2 84% 4.0
MED 1390 2.1 81% 2.0
HIGH 3775 2.9 81% 2.8
48HC
50
ELECTRICAL INFORMATION (CON’T)
TABLE 44 – 48HC**07 1--STAGE COOLING 6 TONS
V --- P h --- H z
VOLTAGE
RANGE
COMP (ea) OFM (ea) IFM
RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP
Draw
EFF at Full
Load FLA
MIN MAX
2 0 8 --- 3 --- 6 0 187 253 19.0 123 325 1.5
STD 2120 5.5 80% 5.2
MED 2615 7.9 81% 7.5
HIGH 2615 15.8 81% 15.0
2 3 0 --- 3 --- 6 0 187 253 19.0 123 325 1.5
STD 2120 5.5 80% 5.2
MED 2615 7.9 81% 7.5
HIGH 2615 15.8 81% 15.0
4 6 0 --- 3 --- 6 0 414 506 9.7 62 325 0.8
STD 2120 2.7 80% 2.6
MED 2615 3.6 81% 3.4
HIGH 3775 7.8 81% 7.4
5 7 5 --- 3 --- 6 0 518 633 7.4 50 325 0.6
STD 2120 2.5 80% 2.4
MED 3775 2.9 81% 2.8
HIGH 3775 5.9 81% 5.6
TABLE 45 – 48HC**08 2--STAGE COOLING 7.5 TONS
V--Ph--Hz
VOLTAGE
RANGE
COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM
RLA LRA RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP
Draw
EFF at
Full
Load
FLA
MIN MAX
208--3--60 187 253 13.6 83 13.6 83 325 1.5
STD 1448 5.5 80% 5.2
MED 2278 7.9 81% 7.5
HIGH 4400 15.0 81% 15.0
230--3--60 187 253 13.6 83 13.6 83 325 1.5
STD 1448 5.5 80% 5.2
MED 2278 7.9 81% 7.5
HIGH 4400 15.0 81% 15.0
460--3--60 414 506 6.1 41 6.1 41 325 0.8
STD 1448 2.7 80% 2.6
MED 2278 3.6 81% 3.4
HIGH 4400 7.4 81% 7.4
575--3--60 518 633 4.2 33 4.2 33 325 0.6
STD 1379 2.5 80% 2.4
MED 3775 2.9 81% 2.8
HIGH 4400 5.9 81% 5.6
TABLE 46 – 48HC**09 2--STAGE COOLING 8.5 TONS
V--Ph--Hz
VOLTAGE
RANGE
COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM
RLA LRA RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP
Draw
EFF at
Full
Load
FLA
MIN MAX
208--3--60 187 253 13.7 83 13.7 83 325 1.5
STD 1448 5.46 80% 5.2
MED 2120 5.46 80% 5.2
HIGH 2694 10.5 80% 10.0
230--3--60 187 253 13.7 83 13.7 83 325 1.5
STD 1448 5.46 80% 5.2
MED 2120 5.46 80% 5.2
HIGH 2694 10.5 80% 10.0
460--3--60 414 506 6.2 41 6.2 41 325 0.8
STD 1448 2.73 80% 2.6
MED 2120 2.73 80% 2.6
HIGH 2694 4.62 80% 4.4
575--3--60 518 633 4.8 37 4.8 37 325 0.6
STD 1379 2.52 80% 2.4
MED 1390 2.1 80% 2.0
HIGH 3775 2.94 81% 2.8
48HC
51
ELECTRICAL INFORMATION (CON’T)
TABLE 47 – 48HC**12 2--STAGE COOLING 10 TONS
V--Ph--Hz
VOLTAGE
RANGE
COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM
RLA LRA RLA LRA WATTS FLA TYPE Max
WATTS
Max
AMP Draw
EFF at
Full Load FLA
MIN MAX
208--3--60 187 253 15.9 110 15.9 110 1070 6.2
STD 2120 5.5 80% 5.2
MED 3775 10.5 81% 10.0
HIGH 4400 15.0 81% 15.0
230--3--60 187 253 15.9 110 15.9 110 1070 6.2
STD 2120 5.5 80% 5.2
MED 3775 10.5 81% 10.0
HIGH 4400 15.0 81% 15.0
460--3--60 414 506 7.7 52 7.7 52 1070 3.1
STD 2120 2.7 80% 2.6
MED 3775 4.6 81% 4.4
HIGH 4400 7.4 81% 7.4
575--3--60 518 633 5.7 39 5.7 39 1070 2.5
STD 1390 2.1 80% 2.0
MED 3775 2.9 81% 2.8
HIGH 4400 5.9 81% 5.6
48HC
52
MCA/MOCP
TABLE 48 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.--3--5 TON
UNIT V --- P h --- H z IFM
TYPE
COMBUST
FAN
MOTOR
PWR
EXHAUST
NO C.O. or UNPWR C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
FLA FLA MCA
FUSE
or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
04
208/230---1--- 60 D D --- S T D 0.48 1.9 29.2 45 29 88 31.1 45 31 90
208/230---3--- 60
D D --- S T D
0.48 1.9
21.4 30 22 82 23.3 30 24 84
MED 18.9 25 19 87 20.8 30 21 89
HIGH 19.2 25 19 105 21.1 30 21 107
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
11.8 15 12 43 12.8 15 13 44
MED 9.9 15 10 45 10.9 15 11 46
HIGH 10.4 15 10 54 11.4 15 11 55
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
9.3 15 10 42 11.2 15 12 44
MED 7.2 15 743 9.1 15 945
HIGH 7.3 15 749 9.2 15 951
05
208/230---1--- 60 D D --- S T D 0.48 1.9 36.1 50 35 127 38.0 50 37 129
208/230---3--- 60
D D --- S T D
0.48 1.9
25.9 30 26 93 27.8 40 28 95
MED 23.4 30 23 98 25.3 30 25 100
HIGH 23.7 30 23 116 25.6 30 26 118
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
12.7 15 13 47 13.7 20 14 48
MED 10.8 15 11 49 11.8 15 12 50
HIGH 11.3 15 11 58 12.3 15 12 59
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
10.9 15 11 43 12.8 15 13 45
MED 8.8 15 944 10.7 15 11 46
HIGH 8.9 15 950 10.8 15 11 52
06
208/230---1--- 60 D D --- S T D 0.48 1.9 40.1 60 39 144 42.0 60 41 146
208/230---3--- 60
D D --- S T D
0.48 1.9
28.7 40 28 120 30.6 45 31 122
MED 26.5 40 26 143 28.4 40 28 145
HIGH 28.8 40 29 169 30.7 45 31 171
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
13.7 20 14 58 14.7 20 15 59
MED 12.3 15 12 69 13.3 20 13 70
HIGH 13.1 20 13 82 14.1 20 14 83
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
11.3 15 12 46 13.2 15 14 48
MED 9.3 15 953 11.2 15 11 55
HIGH 10.1 15 10 64 12.0 15 12 66
* See notes on page 56.
48HC
53
TABLE 49 – MCA/MOCP DETERMINATION WITH POWERED CONVENIENCE OUTLET--3--5 TON
UNIT V --- P h --- H z IFM
TYPE
COMBUST
FAN
MOTOR
PWR
EXHAUST
w/ PWRD C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
FLA FLA MCA
FUSE
or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
04
208/230---1--- 60 D D --- S T D 0.48 1.9 34.0 50 34 93 35.9 50 36 95
208/230---3--- 60
D D --- S T D
0.48 1.9
26.2 30 27 87 28.1 35 29 89
MED 23.7 30 24 92 25.6 30 26 94
HIGH 24.0 30 25 110 25.9 30 27 112
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
14.0 20 14 45 15.0 20 16 46
MED 12.1 15 12 47 13.1 15 13 48
HIGH 12.6 15 13 56 13.6 20 14 57
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
11.0 15 12 44 12.9 15 14 46
MED 8.9 15 945 10.8 15 11 47
HIGH 9.0 15 951 10.9 15 11 53
05
208/230---1--- 60 D D --- S T D 0.48 1.9 40.9 60 41 132 42.8 60 43 134
208/230---3--- 60
D D --- S T D
0.48 1.9
30.7 40 31 98 32.6 45 34 100
MED 28.2 40 29 103 30.1 40 31 105
HIGH 28.5 40 29 121 30.4 40 31 123
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
14.9 20 15 49 15.9 20 16 50
MED 13.0 15 13 51 14.0 20 14 52
HIGH 13.5 20 14 60 14.5 20 15 61
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
12.6 15 13 45 14.5 20 15 47
MED 10.5 15 11 46 12.4 15 13 48
HIGH 10.6 15 11 52 12.5 15 13 54
06
208/230---1--- 60 D D --- S T D 0.48 1.9 44.9 60 44 149 46.8 60 47 151
208/230---3--- 60
D D --- S T D
0.48 1.9
33.5 45 34 125 35.4 50 36 127
MED 31.3 45 31 148 33.2 45 34 150
HIGH 33.6 45 34 174 35.5 50 36 176
4 6 0 --- 3 --- 6 0
D D --- S T D
0.25 1.0
15.9 20 16 60 16.9 20 17 61
MED 14.5 20 15 71 15.5 20 16 72
HIGH 15.3 20 16 84 16.3 20 17 85
5 7 5 --- 3 --- 6 0
D D --- S T D
0.24 1.9
13.0 15 13 48 14.9 20 16 50
MED 11.0 15 11 55 12.9 15 13 57
HIGH 11.8 15 12 66 13.7 15 14 68
* See notes on page 56.
48HC
54
MCA/MOCP (CON’T)
TABLE 50 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.--6--8.5 TON
UNIT V --- P h --- H z IFM
TYPE
COMBUST
FAN
MOTOR
PWR
EXHAUST
NO C.O. or UNPWR C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
FLA FLA MCA
FUSE or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
07
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
32.0 50 31 148 35.8 50 36 152
MED 34.3 50 34 185 38.1 50 38 189
HIGH 41.8 60 43 211 45.6 60 47 215
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
16.3 25 16 75 18.1 25 18 77
MED 17.1 25 17 94 18.9 25 19 96
HIGH 21.1 30 22 107 22.9 30 24 109
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
12.9 20 13 61 16.7 20 17 65
MED 13.3 20 13 76 17.1 20 17 80
HIGH 16.1 20 16 90 19.9 25 21 94
08
( 2 --- s t a g e
cool)
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
38.8 50 41 191 42.6 50 45 195
MED 38.8 50 41 202 42.6 50 45 206
HIGH 43.6 50 46 245 47.4 60 51 249
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
17.9 20 19 95 19.7 25 21 97
MED 17.9 20 19 101 19.7 25 21 103
HIGH 19.7 25 21 123 21.5 25 23 125
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
13.1 15 14 77 16.9 20 18 81
MED 12.7 15 13 81 16.5 20 18 85
HIGH 13.5 15 14 92 17.3 20 19 96
09
( 2 --- s t a g e
cool)
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
39.0 50 41 191 42.8 50 45 195
MED 39.0 50 41 202 42.8 50 45 206
HIGH 43.8 50 46 245 47.6 60 51 249
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
18.2 20 19 95 20.0 25 21 97
MED 18.2 20 19 101 20.0 25 21 103
HIGH 20.0 25 21 123 21.8 25 23 125
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
14.4 20 15 77 18.2 20 20 81
MED 14.0 20 15 81 17.8 20 19 85
HIGH 14.8 20 16 92 18.6 20 20 96
* See notes on page 56.
48HC
55
TABLE 51 – MCA/MOCP DETERMINATION WITH POWERED CONVENIENCE OUTLET.--6--8.5 TON
UNIT V --- P h --- H z IFM
TYPE
COMBUST
FAN
MOTOR
PWR
EXHAUST
w/ PWRD C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
FLA FLA MCA
FUSE
or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
07
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
36.8 50 37 153 40.6 50 41 157
MED 39.1 50 39 190 42.9 60 44 194
HIGH 46.6 60 48 216 50.4 60 52 220
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
18.5 25 19 77 20.3 30 21 79
MED 19.3 25 19 96 21.1 30 22 98
HIGH 23.3 30 24 109 25.1 30 26 111
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
14.6 20 15 63 18.4 25 19 67
MED 15.0 20 15 78 18.8 25 19 82
HIGH 17.8 25 18 92 21.6 25 23 96
08
( 2 --- s t a g e
cool)
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
43.6 50 46 196 47.4 60 51 200
MED 43.6 50 46 207 47.4 60 51 211
HIGH 48.4 60 52 250 52.2 60 56 254
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
20.1 25 21 97 21.9 25 23 99
MED 20.1 25 21 103 21.9 25 23 105
HIGH 21.9 25 23 125 23.7 30 26 127
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
14.8 20 16 79 18.6 20 20 83
MED 14.4 20 15 83 18.2 20 20 87
HIGH 15.2 20 16 94 19.0 25 21 98
09
( 2 --- s t a g e
cool)
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
43.8 50 46 196 47.6 60 51 200
MED 43.8 50 46 207 47.6 60 51 211
HIGH 48.6 60 52 250 52.4 60 56 254
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
20.4 25 22 97 22.2 25 24 99
MED 20.4 25 22 103 22.2 25 24 105
HIGH 22.2 25 24 125 24.0 30 26 127
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
16.1 20 17 79 19.9 25 22 83
MED 15.7 20 17 83 19.5 25 21 87
HIGH 16.5 20 18 94 20.3 25 22 98
* See notes on page 56.
48HC
56
MCA/MOCP (CON’T)
TABLE 52 – MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.--10 TON
UNIT V --- P h --- H z IFM
TYPE
COMBUST
FAN
MOTOR
POWER
EXHAUST
NO C.O. or UNPWR C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
FLA FLA MCA
FUSE or
HACR
BRKR
DISC. SIZE MCA
FUSE or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
12
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
47.2 60 50 282 51.0 60 54 286
MED 52.0 60 55 325 55.8 60 60 329
HIGH 57.0 70 61 334 60.8 70 65 338
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
23.0 30 24 135 24.8 30 26 137
MED 24.8 30 26 157 26.6 30 28 159
HIGH 27.8 30 30 161 29.6 35 32 163
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
17.3 20 18 105 21.1 25 23 109
MED 18.1 20 19 116 21.9 25 24 120
HIGH 20.9 25 22 130 24.7 30 27 134
TABLE 53 – MCA/MOCP DETERMINATION WITH POWERED CONVENIENCE OUTLET--10 TON
UNIT V --- P h --- H z
IFM
COMBUST
FAN
MOTOR
POWER
EXHAUST
w/ PWRD C.O.
NO P.E. w/ P.E. (pwrd fr/ unit)
TYPE FLA FLA MCA
FUSE or
HACR
BRKR
DISC. SIZE MCA
FUSE or
HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
12
208/
2 3 0 --- 3 --- 6 0
STD
0.48 3.8
52.0 60 55 287 55.8 60 60 291
MED 56.8 70 61 330 60.6 70 65 334
HIGH 61.8 70 66 339 65.6 80 71 343
4 6 0 --- 3 --- 6 0
STD
0.25 1.8
25.2 30 27 137 27.0 30 29 139
MED 27.0 30 29 159 28.8 35 31 161
HIGH 30.0 35 32 163 31.8 35 34 165
5 7 5 --- 3 --- 6 0
STD
0.24 3.8
19.0 25 20 107 22.8 25 25 111
MED 19.8 25 21 118 23.6 30 26 122
HIGH 22.6 25 24 132 26.4 30 29 136
LEGEND:
C.O. --- Convenience outlet
DISC --- Disconnect
FLA --- Full load amps
IFM --- Indoor fan motor
LRA --- Locked rotor amps
MCA --- Minimum circuit amps
MOCP --- Maximum over current protection
P. E . --- P o w e r e x h a u s t
U N P W R D C O --- U n --- p o w e r e d c o n v e n i e n t o u t l e t
NOTES:
1. In compliance with NEC requirements for multimotor and
combination load equipment (refer to NEC Articles 430 and
440), the overcurrent protective device for the unit shall be fuse
or HACR breaker. Canadian units may be fuse or circuit break-
er.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt-
age is greater than 2%. Use the following formula to determine
thepercentageofvoltageimbalance.
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage = (224 + 231 + 226) =681
33
= 227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x 4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
48HC
57
TYPICAL WIRING DIAGRAMS
C08518
Fig. 19 -- 1--Stage Cooling Typical Power Diagram
48HC
58
TYPICAL WIRING DIAGRAMS (cont.)
C08577
Fig. 20 -- 2--Stage Cooling Typical Power Diagram
48HC
59
C08524
Fig. 21 -- 1--Stage Typical Wiring Diagram
48HC
60
C08578
Fig. 22 -- 2--Stage Typical Wiring Diagram
48HC
61
SEQUENCE OF OPERATION
General
The sequence below describes the sequence of operation
for an electro--mechanical unit with and without a factory
installed EconoMi$ertIV (called “economizer” in this
sequence). For information regarding a direct digital
controller, see the start--up, operations, and
troubleshooting manual for the applicable controller.
Electro--mechanical units with no economizer
Cooling —
When the thermostat calls for cooling, terminals G and Y1
are energized. As a result, the indoor--fan contactor (IFC)
and the compressor contactor (C1) are energized, causing
the indoor--an motor (IFM), compressor #1, and outdoor
fan to start. If the unit has 2 stages of cooling, the
thermostat will additionally energize Y2. The Y2 signal
will energize compressor contactor #2 (C2), causing
compressor #2 to start. Regardless of the number of
stages, the outdoor--fan motor runs continuously while
unit is cooling.
Heating
NOTE: WeatherMasterR(48HC) units have either 1 or 2
stages of gas heat.
When the thermostat calls for heating, power is sent to W
on the Integrated Gas Controller (IGC) board. An LED
(light--emitting diode) on the IGC board turns on and
remains on during normal operation. A check is made to
ensure that the rollout switch and limit switch are closed.
If the check was successful, the induced--draft motor is
energized, and when its speed is satisfactory, as proven by
the “hall effect” sensor, the ignition activation period
begins. The burners will ignite within 5 seconds. If the
burners do not light, there is a 22--second delay before
another 5--second attempt. This sequence is repeated for
15 minutes or until the burners light. If, after the 15
minutes, the burners still have not lit, heating is locked
out. To reset the control, break 24--v power to the
thermostat.
When ignition occurs, the IGC board will continue to
monitor the condition of the rollout switch, the limit
switches, the “hall effect” sensor, as well as the flame
sensor. 45 seconds after ignition occurs, assuming the unit
is controlled through a room thermostat set for fan auto,
the indoor--fan motor will energize (and the outdoor--air
dampers will open to their minimum position). If, for
some reason, the over--temperature limit opens prior to the
start of the indoor fan blower, the unit will shorten the
45--second delay to 5 seconds less than the time from
initiation of heat to when the limit tripped. Gas will not be
interrupted to the burners and heating will continue. Once
the fan--on delay has been modified, it will not change
back to 45 seconds until power is reset to the control.
On units with 2 stages of heat, when additional heat is
required, W2 closes and initiates power to the second
stage of the main gas valve. When the thermostat is
satisfied, W1 and W2 open and the gas valve closes,
interrupting the flow of gas to the main burners.
If the call for W1 lasted less than 1 minute, the heating
cycle will not terminate until 1 minute after W1 became
active. If the unit is controlled through a room thermostat
set for fan auto, the indoor--fan motor will continue to
operate for an additional 45 seconds then stop. If the
over--temperature limit opens after the indoor motor is
stopped, but within 10 minutes of W1 becoming inactive,
on the next cycle the time will be extended by 15 seconds.
The maximum delay is 3 minutes. Once modified, the fan
off delay will not change back to 45 seconds unless power
is reset to the control. A LED indicator is provided on the
IGC to monitor operation.
Electro--mechanical units with an economizer
Cooling —
When free cooling is not available, the compressors will
be controlled by the zone thermostat. When free cooling is
available, the outdoor--air damper is modulated by the
EconoMi$er IV control to provide a 50_F(10_C) to 55_F
(13_C) mixed--air temperature into the zone. As the mixed
air temperature fluctuates above 55_F(13_C)or below
50_F(10_C) dampers will be modulated (open or close)
to bring the mixed--air temperature back within control. If
mechanical cooling is utilized with free cooling, the
outdoor--air damper will maintain its current position at
the time the compressor is started. If the increase in
cooling capacity causes the mixed--air temperature to drop
below 45_F(7_C), then the outdoor--air damper position
will be decreased to the minimum position. If the
mixed--air temperature continues to fall, the outdoor--air
damper will close. Control returns to normal once the
mixed--air temperature rises above 48_F(9_C). The
power exhaust fans will be energized and de--energized, if
installed, as the outdoor--air damper opens and closes.
If field--installed accessory CO2sensors are connected to
the EconoMi$er IV control, a demand controlled
ventilation strategy will begin to operate. As the CO2
level in the zone increases above the CO2setpoint, the
minimum position of the damper will be increased
proportionally. As the CO2level decreases because of the
increase in fresh air, the outdoor--air damper will be
proportionally closed. For EconoMi$er IV operation, there
must be a thermostat call for the fan (G). If the unit is
occupied and the fan is on, the damper will operate at
minimum position. Otherwise, the damper will be closed.
When the EconoMi$er IV control is in the occupied mode
and a call for cooling exists (Y1 on the thermostat), the
control will first check for indoor fan operation. If the fan
is not on, then cooling will not be activated. If the fan is
on, then the control will open the EconoMi$er IV damper
to the minimum position.
48HC
62
SEQUENCE OF OPERATION (cont.)
On the initial power to the EconoMi$er IV control, it will
take the damper up to 2 1/2 minutes before it begins to
position itself. After the initial power--up, further changes
in damper position can take up to 30 seconds to initiate.
Damper movement from full closed to full open (or vice
versa) will take between 1 1/2 and 2 1/2 minutes. If free
cooling can be used as determined from the appropriate
changeover command (switch, dry bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), then the
control will modulate the dampers open to maintain the
mixed--air temperature setpoint at 50_F(10_C) to 55_F
(13_C). If there is a further demand for cooling (cooling
second stage -- Y2 is energized), then the control will
bring on compressor stage 1 to maintain the mixed--air
temperature setpoint. The EconoMi$er IV damper will be
open at maximum position. EconoMi$er IV operation is
limited to a single compressor.
Heating
The sequence of operation for the heating is the same as
an electromechanical unit with no economizer. The only
difference is how the economizer acts. The economizer
will stay at the Economizer Minimum Position while the
evaporator fan is operating. The outdoor--air damper is
closed when the indoor fan is not operating.
48HC
63
GUIDE SPECIFICATIONS -- 48HC**04--12
Note about this specification:
This specification is in the “Masterformat” as published by the Construction Specification Institute. Please feel free to copy
this specification directly into your building spec.
Gas Heat/Electric Cooling Packaged Rooftop
HVAC Guide Specifications
SizeRange: 3to10NominalTons
Section Description
23 06 80 Schedules for Decentralized HVAC Equipment
23 06 80.13 Decentralized Unitary HVAC Equipment Schedule
23 06 80.13.A. Rooftop unit schedule
1. Schedule is per the project specification requirements.
23 07 16 HVAC Equipment Insulation
23 07 16.13 Decentralized, Rooftop Units:
23 07 16.13.A. Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 1/2--in. thick, minimum 1 1/2 lb density, flexible
fiberglass insulation bonded with a phenolic binder, neoprene coated on the air side.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 07 16.13.B. Gas heat compartment:
1. Aluminum foil--faced fiberglass insulation shall be used.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 09 13 Instrumentation and Control Devices for HVAC
23 09 13.23 Sensors and Transmitters
23 09 13.23.A. Thermostats
1. Thermostat must
a. energize both “W” and “G” when calling for heat.
b. have capability to energize 2 different stages of cooling, and 2 different stages of heating.
c. include capability for occupancy scheduling.
23 09 23 Direct--digital Control system for HVAC
23 09 23.13 Decentralized, Rooftop Units:
23 09 23.13.A. PremierLinktcontroller
1. Shall be ASHRAE 62--2001 compliant.
2. Shall accept 18--32 VAC input power.
3. Shall have an operating temperature range from --40_F(--40_C) to 158_F(70_C), 10% -- 95% RH (non--condens-
ing).
4. Shall include an integrated economizer controller to support an economizer with 4 to 20 mA actuator input and no
microprocessor controller.
5. Controller shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, in-
door air quality, outdoor air quality, indoor relative humidity, compressor lock--out, fire shutdown, enthalpy, fan
status, remote time clock/door switch.
6. Shall accept a CO2sensor in the conditioned space, and be Demand Control Ventilation (DCV) ready.
48HC
64
7. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve/ dehumidify/ occupied.
8. Unit shall provide surge protection for the controller through a circuit breaker.
9. Shall be Internet capable, and communicate at a Baud rate of 38.4K or faster
10. Shall have an LED display independently showing the status of activity on the communication bus, and processor
operation.
11. Shall include an EIA--485 protocol communication port, an access port for connection of either a computer or a
Carrier technician tool, an EIA--485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks plug--in communications card.
12. Shall have built--in Carrier Comfort Networkt(CCN) protocol, and be compatible with other CCN devices, in-
cluding ComfortLinktand ComfortVIEWtcontrollers.
13. Shall have built--in support for Carrier technician tool.
14. Software upgrades will be accomplished by local download. Software upgrades through chip replacements are not
allowed.
15. Shall be shock resistant in all planes to 5G peak, 11ms during operation, and 100G peak, 11ms during storage.
16. Shall be vibration resistant in all planes to 1.5G @ 20--300 Hz.
17. Shall support a bus length of 4000 ft (1219m) max, 60 devices per 1000 ft (305m) section, and 1 RS--485 repeater
per 1000 ft (305m) sections.
23 09 23.13.B. RTU Open -- multi--protocol, direct digital controller:
1. Shall be ASHRAE 62--2001 compliant.
2. Shall accept 18--30VAC, 50--60Hz, and consumer 15VA or less power.
3. Shall have an operating temperature range from --40_F(--40_C) to 130_F(54_C), 10% -- 90% RH (non--condens-
ing).
4. Shall include built--in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2
and LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate com-
munication board.
5. Shall allow access of up to 62 network variables (SNVT). Shall be compatible with all open controllers
6. Baud rate Controller shall be selectable using a dipswitch.
7. Shall have an LED display independently showing the status of serial communication, running, errors, power, all
digital outputs, and all analog inputs.
8. Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air qu-
ality, outdoor air quality, compressor lock--out, fire shutdown, enthalpy switch, and fan status/filter status/ humid-
ity/ remote occupancy.
9. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve.
10. Shall have built--in surge protection circuitry through solid state polyswitches. Polyswitches shall be used on in-
coming power and network connections. Polyswitches will return to normal when the “trip” condition clears.
11. Shall have a battery back--up capable of a minimum of 10,000 hours of data and time clock retention during power
outages.
12. Shall have built--in support for Carrier technician tool.
13. Shall include an EIA--485 protocol communication port, an access port for connection of either a computer or a
Carrier technician tool, an EIA--485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks communications card.
14. Software upgrades will be accomplished by either local or remote download. No software upgrades through chip
replacements are allowed.
23 09 33 Electric and Electronic Control System for HVAC
23 09 33.13 Decentralized, Rooftop Units:
23 09 33.13.A. General:
1. Shall be complete with self--contained low--voltage control circuit protected by a resettable circuit breaker on the
24--v transformer side. Transformer shall have 75VA capability.
2. Shall utilize color--coded wiring.
3. Shall include a central control terminal board to conveniently and safely provide connection points for vital con-
trol functions such as: smoke detectors, phase monitor, gas controller, economizer, thermostat, DDC control op-
tions, and low and high pressure switches.
4. The heat exchanger shall be controlled by an integrated gas controller (IGC) microprocessor. See heat exchanger
section of this specification.
48HC
65
5. Unit shall include a minimum of one 8--pin screw terminal connection board for connection of control wiring.
23 09 33.23.B. Safeties:
1. Compressor over--temperature, over--current. High internal pressure differential.
2. Low--pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross--wiring of the safety switches between circuits 1 and 2.
b. Low pressure switch shall use different color wire than the high pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
3. High--pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross--wiring of the safety switches between circuits 1 and 2.
b. High pressure switch shall use different color wire than the low pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
4. Automatic reset, motor thermal overload protector.
5. Heating section shall be provided with the following minimum protections:
a. High--temperature limit switches.
b. Induced draft motor speed sensor.
c. Flame rollout switch.
d. Flame proving controls.
23 09 93 Sequence of Operations for HVAC Controls
23 09 93.13 Decentralized, Rooftop Units:
23 09 93.13 INSERT SEQUENCE OF OPERATION
23 40 13 Panel Air Filters
23 40 13.13 Decentralized, Rooftop Units:
23 40 13.13.A. Standard filter section
1. Shall consist of factory--installed, low velocity, disposable 2--in. thick fiberglass filters of commercially available
sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.
3. Filters shall be accessible through an access panel with “no--tool” removal as described in the unit cabinet section
of this specification (23 81 19.13.H).
23 81 19 Self--Contained Air Conditioners
23 81 19.13 Small--Capacity Self--Contained Air Conditioners (48HC**04--12)
23 81 19.13.A. General
1. Outdoor, rooftop mounted, electrically controlled, heating and cooling unit utilizing a fully hermetic scroll com-
pressor(s) for cooling duty and gas combustion for heating duty.
2. Factory assembled, single--piece heating and cooling rooftop unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, and special features required prior to field start--up.
3. Unit shall use environmentally sound, PuronRrefrigerant.
4. Unit shall be installed in accordance with the manufacturer’s instructions.
5. Unit must be selected and installed in compliance with local, state, and federal codes.
23 81 19.13.B. Quality Assurance
1. Unit meets ASHRAE 90.1--2007 minimum efficiency requirements.
2. 3 phase units are Energy Star certified.
3. Unit shall be rated in accordance with AHRI Standards 210/240 and 340/360.
4. Unit shall be designed to conform to ASHRAE 15, 2001.
5. Unit shall be UL--tested and certified in accordance with ANSI Z21.47 Standards and UL--listed and certified
under Canadian standards as a total package for safety requirements.
6. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
7. Unit casing shall be capable of withstanding 500--hour salt spray exposure per ASTM B117 (scribed specimen).
8. Unit casing shall be capable of withstanding Federal Test Method Standard No. 141 (Method 6061) 5000--hour salt
spray.
9. Unit shall be designed in accordance with ISO 9001:2008, and shall be manufactured in a facility registered by
ISO 9001:2008.
48HC
66
10. Roof curb shall be designed to conform to NRCA Standards.
11. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be
stored at the factory, and must be available upon request.
12. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.
13. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control box up
to 40 mph.
14. Unit shake tested to assurance level 1, ASTM D4169 to ensure shipping reliability.
23 81 19.13.C. Delivery, Storage, and Handling
1. Unit shall be stored and handled per manufacturer’s recommendations.
2. Lifted by crane requires either shipping top panel or spreader bars.
3. Unit shall only be stored or positioned in the upright position.
23 81 19.13.E. Project Conditions
1. As specified in the contract.
23 81 19.13.F. Operating Characteristics
1. Unit shall be capable of starting and running at 125_F(52_C) ambient outdoor temperature, meeting maximum
load criteria of AHRI Standard 210/240 or 340/360 at ±10% voltage.
2. Compressor with standard controls shall be capable of operation down to 35_F(2_C), ambient outdoor temperat-
ures. Accessory low ambient kits shall be available if operation below 35_F(2_C), is required. See below for
head pressure control package or winter start kit.
3. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
4. Unit shall be factory configured for vertical supply & return configurations.
5. Unit shall be field convertible from vertical to horizontal configuration without the use of special conversion kits.
6. Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical
return.
23 81 19.13.G. Electrical Requirements
1. Main power supply voltage, phase, and frequency must match those required by the manufacturer.
23 81 19.13.H. Unit Cabinet
1. Unit cabinet shall be constructed of galvanized steel, and shall be bonderized and coated with a pre--painted baked
enamel finish on all externally exposed surfaces.
2. Unit cabinet exterior paint shall be: film thickness, (dry) 0.003 inches minimum, gloss (per ASTM D523, 60_F/
16_C): 60, Hardness: H--2H Pencil hardness.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360
minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2--in. thick, 1 lb density,
flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil--faced fiberglass insulation shall be
used in the gas heat compartment.
4. Base of unit shall have a minimum of four locations for thru--the--base gas and electrical connections (factory
installed or field installed), standard.
5. Base Rail
a. Unit shall have base rails on a minimum of 4 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop by fork truck.
d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:
a. Shall be an internally sloped condensate drain pan made of a non--corrosive material.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 3/4” --14 NPT drain connection, possible either through the bottom or side of the drain pan. Con-
nection shall be made per manufacturer’s recommendations.
7. Top panel:
a. Shall be a single piece top panel on 04 thru 12 sizes.
8. Gas Connections:
a. All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit (ho-
rizontal plane).
b. Thru--the--base capability
(1.) Standard unit shall have a thru--the--base gas--line location using a raised, embossed portion of the unit
basepan.
48HC
67
(2.) Optional, factory--approved, water--tight connection method must be used for thru--the--base gas connec-
tions.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
9. Electrical Connections
a. All unit power wiring shall enter unit cabinet at a single, factory--prepared, knockout location.
b. Thru--the--base capability.
(1.) Standard unit shall have a thru--the--base electrical location(s) using a raised, embossed portion of the unit
basepan.
(2.) Optional, factory--approved, water--tight connection method must be used for thru--the--base electrical con-
nections.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
10. Component access panels (standard)
a. Cabinet panels shall be easily removable for servicing.
b. Unit shall have one factory installed, tool--less, removable, filter access panel.
c. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and com-
pressors shall have a molded composite handles.
d. Handles shall be UV modified, composite. They shall be permanently attached, and recessed into the panel.
e. Screws on the vertical portion of all removable access panel shall engage into heat resistant, molded compos-
ite collars.
f. Collars shall be removable and easily replaceable using manufacturer recommended parts.
23 81 19.13.I. Gas Heat
1. General
a. Heat exchanger shall be an induced draft design. Positive pressure heat exchanger designs shall not be al-
lowed.
b. Shall incorporate a direct--spark ignition system and redundant main gas valve.
c. Gas supply pressure at the inlet to the rooftop unit gas valve must match that required by the manufacturer.
2. The heat exchanger shall be controlled by an integrated gas controller (IGC) microprocessor.
a. IGC board shall notify users of fault using an LED (light--emitting diode).
b. The LED shall be visible without removing the control box access panel.
c. IGC board shall contain algorithms that modify evaporator--fan operation to prevent future cycling on high
temperature limit switch.
d. Unit shall be equipped with anti--cycle protection with one short cycle on unit flame rollout switch or 4 con-
tinuous short cycles on the high temperature limit switch. Fault indication shall be made using an LED.
3. Standard Heat Exchanger construction
a. Heat exchanger shall be of the tubular--section type constructed of a minimum of 20--gauge steel coated with a
nominal 1.2 mil aluminum--silicone alloy for corrosion resistance.
b. Burners shall be of the in--shot type constructed of aluminum--coated steel.
c. Burners shall incorporate orifices for rated heat output up to 2000 ft (610m) elevation. Additional accessory
kits may be required for applications above 2000 ft (610m) elevation, depending on local gas supply condi-
tions.
d. Each heat exchanger tube shall contain multiple dimples for increased heating effectiveness.
4. Optional Stainless Steel Heat Exchanger construction
a. Use energy saving, direct--spark ignition system.
b. Use a redundant main gas valve.
c. Burners shall be of the in--shot type constructed of aluminum--coated steel.
d. All gas piping shall enter the unit cabinet at a single location on side of unit (horizontal plane).
e. The optional stainless steel heat exchanger shall be of the tubular--section type, constructed of a minimum of
20--gauge type 409 stainless steel.
f. Type 409 stainless steel shall be used in heat exchanger tubes and vestibule plate.
g. Complete stainless steel heat exchanger allows for greater application flexibility.
5. Optional Low NOxHeat Exchanger construction
a. Low NOxreduction shall be provided to reduce nitrous oxide emissions to meet California’s Air Quality Man-
agement District (SCAQMD) low--NOxemissions requirement of 40 nanograms per joule or less.
b. Primary tubes and vestibule plates on low NOxunits shall be 409 stainless steel. Other components shall be
aluminized steel.
48HC
68
6. Induced draft combustion motor and blower
a. Shall be a direct--drive, single inlet, forward--curved centrifugal type.
b. Shall be made from steel with a corrosion--resistant finish.
c. Shall have permanently lubricated sealed bearings.
d. Shall have inherent thermal overload protection.
e. Shall have an automatic reset feature.
23 81 19.13.J. Coils
1. Standard Aluminum Fin/Copper Tube Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seam-
less internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL 1995 burst
test at 1775 psig.
c. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst
test at 1980 psig.
2. Optional Pre--coated aluminum--fin condenser coils:
a. Shall have a durable epoxy--phenolic coating to provide protection in mildly corrosive coastal environments.
b. 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.
c. Epoxy--phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper--fin evaporator and condenser coils:
a. Shall be constructed of copper fins mechanically bonded to copper tubes and copper tube sheets.
b. Galvanized steel tube sheets shall not be acceptable.
c. A polymer strip shall prevent coil assembly from contacting the sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan.
4. Optional E--coated aluminum--fin evaporator and condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without material
bridging between fins.
b. Coating process shall ensure complete coil encapsulation of tubes, fins and headers.
c. Color shall be high gloss black with gloss per ASTM D523--89.
d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.
e. Superior hardness characteristics of 2H per ASTM D3363--92A and cross--hatch adhesion of 4B--5B per ASTM
D3359--93.
f. Impact resistance shall be up to 160 in.--lb (ASTM D2794--93).
g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively (ASTM
D2247--92 and ASTM D870--92).
h. Corrosion durability shall be confirmed through testing to be no less than 1000 hours salt spray per ASTM
B117--90.
5. Optional E--coated aluminum--fin, aluminum tube condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil external surface areas without mater-
ial bridging between fins or louvers.
b. Coating process shall ensure complete coil encapsulation, including all exposed fin edges.
c. E--coat thickness of 0.8 to 1.2 mil with top coat having a uniform dry film thickness from 1.0 to 2.0 mil on all
external coil surface areas, including fin edges, shall be provided.
d. Shall have superior hardness characteristics of 2H per ASTM D3363--00 and cross--hatch adhesion of 4B--5B
per ASTM D3359--02.
e. Shall have superior impact resistance with no cracking, chipping or peeling per NSF/ANSI 51--2002 Method
10.2.
23 81 19.13.K. Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. Thermostatic Expansion Valve (TXV) shall help provide optimum performance across the entire operating
range. Shall contain removable power element to allow change out of power element and bulb without remov-
ing the valve body.
b. Refrigerant filter drier -- Solid core design.
c. Service gauge connections on suction and discharge lines.
d. Pressure gauge access through a specially designed access port in the top panel of the unit.
48HC
69
2. There shall be gauge line access port in the skin of the rooftop, covered by a black, removable plug.
a. The plug shall be easy to remove and replace.
b. When the plug is removed, the gauge access port shall enable maintenance personnel to route their pressure
gauge lines.
c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling the read-
ing with the compressor access panel on.
d. The plug shall be made of a leak proof, UV--resistant, composite material.
3. Compressors
a. Unit shall use fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Models shall be available with single compressor/single stage cooling designs on 04 – 07 sizes models, and 2
compressor/2 stage cooling models on 08 – 12 sizes.
c. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
d. Compressors shall be internally protected from high discharge temperature conditions.
e. Compressors shall be protected from an over--temperature and over--amperage conditions by an internal, motor
overload device.
f. Compressor shall be factory mounted on rubber grommets.
g. Compressor motors shall have internal line break thermal, current overload and high pressure differential pro-
tection.
h. Crankcase heaters shall not be required for normal operating range, unless provided by the factory.
23 81 19.13.L. Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by a pivoting filter tray, facilitating easy removal and installation.
3. Shall consist of factory--installed, low velocity, throw--away 2--in. thick fiberglass filters.
4. Filters shall be standard, commercially available sizes.
5. Only one size filter per unit is allowed.
23 81 19.13.M. Evaporator Fan and Motor
1. Evaporator fan motor:
a. Shall have permanently lubricated bearings.
b. Shall have inherent automatic--reset thermal overload protection or circuit breaker.
c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors above that rating
shall be required.
2.ElectricDrive(DirectDrive)X13–5Speed/TorqueEvaporatorFan:
a. Multi speed motor with easy quick adjustment settings.
b. Blower fan shall be double--inlet type with forward--curved blades.
c. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
d. Standard on all 04--06 models with 208/230/1/60 operation
e. Standard on all 04--06 3--phase models, with optional belt drive.
3. Belt--driven Evaporator Fan:
a. Belt drive shall include an adjustable--pitch motor pulley.
b. Shall use sealed, permanently lubricated ball--bearing type.
c. Blower fan shall be double--inlet type with forward--curved blades.
d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
e. Standard on all 07--12 size models. Optional on all 04--06 3--phase models.
23 81 19.13.N. Condenser Fans and Motors
1. Condenser fan motors:
a. Shall be a totally enclosed motor.
b. Shall use permanently lubricated bearings.
c. Shall have inherent thermal overload protection with an automatic reset feature.
d. Shall use a shaft--down design on 04 to 12 models and shaft--up on 14 size with rain shield.
2. Condenser Fans:
a. Shall be a direct--driven propeller type fan.
b. Shall have aluminum blades riveted to corrosion--resistant steel spiders and shall be dynamically balanced.
23 81 19.13.O. Special Features Options and Accessories
1. Integrated Economizers:
48HC
70
a. Integrated, gear--driven parallel modulating blade design type capable of simultaneous economizer and com-
pressor operation.
b. Independent modules for vertical or horizontal return configurations shall be available. Vertical return modules
shall be available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or return
shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or hu-
midity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive
air stream control.
f. Shall be equipped with low--leakage dampers, not to exceed 2% leakage at 1 in. wg pressure differential.
g. Shall be capable of introducing up to 100% outdoor air.
h. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air.
i. Shall be designed to close damper(s) during loss--of--power situations with spring return built into motor.
j. Dry bulb outdoor--air temperature sensor shall be provided as standard. Outdoor air sensor setpoint shall be
adjustable and shall range from 40 to 100_F/4to38_C. Additional sensor options shall be available as ac-
cessories.
k. The economizer controller shall also provide control of an accessory power exhaust unit. function. Factory set
at 100%, with a range of 0% to 100%.
l. The economizer shall maintain minimum airflow into the building during occupied period and provide design
ventilation rate for full occupancy. A remote potentiometer may be used to override the damper setpoint.
m. Dampers shall be completely closed when the unit is in the unoccupied mode.
n. Economizer controller shall accept a 2--10Vdc CO2sensor input for IAQ/DCV control. In this mode, dampers
shall modulate the outdoor--air damper to provide ventilation based on the sensor input.
o. Compressor lockout sensor shall open at 35_F(2_C) and close closes at 50_F(10_C).
p. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be acceptable.
q. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the exhaust
fan contact is closed.
2. Two--Position Damper
a. Damper shall be a Two--Position Damper. Damper travel shall be from the full closed position to the field ad-
justable %--open setpoint.
b. Damper shall include adjustable damper travel from 25% to 100% (full open).
c. Damper shall include single or dual blade, gear driven dampers and actuator motor.
d. Actuator shall be direct coupled to damper gear. No linkage arms or control rods shall be acceptable.
e. Damper will admit up to 100% outdoor air for applicable rooftop units.
f. Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.
g. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.
h. Outside air hood shall include aluminum water entrainment filter.
3. Manual damper
a. Manual damper package shall consist of damper, air inlet screen, and rain hood which can be preset to admit
up to 25 or 50% outdoor air for year round ventilation.
4. Head Pressure Control Package
a. Controller shall control coil head pressure by condenser--fan speed modulation or condenser--fan cycling and
wind baffles.
b. Shall consist of solid--state control and condenser--coil temperature sensor to maintain condensing temperature
between 90_F(32_C) and 110_F(43_C)at outdoor ambient temperatures down to --20_F(--29_C).
5. Propane Conversion Kit
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit for use
with liquefied propane, up to 2000 ft (610m) elevation.
b. Additional accessory kits may be required for applications above 2000 ft (610m) elevation.
6. Flue Shield
a. Flue shield shall provide protection from the hot sides of the gas flue hood.
7. Condenser Coil Hail Guard Assembly
a. Shall protect against damage from hail.
b. Shall be of louvered style.
48HC
71
8. Unit--Mounted, Non--Fused Disconnect Switch:
a. Switch shall be factory--installed, internally mounted.
b. National Electric Code (NEC) and UL approved non--fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit.
d. Shall provide local shutdown and lockout capability.
9. Convenience Outlet:
a. Powered convenience outlet.
(1.) Outlet shall be powered from main line power to the rooftop unit.
(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by
code. If outlet is powered from load side of disconnect, unit electrical ratings shall be UL certified and
rated for additional outlet amperage.
(3.) Outlet shall be factory--installed and internally mounted with easily accessible 115--v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Voltage required to operate convenience outlet shall be provided by a factory--installed step--down trans-
former.
(6.) Outlet shall be accessible from outside the unit.
(7.) Outlet shall include a field--installed “Wet in Use” cover.
b. Non--Powered convenience outlet.
(1.) Outlet shall be powered from a separate 115/120v power source.
(2.) A transformer shall not be included.
(3.) Outlet shall be factory--installed and internally mounted with easily accessible 115--v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Outlet shall be accessible from outside the unit.
(6.) Outlet shall include a field--installed “Wet in Use” cover.
10. Flue Discharge Deflector:
a. Flue discharge deflector shall direct unit exhaust vertically instead of horizontally.
b. Deflector shall be defined as a “natural draft” device by the National Fuel and Gas (NFG) code.
11. Thru--the--Base Connectors:
a. Kits shall provide connectors to permit gas and electrical connections to be brought to the unit through the
unit basepan.
b. Minimum of four connection locations per unit.
12. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economizer.
b. Independent modules for vertical or horizontal return configurations shall be available.
c. Horizontal power exhaust is shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized when
dampers open past the 0--100% adjustable setpoint on the economizer control.
13. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the
exhaust air without supply air contamination.
b. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
14. High Altitude Gas Conversion Kit:
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit to op-
erate from 2000--7000 ft (610 to 2134m) elevation with natural gas or from 0--7000 ft (90--2134m) elevation
with liquefied propane.
15. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in conjunction
with a return air enthalpy sensor, the unit will provide differential enthalpy control. The sensor allows the unit
to determine if outside air is suitable for free cooling.
16. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide dif-
ferential enthalpy control.
17. Indoor Air Quality (CO2)Sensor:
a. Shall be able to provide demand ventilation indoor air quality (IAQ) control.
48HC
72
b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The setpoint
shall have adjustment capability.
18. Smoke detectors (factory--installed only):
a. Shall be a Four--Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift--free sensitivity.
c. Shall use magnet--activated test/reset sensor switches.
d. Shall have tool--less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
(1.) One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire
alarm control panel.
(2.) Two Form--C auxiliary alarm relays for interface with rooftop unit or other equipment.
(3.) One Form--C supervision (trouble) relay to control the operation of the Trouble LED on a remote test/reset
station.
(4.) Capable of direct connection to two individual detector modules.
(5.) Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications
19. Winter start kit
a. Shall contain a bypass device around the low pressure switch.
b. Shall be required when mechanical cooling is required down to 25_F(--4_C).
c. Shall not be required to operate on an economizer when below an outdoor ambient of 40_F(4_C).
20. Time Guard
a. Shall prevent compressor short cycling by providing a 5--minute delay (±2 minutes) before restarting a com-
pressor after shutdown for any reason.
b. One device shall be required per compressor.
21. Hinged Access Panels
a. Shall provide easy access through integrated quarter turn latches.
b. Shall be on major panels of – filter, control box, fan motor and compressor
48HC

Navigation menu