Carrier 48Tjd Users Manual

48TJD to the manual 25e12fbc-f84a-4235-9552-30e51778a298

2015-01-24

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 534-774 Printed in U.S.A. Form 48TJ-18SI Pg 1 10-00 Replaces: 48TJ-16SI
Book 1 4
Ta b 1 a 6 a
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1
•ROOF CURB
SLAB MOUNT
Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . . . 2
Step 3 — Install External Trap for
Condensate Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 2
• POSITIONING
Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . 4
Step 7 — Make Electrical Connections . . . . . . . . . . . 5
DISCONNECT BOX LOCATION
FIELD POWER SUPPLY
FIELD CONTROL WIRING
HEAT ANTICIPATOR SETTINGS
Step 8 — Make Outdoor-Air Adjustment and
Install Outdoor-Air Hood . . . . . . . . . . . . . . . . . . . . . . 12
MANUAL OUTDOOR-AIR DAMPER
OPTIONAL DURABLADE ECONOMIZER
OPTIONAL ECONOMI$ER
Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . 20
DIRECT-DRIVE MOTORS
BELT-DRIVE MOTORS
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-39
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-44
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 45-50
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.
INSTALLATION
Unit is shipped in the vertical discharge configuration. To
convert to horizontal configuration, remove screws from side
duct opening covers and remove covers. Using the same
screws, install covers on vertical duct openings with the insula-
tion side down. Seals around duct openings must be tight. See
Fig. 1.
Step 1 — Provide Unit Support
ROOF CURB Assemble and install accessory roof curb in
accordance with instructions shipped with curb. See Fig. 2. In-
stall insulation, cant strips, roofing felt, and counter flashing as
shown. Ductwork must be attached to curb, not to the unit. The
accessory thru-the-bottom power and gas connection package
must be installed before the unit is set on the roof curb. If field-
installed (thru-the-roof curb) gas connections are desired, use
factory-supplied 3/4 in. pipe coupling and gas plate assembly to
mount the thru-the-roof curb connection to the roof curb. Gas
connections and power connections to the unit must be field in-
stalled after the unit is installed on the roof curb.
If electric and control wiring is to be routed through the
basepan, attach the accessory thru-the-bottom service connec-
tions to the basepan in accordance with the accessory installa-
tion instructions.
Ensure voltage listed on unit data plate agrees with electri-
cal supply provided for the unit.
Disconnect gas piping from unit when leak
testing at pressure greater than 1/2 psig. Pres-
sures greater than 1/2 psig will cause gas valve
damage resulting in hazardous condition. If
gas valve is subjected to pressure greater than
1/2 psig, it must be replaced before use. When
pressure testing field-supplied gas piping at
pressures of 1/2 psig or less, a unit connected to
such piping must be isolated by manually clos-
ing the gas valve.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and install lockout
tag. Electrical shock could cause personal injury.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for a watertight seal. Install gasket supplied
with the roof curb as shown in Fig. 2. Improperly
applied gasket can also result in air or water leaks and
poor unit performance.
48TJE,TJF004
48TJD,TJE,TJF005-007
Single-Package Rooftop Heating/Cooling Units
2
Curb should be level. Unit leveling tolerances are shown in
Fig. 3. This is necessary for unit drain to function properly. Re-
fer to Accessory Roof Curb Installation Instructions for addi-
tional information as required.
SLAB MOUNT (Horizontal Units Only) — Provide a level
concrete slab that extends a minimum of 6 in. beyond unit cab-
inet. Install a gravel apron in front of condenser coil air inlet to
prevent grass and foliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
Step 2 — Field Fabricate Ductwork — Secure all
ducts to roof curb and building structure on vertical units. Do
not connect ductwork to unit. For horizontal applications, field-
supplied flanges should be attached to horizontal discharge
openings and all ductwork should be secured to the flanges. In-
sulate and weatherproof all external ductwork, joints, and roof
openings with counter flashing and mastic in accordance with
applicable codes.
Ducts passing through an unconditioned space must be in-
sulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return
should be ducted through the roof deck to comply with applica-
ble fire codes.
A minimum clearance is not required around ductwork.
Cabinet return air static shall not exceed –.30 in. wg with
EconoMi$er, or –.35 in. wg with Durablade Economizer, or
–.45 in. wg without economizer.
These units are designed for a minimum continuous return-
air temperature of 50 F (dry bulb), or an intermittent operation
down to 45 F (dry bulb) (in heating mode), such as when used
with a night set-back thermostat.
Step 3 — Install External Trap for Condensate
Drain — The unit’s 3/4-in. condensate drain connections are
located on the bottom and side of the unit. Unit discharge
connections do not determine the use of drain connections;
either drain connection can be used with vertical or horizontal
applications.
When using the standard side drain connection, make sure
the plug (Red) in the alternate bottom connection is tight before
installing the unit.
To use the bottom drain connection for a roof curb installa-
tion, relocate the factory-installed plug (Red) from the bottom
connection to the side connection. See Fig. 4. The piping for
the condensate drain and external trap can be completed after
the unit is in place.
All units must have an external trap for condensate drain-
age. Install a trap at least 4-in. deep and protect against freeze-
up. If drain line is installed downstream from the external trap,
pitch the line away from the unit at 1 in. per 10 ft of run. Do not
use a pipe size smaller than the unit connection (3/4 in.).
Step 4 — Rig and Place Unit — Inspect unit for
transportation damage. File any claim with transportation
agency. Keep unit upright and do not drop. Spreader bars are
not required if top crating is left on unit. Rollers may be used to
move unit across a roof. Level by using unit frame as a refer-
ence. See Table 1 and Fig. 5 for additional information.
Lifting holes are provided in base rails as shown in Fig. 6.
Refer to rigging instructions on unit.
All panels must be in place when rigging and lifting.
Fig. 1 — Horizontal Conversion Panels
(Viewed from Duct End)
3
TO ENSURE AIRTIGHT CONNECTION
PLACE UNIT AS CLOSE TO
END AS POSSIBLE.
TO ENSURE AIRTIGHT CONNECTION
PLACE UNIT AS CLOSE TO
END AS POSSIBLE.
Fig. 2 — Roof Curb Dimensions
ROOF CURB
ACCESSORY ‘‘AUNIT SIZE
48TJ
CRRFCURB001A00 1-2
[356] 004-007
CRRFCURB002A00 2-0
[610]
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 on each side.
7. Direction of airflow.
8. Connector packages CRBTMPWR001A00 and
2A00 are for thru-the-curb type. Packages
CRBTMPWR003A00 and 4A00 are for the thru-
the-bottom type connections.
‘B’’ ‘‘C’’ ‘D’’ ALT
DRAIN HOLE
‘‘E
Gas
“F”
Power
“G”
Control
CONNECTOR
PKG ACY
1-911/16
[551]
1-4
[406]
13/4
[44.5]
3/4
[19] NPT
3/4
[19] NPT
1/2
[12.7] NPT
CRBTMPWR001A00
11/4
[31.7] CRBTMPWR002A00
1/2
[12.7] NPT
3/4
[19] NPT CRBTMPWR003A00
3/4
[19] NPT
11/4
[31.7] CRBTMPWR004A00
4
POSITIONING — Maintain clearance around and above unit
to provide minimum distance from combustible materials,
proper airflow, and service access. See Fig. 6. A properly posi-
tioned unit will have the following clearances between unit and
roof curb: 1/4-in. clearance between roof curb and base rails on
each side and duct end of unit; 1/4-in. clearance between roof
curb and condenser coil end of unit. (See Fig. 2, section C-C.)
Do not install unit in an indoor location. Do not locate unit
air inlets within 10 ft of exhaust vents or other sources of con-
taminated air or as local codes require.
Be sure that unit is installed so that snow will not block the
combustion intake or flue outlet.
Unit may be installed directly on wood flooring or on Class
A, B, or C roof-covering material when roof curb is used.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
Flue vent discharge must have a minimum horizontal clear-
ance of 4 ft from electric and gas meters, gas regulators, and
gas relief equipment.
Minimum distance between unit and other electrically live
parts is 48 inches.
Flue gas can deteriorate building materials. Orient unit such
that flue gas will not affect building materials.
Adequate combustion-air space must be provided for proper
operation of this equipment. Be sure that installation complies
with all local codes and Section 5.3, Air for Combustion and
Ventilation, NFGC (National Fuel Gas Code), and ANSI
(American National Standards Institute) Z223.1, and NFPA
(National Fire Protection Association) 54 TIA-54-84-1.
In Canada, installation must be in accordance with the
CAN1- B149 installation codes for gas burning appliances.
After unit is in position, remove rigging skids and shipping
materials.
Step 5 — Install Flue Hood — Flue hood is shipped
screwed to the burner compartment access panel. Remove
from shipping location and using screws provided, install flue
hood and screen in location shown in Fig. 7.
For units size 004-006 being installed in California Air
Quality Management Districts, which require NOx emissions
of 40 nanograms/joule or less, a field-installed low NOx kit
must be used.
Step 6 — Install Gas Piping — Unit is equipped for
use with type of gas shown on nameplate. Refer to local build-
ing codes, or in the absence of local codes, to ANSI Z223.1 en-
titled National Fuel Gas Code. In Canada, installation must be
in accordance with the CAN1.B149.1 and CAN1.B149.2 in-
stallation codes for gas burning appliances.
For natural gas applications, gas pressure at unit gas
connection must not be less than 4 in. wg or greater than
13.0 in. wg while unit is operating. On 48TJ005,006,007 high
heat units, the gas pressure at unit gas connection must not be
less than 5 in. wg or greater than 13 in. wg while the unit is
operating. For propane applications, the gas pressure must not
be less than 5 in. wg or greater than 13 in. wg at the unit
connection.
Size gas sully piping for 0.5 in. wg maximum pressure drop.
Do not use supply pipe small than unit gas connection. Support
gas piping as shown in the table in Fig. 8. For example, a 3/4-in.
gas pipe must have one field-fabricated support beam every
8 ft. Therefore, an 18-ft long gas pipe would have a minimum
of 2 support beams, a 48-ft long pipe would have a minimum
of 6 support beams.
See Fig. 8 for typical pipe guide and locations of external
manual main shutoff valve.
DRAIN PLUG
CONDENSATE PAN (SIDE VIEW)
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B B-C A-C
0.5 1.0 1.0
Fig. 3 — Unit Leveling Tolerances
NOTE: Drain plug is shown in factory-installed position.
Fig. 4 — Internal Trap Condensate Drain
5
Step 7 — Make Electrical Connections
DISCONNECT BOX LOCATION — The field-supplied dis-
connect box may be mounted on the unit’s end panel or on the
corner post. Mount disconnect box on the left side of the rating
plate when mounting on the unit’s end panel. Do not mount the
disconnect box over the unit rating plate. When mounting
disconnect box on corner post, secure disconnect box to corner
post and condenser coil top cover. See Fig. 7.
A disconnect box mounting space is available when an op-
tional or accessory condenser coil grille is used. Mount the dis-
connect on the sheet metal provided with the condenser coil
grille. The sheet metal is located adjacent to the corner post on
the left side of the power wiring access panel.
FIELD POWER SUPPLY All units except 208/230-v
units are factory wired for the voltage shown on the nameplate.
If the 208/230-v unit is to be connected to a 208-v power sup-
ply, the transformer must be rewired by disconnecting the black
wire from the 230-v terminal wire on the transformer and con-
necting it to the 200-v red terminal of the transformer.
Refer to unit label diagram for additional information. Wir-
ing leads are provided for field service. Use copper conductors
only when splice connectors are used.
When installing units, provide a disconnect per NEC.
All field wiring must comply with NEC and local require-
ments. In Canada, electrical connections must be in accordance
with CSA (Canadian Standards Association) C22.1 Canadian
Electrical Code Part One.
Install field wiring as follows:
1. Connect ground lead to chassis ground connection when
using separate ground ties.
2. Install conduit between disconnect and side panel. Insert
conduit through power supply knockout opening. See
Fig. 9.
3. Connect power lines to power wiring leads.
4. Pigtails are provided for field power connections and are
located inside the burner access panel. See Fig. 10 and 11.
Use factory-supplied splices or Underwriters’ Laborato-
ries (UL) approved copper connector.
Unit cabinet must have an uninterrupted, unbroken electri-
cal ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control com-
partment, or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code), ANSI/NFPA, latest edition, and local electrical
codes. Do not use gas piping as an electrical ground. Fail-
ure to follow this warning could result in the installer being
liable for personal injury of others.
NOTES:
1. Dimension in ( ) is in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in
detail ‘‘A.’’ Holes in base rails are centered around the unit cen-
ter of gravity. Use wooden top skid when rigging to prevent rig-
ging straps from damaging unit.
3. Unit weights do not include economizer. See Table 1 for econo-
mizer weights.
All panels must be in place when rigging.
Fig. 5 — Rigging Details
UNIT
MAX
WEIGHT
DIMENSIONS
‘A’’ ‘‘B’’ ‘‘C’’
lb kg in. mm in. mm in. mm
48TJE,TJF004 510 231
73.69 1872 37.50 953 33.35 847
48TJD,TJE,TJF005 520 236
48TJD,TJE,TJF006 540 245
48TJD,TJE,TJF007 615 279
6
Table 1 — Physical Data
LEGEND
*Evaporator coil fin material/condenser coil fin material. Contact your local
representative for details about coated fins.
†Weight of 14-in. roof curb.
**Single phase/three-phase.
††Rollout switch lockout is manually reset by interrupting power to unit or
resetting thermostat.
NOTES:
1. The 48TJ004-007 units have a loss-of-charge (low pressure) switch
located in the liquid line.
2. High-static motor not available on single-phase units.
UNIT SIZE 48TJ E/F004 D/E/F005 D/E/F006 D/E/F007
NOMINAL CAPACITY (tons) 3456
OPERATING WEIGHT (lb)
Unit
Al/Al* 460 470 490 565
Al/Cu* 465 476 497 576
Cu/Cu* 468 482 505 587
Economizer
Durablade 34 34 34 34
EconoMi$er 47 47 47 47
Roof Curb† 115 115 115 115
COMPRESSOR Reciprocating Scroll
Quantity 1111
No. Cylinders (per Circuit) 2222
Oil (oz) 50 50 50 54
REFRIGERANT TYPE R-22
Expansion Device Acutrol™ Metering Device
Operating Charge (lb-oz)
Circuit 1 4-4 6-6 6-14 9-0
Circuit 2 ————
CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in. 1...17 2...17 2...17 2...17
Total Face Area (sq ft) 8.36 8.36 10.42 10.42
CONDENSER FAN Propeller Type
Nominal Cfm 3500 4000 4000 4000
Quantity...Diameter (in.) 1...22.0 1...22.0 1...22.0 1...22.0
Motor Hp...Rpm 1/4...1100 1/4...1100 1/4...1100 1/4...1100
Watts Input (Total) 325 325 325 325
EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in. 2...15 2...15 3...15 4...15
Total Face Area (sq ft) 4.17 5.5 5.5 5.5
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...10 x 10 1...10 x 10 1...11 x 10 1...10 x 10
Alt 1...10 x 10 1...10 x 10 1...10 x 10
High-Static 1...10 x 10 1...10 x 10 1...11 x 10 1...10 x 10
Type Drive Std Direct Direct Direct Belt
Alt Belt Belt Belt
High-Static Belt Belt Belt Belt
Nominal Cfm 1200 1600 2000 2400
Maximum Continuous Bhp Std .34 .75 1.20 2.40
Alt 1.00 1.00 1.30/2.40**
High-Static 2.40 2.40 2.90 2.90
Motor Frame Size Std 48 48 48 56
Alt 48 48 56
High-Static 56 56 56 56
Nominal Rpm High/Low Std 860/800 1075/970 1075/970
Alt 1620 1620 1725
High-Static 1725 1725 1725 1725
Fan Rpm Range Std — 1070-1460
Alt 760-1000 835-1185 900-1300
High-Static 1075-1455 1075-1455 1300-1685 1300-1685
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Std — 2.8/3.8
Alt 1.9/2.9 1.9/2.9 2.4/3.4
High-Static 2.8/3.8 2.8/3.8 3.4/4.4 3.4/4.4
Nominal Motor Shaft Diameter (in.) Std 1/21/21/25/8
Alt 1/21/25/8
High-Static 5/85/85/85/8
Fan Pulley Pitch Diameter (in.) Std ———4.5
Alt 4.5 4.0 4.5
High-Static 4.5 4.5 4.5 4.5
Belt, Quantity...Type...Length (in.) Std — 1...A...40
Alt 1...A...34 1...A...34 1...A...39
High-Static 1...A...39 1...A...39 1...A...40 1...A...40
Pulley Center Line Distance (in.) Std — 14.7-15.5
Alt 10.0-12.4 10.0-12.4 14.7-15.5
High-Static 10.0-12.4 10.0-12.4 14.7-15.5 14.7-15.5
Speed Change per Full Turn of Std ———80
Movable Pulley Flange (rpm) Alt 48 70 80
High-Static 65 65 60 60
Movable Pulley Maximum Full Turns Std ——— 5
From Closed Position Alt 555
High-Static 6655
Factory Setting Std ——— 3
Alt 333
High-Static 31/231/231/231/2
Factory Speed Setting (rpm) Std ———1225
Alt 856 975 1060
High-Static 1233 1233 1396 1396
Fan Shaft Diameter at Pulley (in.) 5/85/85/85/8
Al Aluminum
Bhp — Brake Horsepower
Cu Copper
7
Table 1 — Physical data (cont)
LEGEND
*Evaporator coil fin material/condenser coil fin material. Contact your local
representative for details about coated fins.
†Weight of 14-in. roof curb.
**Single phase/three-phase.
††Rollout switch lockout is manually reset by interrupting power to unit or
resetting thermostat.
NOTES:
1. The 48TJ004-007 units have a loss-of-charge (low-pressure) switch
located in the liquid line.
2. High-static motor not available on single-phase units.
UNIT SIZE 48TJ E/F004 D/E/F005 D/E/F006 D/E/F007
FURNACE SECTION
Rollout Switch Cutout
Temp (F)†† 195 195 195 195
Burner Orifice Diameter
(in. ...drill size)
Natural Gas Std .113...33 .113...33/.113...33/.129...30 .113...33/.113...33/.129...30 .113...33/.113...33/.129...30
Liquid Propane Alt .089...43 .089...43/.089...43/.102...38 .089...43/.089...43/.102...38 .089...43/.089...43/.102...38
Thermostat Heat Anticipator
Setting (amps)
208/230 v and 575 Stage 1 .14 .14 .14 .14
Stage 2 .14 .14 .14 .14
460 v Stage 1 .14 .14 .14 .14
Stage 2 .14 .14 .14 .14
Gas Input (Btuh) Stage 1 74,000/82,000 74,000/115,000/120,000 74,000/115,000/120,000 74,000/115,000/120,000
Stage 2 —/115,000 —/—/150,000 —/—/150,000 —/—/150,000
Efficiency (Steady State) (%) 80 80 80 80
Temperature Rise Range 25-55/55-85 25-55/35-65/50-80 25-55/35-65/50-80 25-55/35-65/50-80
Manifold Pressure (in. wg)
Natural Gas Std 3.5 3.5 3.5 3.5
Liquid Propane Alt 3.5 3.5 3.5 3.5
Gas Valve Quantity 11 1 1
Gas Valve Pressure Range
Psig 0.180-0.487 0.180-0.487 0.180-0.487 0.180-0.487
in. wg 5.0-13.5 5.0-13.5 5.0-13.5 5.0-13.5
Field Gas Connection
Size (in.) 1/21/21/21/2
HIGH-PRESSURE SWITCH (psig)
Standard Compressor 450 ± 50 500 ± 50
Internal Relief (Differential)
Cutout 428 428
Reset (Auto.) 320 320
LOSS-OF-CHARGE (LOW PRESSURE)
SWITCH (psig)
Cutout 7 ± 3
Reset (Auto.) 22 ± 7
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 ± 5
Closes 45 ± 5
OUTDOOR-AIR INLET SCREENS Cleanable
Quantity...Size (in.) 1...20 x 24 x 1
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 2...16 x 25 x 2
Al Aluminum
Bhp — Brake Horsepower
Cu Copper
8
UNIT
48TJ
STANDARD
UNIT
WEIGHT
DURABLADE
ECONOMIZER
WEIGHT
ECONOMI$ER
WEIGHT
CORNER
WEIGHT
(A)
CORNER
WEIGHT
(B)
CORNER
WEIGHT
(C)
CORNER
WEIGHT
(D)
Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg
E/F004 460 209 34 15.4 47 21.3 140 63.5 105 47.6 159 72.1 56 25.4
D/E/F005 470 213 34 15.4 47 21.3 142 64.4 106 48.1 162 73.5 60 27.2
D/E/F006 490 222 34 15.4 47 21.3 150 68.0 115 52.2 160 72.6 65 29.5
D/E/F007 565 256 34 15.4 47 21.3 165 74.8 136 61.7 200 90.7 64 29.0
CONNECTION SIZES
A11/16
Dia [27] Field Power Supply Hole
B3/4
-14 NPT Condensate Drain
C1/2
-14 NPT Gas Connection
NOTES:
1. Dimensions in [ ] are in millimeters.
2. Center of gravity.
3. Direction of airflow.
4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal dis-
charge units, field-supplied flanges should be attached to horizontal discharge openings, and all
ductwork should be attached to the flanges.
5. Minimum clearance (local codes or jurisdiction may prevail):
a. Between unit, flue side and combustible surfaces, 36 inches.
b. Bottom of unit to combustible surfaces (when not using curb), 1 inch.
Bottom of base rail to combustible surfaces (when not using curb) 0 inches.
c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater
clearance is optional.
d. Overhead, 60 in. to assure proper condenser fan operation.
e. Between units, control box side, 42 in. per NEC.
f. Between unit and ungrounded surfaces, control box side, 36 in. per NEC.
g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in.
per NEC.
h. Horizontal supply and return end, 0 inches.
6. With the exception of the clearance for the condenser coil and combustion side as stated in notes
5a, b and c, a removable fence or barricade requires no clearance.
7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering
material if set on base rail.
8. The vertical center of gravity is 1-6 [457] up from the bottom of the base rail.
BOTTOM POWER CHART, THESE HOLES REQUIRED FOR
USE WITH ACCESSORY PACKAGES — CRBTMPWR001A00,
(POWER AND CONTROL) AND CRBTMPWR003A00
(POWER, CONTROL, AND GAS)
THREADED
CONDUIT SIZE
WIRE
USE
REQURED
HOLE SIZES (MAX.)
1/2
24 V 7/8
[22.2]
3/4
Power 11/8
[28.4]
1/2
FPT Gas 11/4
[31.8]
Fig. 6 — Base Unit Dimensions
9
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate (see Table 2).
On 3-phase units, voltages between phases must be balanced
within 2% and the current within 10%. Use the formula shown
in the legend for Table 2, Note 2 to determine the percent of
voltage imbalance. Operation on improper line voltage or ex-
cessive phase imbalance constitutes abuse and may cause dam-
age to electrical components. Such operation would invalidate
any applicable Carrier warranty.
FIELD CONTROL WIRING — Install a Carrier-approved
accessory thermostat assembly according to installation in-
structions included with the accessory. Locate thermostat
assembly on a solid wall in the conditioned space to sense aver-
age temperature in accordance with thermostat installation
instructions. Connect thermostat wires to terminal board.
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals through connector on unit to low-
voltage connections (shown in Fig. 12).
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft,
use no. 16 AWG insulated wire (35 C minimum). For over
75 ft, use no. 14 AWG insulated wire (35 C minimum). All
wire larger than no. 18 AWG cannot be directly connected to
the thermostat and will require a junction box and splice at the
thermostat.
Feed control wires through the raceway located between the
condenser coil top cover and burner side panel. See Fig. 10.
Connect control wires to corresponding screw terminals, the
low-voltage connections located inside low-voltage access
panel. See Fig. 12 for connections. The low-voltage connec-
tions provide the UL required clearance between high- and
low-voltage wiring.
HEAT ANTICIPATOR SETTINGS — Set heat anticipator
settings at .14 amp for the first stage and .14 amp for second-
stage heating, when available.
CONDENSER
COIL
TOP COVER
INTAKE
LOUVERS
CORNER POST
FLUE HOOD END PANEL
Fig. 8 — Gas Piping Guide (With Accessory
Thru-the-Curb Service Connections)
SPACING OF SUPPORTS
STEEL PIPE
NOMINAL
DIAMETER
(in.)
X
DIMENSIONS
(feet)
1/2
3/4 or 1
11/4 or larger
6
8
10
LEGEND
*Field supplied.
NOTE: Follow all local codes.
NFGC National Fuel Gas Code
Fig. 7 — Flue Hood Details
Fig. 9 — Conduit Installation
LEGEND
Fig. 10 — Component Location
IGC Integrated Gas Unit Controller
LED Light-Emitting Diode
10
LEGEND
Fig. 11 — Power Wiring Connections
C—
Contactor
COMP Compressor
NEC National Electrical Code
TB Terminal Block
Fig. 12 — Low-Voltage Connections
LEGEND
AHA — Adjustable Heat Anticipator
Field Wiring
Factory Wiring
208/230-1-60 208/230-3-60
460-3-60
(SIZE 007 ONLY)
208/230-3-60
575-3-60, 460-3-60
(SIZES 004-006)
575-3-60
(SIZE 007 ONLY)
11
Table 2 — Electrical Data
LEGEND
*Used to determine minimum disconnect per NEC.
Fuse or HACR circuit breaker.
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 breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent
of voltage imbalance.
% Voltage Imbalance
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
= 457
Determine maximum deviation from average voltage.
(AB) 457 452 = 5 v
(BC) 464 457 = 7 v
(AC) 457 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
= 1.53%
This amount of phase imbalance is satisfactory as it is below the max-
imum allowable 2%.
UNIT
48TF
NOMINAL
V-Ph-Hz
IFM
TYPE
VOLTAGE
RANGE
COMPRESSOR
(ea)
OFM
(ea) IFM
FLA
COMBUSTION
FAN MOTOR
FLA
POWER
SUPPLY
DISCONNECT
SIZE*
Min Max RLA LRA Qty Hp FLA MCA MOCP† FLA LRA
004
208/230-1-60 Std 187 254 16.2 96.0 1 1/41.4 3.5 .6 24.5/24.5 30/30 23/23 106/106
Alt 4.9 26.6/26.6 35/35 26/26 111/111
208/230-3-60
Std
187 254 10.2 75.0 1 1/41.4
3.5
.6
17.7/17.7 25/25 17/17 85/85
Alt 4.9 19.1/19.1 25/25 19/19 90/90
High 5.2 19.4/19.4 25/25 19/19 109/109
460-3-60
Std
414 508 4.4 40.0 1 1/40.8
1.3
.3
7.6 15 7 48/48
Alt 2.1 8.4 15 8 48/48
High 2.6 8.9 15 9 57/57
575-3-60
Std
518 632 3.7 31.0 1 1/40.8
1.3
.3
6.3 15 7 35
Alt 2.1 6.9 15 8 37
High 2.6 7.3 15 7 45
005
208/230-1-60 Std 187 254 23.3 118.0 1 1/41.4 3.5 .6 34.0/34.0 40/40 32/32 129/129
Alt 4.9 35.4/35.4 45/45 34/34 133/133
208/230-3-60
Std
187 254 15.4 90.0 1 1/41.4
3.5
.6
24.2/24.2 30/30 23/23 101/101
Alt 4.9 25.6/25.6 30/30 25/25 105/105
High 5.2 25.9/25.9 30/30 25/25 124/124
460-3-60
Std
414 508 8.3 45.0 1 1/40.8
1.8
.3
13.0 20 13 51
Alt 2.1 13.3 20 13 53
High 2.6 13.8 20 13 62
575-3-60
Std
518 632 6.4 36.0 1 1/40.8
1.8
.3
10.1 15 10 41
Alt 2.1 10.3 15 11 42
High 2.6 10.7 15 10 50
006
208/230-1-60 Std 187 254 28.8 147.0 1 1/41.4 5.9 .6 43.3/43.3 60/60 42/42 161/161
Alt 6.6 44.0/44.0 60/60 42/42 184/184
208/230-3-60
Std
187 254 16.3 114.0 1 1/41.4
5.9
.6
27.3/27.3 35/35 29/29 128/128
Alt 5.2 26.6/26.6 35/35 26/26 148/148
High 7.5 28.9/28.9 35/35 29/29 174/174
460-3-60
Std
414 508 7.4 64.0 1 1/40.8
3.1
.3
13.2 20 13 72
Alt 2.6 12.7 15 12 81
High 3.4 13.5 20 13 94
575-3-60
Std
518 632 6.2 62.0 1 1/40.8
3.1
.3
10.9 15 11 58
Alt 3.0 10.5 15 10 66
High 3.4 12.6 15 11 76
007
208/230-3-60 Std 187 254 23.6 146.0 1 1/41.4 5.2 .6 30.2/30.2 35/35 29/29 180/180
High 7.5 32.5/32.5 40/40 32/32 205/205
460-3-60 Std 414 508 10.6 73.0 1 1/40.6 2.6 .3 15.4 20 15 90
High 3.4 16.1 20 16 103
575-3-60 Std 518 632 8.5 58.4 1 1/40.6 2.6 .3 12.3 15 13 72
High 3.4 12.9 20 14 82
FLA Full Load Amps
HACR Heating, Air Conditioning and Refrigeration
IFM Indoor (Evaporator) Fan Motor
LRA Locked Rotor Amps
MCA Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC National Electrical Code
OFM Outdoor (Condenser) Fan Motor
RLA Rated Load Amps
= 100 x max voltage deviation from average voltage
average voltage
Average Voltage = 452 + 464 + 455
3
= 1371
3
% Voltage Imbalance = 100 x 7
457
IMPORTANT: If the supply voltage phase imbalance is more
than 2%, contact your local electric utility company immediately.
12
Step 8 — Make Outdoor-Air Adjustments and
Install Outdoor-Air Hood
MANUAL OUTDOOR-AIR DAMPER — The outdoor-air
hood and screen are attached to the basepan at the bottom of
the unit for shipping.
Assembly:
1. Determine quantity of ventilation required for building.
Record amount for use in Step 8.
2. Remove and save outdoor air opening panel and screws.
See Fig. 13.
3. Separate hood and screen from basepan by removing the
4 screws securing them. Save all screws.
4. Replace outdoor air opening panel.
5. Place hood on front of outdoor air opening panel. See
Fig. 14 for hood details. Secure top of hood with the
4 screws removed in Step 3. See Fig. 15.
6. Remove and save 6 screws (3 on each side) from sides of
the manual outdoor-air damper.
7. Align screw holes on hood with screw holes on side of
manual outdoor-air damper. See Fig. 14 and 15. Secure
hood with 6 screws from Step 6.
8. Adjust minimum position setting of the damper blade by
adjusting the manual outdoor-air adjustment screws on
the front of the damper blade. See Fig. 13. Slide blade
vertically until it is in the appropriate position determined
by Fig. 16. Tighten screws.
9. Remove and save screws currently on sides of hood.
Insert screen. Secure screen to hood using the screws. See
Fig. 15.
OUTDOOR
AIR OPENING
PANEL
3 SCREWS
(SIDE)
Fig. 13 — Damper Panel with Manual Outdoor-Air
Damper Installed
Fig. 14 — Outdoor-Air Hood Details
Fig. 15 — Outdoor-Air Damper with
Hood Attached
Fig. 16 — Position Setting
13
OPTIONAL DURABLADE ECONOMIZER — The option-
al economizer hood assembly is packaged and shipped in the fil-
ter section. Damper blades and control boards are installed at the
factory and the economizer is shipped in the vertical discharge
position.
NOTE: Horizontal discharge block-off plate is shipped with
the air hood package. If unit is to be used for vertical discharge
application, discard this plate.
NOTE: Be sure to engage Durablade economizer flange under
tabs in return-air opening of the unit base.
Assembly:
1. Determine if ventilation air is required in building. If so,
determine the minimum amount to be supplied by each
unit and record quantity of ventilation air needed for use
in Step 6.
2. Remove filter access panel by raising panel and swinging
panel outward. Panel is now disengaged from track and
can be removed. No tools are required to remove filter ac-
cess panel. Remove outdoor-air opening panel. Save pan-
els and screws. See Fig. 17. Remove optional economizer
and outdoor-air damper hood package from filter section.
3. Assemble outdoor-air hood top and side plates as shown
in Fig. 18. Install seal strips on hood top and sides. Put
aside screen retainer and screws for later assembly. Do
not attach hood to unit at this time.
4. To convert to horizontal discharge application:
a. Rotate economizer 90 degrees until the econo-
mizer motor faces the condenser section (see
Fig. 19).
b. Remove screws and tape from damper then rotate
the barometric relief damper hinge 90 degrees.
Barometric relief damper should open vertically to
operate properly.
c. Install horizontal discharge block-off plate over
the opening on the access panel. (Block-off plate
MUST be installed before installing hood assem-
bly.) See Fig. 20. Remove 12-pin blue and yellow
wire jumper plug and store.
5. Insert economizer plug into economizer harness. Remove
tape from barometric relief damper. See Fig. 21. Remove
shipping screw (see Fig. 19).
6. If ventilation air is not required, proceed to Step 7. If ven-
tilation air is required, determine the minimum position
setting for required airflow. See Fig. 22. Adjust minimum
position setting by adjusting the screws on the position
setting bracket. Slide bracket until the top screw is in the
position determined by Fig. 22. Tighten screws.
7. Remove tape from outdoor-air thermostat (OAT). Fasten
OAT to inside of hood using screws and speed clips pro-
vided. See Fig. 23. Make sure OAT terminals are posi-
tioned up.
8. Replace outdoor-air opening panel using screws from
Step 2. Replace filter access panel. Ensure the filter ac-
cess panel slides along the tracks and is securely engaged.
9. Fasten hood top and side plate assembly (Fig. 18) to
outdoor-air opening panel with screws provided.
10. Place knob supplied with economizer on OAT. See
Fig. 23. Set OAT for 3° F below indoor room thermostat
setting. If accessory enthalpy control (EC) is used in
place of OAT, see instructions shipped with EC for instal-
lation and adjustment. See Fig. 23.
11. Connect OAT per Fig. 24.
12. Slide outdoor-air inlet screens into screen track on hood
side plate. While holding screen in place, fasten screen re-
tainer to hood using screws provided.
NOTE: Refer to Fig. 25 for economizer barometric relief
damper characteristics.
ECONOMIZER
CONTROL
BOARD
BAROMETRIC
RELIEF
DAMPER
ECONOMIZER
PLUG
ECONOMIZER
MOTOR
SHIPPING
SCREW
Fig. 18 — Outdoor-Air Hood Details
Fig. 19 — Horizontal Durablade
Economizer Installation
Fig. 17 — Typical Access Panel Locations
14
ECONOMIZER
CONTROL
BOARD
ECONOMIZER
PLUG
ECONOMIZER
MOTOR
TOP
SCREW
BAROMETRIC
RELIEF DAMPER
WIRING
HARNESS
POSITION SETTING
BRACKET
U-SHAPED
HOLE
(NOT
SHOWN)
SHIPPING
SCREW
UNIT
TOP
OAT
(TERMINALS ARE UP)
OUTSIDE AIR
SCREEN
MINIMUM
POSITION
OPEN
3
1
T
P
P1
T1
4
2
5
S
S
O
D
C
TR
B
REV.B
198818A
%
H
U
M
I
D
I
T
Y
90
70
60
30
10
DCBA
60 65 70
75
55
50 85
80
DAMPER
DAMPER
CLOSED
OPEN
OUTDOOR TEMP.°F
REV
.
97-3672
CWSETPOINTSCCW
CONTACTS SHOWN IN HIGH ENTHALPY
RUSHAT 24VAC
3 mA MIN. AT 11 VDC
CONTACT RATINGS: 1.5A RUN, 3.5A IN
OR UNPOWERED STATE
1
2
3
TR
TR1
24V
AC
ENTHALPY CONTROL
ENTHALPY
CONTROL
HOOD
BLOCK-OFF PLATE
Fig. 21 Durablade Economizer Installed in Unit
Fig. 23 Outdoor-Air Thermostat/
Enthalpy Control Installation
Example:
Given Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . 0.2 in. wg
Outdoor Air . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 900 cfm
Determine Setting = 5 in.
Fig. 22 Durablade Economizer
Minimum Position Setting
Fig. 20 Horizontal Discharge Block-Off Plate
15
OPTIONAL ECONOMI$ER — See Fig. 26 for EconoMi$er
component locations.
1. To remove the existing unit filter access panel, raise the
panel and swing the bottom outward. The panel is now
disengaged from the track and can be removed. Remove
the indoor coil access panel and discard. See Fig. 27.
If installing an optional Power Exhaust Assembly, refer to
the EconoMi$er Power Exhaust Installation Instructions.
Controller should be mounted in vertical position as
shown in Fig. 26.
2. Assemble the hood assembly as follows:
Remove the EconoMi$er hood from its packaging.
Remove shipping brackets holding hood package to
EconoMi$er. Locate the outdoor-air opening panel. See
Fig. 28. Remove hood assembly shipping brackets locat-
ed on the back (sloped) side of the EconoMi$er assembly.
These brackets are used to retain the hood assembly dur-
ing shipping only.
3. Install the 1/8 x 3/4-in. seal strip on the exhaust air hood
side panels and the bottom bracket. Assemble the exhaust
air hood to the outdoor-air opening panel as shown in
Fig. 28, using the screws provided. Do not attach hood
assembly to unit at this time.
4. Install the 1/8 x 3/4-in. seal strip on the outdoor-air hood
top and side panels. Assemble the outdoor-air hood to the
outdoor-air opening panel as shown in Fig. 29, using the
screws provided. Do not attach hood assembly to the unit
at this time.
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00 100 200 300 400 500 600 700 800
CFM
PRESSURE DROP (in. wg)
Fig. 25 Durablade Economizer
Barometric Relief Damper Characteristics
LEGEND
NOTE: See unit wiring diagram for details.
Fig. 24 Wiring Connections for
Outdoor-Air Thermostat
OAT Outdoor-Air Thermostat
Fig. 28 Exhaust Air Hood Assembly
OUTDOOR-AIR
OPENING PANEL
FILTER ACCESS
PANEL
Fig. 27 Typical Access Panel Locations
BAROMETRIC RELIEF DAMPERS
CONTROLLER
ECONOMI$ER
PLUG GEAR-DRIVEN
DAMPER
OUTDOOR AIR
TEMPERATURE
SENSOR
ACTUATOR
Fig. 26 EconoMi$er Component Locations
16
5. Slide the outdoor-air inlet screens into the screen track on
the hood side panels. While holding the screens in place,
fasten the screen retainer to the hood using the screws
provided. Repeat the process for the barometric exhaust
air screen. Do not attach completed (Fig. 30) hood as-
sembly to unit at this time.
6. Slide the EconoMi$er assembly into the rooftop unit. See
Fig. 31 and 32.
NOTE: Be sure to engage rear EconoMi$er flange under tabs in
return-air opening of the unit base. See Fig. 31.
7. Install the outdoor-air block-off plate, then secure the
EconoMi$er with the screws provided. See Fig. 32.
8. Remove and discard the 12-pin jumper plug from the unit
wiring harness located in the upper left corner and insert
the EconoMi$er plug into the unit wiring harness. Refer
to wiring diagrams Fig. 33 and 34. Also refer to Fig. 35 if
installing an accessory power exhaust.
9. Install the complete hood assembly on the unit and secure
using the screws provided.
10. Remove the indoor fan motor access panel. See Fig. 36.
11. Mount the supply-air temperature sensor to the lower
left portion of the indoor blower housing with the
two (2) screws provided (see Fig. 37). Connect the violet
and pink wires to the corresponding connections on the
supply-air temperature sensor. Replace the indoor fan
motor access panel.
SEAL STRIP
SEAL STRIP
OUTDOOR AIR
HOOD TOP
SCREEN
RETAINER
OUTDOOR AIR
INLET
SCREENS
OUTDOOR AIR
HOOD SIDES
ASSEMBLED
EXHAUST HOOD
OUTDOOR AIR
OPENING
PANEL
Fig. 29 Outdoor-Air Hood Assembly
WIRING
HARNESS
OUTDOOR
AIR
BLOCK-OFF
PLATE
Fig. 32 EconoMi$er Installed
ECONOMI$ER
ECONOMI$ER REAR
FLANGE
UNIT BASE
UNIT FILTER
RACK
ECONOMI$ER CLIP
HVAC UNIT
Fig. 31 Rear EconoMi$er Flange Installation
Fig. 30 Completed Hood Assembly
17
OUTDOOR
AIR
SENSOR
TEMP
TEMP
COM
OUT
PWR
BROWN
VIOLET
WHITE
RED
BROWN TEMP
TEMP
COM
OUT
PWR
RETURN
AIR
SENSOR
VIOLET
WHITE
RED
OAT
COM
OAH
-15 V
RAT
COM
RAH
+15 V
ECONOMI$ER
CONTROLLER
PINK TEMP
TEMP
VIOLET
SUPPLY AIR
TEMPERATURE SENSOR
V+ 24
COM VAC
SENSOR
CO2
(+)
COM
DAT
COM
REM POT
COM
LED
COM
CO2
CO2
LEGEND
Fig. 33 EconoMi$er Wiring
OAT Outdoor-Air Thermostat
Fig. 34 EconoMi$er Sensor Wiring
18
4-PIN
CONNECTOR
PLUG
L1
L2
GREEN
1
1
22
33
44
GND
230 VAC
1 PHASE
GREEN/
YELLOW
3
2
1
58
69B
A
7
4
LT. BLUE
BLACK
BROWN
C1
BLUE
GREEN/
YELLOW
3
2
1
58
69B
A
7
4
LT. BLUE
BLACK
BROWN
C1
BLUE
FAN 2
FAN 1
BLACK
BLACK
BLACK
R1
24 VAC
R2
24 VAC
BLACK
BLUE
1
2
3
BROWN
ORANGE
3-PIN
CONNECTOR
PLUG
YELLOW
RED YEL
H1
BLU GRAY
H4
SECONDARY
230VAC
X4 X1
HT01AH850
(460 VAC)
RED
H1
GRAY
H2
SECONDARY
230VAC
X4 X1
HT01AH859
(575 VAC)
23
13
11 21 230VAC
OR
BLACK L1
BLUE L2
COMPRESSOR 1
CONTACTOR
FIELD SUPPLIED
WIRING
GREEN GND
2 x 4 IN.
HANDY BOX
X3
X2
H2
H3
X2 X3
TO FUSED
DISCONNECT FAN 1 FAN 2
CAPACITOR 2
CAPACITOR 1
RELAY 2
RELAY 1
4-PIN
CONNECTOR PLUG
(HIGH VOLTAGE)
3-PIN
CONNECTOR PLUG
(LOW VOLTAGE)
CENTER PANEL
HEATING
ACCESS
PANEL
INDOOR FAN
MOTOR ACCESS
PANEL
THERMOSTAT
CONNECTION
ACCESS PANEL
Fig. 35 Wiring Diagram for Power Exhaust System
Fig. 36 Typical Access Panel Locations
(Standard Efficiency Unit Shown)
19
CO2 Control Set Up — If a CO2 sensor is not being used,
proceed to the next section. If a CO2 sensor is being used, per-
form the following:
1. Determine the value at which you want the minimum
position of the dampers to begin opening to allow a
greater amount of outdoor air to enter. The range is 800 to
1,400 ppm.
2. Locate the CO2 SP (PPM) potentiometer and adjust to the
desired set point. See Fig. 38.
Mechanical Cooling Lockout — Determine the outdoor-air
temperature at which you want the mechanical cooling (com-
pressors) to be disabled. Locate the mechanical cooling lock-
out (MECH CLG LOCKOUT) potentiometer. To disable this
feature, turn the potentiometer counterclockwise (CCW) to the
OFF position. Otherwise, set the value between 10 and 60 F.
Mechanical cooling will not operate when the outdoor air tem-
perature is below this value. See Fig. 38.
Dry Bulb Changeover Set Up — Determine the dry bulb
changeover set point from Table 3. The settings are A, B, C
and D. Locate the ECON SP potentiometer and set the dry
bulb changeover set point. See Fig. 38. When the OAT is
above this set point, the damper is limited to minimum position
setting.
Table 3 Changeover Set Points
*Field-installed accessory.
If a potentiometer fails, its setting will default to the values in
Table 4.
Table 4 Default Potentiometer Settings
Ventilation Air (Minimum Position Set up) — If ventilation
air is not required, proceed to Step 5. If ventilation air is
required, perform the following:
1. The indoor fan must be on to set the ventilation air. Either
put the thermostat in the continuous fan mode or jumper
the R and G terminals at the rooftop unit connection
board.
2. Locate the minimum position (MIN POS) potentiometer.
Turn the potentiometer full CCW to fully close the out-
door air dampers. Turn the potentiometer gradually
clockwise (CW) to the desired position. See Fig. 38.
3. Replace the filter access panel. See Fig. 26. Ensure the fil-
ter access panel slides along the tracks and is securely
engaged.
4. Calculate the minimum airflow across the EconoMi$er.
a. Calculate % of outside air using the following
formula.
% Outdoor air through EconoMi$er
b. Divide total CFM by percentage outdoor air, this
gives outdoor air volume in CFM.
5. Turn on base unit power.
NOTE: The EconoMi$er begins operation three min-
utes after power up.
6. See Fig. 39 for barometric relief damper characteristics.
SETTINGS A B C D
Dry Bulb (°F) 73 69 66 63
Single Enthalpy* (Btu/lb) 27 25 24 22
Differential Temperature*
(°F, Not Adjustable) 2222
Differential Enthalpy*
(Btu/lb, Not Adjustable) 1111
POTENTIOMETER DEFAULT SETTING
CO2 SP (PPM) 1,000
MECH CLG LOCKOUT 47°
ECON SP D
MIN POS (%) 20
% Outdoor air = Mixture Temp – Return Air Temp
Outdoor Temp – Return Air Temp
Personal Injury Hazard. Avoid possible injury by keep-
ing fingers away from damper blades.
SUPPLY AIR
TEMPERATURE
SENSOR
MOUNTING
LOCATION
SUPPLY AIR
TEMPERATURE
SENSOR
Fig. 37 Supply-Air Sensor Placement
Fig. 38 EconoMi$er Control Adjustment
Potentiometers (Factory Settings)
0200 400 600 800 1000 1200 1400 1600
FLOW (CUBIC FEET/MINUTE)
0.5
0.4
0.3
0.2
0.1
0
STATIC PRESSURE (IN. WG)
Fig. 39 Barometric Relief Capacity
20
Step 9 Adjust Evaporator-Fan Speed Ad-
just evaporator-fan rpm to meet jobsite conditions. Table 5
shows fan rpm at motor pulley settings. Table 6 shows motor
performance. See Table 7 for Accessory/FIOP Static Pressure.
Refer to Tables 8-29 to determine fan speed settings.
DIRECT-DRIVE MOTORS The evaporator-fan motor
factory speed setting is shown on label diagram affixed to base
unit. If other than factory setting is desired, refer to label dia-
gram for motor reconnection. See Fig. 40 for direct drive motor
location.
BELT-DRIVE MOTORSFan motor pulleys are factory set
for speed shown in Table 1. See Fig. 41 for belt drive location.
NOTE: Before adjusting fan speed, make sure the new fan
speed will provide an air temperature rise range as shown in
Table 1.
To change fan speed:
1. Shut off unit power supply and tag disconnect.
2. Loosen belt by loosening fan motor mounting nuts. See
Fig. 41.
3. Loosen movable pulley flange setscrew (see Fig. 42).
4. Screw movable flange toward fixed flange to increase
speed and away from fixed flange to decrease speed.
Increasing fan speed increases load on motor. Do not ex-
ceed maximum speed specified in Table 1.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Table 1 for speed change for each
full turn of pulley flange.)
To align fan and motor pulleys:
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
3. Make angular alignment by loosening motor from
mounting.
To adjust belt tension:
1. Loosen fan motor mounting nuts.
2. Slide motor mounting plate away from fan scroll for
proper belt tension (1/2-in. deflection with 8 to 10 lbs of
force).
3. Tighten motor mounting nuts.
4. Adjust bolt and tighten nut to secure motor in fixed
position.
MOTOR MOUNTING
PLATE NUTS
Fig. 41 Belt Drive Motor Mounting
Fig. 42 Evaporator-Fan Pulley Adjustment
DIRECT DRIVE MOTOR DIMPLED HEAT EXCHANGER
Fig. 40 Direct-Drive Motor Mounting
21
Table 5 Fan Rpm at Motor Pulley Settings*
*Approximate fan rpm shown.
Indicates alternate motor and drive package.
**Indicates high-static motor and drive package.
††Indicates standard motor and drive package.
Table 6 Motor Data
LEGEND
BHP Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the
full horsepower range of the motors can be utilized with confidence.
Using your fan motors up to the horsepower ratings shown in this table
will not result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected.
Single phase/three-phase.
NOTES:
1. All indoor-fan motors 5 hp and larger meet the minimum efficiency
requirements as established by the Energy Policy Act of 1992
(EPACT) effective October 24, 1997.
2. High-static motor not available on single-phase units.
Table 7 Accessory/FIOP Static Pressure* (in. wg) 48TJ004-007
LEGEND
FIOP Factory-Installed Option
*The static pressure must be added to external static pressure. The sum
and the evaporator entering-air cfm should then be used in conjunction
with the Fan Performance tables to determine blower rpm and watts.
UNIT
48TJ
MOTOR PULLEY TURNS OPEN
01/211
1/222
1/233
1/244
1/255
1/26
0041000 976 952 928 904 880 856 832 808 784 760 ——
004** 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075
0051185 1150 1115 1080 1045 1010 975 940 905 870 835 ——
005** 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075
0061300 1260 1220 1180 1140 1100 1060 1020 980 940 900 ——
006** 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 ——
007†† 1460 1420 1380 1345 1305 1265 1225 1185 1150 1110 1070 ——
007** 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 ——
UNIT
48TJ
EVAPORATOR-FAN
MOTOR
UNIT
VOLTAGE
MAXIMUM ACCEPTABLE
CONTINUOUS BHP*
MAXIMUM ACCEPTABLE
OPERATING WATTS
MAXIMUM
AMP DRAW
004
Standard
208/230
0.34 440
2.8
460 1.3
575 1.3
Alternate
208/230
1.00 1000
4.9
460 2.1
575 2.1
High Static
208/230
2.40 2120
6.0
460 3.0
575 3.0
005
Standard
208/230
0.75 850
3.5
460 1.8
575 1.8
Alternate
208/230
1.00 1000
4.9
460 2.1
575 2.1
High Static
208/230
2.40 2120
6.0
460 3.0
575 3.0
006
Standard
208/230
1.20 1340
5.9
460 3.2
575 3.2
Alternate
208/230
1.30/2.402120
10.1/6.7
460 3.0
575 3.0
High Static
208/230
2.90 2562
8.6
460 3.9
575 3.9
007
Standard
208/230
2.40 2120
6.7
460 3.0
575 3.0
High Static
208/230
2.90 2562
8.6
460 3.9
575 3.9
COMPONENT CFM
900 1200 1400 1600 1800 2000 2200 2400 2600 3000
Durablade Economizer 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
EconoMi$er 0.05 0.09 0.13 0.17 0.22 0.27 0.32 0.39 0.45 0.53
22
Table 8 Fan Performance 48TJ004 Vertical Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
Table 9 Fan Performance 48TJ004 Vertical Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 760 to 1000 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.0 and the maximum continuous
watts are 1000. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ004 (3 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed High Speed
208 V 230, 460, 575 V 208 V 230, 460, 575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
900 0.49 0.21 253 0.50 0.23 277 0.51 0.26 307 0.55 0.31 363
1000 0.42 0.23 270 0.43 0.25 292 0.43 0.27 321 0.51 0.32 374
1100 0.37 0.24 287 0.38 0.26 307 0.39 0.28 335 0.46 0.33 385
1200 0.33 0.26 304 0.33 0.27 323 0.34 0.29 349 0.40 0.34 397
1300 0.27 0.27 321 0.28 0.29 338 0.28 0.31 364 0.34 0.34 408
1400 0.20 0.29 338 0.23 0.30 354 0.25 0.32 378 ———
1500 0.16 0.30 355 0.18 0.31 369 0.20 0.33 392 ———
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
48TJ004 (3 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.5 0.6
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 581 0.12 119 673 0.18 179 736 0.22 219 805 0.25 249 865 0.29 288 911 0.34 338
1000 644 0.19 189 709 0.22 219 782 0.28 279 835 0.30 298 900 0.35 348 937 0.38 378
1100 687 0.22 219 746 0.26 259 806 0.30 298 867 0.35 348 929 0.40 398 964 0.40 398
1200 733 0.26 259 785 0.32 318 843 0.35 348 903 0.41 408 960 0.47 467 994 0.50 497
1300 754 0.29 288 826 0.38 378 891 0.43 428 942 0.48 477 991 0.53 527 1047 0.60 597
1400 810 0.35 348 868 0.45 448 937 0.51 507 984 0.57 567 1032 0.62 617 1067 0.67 666
1500 841 0.42 418 911 0.53 527 985 0.61 607 1029 0.66 656 1073 0.72 716 1109 0.77 766
48TJ004 (3 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.7 0.8 0.9 1.0 1.1 1.2
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 957 0.39 388 988 0.43 428 1039 0.47 448 1061 0.51 487 1083 0.54 527 1105 0.58 567
1000 992 0.44 438 1039 0.49 487 1061 0.55 507 1088 0.60 547 1111 0.66 587 1136 0.72 627
1100 1013 0.49 487 1068 0.55 547 1091 0.61 577 1109 0.66 607 1127 0.73 637 1145 0.80 666
1200 1045 0.56 557 1090 0.64 637 1109 0.68 647 1156 0.73 676 1203 0.81 706 1250 0.86 736
1300 1075 0.64 637 1122 0.70 696 1152 0.76 716 1190 0.82 756 1228 0.87 796 1266 0.94 836
1400 1110 0.73 726 1160 0.78 766 1181 0.83 806 1237 0.88 845 1293 0.94 885 1349 0.99 925
1500 1150 0.78 816 1190 0.84 855 1225 0.89 895 1271 0.95 945 1317 1.00 995 1383 1.05 1044
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
23
Table 10 Fan Performance 48TJ004 Vertical Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
3. Maximum continuous bhp is 2.4 and the maximum continuous
watts are 2120. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
Table 11 Fan Performance 48TJ005 Vertical Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
48TJ004 (3 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 673 0.18 179 805 0.25 249 911 0.34 338 988 0.43 428 1061 0.47 487
1000 709 0.22 219 835 0.30 298 937 0.38 378 1039 0.49 487 1086 0.55 547
1100 746 0.26 259 867 0.35 348 964 0.40 398 1068 0.55 547 1109 0.61 607
1200 785 0.32 318 903 0.41 408 994 0.50 497 1090 0.64 637 1156 0.68 676
1300 826 0.38 378 942 0.48 477 1047 0.60 597 1122 0.70 696 1190 0.76 756
1400 868 0.45 448 984 0.57 567 1067 0.67 666 1160 0.84 766 1237 0.85 845
1500 911 0.53 527 1029 0.66 656 1109 0.77 766 1190 1.00 855 1271 0.95 945
48TJ004 (3 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 1105 0.57 567 1140 0.63 622 1170 0.68 674 1198 0.73 723 1224 0.77 771
1000 1136 0.63 627 1172 0.69 688 1203 0.75 745 1232 0.80 799 1258 0.86 852
1100 1145 0.67 666 1181 0.73 731 1213 0.80 792 1242 0.85 850 1268 0.91 906
1200 1210 0.74 736 1248 0.81 808 1282 0.88 875 1312 0.94 939 1340 1.01 1000
1300 1266 0.84 836 1306 0.92 917 1341 1.00 993 1373 1.07 1066 1402 1.14 1136
1400 1349 0.93 925 1391 1.02 1015 1492 1.11 1100 1463 1.19 1180 1494 1.26 1257
1500 1383 1.05 1044 1426 1.15 1146 1465 1.25 1242 1500 1.34 1332 1532 1.43 1419
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
48TJ005 (4 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed High Speed
208 V 230, 460, 575 V 208 V 230, 460, 575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
1200 0.68 0.41 458 0.74 0.45 506 0.74 0.51 572 0.85 0.56 632
1300 0.61 0.42 471 0.67 0.46 521 0.66 0.52 589 0.78 0.58 651
1400 0.53 0.45 503 0.59 0.49 556 0.59 0.54 616 0.70 0.60 681
1500 0.45 0.47 536 0.51 0.52 593 0.52 0.56 631 0.63 0.62 698
1600 0.36 0.49 557 0.42 0.54 616 0.45 0.58 654 0.56 0.64 723
1700 0.26 0.52 584 0.32 0.57 646 0.37 0.60 678 0.48 0.66 750
1800 0.15 0.54 610 0.22 0.60 674 0.30 0.62 698 0.41 0.68 772
1900 0.04 0.56 629 0.11 0.62 696 0.23 0.64 720 0.34 0.70 796
2000 ——————0.16 0.66 744 0.26 0.73 823
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
24
Table 12 Fan Performance 48TJ005 Vertical Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 835 to 1185 rpm. All other rpms require a field-supplied
drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See Table 7
for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.0 and the maximum continuous watts are
1000. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using your
fan motors up to the wattage ratings shown will not result in nuisance
tripping or premature motor failure. Unit warranty will not be affected.
See Table 6 Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
Table 13 Fan Performance 48TJ005 Vertical Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See Table 7
for accessory/FIOP static pressure information.
3. Maximum continuous bhp is 2.4 and the maximum continuous watts are
2120. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using your
fan motors up to the wattage ratings shown will not result in nuisance
tripping or premature motor failure. Unit warranty will not be affected.
See Table 6 Motor Data for additional information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
48TJ005 (4 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.6 0.7 0.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 596 0.20 210 665 0.25 263 722 0.31 320 779 0.36 378 872 0.48 504 915 0.54 567 957 0.60 630
1300 633 0.24 252 699 0.30 315 754 0.36 378 809 0.42 441 902 0.55 578 943 0.61 641 984 0.67 704
1400 6720.30315 7350.36378 7880.42441 840 0.48 504 933 0.62 651 972 0.69 720 1011 0.75 788
1500 7110.35368 7700.42441 8220.49510 873 0.55 578 963 0.69 725 1002 0.77 804 1041 0.84 858
1600 751 0.42 441 835 0.49 515 871 0.56 588 907 0.63 662 993 0.77 787 1033 0.85 869 1072 0.93 950
1700 791 0.49 515 873 0.57 599 907 0.65 678 941 0.72 757 1024 0.87 889 1064 0.96 976 1103 1.04 1063
1800 831 0.58 609 881 0.66 693 929 0.74 772 976 0.81 851 1057 0.97 991 1095 1.06 1078 1132 1.14 1165
1900 872 0.67 704 919 0.75 788 965 0.84 877 1011 0.92 967 1091 1.08 1104 1127 1.17 1191 1162 1.25 1277
2000 913 0.77 809 958 0.86 904 1002 0.95 993 1046 1.03 1082 1125 1.21 1237 1160 1.30 1323 1195 1.38 1410
48TJ005 (4 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.9 1.0 1.1 1.2 1.4 1.6 1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 993 0.65 678 1028 0.69 725 1056 0.72 751 1083 0.74 778 1134 0.80 935 1185 0.88 965 1331 0.99 1000
1300 1021 0.74 772 1058 0.80 841 1090 0.85 888 1121 0.89 935 1171 0.94 988 1219 1.00 999 1268 1.10 1029
1400 1049 0.82 837 1086 0.89 885 1120 0.96 950 1153 1.00 976 1210 1.12 1071 1257 1.17 1105 1307 1.25 1190
1500 1077 0.92 922 1113 0.99 985 1147 1.06 1054 1180 1.13 1081 1241 1.27 1215 1295 1.37 1294 1339 1.43 1350
1600 1107 1.00 998 1141 1.09 1084 1174 1.17 1134 1207 1.25 1196 1269 1.40 1339 1326 1.54 1454 1376 1.65 1558
1700 1137 1.12 1128 1171 1.20 1194 1203 1.29 1278 1235 1.37 1310 1296 1.53 1463 1354 1.70 1605 1407 1.84 1738
1800 1167 1.23 1239 1202 1.32 1313 1233 1.41 1398 1263 1.49 1425 1323 1.67 1597 1381 1.85 1747 1436 2.02 1907
1900 1197 1.35 1360 1232 1.45 1442 1263 1.54 1532 1294 1.63 1559 1351 1.81 1731 1408 2.00 1889 1463 2.19 2068
2000 1229 1.48 1491 1262 1.58 1572 1294 1.68 1671 1325 1.78 1702 1362 1.97 1884 1436 2.16 2040 1489 2.36 2229
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
48TJ005 (4 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 665 0.25 263 779 0.36 378 872 0.48 504 957 0.60 630 1028 0.69 725
1300 699 0.30 315 809 0.42 441 902 0.55 578 984 0.67 704 1058 0.80 841
1400 735 0.36 378 840 0.48 504 933 0.62 651 1011 0.75 788 1086 0.89 885
1500 770 0.42 441 873 0.55 578 963 0.69 725 1041 0.84 858 1113 0.99 985
1600 835 0.49 515 907 0.63 662 993 0.77 787 1072 0.93 950 1141 1.09 1084
1700 873 0.57 599 941 0.72 757 1024 0.87 889 1103 1.04 1063 1171 1.20 1194
1800 881 0.66 693 976 0.81 851 1057 0.97 991 1132 1.14 1165 1202 1.32 1313
1900 919 0.75 788 1011 0.92 967 1091 1.08 1104 1162 1.25 1277 1232 1.45 1442
2000 958 0.86 904 1046 1.03 1082 1125 1.21 1237 1195 1.38 1410 1262 1.58 1572
48TJ005 (4 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 1083 0.74 778 1134 0.80 935 1185 0.88 965 1331 0.99 1000 1374 1.09 1083
1300 1121 0.89 935 1171 0.94 988 1219 1.00 999 1268 1.10 1029 1309 1.21 1203
1400 1153 1.00 967 1210 1.12 1071 1257 1.17 1105 1307 1.25 1190 1349 1.37 1367
1500 1180 1.13 1081 1241 1.27 1215 1295 1.37 1294 1339 1.43 1350 1382 1.57 1564
1600 1207 1.25 1196 1269 1.40 1339 1326 1.54 1454 1376 1.65 1558 1420 1.81 1805
1700 1235 1.37 1310 1296 1.53 1463 1354 1.70 1605 1407 1.84 1738 1452 2.02 2013
1800 1263 1.49 1425 1323 1.67 1597 1381 1.85 1747 1436 2.02 1907 1482 2.22 2210
1900 1294 1.63 1559 1351 1.81 1731 1408 2.00 1889 1463 2.19 2068 ———
2000 1325 1.78 1702 1362 1.97 1894 1436 2.16 2040 1489 2.36 2229 ———
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
25
Table 14 Fan Performance 48TJ006 Vertical Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
Table 15 Fan Performance 48TJ006 Vertical Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 900 to 1300 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.30 for single-phase units and 2.40
for 3-phase units and the maximum continuous watts are 2120.
Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ006 (5 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed Medium Speed High Speed
208 V 230,460,575 V 208 V 230,460,575 V 208 V 230,460,575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
1500 0.69 0.67 750 1.01 0.71 791 1.00 0.70 782 1.20 0.76 845 1.22 0.79 875 1.28 0.85 949
1600 0.49 0.70 780 0.85 0.74 824 0.85 0.74 821 1.06 0.79 883 1.09 0.82 913 1.17 0.89 988
1700 0.29 0.73 810 0.70 0.77 857 0.70 0.77 861 0.93 0.83 921 0.97 0.85 950 1.06 0.92 1027
1800 0.09 0.75 839 0.54 0.80 891 0.55 0.81 900 0.80 0.86 959 0.84 0.89 988 0.95 0.96 1066
1900 ——0.39 0.83 924 0.40 0.84 940 0.67 0.90 997 0.72 0.92 1025 0.84 0.99 1105
2000 ——0.23 0.86 957 0.25 0.88 979 0.54 0.93 1035 0.59 0.95 1063 0.73 1.03 1144
2100 ——0.08 0.89 990 0.10 0.91 1018 0.41 0.96 1073 0.46 0.99 1101 0.62 1.06 1183
2200 ————————0.28 1.00 1111 0.34 1.02 1138 0.51 1.10 1222
2300 ————————0.15 1.03 1149 0.21 1.06 1176 0.40 1.13 1261
2400 ————————0.02 1.07 1187 0.09 1.09 1213 0.29 1.17 1300
2500 ——————————————0.18 1.20 1340
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
48TJ006 (5 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 729 0.36 368 788 0.42 429 896 0.56 572 981 0.69 705 1070 0.85 869 1144 1.01 1032
1600 770 0.42 429 826 0.49 501 930 0.64 654 1015 0.78 797 1098 0.94 961 1173 1.11 1134
1700 811 0.50 511 864 0.57 582 964 0.72 736 1051 0.88 899 1124 1.03 1053 1203 1.21 1237
1800 852 0.58 593 903 0.66 674 999 0.82 838 1085 0.98 1001 1155 1.13 1155 1231 1.32 1349
1900 893 0.68 695 942 0.76 777 1035 0.92 940 1119 1.10 1124 1191 1.26 1288 1288 1.43 1461
2000 935 0.78 797 982 0.87 889 1070 1.04 1063 1153 1.22 1247 1227 1.40 1431 1287 1.57 1604
2100 977 0.89 910 1022 0.99 1012 1107 1.17 1196 1187 1.35 1380 1260 1.54 1574 1323 1.72 1758
2200 1019 1.02 1042 1063 1.12 1145 1144 1.30 1328 1222 1.49 1523 1294 1.70 1737 1359 1.89 1931
2300 1061 1.16 1185 1104 1.26 1288 1182 1.47 1502 1258 1.65 1686 1328 1.80 1901 1393 2.07 2115
2400 1103 1.30 1328 1145 1.41 1441 1220 1.61 1645 1293 1.80 1860 1362 2.03 2074 1426 2.26 2310
2500 1145 1.46 1492 1186 1.57 1604 1259 1.78 1819 1329 2.00 2044 1397 2.22 2269 1460 2.45 2504
48TJ006 (5 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 1226 1.19 1216 1301 1.46 1492 1380 1.69 1757
1600 1242 1.28 1308 1318 1.49 1523 1392 1.78 1800
1700 1270 1.39 1420 1335 1.58 1615 1408 1.80 1850
1800 1300 1.52 1553 1361 1.71 1747 1423 1.91 1952
1900 1329 1.64 1676 1391 1.80 1891 1448 2.05 2095
2000 1355 1.77 1809 1420 1.99 2034 1477 2.21 2258
2100 1381 1.91 1952 1449 2.14 2167 ——
2200 1413 2.08 2126 1474 2.30 2350 ——
2300 1449 2.26 2310 —————
2400 1485 2.47 2524 —————
2500 ————————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
26
Table 16 Fan Performance 48TJ006 Vertical Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ006 (5 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 808 0.42 429 914 0.56 572 1001 0.69 705 1084 0.85 869 1168 1.01 1032
1600 846 0.49 501 950 0.64 645 1034 0.78 797 1111 0.94 961 1194 1.11 1134
1700 884 0.57 592 983 0.72 736 1068 0.88 899 1145 1.03 1053 1218 1.21 1237
1800 942 0.66 674 1018 0.82 838 1105 0.98 1001 1179 1.13 1155 1246 1.32 1349
1900 965 0.78 777 1057 0.92 940 1143 1.10 1124 1212 1.26 1288 1280 1.43 1481
2000 1008 0.87 889 1096 1.04 1063 1177 1.22 1247 1247 1.40 1431 1300 1.57 1604
2100 1051 0.99 1012 1136 1.17 1196 1210 1.35 1380 1284 1.54 1574 1347 1.72 1758
2200 1095 1.12 1145 1173 1.30 1328 1245 1.49 1523 1322 1.70 1737 1380 1.89 1931
2300 1140 1.28 1288 1210 1.47 1502 1284 1.65 1686 1356 1.80 1901 1418 2.07 2115
2400 1185 1.41 1441 1249 1.61 1645 1323 1.80 1860 1389 2.03 2074 1456 2.26 2310
2500 1231 1.57 1604 1289 1.78 1819 1363 2.00 2044 1424 2.22 2269 1500 2.45 2504
48TJ006 (5 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 1199 1.19 1216 1126 1.46 1492 1250 1.69 1757 1301 1.91 1944 1349 2.12 2164
1600 1263 1.28 1308 1275 1.49 1523 1299 1.78 1800 1352 2.01 2047 1401 2.23 2280
1700 1295 1.39 1420 1351 1.58 1615 1352 1.80 1850 1407 2.03 2070 1459 2.26 2305
1800 1319 1.52 1553 1389 1.71 1747 1453 1.91 1952 1494 2.15 2197 1548 2.40 2446
1900 1343 1.64 1676 1415 1.80 1891 1478 2.05 1095 1538 2.31 2358 1594 2.57 2625
2000 1374 1.77 1809 1438 1.99 2034 1505 2.21 2258 1566 2.49 2542 1624 2.77 2830
2100 1409 1.91 1952 1465 2.14 2167 1533 2.45 2501 1596 2.77 2821 1654 3.08 3141
2200 1442 2.08 2126 1498 2.30 2350 1568 2.64 2688 1632 2.97 3031 1691 3.31 3375
2300 1475 2.26 2310 1554 2.64 2698 1627 3.03 3091 1693 3.42 3486 1755 3.81 3881
2400 1565 2.47 2524 1649 2.89 2948 1726 3.31 3379 ——————
2500 1596 2.95 3010 1682 3.45 3522 1760 3.96 4036 ——————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
27
Table 17 Fan Performance 48TJ007 Vertical Discharge Units, Standard Motor
LEGEND
*Motor drive range is 1070 to 1460 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.40 and the maximum continuous
watts are 2120. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ007 (6 TONS) STANDARD MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 942 0.70 646 978 0.66 700 1063 0.82 771 1147 0.97 891 1248 1.20 1081 1322 1.33 1190
1900 982 0.80 739 1023 0.78 779 1097 0.91 843 1175 1.11 1006 1266 1.29 1156 1356 1.47 1310
2000 1022 0.91 835 1068 0.90 867 1132 1.01 924 1218 1.23 1106 1303 1.41 1258 1397 1.52 1353
2100 1063 0.99 916 1115 1.00 998 1180 1.17 1056 1261 1.35 1207 1340 1.53 1361 1428 1.66 1473
2200 1104 1.13 1039 1159 1.15 1081 1214 1.28 1148 1310 1.52 1353 1375 1.63 1447 1459 1.80 1595
2300 1130 1.26 1156 1202 1.29 1140 1248 1.38 1233 1358 1.69 1499 1410 1.72 1526 1488 1.93 1709
2400 1174 1.37 1258 1237 1.41 1224 1292 1.55 1378 1392 1.81 1604 1460 1.90 1683 1532 2.14 1892
2500 1201 1.48 1361 1272 1.53 1335 1335 1.71 1517 1427 1.94 1718 1518 2.16 1910 1575 2.35 2076
2600 1246 1.62 1491 1320 1.68 1482 1368 1.81 1604 1458 2.06 1823 1562 2.42 2136 1620 2.59 2283
2700 1285 1.75 1613 1361 1.82 1595 1400 1.91 1691 1490 2.19 1936 1602 2.64 2326 1666 2.85 2504
2800 1304 1.87 1726 1402 1.95 1639 1439 2.08 1840 1543 2.43 2145 1642 2.86 2512 ——-
2900 1345 2.07 1910 1446 2.16 1814 1477 2.16 1989 1585 2.65 2335 ——————
3000 1378 2.26 2084 1489 2.36 2032 1529 2.52 2223 1598 2.73 2444 ——————
48TJ007 (6 TONS) STANDARD MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in.wg)
1.2 1.4 1.6
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 1395 1.46 1301 1475 1.56 1387 1542 1.71 1517
1900 1430 1.58 1404 1504 1.69 1499 1556 1.82 1613
2000 1459 1.67 1482 1532 1.82 1613 1588 1.97 1744
2100 1489 1.80 1595 1567 1.99 1761 1626 2.16 1910
2200 1528 1.95 1726 1603 2.17 1919 1666 2.37 2093
2300 1561 2.13 1884 1637 2.35 2076 1710 2.54 2272
2400 1584 2.28 2015 1671 2.55 2249 1756 2.70 2467
2500 1633 2.53 2232 1698 2.72 2405 ———
2600 1675 2.77 2436 ——————
2700 —————————
2800 —————————
2900 —————————
3000 —————————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
28
Table 18 Fan Performance 48TJ007 Vertical Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ007 (6 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 978 0.66 700 1063 0.82 771 1147 0.97 891 1248 1.20 1081 1322 1.33 1190
1900 1023 0.78 779 1097 0.91 843 1175 1.11 1006 1266 1.29 1156 1356 1.47 1310
2000 1068 0.90 867 1132 1.01 924 1218 1.23 1106 1303 1.41 1258 1397 1.52 1353
2100 1115 1.00 988 1180 1.17 1056 1261 1.35 1207 1340 1.53 1361 1428 1.66 1473
2200 1159 1.15 1081 1214 1.28 1148 1310 1.52 1353 1375 1.63 1447 1459 1.80 1595
2300 1202 1.29 1140 1248 1.38 1233 1358 1.69 1499 1410 1.72 1526 1488 1.93 1709
2400 1237 1.41 1224 1292 1.55 1378 1392 1.81 1604 1460 1.90 1683 1532 2.14 1892
2500 1272 1.53 1335 1335 1.71 1517 1427 1.94 1718 1518 2.16 1910 1575 2.35 2076
2600 1320 1.68 1482 1368 1.81 1604 1458 2.06 1823 1562 2.42 2136 1620 2.59 2283
2700 1361 1.82 1595 1400 1.91 1691 1490 2.19 1936 1602 2.64 2326 1666 2.85 2504
2800 1402 1.95 1639 1439 2.08 1840 1543 2.43 2145 1642 2.86 2512 1775 3.62 3290
2900 1446 2.16 1814 1477 2.16 1989 1585 2.65 2335 1753 3.58 3262 ———
3000 1489 2.36 2032 1529 2.52 2223 1598 2.73 2444 1767 3.69 3360 ———
48TJ007 (6 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 1395 1.46 1301 1475 1.56 1387 1542 1.71 1517 1607 1.94 1761 1667 2.16 1967
1900 1430 1.58 1404 1504 1.69 1499 1556 1.82 1613 1621 2.06 1874 1682 2.30 2093
2000 1459 1.67 1482 1532 1.82 1613 1588 1.97 1744 1655 2.23 2029 1717 2.49 2266
2100 1489 1.80 1595 1567 1.99 1761 1626 2.16 1910 1694 2.44 2224 1758 2.73 2485
2200 1528 1.95 1726 1603 2.17 1919 1666 2.37 2093 1736 2.68 2441 ———
2300 1561 2.13 1884 1637 2.35 2076 1710 2.54 2272 1782 2.87 2616 ———
2400 1584 2.28 2015 1671 2.55 2249 1756 2.70 2467 ——————
2500 1633 2.53 2232 1698 2.72 2405 1779 3.13 2848 ——————
2600 1675 2.77 2436 1768 3.26 2964 —————————
2700 1776 3.45 3141 ————————————
2800 ———————————————
2900 ———————————————
3000 ———————————————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
29
Table 19 Fan Performance 48TJ004 Horizontal Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
Table 20 Fan Performance 48TJ004 Horizontal Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 760 to 1000 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
3. Maximum continuous bhp is 1.00 and maximum continuous watts
are 1000. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confi-
dence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected. See Table 6 Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
48TJ004 (3 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed High Speed
208 V 230, 460, 575 V 208 V 230, 460, 575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
900 0.54 0.21 253 0.57 0.23 277 0.55 0.26 307 0.60 0.31 363
1000 0.49 0.23 270 0.51 0.25 292 0.52 0.27 321 0.53 0.32 374
1100 0.43 0.24 287 0.45 0.26 307 0.46 0.28 335 0.49 0.33 385
1200 0.39 0.26 304 0.40 0.27 323 0.38 0.29 349 0.43 0.34 397
1300 0.33 0.27 321 0.35 0.29 338 0.35 0.31 364 0.36 0.34 408
1400 0.26 0.29 338 0.28 0.30 354 0.29 0.32 378 ———
1500 0.21 0.30 355 0.23 0.31 369 0.24 0.33 392 ———
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
48TJ004 (3 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.5 0.6
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 526 0.06 70 584 0.08 99 656 0.12 139 734 0.22 219 8180.25269 8750.27269
1000 570 0.09 109 627 0.13 149 738 0.19 189 8000.26259 8480.29288 8950.31308
1100 614 0.13 149 670 0.16 189 758 0.23 229 8120.29288 8630.32308 9140.35348
1200 658 0.16 189 710 0.23 229 7800.28279 8400.32318 8890.36358 9380.40398
1300 703 0.20 239 752 0.27 269 8080.32318 8680.37368 9160.41408 9630.45448
1400 725 0.29 288 7760.31308 8450.38378 8910.42418 9370.47467 9830.51507
1500 755 0.33 328 816 0.38 378 870 0.43 428 924 0.48 477 969 0.53 527 1014 0.58 577
48TJ004 (3 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.7 0.8 0.9 1.0 1.1 1.2
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 924 0.32 308 953 0.35 348 989 0.38 388 1028 0.42 438 1074 0.45 487 1120 0.50 537
1000 936 0.35 348 977 0.39 388 1020 0.44 438 1064 0.48 477 1124 0.52 537 1185 0.55 597
1100 960 0.39 388 1005 0.43 428 1052 0.49 487 1100 0.52 527 1163 0.56 587 1225 0.60 647
1200 988 0.45 448 1038 0.50 497 1076 0.53 527 1136 0.59 577 1201 0.61 647 1266 0.64 716
1300 1012 0.51 507 1061 0.56 557 1094 0.61 607 1172 0.65 647 1239 0.69 716 1306 0.72 786
1400 1027 0.56 557 1071 0.60 597 1108 0.67 666 1208 0.70 706 1278 0.75 786 1347 0.79 865
1500 1056 0.63 627 1097 0.68 676 1117 0.70 696 1245 0.74 776 1315 0.80 865 1385 0.85 955
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
30
Table 21 Fan Performance 48TJ004 Horizontal Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
3. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confi-
dence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected. See Table 6 Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
48TJ004 (3 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 584 0.08 99 734 0.22 219 875 0.27 269 953 0.36 348 1028 0.42 438
1000 627 0.13 149 800 0.26 259 895 0.31 308 977 0.39 388 1064 0.48 477
1100 670 0.16 189 812 0.29 288 914 0.35 348 1005 0.43 428 1000 0.52 527
1200 710 0.23 229 840 0.32 318 938 0.40 398 1038 0.50 497 1136 0.59 577
1300 752 0.27 269 868 0.37 368 963 0.45 448 1061 0.56 557 1172 0.65 647
1400 776 0.31 308 891 0.42 418 983 0.51 507 1071 0.60 597 1208 0.70 706
1500 816 0.38 378 924 0.48 477 1014 0.58 577 1097 0.68 676 1245 0.74 776
48TJ004 (3 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
900 1120 0.54 537 1155 0.59 589 1186 0.64 639 1215 0.69 685 1240 0.73 730
1000 1185 0.60 597 1222 0.66 655 1255 0.71 709 1285 0.77 761 1312 0.82 811
1100 1225 0.65 647 1263 0.71 709 1298 0.77 769 1328 0.83 825 1357 0.88 879
1200 1266 0.72 716 1306 0.79 786 1341 0.86 851 1373 0.92 914 1402 0.98 973
1300 1306 0.79 786 1347 0.87 862 1383 0.94 934 1416 1.01 1003 1446 1.07 1068
1400 1347 0.87 865 1389 0.95 950 1427 1.03 1029 1461 1.11 1104 1492 1.18 1176
1500 1385 0.96 955 1428 1.05 1048 1467 1.14 1135 1502 1.22 1218 1534 1.30 1298
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
31
Table 22 Fan Performance 48TJ005 Horizontal Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
Table 23 Fan Performance 48TJ005 Horizontal Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 835 to 1185 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.00 and the maximum continuous
watts are 1000. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ005 (4 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed High Speed
208 V 230, 460, 575 V 208 V 230, 460, 575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
1200 0.75 0.41 458 0.81 0.45 506 0.87 0.51 572 0.92 0.56 632
1300 0.68 0.42 471 0.74 0.46 521 0.79 0.52 589 0.85 0.58 651
1400 0.60 0.45 503 0.66 0.49 556 0.71 0.54 616 0.77 0.60 681
1500 0.51 0.47 536 0.58 0.52 593 0.64 0.56 631 0.70 0.62 698
1600 0.42 0.49 557 0.49 0.54 616 0.56 0.58 654 0.63 0.64 723
1700 0.32 0.52 584 0.39 0.57 646 0.48 0.60 678 0.55 0.66 750
1800 0.21 0.54 610 0.29 0.60 674 0.41 0.62 698 0.48 0.68 772
1900 0.09 0.56 629 0.18 0.62 696 0.33 0.64 720 0.41 0.70 796
2000 ———0.06 0.65 731 0.26 0.66 744 0.33 0.73 823
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
48TJ005 (4 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.3 0.4 0.6 0.7 0.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 569 0.18 189 641 0.23 242 701 0.29 299 761 0.34 357 859 0.46 483 901 0.52 546 943 0.58 609
1300 604 0.22 231 673 0.28 294 731 0.34 352 788 0.39 410 887 0.52 546 928 0.59 615 968 0.65 683
1400 640 0.27 284 705 0.33 347 761 0.39 410 817 0.45 473 914 0.59 620 955 0.66 688 996 0.72 757
1500 676 0.32 336 738 0.38 399 793 0.45 468 847 0.51 536 940 0.65 683 982 0.73 767 1024 0.81 851
1600 713 0.38 399 772 0.44 462 825 0.51 536 877 0.58 609 967 0.73 767 1009 0.81 851 1051 0.89 935
1700 750 0.45 473 806 0.51 536 857 0.59 615 908 0.66 693 997 0.81 851 1037 0.90 940 1077 1.01 1030
1800 788 0.52 546 841 0.59 620 890 0.67 704 939 0.75 788 1026 0.91 956 1065 1.01 1040 1104 1.07 1124
1900 826 0.60 630 876 0.68 714 924 0.76 799 971 0.84 883 1056 1.01 1061 1094 1.10 1151 1132 1.18 1240
2000 864 0.70 735 912 0.77 809 958 0.86 898 1004 0.94 988 1087 1.12 1177 1125 1.21 1271 1162 1.30 1366
48TJ005 (4 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.9 1.0 1.1 1.2 1.4 1.6 1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 987 0.64 652 1030 0.70 695 1068 0.79 792 1106 0.87 889 1134 0.98 998 1189 1.12 1138 1245 1.21 1358
1300 1006 0.71 709 1044 0.77 736 1086 0.84 833 1128 0.91 930 1183 1.10 1052 1226 1.23 1215 1297 1.35 1406
1400 1033 0.79 797 1069 0.86 838 1104 0.93 925 1139 1.01 1012 1218 1.14 1090 1286 1.34 1282 1320 1.48 1463
1500 1060 0.88 891 1095 0.95 930 1129 1.02 1022 1162 1.09 1114 1228 1.24 1186 1303 1.40 1339 1343 1.60 1530
1600 1087 1.01 1001 1123 1.05 1073 1156 1.13 1150 1185 1.20 1226 1250 1.35 1291 1319 1.51 1444 1382 1.68 1607
1700 1114 1.07 1108 1151 1.15 1185 1183 1.23 1262 1215 1.31 1339 1276 1.48 1415 1334 1.64 1569 1398 1.80 1722
1800 1141 1.17 1221 1178 1.26 1318 1211 1.35 1390 1243 1.43 1461 1303 1.61 1540 1359 1.78 1702 1418 1.95 1865
1900 1168 1.28 1371 1204 1.37 1502 1238 1.47 1548 1271 1.56 1594 1330 1.74 1664 1386 1.93 1846 1439 2.11 2018
2000 1197 1.39 1485 1231 1.48 1604 1265 1.59 1666 1298 1.69 1727 1358 1.89 1808 1413 2.08 1989 1466 2.27 2171
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
32
Table 24 Fan Performance 48TJ005 Horizontal Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
3. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confi-
dence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected. See Table 6 Motor Data for additional
information.
4. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
5. Interpolation is permissible. Do not extrapolate.
Table 25 Fan Performance 48TJ006 Horizontal Discharge Units, Standard Motor
LEGEND
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for Additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
48TJ005 (4 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 641 0.23 242 761 0.34 357 859 0.46 483 943 0.58 609 1030 0.70 695
1300 673 0.28 294 788 0.39 410 887 0.52 546 968 0.65 683 1044 0.77 736
1400 705 0.33 347 817 0.45 473 914 0.59 620 996 0.72 757 1069 0.86 838
1500 738 0.38 399 847 0.51 536 940 0.65 683 1024 0.81 851 1095 0.95 930
1600 772 0.44 462 877 0.58 609 967 0.73 767 1051 0.89 935 1123 1.05 1073
1700 806 0.51 536 908 0.66 693 997 0.81 851 1077 1.01 1030 1151 1.15 1185
1800 841 0.59 620 939 0.75 789 1026 0.91 956 1104 1.07 1124 1178 1.26 1318
1900 876 0.68 714 971 0.84 883 1056 1.01 1061 1132 1.18 1240 1204 1.37 1502
2000 912 0.77 809 1004 0.94 988 1087 1.12 1177 1162 1.30 1366 1231 1.48 1604
48TJ005 (4 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 1106 0.87 889 1134 0.98 998 1189 1.12 1138 1245 1.21 1358 1292 1.35 1345
1300 1128 0.91 930 1183 1.10 1052 1226 1.23 1215 1297 1.35 1406 1346 1.51 1500
1400 1139 1.01 1012 1218 1.14 1090 1286 1.34 1282 1320 1.48 1463 1370 1.65 1645
1500 1162 1.09 1114 1228 1.24 1186 1303 1.40 1339 1343 1.60 1530 1393 1.79 1778
1600 1185 1.20 1226 1250 1.35 1291 1319 1.51 1444 1382 1.68 1607 1434 1.88 1867
1700 1215 1.31 1339 1276 1.48 1415 1334 1.64 1569 1389 1.80 1722 1451 2.01 2001
1800 1243 1.43 1461 1303 1.61 1540 1359 1.78 1702 1418 1.95 1865 1471 2.18 2167
1900 1271 1.56 1594 1330 1.74 1664 1386 1.93 1846 1439 2.11 2018 1493 2.36 2345
2000 1298 1.69 1727 1358 1.89 1808 1413 2.08 1989 1468 2.27 2171 ———
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
48TJ006 (5 TONS) STANDARD MOTOR (DIRECT DRIVE)
Airflow
(Cfm)
Low Speed Medium Speed High Speed
208V 230, 460, 575 V 208 V 230, 460, 575 V 208 V 230, 460, 575 V
Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts Esp Bhp Watts
1500 0.74 0.67 750 1.06 0.71 791 1.07 0.70 782 1.27 0.76 845 1.26 0.79 875 1.33 0.85 949
1600 0.54 0.70 780 0.90 0.74 824 0.92 0.74 821 1.13 0.79 883 1.14 0.82 913 1.22 0.89 988
1700 0.34 0.73 810 0.75 0.77 857 0.77 0.77 861 1.00 0.83 921 1.01 0.85 950 1.11 0.92 1027
1800 0.14 0.75 839 0.59 0.80 891 0.62 0.81 900 0.87 0.86 959 0.89 0.88 988 1.00 0.96 1066
1900 ———0.44 0.83 924 0.47 0.84 940 0.74 0.90 997 0.77 0.92 1025 0.89 0.99 1105
2000 ———0.28 0.86 957 0.32 0.88 979 0.61 0.93 1035 0.64 0.95 1063 0.78 1.03 1144
2100 ———0.13 0.89 990 0.17 0.91 1018 0.48 0.96 1073 0.51 0.99 1101 0.67 1.06 1183
2200 ——————0.02 0.95 1058 0.35 1.00 1111 0.39 1.02 1138 0.56 1.10 1222
2300 —————————0.22 1.03 1149 0.26 1.06 1176 0.45 1.13 1261
2400 —————————0.09 1.07 1187 0.14 1.09 1213 0.34 1.17 1300
2500 ———————————————0.23 1.20 1340
Bhp Brake Horsepower Input to Fan
Esp External Static Pressure (in. wg)
FIOP Factory-Installed Option
33
Table 26 Fan Performance 48TJ006 Horizontal Discharge Units, Alternate Motor
LEGEND
*Motor drive range is 900 to 1300 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 1.30 for single-phase units and 2.40
for 3-phase units and the maximum continuous watts are 2120.
Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using
your fan motors up to the wattage ratings shown will not result in
nuisance tripping or premature motor failure. Unit warranty will not
be affected. See Table 6 Motor Data for additional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ006 (5 TONS) ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 730 0.34 357 789 0.40 420 896 0.53 557 990 0.67 704 1072 0.83 872 1153 1.00 1051
1600 770 0.40 420 826 0.46 483 931 0.61 641 1020 0.75 788 1101 0.91 956 1178 1.09 1145
1700 811 0.47 494 865 0.54 567 966 0.69 725 1051 0.84 883 1133 1.01 1061 1205 1.18 1240
1800 852 0.55 578 905 0.62 651 1002 0.78 820 1084 0.93 977 1163 1.10 1156 1235 1.29 1355
1900 894 0.54 567 945 0.72 757 1037 0.88 925 1119 1.04 1093 1194 1.21 1271 1266 1.40 1471
2000 936 0.74 778 984 0.82 862 1072 0.98 1030 1154 1.16 1219 1226 1.33 1397 1297 1.53 1608
2100 978 0.85 893 1024 0.93 977 1108 1.10 1156 1192 1.29 1355 1259 1.47 1545 1327 1.66 1744
2200 1021 0.97 1019 1064 1.05 1103 1145 1.22 1282 1225 1.43 1503 1294 1.62 1702 1359 1.80 1902
2300 1064 1.10 1156 1104 1.18 1240 1183 1.36 1429 1260 1.57 1650 1330 1.78 1870 1392 1.97 2070
2400 1107 1.24 1303 1145 1.32 1387 1222 1.45 1524 1296 1.73 1818 1365 1.94 2038 1426 2.15 2259
2500 1150 1.39 1460 1186 1.48 1555 1262 1.68 1765 1331 1.89 1986 1400 2.12 2227 1461 2.34 2459
48TJ006 (5 TONS) ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 1221 1.17 1229 1256 1.30 1366 1283 1.32 1387 1303 1.22 1282
1600 1252 1.27 1334 1311 1.45 1524 1340 1.58 1660 1330 1.61 1692
1700 1278 1.37 1439 1345 1.57 1650 1397 1.76 1849 1424 1.89 1986
1800 1303 1.48 1555 1371 1.69 1776 1433 1.90 1996 1480 2.09 2196
1900 1330 1.59 1671 1396 1.80 1902 1460 2.03 2133 1517 2.25 2364
2000 1362 1.73 1818 1422 1.94 2038 1485 2.16 2270 1544 2.40 2522
2100 1393 1.87 1965 1452 2.08 2185 1510 2.31 2427 1570 2.55 2674
2200 1423 2.02 2122 1483 2.24 2354 1538 2.46 2585 1594 2.71 2821
2300 1454 2.18 2291 1515 2.41 2532 1571 2.64 2758 1623 2.88 2976
2400 1485 2.36 2480 1544 2.59 2721 1604 2.84 2947 1657 3.07 3152
2500 1518 2.55 2679 1574 2.78 2905 1633 3.03 3134 1692 3.28 3345
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
34
Table 27 Fan Performance 48TJ006 Horizontal Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ006 (5 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0 1.2
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 789 0.40 420 896 0.53 557 990 0.67 704 1072 0.83 872 1153 1.00 1051 1221 1.17 1229
1600 826 0.46 483 931 0.61 641 1020 0.75 788 1101 0.91 956 1178 1.09 1145 1252 1.27 1334
1700 865 0.54 567 966 0.69 725 1051 0.84 883 1133 1.01 1061 1205 1.18 1240 1278 1.37 1439
1800 905 0.62 661 1002 0.78 820 1084 0.93 977 1163 1.10 1156 1235 1.29 1355 1303 1.48 1555
1900 945 0.72 757 1037 0.88 925 1119 1.04 1093 1194 1.21 1271 1266 1.40 1471 1330 1.59 1671
2000 984 0.82 862 1072 0.98 1030 1154 1.16 1219 1226 1.33 1397 1297 1.53 1608 1362 1.73 1818
2100 1024 0.93 977 1108 1.10 1156 1192 1.29 1355 1259 1.47 1545 1327 1.66 1744 1393 1.87 1965
2200 1064 1.05 1103 1145 1.22 1282 1225 1.43 1503 1294 1.62 1702 1359 1.80 1902 1423 2.02 2122
2300 1104 1.18 1240 1183 1.36 1429 1260 1.57 1650 1330 1.78 1870 1392 1.97 2070 1454 2.18 2291
2400 1145 1.32 1387 1222 1.45 1524 1296 1.73 1818 1365 1.94 2038 1426 2.15 2259 1485 2.36 2480
2500 1186 1.48 1555 1262 1.68 1765 1331 1.89 1986 1400 2.12 2227 1461 2.34 2459 1518 2.55 2679
48TJ006 (5 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1500 1256 1.30 1366 1283 1.32 1387 1303 1.22 1282 1345 1.34 1390
1600 1311 1.45 1524 1340 1.58 1660 1330 1.61 1692 1373 1.77 1834
1700 1345 1.57 1650 1397 1.76 1849 1424 1.89 1986 1470 2.08 2153
1800 1371 1.69 1776 1433 1.90 1996 1480 2.09 2196 1528 2.30 2381
1900 1396 1.80 1902 1460 2.03 2133 1517 2.25 2364 1566 2.47 2563
2000 1422 1.94 2038 1485 2.16 2270 1544 2.40 2522 1594 2.64 2734
2100 1452 2.08 2185 1510 2.31 2427 1570 2.55 2674 1620 2.80 2905
2200 1483 2.24 2354 1538 2.46 2585 1594 2.71 2821 1645 2.98 3087
2300 1515 2.41 2532 1571 2.64 2758 1623 2.88 2976 1675 3.17 3280
2400 1544 2.59 2721 1604 2.84 2947 1657 3.07 3152 1710 3.38 3497
2500 1574 2.78 2905 1633 3.03 3134 1692 3.28 3345 1746 3.61 3736
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
35
Table 28 Fan Performance 48TJ007 Horizontal Discharge Units, Standard Motor
LEGEND
*Motor drive range is 1070 to 1460 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.4 and maximum continuous watts
are 2120. Extensive motor and electrical testing on these units
ensures that the full range of the motor can be utilized with confi-
dence. Using your fan motors up to the wattage ratings shown will
not result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected. See Table 6 Motor Data for additional
information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ007 (6 TONS) STANDARD MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.1 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 885 0.63 623 942 0.73 700 1047 0.90 835 1139 1.05 956 1193 1.14 1031 1276 1.30 1165
1900 928 0.73 700 982 0.83 779 1084 1.02 932 1160 1.11 1006 1223 1.24 1114 1301 1.38 1233
2000 971 0.84 787 1022 0.94 867 1121 1.12 1014 1188 1.22 1097 1254 1.36 1216 1329 1.44 1284
2100 1015 0.97 891 1063 1.10 998 1140 1.18 1064 1196 1.27 1140 1272 1.45 1292 1354 1.58 1404
2200 1060 1.10 998 1104 1.20 1081 1159 1.23 1106 1229 1.41 1258 1306 1.53 1361 1363 1.70 1508
2300 1104 1.25 1123 1130 1.27 1140 1196 1.37 1224 1264 1.56 1387 1340 1.66 1473 1397 1.86 1648
2400 1138 1.30 1165 1174 1.37 1224 1245 1.57 1396 1305 1.63 1447 1373 1.84 1630 1440 1.95 1726
2500 1183 1.43 1275 1201 1.50 1335 1284 1.65 1465 1338 1.75 1552 1402 1.99 1761 1469 2.04 1805
2600 1210 1.58 1404 1246 1.67 1482 1312 1.76 1560 1366 1.96 1735 1435 2.10 1858 1494 2.19 1936
2700 1254 1.76 1560 1285 1.80 1595 1354 1.95 1726 1403 2.14 1892 1474 2.21 1954 1536 2.46 2171
2800 1274 1.82 1613 1304 1.85 1639 1374 2.12 1875 1459 2.25 1989 1514 2.42 2136 1570 2.66 2343
2900 1318 1.95 1726 1345 2.05 1814 1412 2.32 2050 1496 2.54 2240 1529 2.61 2300 1603 2.87 2521
3000 1362 2.20 1945 1378 2.30 2032 1451 2.40 2119 1534 2.66 2343 1560 2.81 2470 1611 3.01 2648
48TJ007 (6 TONS) STANDARD MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 1341 1.40 1250 1413 1.55 1378 1474 1.58 1404
1900 1374 1.53 1361 1437 1.62 1439 1490 1.67 1482
2000 1396 1.66 1473 1460 1.68 1491 1509 1.77 1569
2100 1413 1.75 1552 1475 1.73 1534 1529 1.92 1700
2200 1434 1.81 1604 1487 1.85 1639 1554 2.07 1831
2300 1459 1.88 1665 1520 2.07 1831 1576 2.24 1980
2400 1502 2.06 1823 1552 2.24 1980 1604 2.42 2136
2500 1524 2.24 1980 1585 2.42 2136 1638 2.60 2292
2600 1552 2.40 2119 1616 2.63 2317 1671 2.80 2462
2700 1584 2.61 2300 1646 2.83 2487 1706 2.97 2653
2800 1624 2.85 2504 1677 2.99 2661 ———
2900 1671 3.03 2725 ——————
3000 —————————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
36
Table 29 Fan Performance 48TJ007 Horizontal Discharge Units, High-Static Motor
LEGEND
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-
supplied drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. indicates field-supplied motor and drive are required.
3. Values include losses for filters, unit casing, and wet coils. See
Table 7 for accessory/FIOP static pressure information.
4. Maximum continuous bhp is 2.9 and the maximum continuous
watts are 2562. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized with
confidence. Using your fan motors up to the wattage ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected. See Table 6 Motor Data for addi-
tional information.
5. Use of a field-supplied motor may affect wire sizing. Contact your
Carrier representative for details.
6. Interpolation is permissible. Do not extrapolate.
48TJ007 (6 TONS) HIGH-STATIC MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0 1.2
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 942 0.73 700 1047 0.90 835 1139 1.05 956 1193 1.14 1031 1276 1.30 1165 1341 1.40 1250
1900 982 0.83 779 1084 1.02 932 1160 1.11 1006 1223 1.24 1114 1301 1.38 1233 1374 1.53 1361
2000 1022 0.94 867 1121 1.12 1014 1188 1.22 1097 1254 1.36 1216 1329 1.44 1284 1396 1.66 1473
2100 1063 1.10 998 1140 1.18 1064 1196 1.27 1140 1272 1.45 1292 1354 1.58 1404 1413 1.75 1552
2200 1104 1.20 1081 1159 1.23 1106 1229 1.41 1258 1306 1.53 1361 1363 1.70 1508 1434 1.81 1604
2300 1130 1.27 1140 1196 1.37 1224 1264 1.56 1387 1340 1.66 1473 1397 1.86 1648 1459 1.88 1665
2400 1174 1.37 1224 1245 1.57 1396 1305 1.63 1447 1373 1.84 1630 1440 1.95 1726 1502 2.06 1823
2500 1201 1.50 1335 1284 1.65 1465 1338 1.75 1552 1402 1.99 1761 1469 2.04 1805 1524 2.24 1980
2600 1246 1.67 1482 1312 1.76 1560 1366 1.96 1735 1435 2.10 1858 1494 2.19 1936 1552 2.40 2119
2700 1285 1.80 1595 1354 1.95 1726 1403 2.14 1892 1474 2.21 1954 1536 2.46 2171 1584 2.61 2300
2800 1304 1.85 1639 1374 2.12 1875 1459 2.25 1989 1514 2.42 2136 1570 2.66 2343 1624 2.85 2504
2900 1345 2.05 1814 1412 2.32 2050 1496 2.54 2240 1529 2.61 2300 1603 2.87 2521 1671 3.03 2725
3000 1378 2.30 2032 1451 2.40 2119 1534 2.66 2343 1560 2.81 2470 1611 3.01 2648 1692 3.49 3140
48TJ007 (6 TONS) HIGH-STATIC MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1800 1413 1.55 1378 1474 1.58 1404 1522 1.74 1564 1566 1.89 1704
1900 1437 1.62 1439 1490 1.67 1482 1538 1.84 1653 1583 2.00 1801
2000 1460 1.68 1491 1509 1.77 1569 1558 1.95 1752 1603 2.12 1909
2100 1475 1.73 1534 1529 1.92 1700 1578 2.11 1901 1624 2.30 2070
2200 1478 1.85 1639 1554 2.07 1831 1604 2.28 2049 1651 2.48 2232
2300 1520 2.07 1831 1576 2.24 1980 1627 2.46 2218 1674 2.68 2415
2400 1552 2.24 1980 1604 2.42 2136 1656 2.66 2396 1704 2.90 2609
2500 1585 2.42 2136 1638 2.60 2292 1691 2.86 2574 1740 3.12 2804
2600 1616 2.63 2317 1671 2.80 2462 1725 3.08 2772 1775 3.35 3019
2700 1646 2.83 2487 1706 2.97 2653 1761 3.27 2941 ———
2800 1677 2.99 2661 1739 3.33 2998 1795 3.67 3299 ———
2900 1742 3.43 3090 —————————
3000 1764 3.95 3558 —————————
Bhp Brake Horsepower Input to Fan
FIOP Factory-Installed Option
Watts Input Watts to Motor
37
START-UP
Unit Preparation Make sure that unit has been in-
stalled in accordance with these installation instructions and
applicable codes.
Return-Air Filters Make sure correct filters are in-
stalled in filter tracks. See Table 1. Do not operate unit without
return-air filters.
Compressor Mounting Compressors are internally
spring mounted. Do not loosen or remove compressor hold-
down bolts.
Internal Wiring Check all electrical connections in
unit control boxes. Tighten as required. Ensure electrical wires
do not come in contact with refrigerant tubing or sharp edges.
Refrigerant Service Ports To service refrigerant
service ports, remove refrigerant service port access panel. See
Fig. 43. Each unit system has 4 Schrader-type service gage
ports: one on the suction line, one on the liquid line, and two on
the compressor discharge line. Be sure that caps on the ports
are tight. When a controls upgrade package is used, one
Schrader-type valve is located under both the high-pressure
switch and the low-pressure switch.
High Flow Valves Located on the compressor hot gas
and suction tubes are High Flow Valves. Large black plastic
caps distinguish these valves with o-rings located inside the
caps. These valves can not be accessed for service in the field.
Ensure the plastic caps are in place and tight or the possibility
of refrigerant leakage could occur.
Compressor Rotation On 3-phase units with scroll
compressors, it is important to be certain compressor is rotating
in the proper direction. To determine whether or not compres-
sor is rotating in the proper direction:
1. Connect service gages to suction and discharge pressure
fittings.
2. Energize the unit.
3. The suction pressure should drop and the discharge pres-
sure should rise, as is normal on any start-up.
If the suction pressure does not drop and the discharge pres-
sure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating in
the wrong direction.
2. Turn off power to the unit and install lockout tag.
3. Reverse any two of the unit power leads.
4. Reapply power to unit and recheck pressures.
The suction and discharge pressure levels should now move
to their normal start-up levels.
NOTE: When the compressor is rotating in the wrong direc-
tion, the unit makes an elevated level of noise and does not
provide cooling.
Cooling Set space thermostat of OFF position. To start
unit, turn on main power supply. Set system selector switch at
COOL position and fan switch at AUTO. position. Adjust ther-
mostat to a setting below room temperature. Compressor starts
on closure of contactor.
Check unit charge. Refer to Service, Refrigerant Charge
section, page 41. Allow unit to operate a minimum of 10 min-
utes before checking charge.
Reset thermostat at a position above room temperature.
Compressor will shut off. Evaporator fan will shut off after
30-second delay.
TO SHUT OFF UNIT Set system selector switch at OFF
position. Resetting thermostat at a position above room tem-
perature shuts unit off temporarily until space temperature ex-
ceeds thermostat setting.
Main Burners Main burners are factory set and should
require no adjustment.
TO CHECK ignition of main burners and heating controls,
move thermostat set point above room temperature and verify
that the burners light and evaporator fan is energized. After en-
suring that the unit continues to heat the building, lower the
thermostat setting below room temperature and verify that the
burners and evaporator fan turn off. (Fan will turn off only if
fan selector switch is in the AUTO. position and after a
45-second delay has elapsed.)
Refer to Table 30 for the correct orifice to use at high
altitudes.
Table 30 Altitude Compensation*
*As the height above sea level increases, there is less oxygen per
cubic foot of air. Therefore, heat input rate should be reduced at
higher altitudes.
Orifices available through your Carrier distributor.
ELEVATION
(ft)
74,000 AND 115,000
BTUH NOMINAL
INPUT
150,000 BTUH
NOMINAL INPUT
Natural
Gas
Orifice
Size
Liquid
Propane
Orifice
Size
Natural
Gas
Orifice
Size
Liquid
Propane
Orifice
Size
0-2,000 33 43 30 38
2,000 34 43 30 39
3,000 35 44 31 40
4,000 36 44 32 41
5,000 36 44 33 42
6,000 37 45 34 43
7,000 37 45 35 43
8,000 38 46 36 44
9,000 39 47 37 44
10,000 41 48 38 45
11,000 43 48 39 45
12,000 44 49 40 46
13,000 44 49 41 47
14,000 45 50 42 47
Fig. 43 Service Panel Location
38
Heating
1. Purge gas supply line of air by opening union ahead of
gas valve. If gas odor is detected, tighten union and wait
5 minutes before proceeding.
2. Turn on electrical supply and open manual gas valve.
3. Set system switch selector at HEAT position and fan
switch at AUTO. or ON position. Set heating temperature
lever above room temperature.
4. The induced-draft motor will start.
5. After a call for heating, the main burners should light
within 5 seconds. If the burner does not light, then there is
a 22-second delay before another 5-second try. If the
burner still does not light, the time delay is repeated. If the
burner does not light within 15 minutes, there is a lock-
out. To reset the control, break the 24 v power to W1.
ADJUST GAS INPUT The gas input to the unit is deter-
mined by measuring the gas flow at the meter or by measuring
the manifold pressure. Measuring the gas flow at the meter is
recommended for natural gas units. The manifold pressure
must be measured to determine the input of propane gas units.
Measure Gas Flow (Natural Gas Units) — Minor adjustment
to the gas flow can be made by changing the manifold pressure.
The manifold pressure must be maintained between 3.4 and
3.6 in. wg. If larger adjustments are required, change main
burner orifices following the recommendations of national and
local codes. Unit must be operating with both W1 and W2 en-
ergized (high-fire).
NOTE: All other appliances that use the same meter must be
turned off when gas flow is measured at the meter.
Proceed as follows:
1. Turn off gas supply to unit. Turn off electric supply to
unit and install lockout tag.
2. Remove pipe plug on manifold (see Fig. 44) then connect
manometer at this point. Turn on gas to unit.
3. Turn on electrical power.
4. Energize W1, and/or W2 at thermostat. Ensure gas valve,
if 2-stage style, is in “High Fire.”
Observe manifold pressure and proceed as follows to adjust
gas input:
1. Remove cover screw over regulator adjustment screw on
gas valve.
2. Turn regulator adjustment screw clockwise to increase
gas input, or turn regulator adjustment screw counter-
clockwise to decrease input. Manifold pressure must be
3.5 in. wg while in high fire.
3. Replace cover screw cap on gas valve.
4. Turn off gas supply to unit. Remove manometer from
pressure tap and replace pipe plug on gas valve. Turn on
gas to unit and check for leaks.
Measure Manifold Pressure (Propane Units) — The main
burner orifices on a propane gas unit are sized for the unit rated
input when the manifold pressure reading is 3.5 in. wg.
Ensure unit is operating in High-Fire operation mode (W1
and W2 energized) before adjusting manifold pressure.
Proceed as follows to adjust gas input on a propane gas unit:
1. Turn off gas to unit.
2. Remove pipe plug on manifold (see Fig. 44), then con-
nect manometer at this point.
3. Turn on gas to unit.
4. Remove cover screw over regulator adjustment screw on
gas valve.
5. Adjust regulator adjustment screw to the correct manifold
pressure, 3.5 in wg. Turn adjusting screw clockwise to in-
crease manifold pressure, or turn adjusting screw counter-
clockwise to decrease manifold pressure.
6. Replace cover screw.
7. Turn off gas to unit. Remove manometer from pressure
tap. Replace pipe plug on gas valve, then turn on gas to
unit. Check for gas leaks.
8. The evaporator-fan motor will turn on 45 seconds after
the burners are ignited.
9. The evaporator-fan motor will turn off 45 seconds after
thermostat temperature is satisfied.
10. Adjust airflow to obtain a temperature rise within the
range specified on the unit nameplate.
NOTE: The default value for the evaporator-fan motor ON/
OFF delay is 45 seconds. The Integrated Gas Unit Controller
(IGC) modifies this value when abnormal limit switch cycles
occur. Based upon unit operating conditions, the ON delay can
be reduced to 0 seconds and the OFF delay can be extended to
180 seconds. When one flash of the LED is observed, the
evaporator-fan ON/OFF delay has been modified.
If the limit switch trips at the start of the heating cycle dur-
ing the evaporator ON delay, the time period of the ON delay
for the next cycle will be 5 seconds less than the time at which
the switch tripped. (Example: If the limit switch trips at 30 sec-
onds, the evaporator-fan ON delay for the next cycle will occur
at 25 seconds.) To prevent short-cycling, a 5-second reduction
will only occur if a minimum of 10 minutes has elapsed since
the last call for heating.
The evaporator-fan OFF delay can also be modified. Once
the call for heating has ended, there is a 10-minute period dur-
ing which the modification can occur. If the limit switch trips
during this period, the evaporator-fan OFF delay will increase
by 15 seconds. A maximum of 9 trips can occur, extending the
evaporator-fan OFF delay to 180 seconds.
To restore the original default value, reset the power to the
unit.
TO SHUT OFF UNIT Set system selector switch at OFF
position. Resetting heating selector lever below room tempera-
ture will shut unit off until space temperature falls below ther-
mostat setting.
Unsafe operation of the unit may result if manifold pres-
sure is outside this range. Personal injury or unit damage
may result.
INDUCED-
DRAFT
MOTOR
MOUNTING
PLATE
VESTIBULE
PLATE
FLUE
EXHAUST
ROLLOUT
SWITCH
BLOWER
HOUSING
GAS
VALVE
BURNER
SECTION
MANIFOLD
PRESSURE
TRAP
(PIPE
PLUG)
INDUCED-
DRAFT
MOTOR
Fig. 44 Burner Section Details
39
Safety Relief A soft solder joint at the suction service
Schrader port provides pressure relief under abnormal tempera-
ture and pressure conditions (i.e., fire in building). Use backup
wrench when tightening flare cap.
High Flow Valves Located on the compressor hot gas
and suction tubes are High Flow Valves. Large black plastic
caps distinguish these valves with O-rings located inside the
caps. These valves cannot be accessed for service in the field.
Ensure the plastic caps are in place and tight or the possibility
of refrigerant leakage could occur.
Ventilation (Continuous Fan) Set fan and system
selector switches at ON and OFF positions, respectively.
Evaporator fan operates continuously to provide constant air
circulation. When the evaporator-fan selector switch is turned
to the OFF position, there is a 30-second delay before the fan
turns off.
Operating Sequence
COOLING, UNITS WITHOUT ECONOMIZER — When
thermostat calls for cooling, terminals G and Y1 are energized,
and the indoor (evaporator) fan motor (IFM), compressor, and
outdoor (condenser) fan motor (OFM start. The OFM runs con-
tinuously while the unit is in cooling. When the thermostat is
satisfied, compressor contactor (C) is deenergized and the com-
pressor and OFM shut off. After a 30-second delay, the IFM
shuts off. If the thermostat fan selector switch is the ON posi-
tion, the evaporator motor will run continuously.
HEATING, UNITS WITHOUT ECONOMIZER — When
the thermostat calls for heating, terminal W1 is energized. To
prevent thermostat short-cycling, the unit is locked into the
Heating mode for at least 1 minute when W1 is energized. The
induced-draft motor is energized and the burner ignition se-
quence begins. The indoor (evaporator) fan motor (IFM) is en-
ergized 45 seconds after a flame is ignited. On units equipped
for two stages of heat, when additional heat is needed, W2 is
energized and the high-fire solenoid on the main gas valve
(MGV) is energized. When the thermostat is satisfied and W1
is deenergized, the IFM stops after a 45-second time-off delay.
COOLING, UNITS WITH DURABLADE ECONO-
MIZER When the outdoor-air temperature is above the
outdoor-air thermostat (OAT) setting and the room thermostat
calls for cooling, compressor contactor is energized to start
compressor and the outdoor (condenser) fan motor (OFM).
The indoor (evaporator) fan motor (IFM) is energized and the
economizer damper moves to the minimum position. After the
thermostat is satisfied, there is a 30-second delay before the
evaporator fan turns off. The damper then moves to the fully
closed position. When using continuous fan, the damper moves
to the minimum position.
When the outdoor-air temperature is below the OAT setting
and the thermostat calls for cooling, the economizer damper
moves to the minimum position. If the supply-air temperature
is above 57 F, the damper continues to open until it reaches the
fully open position or until the supply-air temperature drops
below 52 F.
When the supply-air temperature falls to between 57 F and
52 F, the damper will remain at an intermediate open position.
If the supply-air temperature falls below 52 F, the damper will
modulate closed until it reaches the minimum position or until
the supply-air temperature is above 52 F. When the thermostat
is satisfied, the damper will move to the fully closed position
when using AUTO. fan or to the minimum position when using
a continuous fan.
If the outdoor air alone cannot satisfy the cooling require-
ments of the conditioned space, economizer cooling is integrat-
ed with mechanical cooling, providing two stages of cooling.
Compressor and the condenser fan will be energized and the
position of the economizer damper will be determined by the
supply-air temperature. When the second stage of cooling is
satisfied, the compressor and OFM will be deenergized. The
damper position will be determined by the supply-air tempera-
ture. When the first stage of cooling is satisfied, there is a
30-second delay before the evaporator fan shuts off. The damp-
er then moves to the fully closed position. When using a con-
tinuous fan, the damper moves to the minimum position.
COOLING, UNITS WITH ECONOMI$ER — When the
outdoor-air temperature (OAT) is above the ECON SP set point
and the room thermostat calls for Stage 1 cooling (R to G +
Y1), the indoor (evaporator) fan motor (IFM) is energized and
the EconoMi$er damper modulates to minimum position. The
compressor contactor is energized to start the compressor and
outdoor (condenser) fan motor (OFM). After the thermostat is
satisfied, the damper modulates to the fully closed position
when the IFM is deenergized.
When the OAT is below the ECON SP setting and the room
thermostat calls for Stage 1 cooling (R to G + Y1), the
EconoMi$er modulates to the minimum position when the
IFM is energized. The EconoMi$er provides Stage 1 of cooling
by modulating the return and outdoor air dampers to maintain a
55 F supply air set point. If the supply-air temperature (SAT) is
greater than 57 F, the EconoMi$er modulates open, allowing a
greater amount of outdoor air to enter the unit. If the SAT drops
below 53 F, the outdoor air damper modulates closed to reduce
the amount of outdoor air. When the SAT is between 53 and 57
F, the EconoMi$er maintains its position.
If outdoor air alone cannot satisfy the cooling requirements
of the conditioned space, and the OAT is above the MECH
CLG LOCKOUT set point, the EconoMi$er integrates free
cooling with mechanical cooling. This is accomplished by the
strategies below.
NOTE: Compressor has a 2-minute Minimum On, Minimum
Off, and Interstage delay timer.
1. If Y1 is energized, and the room thermostat calls for Y2
(2-stage thermostat), the compressor and OFM are ener-
gized. The EconoMi$er damper is maintained at its cur-
rent position.
2. If Y1 is energized for more than 20 minutes, and Y2 is
not energized (whether or not a 2-stage thermostat is
used), the compressor and OFM are energized. The
EconoMi$er damper is maintained at its current position.
3. If Y1 is energized, and the compressor is already ener-
gized (see Step 2) and the room thermostat calls for Y2,
the compressor continues to operate.
4. If the compressor is energized and the thermostat is satis-
fied, the compressor, the OFM, and IFM are deenergized
and the EconoMi$er modulates closed.
When the OAT is below the MECH CLG LOCKOUT set
point, the compressors remain off.
HEATING, UNITS WITH ECONOMI$ER — When the ther-
mostat calls for heating, terminal W1 is energized. To prevent
thermostat short-cycling, the unit is locked into the Heating
mode for at least 1 minute when W1 is energized. The induced-
draft motor is energized and the burner ignition sequence be-
gins. The indoor (evaporator) fan motor (IFM) is energized
45 seconds after a flame is ignited and the damper moves to the
minimum position. On units equipped for two stages of heat,
when additional heat is needed, W2 is energized and the high-
fire solenoid on the main gas valve (MGV) is energized. When
the thermostat is satisfied and W1 is deenergized, the IFM
stops after a 45-second time-off delay. The economizer damper
then moves to the fully closed position. When using continuous
fan, the damper will remain in the minimum position.
40
SERVICE
Cleaning Inspect unit interior at the beginning of heat-
ing and cooling season and as operating conditions require.
EVAPORATOR COIL
1. Turn unit power off and tag disconnect. Remove evapora-
tor coil access panel.
2. If economizer is installed, remove economizer by discon-
necting 12-pin Molex plug and removing economizer
mounting screws. Refer to accessory economizer installa-
tion instructions or Optional Economizer sections on
pages 13 and 15 for more details.
3. Slide filters out of unit.
4. Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results, back-
flush toward return-air section to remove foreign materi-
al. Flush condensate pan after completion.
5. Reinstall economizer and filters.
6. Reconnect wiring.
7. Replace access panels.
CONDENSER COIL Inspect coil monthly. Clean con-
denser coil annually, and as required by location and outdoor
air conditions.
One-Row Coil Cleaning (Size 004) — To access one-row
coils, remove screws securing condenser-fan grille to condens-
er fan top cover. Place grille on top of condenser fan top cover
as shown in Fig. 45. It is not necessary to remove the top cover.
Use a water hose or other suitable equipment to remove dirt
and debris. Clean the outer surfaces with a stiff brush in the
normal manner.
Reverse the procedure outlined above to reinstall the
condenser-fan grille and condenser fan top cover.
Two-Row Coil Cleaning (Sizes 005-007)
NOTE: Save all screws removed in this section. The screws
must be used when reinstalling the equipment.
1. To access 2-row coils, remove screws securing condenser-
fan grille to condenser coil top cover. Place grille on top of
condenser fan top cover as shown in Fig. 45 and 46. It is
not necessary to remove the top cover.
2. Remove 3 screws on right side of compressor access pan-
el. Remove one screw securing condenser coil top cover
to compressor access panel. Remove lower screws secur-
ing condenser coil to compressor mounting plate.
3. Remove 4 screws securing control box access panel. Re-
move three screws (located in front of the control box
access cover) securing condenser coil top cover.
4. Remove screws securing low-voltage access panel. Re-
move 2 screws inside low-voltage access panel. Tilt sheet
metal (located on left side of low-voltage connections)
back 45 degrees.
5. Remove screw securing refrigerant service port access
panel.
6. Remove 2 wire ties securing 2-row coils together at hair-
pin end.
7. Remove screws securing two corner posts. Remove two
corner posts.
8. Use right corner post to prop up right side of condenser
coil top cover. Slide condenser coil partially out of con-
denser fan housing. See Fig. 46.
9. Use left corner post to prop up left side of condenser coil
top cover.
10. Carefully separate the outer coil section 3 to 4 in. from the
inner coil section. See Fig. 47.
11. Use a water hose or other suitable equipment to flush
down between the 2 coil sections to remove dirt and de-
bris. Clean the outer surfaces with a stiff brush in the nor-
mal manner.
12. Secure inner and outer coils together with 2 wire ties.
13. Reposition the outer and inner coil section.
14. Reverse the procedure outlined above to reinstall
equipment.
CONDENSATE DRAIN Check and clean each year at
start of cooling season. In winter, keep drain dry or protect
against freeze-up.
FILTERS Clean or replace at start of each heating and cool-
ing season, or more often if operating conditions require it. Re-
placement filters must be same dimensions as original filters.
OUTDOOR-AIR INLET SCREENS — Clean screens with
steam or hot water and a mild detergent. Do not use disposable
filters in place of screens.
When servicing unit, shut off all electrical power to unit to
avoid shock hazard or injury from rotating parts.
Fig. 45 Coil Cleaning
Fig. 46 Propping Up Condenser Coil
Top Cover
41
Lubrication
COMPRESSORS Each compressor is charged with the
correct amount of oil at the factory.
FAN-MOTOR BEARINGS Fan-motor bearings are of
the permanently lubricated type. No further lubrication is re-
quired. No lubrication of condenser or evaporator fan motors is
required.
Manual Outdoor-Air Damper If outdoor-air damper
blade adjustment is required, see Manual Outdoor-Air Damper
section on page 12.
Economizer Adjustment Refer to Optional Econo-
mizer sections on pages 13 and 15.
Condenser Fan Adjustment (Fig. 48) Shut off
unit power supply and tag disconnect. Remove condenser-fan
assembly (grille, motor, and fan) and loosen fan hub setscrews.
Adjust fan height as shown in Fig. 48. Tighten setscrews and
replace condenser-fan assembly.
Belt/Pulley Adjustment Inspect once each season,
or if conditions warrant to verify belt tension and pulley align-
ment are correct. Replace belt if necessary.
Refrigerant Charge Amount of refrigerant charge is
listed on unit nameplate (also refer to Table 1). Refer to Carrier
GTAC2-5 Charging. Recovery, Recycling, and Reclamation
training manual and the following procedures.
Unit panels must be in place when unit is operating during
charging procedure. Unit must operate a minimum of 10 min-
utes before checking or adjusting charge.
NO CHARGE Use standard evacuating techniques. After
evacuating system, weigh in the specified amount of refriger-
ant. (Refer to Table 1.)
LOW-CHARGE COOLING Using Cooling Charging
Charts, Fig. 49-52, vary refrigerant until the conditions of the
appropriate chart are met. Note the charging charts are different
from type normally used. Charts are based on charging the
units to the correct superheat for the various operating condi-
tions. Accurate pressure gage and temperature sensing device
are required. Connect the pressure gage to the service port on
the suction line. Mount the temperature sensing device on the
suction line and insulate it so that outdoor ambient temperature
does not affect the reading. Indoor-air cfm must be within the
normal operating range of the unit.
TO USE COOLING CHARGING CHART — Take the out-
door ambient temperature and read the suction pressure gage.
Refer to chart to determine what suction temperature should
be. If suction temperature is high, add refrigerant. If suction
temperature is low, carefully recover some of the charge.
Recheck the suction pressure as charge is adjusted.
EXAMPLE: (Fig. 51)
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 F
Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 psig
Suction Temperature should be. . . . . . . . . . . . . . . . . . . . . . .68 F
(Suction Temperature may vary 5 F.)
Flue Gas Passageways To inspect the flue collec-
tor box and upper areas of the heat exchanger:
1. Remove the combustion blower wheel and motor assem-
bly according to directions in Combustion-Air Blower
section on page 43.
2. Remove the flue cover to inspect the heat exchanger.
3. Clean all surfaces as required using a wire brush.
Fig. 47 Separating Coil Sections
Fig. 48 Condenser-Fan Adjustment
42
Fig. 49 Cooling Charging Chart, 48TJ004
Fig. 50 Cooling Charging Chart, 48TJ005
Fig. 51 Cooling Charging Chart, 48TJ006
Fig. 52 Cooling Charging Chart, 48TJ007
43
Combustion-Air Blower Clean periodically to as-
sure proper airflow and heating efficiency. Inspect blower
wheel every fall and periodically during heating season. For the
first heating season, inspect blower wheel bimonthly to deter-
mine proper cleaning frequency.
To access burner section, slide the sliding burner partition
out of the unit.
To inspect blower wheel, shine a flashlight into draft hood
opening. If cleaning is required, remove motor and wheel as
follows:
1. Slide burner access panel out.
2. Remove the 7 screws that attach induced-draft motor
housing to vestibule plate (Fig. 53).
3. The blower wheel can be cleaned at this point. If addi-
tional cleaning is required, continue with Steps 4 and 5.
4. To remove blower from the motor shaft, remove
2 setscrews.
5. To remove motor, remove the 4 screws that hold the
motor to mounting plate. Remove the motor cooling fan
by removing one setscrew. Then remove nuts that hold
motor to mounting plate.
6. To reinstall, reverse the procedure outlined above.
Limit Switch Remove blower access panel (Fig. 6).
Limit switch is located on the fan deck.
Burner Ignition Unit is equipped with a direct spark
ignition 100% lockout system. Integrated Gas Unit Controller
(IGC) is located in the control box (Fig. 10). The IGC contains
a self-diagnostic LED (light-emitting diode). A single LED on
the IGC provides a visual display of operational or sequential
problems when the power supply is uninterrupted. When a
break in power occurs, the IGC will be reset (resulting in a loss
of fault history) and the indoor (evaporator) fan ON/OFF times
will be reset. The LED error code can be observed through
the viewport. During servicing refer to the label on the control
box cover or Table 31 for an explanation of LED error code
descriptions.
If lockout occurs, unit may be reset by interrupting power
supply to unit for at least 5 seconds.
Table 31 LED Error Code Description*
LEGEND
LED Light-Emitting Diode
*A 3-second pause exists between LED error code flashes. If more
than one error code exists, all applicable codes will be displayed in
numerical sequence.
Indicates a code that is not an error. The unit will continue to oper-
ate when this code is displayed.
Main Burners To access burners, remove burner ac-
cess panel and slide out burner partition. See Fig. 9. At the
beginning of each heating season, inspect for deterioration or
blockage due to corrosion or other causes. Observe the main
burner flames and adjust, if necessary.
REMOVAL AND REPLACEMENT OF GAS TRAIN
(Fig. 53-55)
1. Shut off manual gas valve.
2. Shut off power to unit.
3. Slide out burner partition. See Fig. 9.
4. Disconnect gas piping at unit gas valve.
5. Remove wires connected to gas valve. Mark each wire.
6. Remove ignitor wires and sensor wires at the Integrated
Gas Unit Controller (IGC) (see Fig. 10).
7. Remove the 2 screws that attach the burner rack to the
vestibule plate (Fig. 53).
8. Slide the burner tray out of the unit (Fig. 54).
9. To reinstall, reverse the procedure outlined above.
CLEANING AND ADJUSTMENT
1. Remove burner rack from unit as described in Removal
and Replacement of Gas Train section, above.
2. Inspect burners; if dirty, remove burners from rack.
3. Using a soft brush, clean burners and cross-over port as
required.
4. Adjust spark gap. See Fig. 55.
5. Reinstall burners on rack.
6. Reinstall burner rack as described in Removal and
Replacement of Gas Train section, this page.
Replacement Parts A complete list of replacement
parts may be obtained from any Carrier distributor upon
request.
LED INDICATION ERROR CODE DESCRIPTION
ON Normal Operation
OFF Hardware Failure
1 FlashEvaporator Fan On/Off Delay Modified
2 Flashes Limit Switch Fault
3 Flashes Flame Sense Fault
4 Flashes 4 Consecutive Limit Switch Faults
5 Flashes Ignition Lockout Fault
6 Flashes Induced-Draft Motor Fault
7 Flashes Rollout Switch Fault
8 Flashes Internal Control Fault
IMPORTANT: Refer to Troubleshooting Tables 32-36 for addi-
tional information.
When working on gas train, do not hit or plug orifice
spuds.
INDUCED-
DRAFT
MOTOR
MOUNTING
PLATE
INDUCED-
DRAFT
MOTOR
MANIFOLD
PRESSURE
TAP
VESTIBULE
PLATE
FLUE
EXHAUST
ROLLOUT
SWITCH
BLOWER
HOUSING
GAS
VALVE
BURNER
SECTION
Fig. 53 Burner Section Details
44
Fig. 54 Burner Tray Details
Fig. 55 Spark Adjustment
LOW HEAT
48TJE004, 48TJD005-007 74,000 BTUH INPUT
MEDIUM ANDHIGH HEAT
48TJE005-007, 48TJF004 115,000 BTUH INPUT
48TJF005-007 150,000 BTUH INPUT
45
TROUBLESHOOTING
Table 32 LED Error Code Service Analysis
LEGEND
Table 33 Heating Service Analysis
SYMPTOM CAUSE REMEDY
Hardware failure.
(LED OFF)
Loss of power to control module (IGC). Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and transformer. Units
without a 24-v circuit breaker have an internal overload in the 24-v transformer. If the
overload trips, allow 10 minutes for automatic reset.
Fan ON/OFF delay
modified (LED/FLASH)
High limit switch opens during heat
exchanger warm-up period before fan-
on delay expires.
Limit switch opens within three minutes
after blower-off delay timing in Heating
mode.
Ensure unit is fired on rate and temperature rise is correct.
Ensure units external static pressure is within application guidelines.
Limit switch fault.
(LED 2 flashes)
High temperature limit switch is open. Check the operation of the indoor (evaporator) fan motor.
Ensure that the supply-air temperature rise is in accordance with
the range on the unit nameplate.
Flame sense fault.
(LED 3 flashes)
The IGC sensed flame that should not
be present.
Reset unit. If problem persists, replace control board.
4 consecutive limit
switch faults.
(LED 4 flashes)
Inadequate airflow to unit. Check operation of indoor (evaporator) fan motor and that supply-air temperature rise
agrees with range on unit nameplate information.
Ignition lockout.
(LED 5 flashes)
Unit unsuccessfully attempted ignition
for 15 minutes.
Check ignitor and flame sensor electrode spacing, gaps, etc. Ensure that flame sense
and ignition wires are properly terminated. Verify that unit is obtaining proper amount
of gas.
Induced-draft motor
fault. (LED 6 flashes)
IGC does not sense that induced-draft
motor is operating.
Check for proper voltage. If motor is operating, check the speed sensor plug/IGC Ter-
minal J2 connection. Proper connection: PIN 1 White, PIN 2 Red, PIN 3 Black.
Rollout switch fault.
(LED 7 flashes)
Rollout switch has opened. Rollout switch will automatically reset, but IGC will continue to lock out unit. Check gas
valve operation. Ensure that induced-draft blower wheel is properly secured to motor
shaft. Reset unit at unit disconnect.
Internal control fault.
(LED 8 flashes)
Microprocessor has sensed an error in
the software or hardware.
If error code is not cleared by resetting unit power, replace the IGC.
If the IGC must be replaced, be sure to ground yourself to dissi-
pate any electrical charge that may be present before handling
new control board. The IGC is sensitive to static electricity and
may be damaged if the necessary precautions are not taken.
IMPORTANT: Refer to Table 33 Heating Service Analysis
for additional troubleshooting analysis.
IGC Integrated Gas Unit Controller
LED Light-Emitting Diode
PROBLEM CAUSE REMEDY
Burners will not
ignite.
Misaligned spark electrodes. Check flame ignition and sensor electrode positioning.
Adjust as needed.
No gas at main burners. Check gas line for air purge as necessary. After purging
gas line of air, allow gas to dissipate for at least 5 minutes
before attempting to relight unit.
Check gas valve.
Water in gas line. Drain water and install drip leg to trap water.
No power to furnace. Check power supply, fuses, wiring, and circuit breaker.
No 24 v power supply to control circuit. Check transformer. Transformers with internal overcur-
rent protection require a cool down period before resetting.
Miswired or loose connections. Check all wiring and wirenut connections.
Burned-out heat anticipator in thermostat. Replace thermostat.
Broken thermostat wires. Run continuity check. Replace wires, if necessary.
Inadequate heating. Dirty air filter. Clean or replace filter as necessary.
Gas input to unit too low. Check gas pressure at manifold. Clock gas meter for input. If too
low, increase manifold pressure, or replace with correct orifices.
Unit undersized for application. Replace with proper unit or add additional unit.
Restricted airflow. Clean filter, replace filter, or remove any restrictions.
Blower speed too low. Use high speed tap, increase fan speed, or install
optional blower, as suitable for individual units.
Limit switch cycles main burners. Check rotation of blower, thermostat heat anticipator settings,
and temperature rise of unit. Adjust as needed.
Too much outdoor air. Adjust minimum position.
Check economizer operation.
Poor flame
characteristics.
Incomplete combustion (lack of Check all screws around flue outlets and burner
combustion air) results in: compartment. Tighten as necessary.
Aldehyde odors, CO, sooting flame, or floating flame. Cracked heat exchanger.
Overfired unit reduce input, change orifices, or adjust
gas line or manifold pressure.
Check vent for restriction. Clean as necessary.
Check orifice to burner alignment.
Burners will not Unit is locked into Heating mode for a Wait until mandatory one minute time period has
turn off. one minute minimum. elapsed or reset power to unit.
46
Table 34 Cooling Service Analysis
PROBLEM CAUSE REMEDY
Compressor and condenser fan
will not start.
Power failure. Call power company.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Defective thermostat, contactor, transformer,
or control relay.
Replace component.
Insufficient line voltage. Determine cause and correct.
Incorrect or faulty wiring. Check wiring diagram and rewire correctly.
Thermostat setting too high. Lower thermostat setting below room temperature.
Compressor will not start
but condenser fan runs.
Faulty wiring or loose connections in com-
pressor circuit.
Check wiring and repair or replace.
Compressor motor burned out, seized, or
internal overload open.
Determine cause. Replace compressor.
Defective run/start capacitor, overload, or
start relay.
Determine cause and replace.
One leg of three-phase power dead. Replace fuse or reset circuit breaker. Determine
cause.
Compressor cycles (other than
normally satisfying thermostat).
Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and
recharge to nameplate.
Defective compressor. Replace and determine cause.
Insufficient line voltage. Determine cause and correct.
Blocked condenser. Determine cause and correct.
Defective run/start capacitor, overload, or
start relay.
Determine cause and replace.
Defective thermostat. Replace thermostat.
Faulty condenser-fan motor or capacitor. Replace.
Restriction in refrigerant system. Locate restriction and remove.
Compressor operates continuously. Dirty air filter. Replace filter.
Unit undersized for load. Decrease load or increase unit size.
Thermostat set too low. Reset thermostat.
Low refrigerant charge. Locate leak; repair, and recharge.
Leaking valves in compressor. Replace compressor.
Air in system. Recover refrigerant, evacuate system, and
recharge.
Condenser coil dirty or restricted. Clean coil or remove restriction.
Excessive head pressure. Dirty air filter. Replace filter.
Dirty condenser coil. Clean coil.
Refrigerant overcharged. Remove excess refrigerant.
Air in system. Recover refrigerant, evacuate system, and
recharge.
Condenser air restricted or air short-cycling. Determine cause and correct.
Head pressure too low. Low refrigerant charge. Check for leaks; repair, and recharge.
Compressor valves leaking. Replace compressor.
Restriction in liquid tube. Remove restriction.
Excessive suction pressure. High heat load. Check for source and eliminate.
Compressor valves leaking. Replace compressor.
Refrigerant overcharged. Recover excess refrigerant.
Suction pressure too low. Dirty air filter. Replace filter.
Low refrigerant charge. Check for leaks; repair, and recharge.
Metering device or low side restricted. Remove source of restriction.
Insufficient evaporator airflow. Increase air quantity. Check filter and replace if
necessary.
Temperature too low in conditioned area. Reset thermostat.
Outdoor ambient below 25 F. Install low-ambient kit.
Evaporator fan will not shut off. Time off delay not finished. Wait for 30-second off delay.
Compressor makes excessive
noise (48TJ007 scroll only).
Compressor rotating in wrong direction. Reverse the 3-phase power leads as described in
the Start-Up section on page 37.
47
Table 35 Durablade Economizer Troubleshooting
PROBLEM CAUSE REMEDY
Damper does not
open.
Indoor (evaporator) fan is off. 1. Check to ensure that 24 vac is present at terminal C1 on the IFC or
that 24 vac is present at the IFO terminal. Check whether 24 vac is
present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is
not present, check wiring (see unit label diagram).
2. Check proper thermostat connection to G on the connection board.
No power to economizer motor. 1. Check that SW3 is properly making contact with the damper
blade. Check that SW1 is in the NC (normally closed) position.
2. Check diode D18. If diode is not functioning properly, replace control
board.
3. Confirm that the economizer control board is grounded properly at
PL6-4 (brown wire) and at brown terminal of the economizer control
board (brown wire). The economizer motor must also be grounded
properly at the negative motor terminal (brown wire).
4. Verify SW1 and SW3 are working and wired properly (see unit label
diagram).
5. Check for 24 vac input at both PL6-1 (red wire) and PL6-3 (black
wire). If 24 vac not present, check unit wiring (see unit label
diagram). If 24 vac is found in both places, check for 24 vac at the
yellow terminal of the economizer control board (yellow wire). If
24 vac power is not present, replace the economizer control board.
Economizer motor failure. If the indoor (evaporator) fan and economizer motor are energized,
verify that there is a minimum of 18 vdc at the positive motor
terminal. If the motor is not operating, replace the motor.
Economizer
operation
limited to minimum
position.
OAT or EC set too high. 1. Set at correct temperature (3 F below indoor space temperature).
2. Check OAT or EC by setting above outdoor temperature or humidity
level. If the OAT or EC switches do not close, replace OAT or EC.
Verify economizer control board is correctly
wired and works properly.
1. Perform the following tests when OAT or EC is closed, Y1 is called
for and damper is at minimum position. Confirm 24 vac on gray
terminal of the economizer control board (gray wire). If 24 vac is
not present, check wiring (see unit label diagram).
2. Verify that SW1 and SW3 are wired correctly and working properly
(see unit label diagram).
3. Check to ensure that 24 vac exists at PL6-2 (blue wire). If 24 vac is
not present, check wiring (see unit wiring label diagram).
4. Check 24 vac output at PL6-10 (white wire). If 24 vac is not
present, replace economizer control board.
Check SAT. 1. After verifying that the OAT and EC settings and the economizer
control board wiring are correct, check to ensure that the 24 vac
terminal of the SAT has 24 vac (white wire). If OAT, EC, and control
board are functioning and wired properly and no 24 vac exists,
check wiring (see unit label diagram).
2. If supply-air temperature is greater than 57 F, 24 vac should be
found at terminal T2 on the SAT (pink wire). If 24 vac is not present,
replace SAT.
Damper does not
close.
Incorrect wiring of economizer. 1. Verify that SW2 and SW4 are wired and working properly (see unit
label diagram).
2. Check diode D19. If diode is not functioning properly, replace control
board.
Verify economizer control board is functioning
properly.
1. After verifying that the wiring is correct, modulate the damper to the
minimum position. Remove the calls for G.
2. If the damper does not move, check for 24 vac at PL6-1 (red wire).
If 24 vac is not present, check wiring (see unit label diagram).
3. If damper still does not move, check for 24 vac at blue terminal of
economizer control board (blue wire). If 24 vac is not present, re-
place the economizer circuit board.
Check SAT. 1. After verifying that the wiring is correct and the economizer control
board is functioning properly, place the OAT or EC switch in the
closed position. Place a call for Y1 and open the damper to the fully
open position. Confirm that the 24 vac terminal of the SAT has
24 vac (white wire). If 24 vac is not present, check wiring (see unit
label diagram).
2. If supply-air temperature is less than 52 F, 24 vac should be found
at terminal T1 on the SAT (violet wire). If 24 vac not found, replace
SAT.
Economizer motor failure. If economizer control board and SAT are functioning properly, verify
that there is a minimum of 18 vdc at the positive motor terminal. If a
minimum if 18 vdc is present and the motor is still not operating, re-
place the motor.
Economizer damper
does not close on
power loss.
Verify that close-on-power-loss and economizer
control board are functioning properly.
1. Check voltage potential across batteries. If lower than 14 vdc,
replace close-on-power-loss power supply (9-v alkaline batteries). It
is recommended that you check this emergency power supply on a
regular basis or whenever the filters are changed.
2. If the close-on-power-loss and economizer control board are
functioning properly, check for 14 vdc or higher at the blue terminal
of the economizer control board (blue wire) when power is discon-
nected from unit. If 14 vdc is not present, replace the control board.
C1 Common Power OAT Outdoor-Air Thermostat
EC Enthalpy Control PL Plug
IFC Indoor (Evaporator) Fan Contactor SAT Supply-Air Thermostat
IFO Indoor (Evaporator) Fan On SW Economizer Position Switch
48
Table 36 EconoMi$er Troubleshooting
LEGEND
PL Plug
PROBLEM POTENTIAL CAUSE REMEDY
Damper Does Not
Open
Indoor (Evaporator) Fan is Off Check to ensure that 24 vac is present at Terminal C1 (Common Power)
on the IFC (Indoor [Evaporator] Fan Contactor) or that 24 vac is present at
the IFO (Indoor [Evaporator] Fan On) terminal. Check whether 24 vac is
present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is
not present, check wiring (see unit label diagram).
Check proper thermostat connection to G on the connection board.
No Power to EconoMi$er Controller Check to ensure that 24 vac is present across Terminals 24 VAC and
24V COM on the EconoMi$er control. If 24 vac is not present, check wiring
(see unit label diagram). If 24 vac is present, STATUS light should be on
constantly.
No Power to G Terminal If IFM is on, check to ensure 24 vac is present on G Terminal of the
EconoMi$er controller. If 24 vac is not present, check wiring (see unit
label diagram).
Controller Fault If STATUS light is flashing one flash, the EconoMi$er controller is
experiencing a fault condition. Cycle power to the controller. If condition
continues, replace the EconoMi$er controller.
Thermostat Fault If STATUS light is flashing two flashes, the EconoMi$er controller senses
the thermostat is wired incorrectly. Check wiring between the thermostat
and the connection board in the electrical panel. The fault condition is
caused by Y2 being energized before Y1.
Actuator Fault Check the wiring between the EconoMi$er controller and the actuator.
Hold CONFIG button between 3 and 10 seconds to verify the
actuators operation. (This process takes 3 minutes to complete.)
EconoMi$er
Operation Limited to
Minimum Position
Minimum Position Set Incorrectly Verify that the MIN POS (%) is set greater than zero. Adjust MIN POS (%)
to 100% to verify operation, and then set to correct setting.
EconoMi$er Changeover Set Point Set Too
High or Too Low
Set at correct value. See Table 3.
Supply Air Temperature Sensor Faulty If STATUS light is flashing 4 flashes, Supply Air Temperature Sensor is
faulty. Check wiring or replace sensor.
Outdoor Air Temperature Sensor Faulty If STATUS light is flashing 5 flashes, Outdoor Air Temperature Sensor is
faulty. Check wiring or replace sensor.
Damper Position
Less than Minimum
Position Set Point
Supply Air Low Limit Strategy Controlling The supply-air temperature is less than 45 F, causing the minimum
position to decrease. Refer to the Start-Up instructions. Verify correct
setting of MIN POS (%). If correct, EconoMi$er is operating correctly.
Damper Does Not
Return to Minimum
Position
CO2 Ventilation Strategy Controlling If a CO2 sensor is being used, and the damper position is greater than
minimum position, the ventilation control strategy is controlling. Refer to
the Start-Up instructions. EconoMi$er is operating correctly.
Damper Does Not
Close on Power Loss
Damper Travel is Restricted Check to ensure the damper is not blocked.
49
Fig. 56 Typical Wiring Diagram and Component Arrangement
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 534-774 Printed in U.S.A. Form 48TJ-18SI Pg 50 10-00 Replaces: 48TJ-16SI
Book 1 4
Ta b 1 a 6 a
Copyright 2000 Carrier Corporation
LEGEND FOR FIG. 56 TYPICAL WIRING SCHEMATIC AND COMPONENT ARRANGEMENT
IMPORTANT: Refer to unit wiring label for actual unit wiring information.
AHA Adjustable Heat Anticipator
BR Burner Relay
CContactor, Compressor
CAP Capacitor
CC Cooling Compensator
COMP Compressor Motor
CR Combustion Relay
ECON Economizer
EQUIP Equipment
FPT Freeze-Up Protection Thermostat
GND Ground
GVR Gas Valve Relay
HPS High-Pressure Switch
HS Hall-Effect Sensor
HV High Voltage
IIgnitor
IDM Induced-Draft Motor
IFM Indoor (Evaporator) Fan Motor
IGC Integrated Gas Unit Controller
LED Light-Emitting Diode
LPS Low-Pressure/Loss-of-Charge Switch
LS Limit Switch
MGV Main Gas Valve
MTR Motor
OFM Outdoor (Condenser) Fan Motor
PL Plug Assembly
QT Quadruple Terminal
RRelay
RS Rollout Switch
SAT Supply Air Thermostat
SEN Sensor
SW1 Switch Fully Open
SW2 Switch Fully Closed
SW3 Switch Min. Vent Position
SW4 Switch Max. Vent Position
TC Thermostat-Cooling
TH Thermostat-Heating
TRAN Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only.
Not to represent wiring.
NOTES:
1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.
2. Three-phase motors are protected under primary single-phasing conditions.
3. Thermostat: HH07AT170, 172, 174 and P272-2783
Subbase: HH93AZ176, 178 and P272-1882, 1883
4. Set heat anticipator at .14 amp. For units with 2 stages of heating, set stage two anticipator at .14 amp.
5. Use copper conductors only.
6. TRAN is wired for 230-v unit. If unit is to be run with 208-v power supply, disconnect BLK wire from 230-v tap
and connect to 208-v tap.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 534-774 Printed in U.S.A. Form 48TJ-18SI Pg CL-1 10-00 Replaces: 48TJ-16SI
Book 1 4
Ta b 1 a 6 a
Copyright 2000 Carrier Corporation
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
START-UP CHECKLIST
(Remove and Store in Job File)
I. PRELIMINARY INFORMATION:
MODEL NO.:________________________________ SERIAL NO.: ___________________________________
DATE:______________________________________ TECHNICIAN: __________________________________
BUILDING LOCATION:_______________________ DATE STARTED: ________________________________
II. PRE-START-UP (insert checkmark in box as each item is completed)
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
VERIFY ELECTRICAL WIRING DOES NOT CONTACT REFRIGERANT TUBING
CHECK GAS PIPING FOR LEAKS
CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE
VERIFY THAT UNIT INSTALLATION IS LEVEL
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS
CHECK BELT TENSION AND PULLEY ALIGNMENT
III. START-UP:
ELECTRICAL
TEMPERATURES AND PRESSURES
VERIFY REFRIGERANT CHARGE USING CHARGING TABLES
VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION (48TJ007 ONLY)
SUPPLY VOLTAGE L1-L2 L2-L3 L3-L1
COMPRESSOR AMPS L1 L2 L3
INDOOR-FAN AMPS L1 L2 L3
OUTDOOR-AIR TEMPERATURE DB WB
RETURN-AIR TEMPERATURE DB WB
COOLING SUPPLY AIR DB WB
GAS INLET PRESSURE IN. WG
GAS MANIFOLD PRESSURE IN. WG (HI FIRE)
GAS HEAT SUPPLY AIR DB
REFRIGERANT SUCTION PSIG F (AT SUCTION SERVICE VALVE)
REFRIGERANT DISCHARGE PSIG F (AT CONDENSER LIQUID LINE OUTLET)

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