Carrier 48TF004 007 User Manual
48TF004-007  
Single-Package Rooftop  
Heating/Cooling Units  
Installation, Start-Up, and  
Service Instructions  
CONTENTS  
Page  
Disconnect gas piping from unit when leak  
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1  
1
testing at pressure greater than  
/
psig.  
2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35  
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1  
• ROOF CURB  
1
Pressures greater than /2 psig will cause  
gas valve damage resulting in hazardous  
condition. If gas valve is subjected to pres-  
• SLAB MOUNT  
1
sure greater than  
/
2
psig, it must be  
Step 2 — Field Fabricate Ductwork. . . . . . . . . . . . . . . 2  
Step 3 — Install External Trap for Condensate  
Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 2  
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 closing  
the gas valve.  
•
POSITIONING  
Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . 4  
Step 7 — Make Electrical Connections . . . . . . . . . . . 8  
• FIELD POWER SUPPLY  
• FIELD CONTROL WIRING  
• HEAT ANTICIPATOR SETTINGS  
Before performing service or maintenance operations on  
unit, turn off main power switch to unit and install a lock-  
out tag. Electrical shock could cause personal injury.  
Step 8 — Make Outdoor-Air Adjustments  
and Install Outdoor-Air Hood. . . . . . . . . . . . . . . . . . 11  
• MANUAL OUTDOOR-AIR DAMPER  
• OPTIONAL DURABLADE ECONOMIZER  
• OPTIONAL ECONOMI$ER  
Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . 19  
• DIRECT-DRIVE MOTORS  
INSTALLATION  
Unit is shipped in the vertical duct configuration. To convert  
to horizontal configuration, remove screws from side duct  
opening covers and remove covers. Using the same screws, in-  
stall covers on vertical duct openings with the insulation-side  
down. Seals around duct openings must be tight. See Fig. 1.  
Confirm before installation of unit that voltage, amperage  
and circuit protection requirements listed on unit data plate  
agree with power supply provided.  
• BELT-DRIVE MOTORS  
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-38  
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-43  
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 44-49  
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1  
Step 1 — Provide Unit Support  
SAFETY CONSIDERATIONS  
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.  
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.  
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.  
Follow all safety codes. Wear safety glasses and work  
gloves. Use quenching cloth for unbrazing operations. Have  
fire extinguishers available for all brazing operations.  
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 result in air leaks and poor unit  
performance.  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 534-80000 Printed in U.S.A. Form 48TF-1SI Pg 1 8-00 Replaces: New  
Book 1  
4
Tab 1a 6a  
NOTES:  
7.  
Direction of airflow.  
ROOF CURB  
ACCESSORY  
1. Roof curb accessory is shipped disassembled.  
2. Insulated panels.  
A
UNIT SIZE  
8. Connector packages CRBTMPWR001A00 and 002A00 are for thru-the-  
curb connections. Packages CRBTMPWR003A00 and 004A00 are for  
thru-the-bottom connections.  
1′-2″  
3. Dimensions in [ ] are in millimeters.  
4. Roof curb, galvanized steel.  
CRRFCURB001A00  
CRRFCURB002A00  
[356]  
48TF004-007  
5. Attach ductwork to curb (flanges of duct rest on curb).  
6. Service clearance: 4 ft on each side.  
2′-0″  
[610]  
D ALT  
DRAIN  
HOLE  
“E”  
GAS  
“F”  
POWER  
“G”  
CONTROL  
CONNECTOR  
PKG. ACCY.  
B
C
3/4″ [19] NPT)  
11/4″ [31.7]  
3/4″ [19] NPT  
CRBTMPWR001A00  
CRBTMPWR002A00  
3/4″  
1/2″  
[19] NPT  
[12.7]  
1′-911  
/
″
1′-4″  
13/4″  
1/2″  
[5511]6  
[406]  
[44.5]  
CRBTMPWR003A00  
CRBTMPWR004A00  
1/2″  
[12.7] NPT  
3/4″  
[12.7]  
11/4″ [31.7]  
[19] NPT  
Fig. 2 — Roof Curb Dimensions  
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.  
MAXIMUM ALLOWABLE  
DIFFERENCE (in.)  
A-B  
B-C  
A-C  
0.5  
1.0  
1.0  
Fig. 3 — Unit Leveling Tolerances  
After unit is in position, remove rigging skids and shipping  
materials.  
Step 5 — Install Flue Hood — Flue hood is shipped  
screwed to the basepan beside the burner compartment access  
panel. Remove from shipping location and using screws pro-  
vided, install flue hood and screen in location shown in Fig. 7.  
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 con-  
nection must not be less than 4 in. wg or greater than  
13.0 in. wg while unit is operating. On 48TF005,006,007 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 op-  
erating. For propane applications, the gas pressure must not  
be less than 5 in. wg or greater than 13 in. wg at the unit  
connection.  
NOTE: Drain plug is shown in factory-installed position.  
Fig. 4 — Condensate Drain Connection  
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.  
Size gas supply piping for 0.5 in. wg maximum pressure  
drop. Do not use supply pipe smaller than unit gas connection.  
Support gas piping as shown in the table in Fig. 8. For exam-  
3
ple, a /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.  
3. Unit weights do not include economizer. See Table 1 for economizer  
weights.  
NOTES:  
1. Dimensions in ( ) are 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 center of gravity. Use  
wooden top skid when rigging to prevent rigging straps from damaging unit.  
All panels must be in place when rigging.  
MAX WEIGHT  
“A”  
“B”  
“C”  
UNIT  
Lb  
Kg  
231  
236  
245  
279  
in.  
mm  
in.  
mm  
in.  
mm  
48TFE,TFF,TFM,TFN004  
48TFD,TFE,TFF,TFL,TFM,TFN005  
48TFD,TFE,TFF,TFL,TFM,TFN006  
48TFD,TFE,TFF007  
510  
520  
540  
615  
73.69  
1872  
37.50  
953  
33.35  
845  
Fig. 5 — Rigging Details  
4
Table 1 — Physical Data — 48TF004-007  
UNIT SIZE 48TF  
E/F/M/N004  
D/E/F/L/M/N005  
D/E/F/L/M/N006  
D/E/F007  
NOMINAL CAPACITY (tons)  
3
4
5
6
OPERATING WEIGHT (lb)  
Unit  
Al/Al*  
460  
465  
468  
470  
476  
482  
490  
497  
505  
565  
576  
587  
Al/Cu*  
Cu/Cu*  
Economizer  
Durablade  
EconoMi$er  
Roof Curb†  
34  
47  
115  
34  
47  
115  
34  
47  
115  
34  
47  
115  
COMPRESSOR  
Quantity  
No. Cylinders (per Circuit)  
Oil (oz)  
Reciprocating  
Scroll  
1
2
50  
1
2
50  
1
2
50  
1
2
54  
REFRIGERANT TYPE  
Expansion Device  
Operating Charge (lb-oz)  
Circuit 1  
R-22  
Acutrol™ Metering Device  
4-4  
—
6-6  
—
6-14  
—
9-0  
—
Circuit 2  
CONDENSER COIL  
Rows...Fins/in.  
Total Face Area (sq ft)  
Enhanced Copper Tubes, Aluminum Lanced Fins  
1...17  
8.36  
2...17  
8.36  
2...17  
10.42  
2...17  
10.42  
CONDENSER FAN  
Nominal Cfm  
Quantity...Diameter (in.)  
Motor Hp...Rpm  
Watts Input (Total)  
Propeller Type  
3500  
1...22.0  
1/4...1100  
325  
4000  
1...22.0  
1/4...1100  
325  
4000  
1...22.0  
1/4...1100  
325  
4000  
1...22.0  
1/4...1100  
325  
EVAPORATOR COIL  
Rows...Fins/in.  
Total Face Area (sq ft)  
Enhanced Copper Tubes, Aluminum Double-Wavy Fins  
2...15  
4.17  
2...15  
5.5  
3...15  
5.5  
4...15  
5.5  
EVAPORATOR FAN  
Quantity...Size (in.)  
Centrifugal Type  
Std  
1...10 x 10  
1...10 x 10  
1...10 x 10  
Direct  
Belt  
1...10 x 10  
1...10 x 10  
1...10 x 10  
Direct  
Belt  
1...11 x 10  
1...10 x 10  
1...11 x 10  
Direct  
Belt  
1...10 x 10  
—
Alt  
High-Static  
Std  
1...10 x 10  
Belt  
Type Drive  
Alt  
—
Belt  
High-Static  
Belt  
Belt  
Belt  
Nominal Cfm  
Maximum Continuous Bhp  
1200  
1600  
2000  
2400  
2.40  
—
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
.34  
.75  
1.20  
1.00  
1.00  
1.30/2.40**  
2.90  
2.40  
2.40  
2.90  
56  
Motor Frame Size  
Nominal Rpm High/Low  
Fan Rpm Range  
48  
48  
48  
48  
48  
56  
—
56  
56  
56  
56  
860/800  
1620  
1075/970  
1620  
1075/970  
1725  
—
—
1725  
—
1725  
—
1725  
—
1725  
1070-1460  
—
760-1000  
1075-1455  
Ball  
835-1185  
1075-1455  
Ball  
900-1300  
1300-1685  
Ball  
1300-1685  
Ball  
Motor Bearing Type  
Maximum Allowable Rpm  
2100  
2100  
2100  
2100  
2.8/3.8  
—
Motor Pulley Pitch Diameter Min/Max (in.)  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
High-Static  
Std  
Alt  
—
—
—
1.9/2.9  
1.9/2.9  
2.4/3.4  
2.8/3.8  
2.8/3.8  
3.4/4.4  
3.4/4.4  
1
1
5
1
1
5
1
5
5
5
Nominal Motor Shaft Diameter (in.)  
Fan Pulley Pitch Diameter (in.)  
Belt, Quantity...Type...Length (in.)  
Pulley Center Line Distance (in.)  
/
/
/
/
/
/
/
/
/
/
2
2
8
2
2
8
2
8
8
8
—
5
/
—
—
—
4.85  
4.5  
4.0  
4.5  
—
4.5  
4.5  
4.5  
4.5  
—
—
—
1...A...40  
1...A...34  
1...A...34  
1...A...39  
1...A...39  
1...A...40  
—
1...A...39  
1...A...40  
—
—
—
14.7-15.5  
10.0-12.4  
10.0-12.4  
10.0-12.4  
14.7-15.5  
14.7-15.5  
—
10.0-12.4  
14.7-15.5  
Speed Change per Full Turn of  
Movable Pulley Flange (rpm)  
—
48  
65  
—
5
—
70  
65  
—
5
—
80  
60  
—
80  
—
60  
5
Movable Pulley Maximum Full Turns  
From Closed Position  
5
—
6
6
5
5
Factory Setting  
—
3
—
3
—
3
3
—
High-Static  
Std  
31/2  
—
856  
31/2  
—
975  
31/2  
—
31/2  
1225  
—
Factory Speed Setting (rpm)  
Alt  
1060  
High-Static  
1233  
1233  
1396  
1396  
5
5
5
5
Fan Shaft Diameter at Pulley (in.)  
/
8
/
8
/
8
/
8
LEGEND  
††Rollout switch lockout is manually reset by interrupting power to unit or  
resetting thermostat.  
Al  
Bhp  
Cu  
—
—
—
Aluminum  
Brake Horsepower  
Copper  
|| Single-phase units have a single-stage gas valve. The heating input values  
are as follows:  
48TFF004, 115,000 Btuh  
48TFF005, 150,000 Btuh  
48TFF006, 150,000 Btuh  
*Evaporator coil fin material/condenser coil fin material. Contact your local  
representative for details about coated fins.  
†Weight of 14-in. roof curb.  
NOTE: High-static motor not available on single-phase units.  
**Single phase/three-phase.  
5
Table 1 — Physical Data — 48TF004-007 (cont)  
UNIT SIZE 48TF  
E/F/M/N004  
D/E/F/L/M/N005  
D/E/F/L/M/N006  
D/E/F007  
FURNACE SECTION  
Rollout Switch Cutout  
Temp (F)††  
195  
195  
195  
195  
Burner Orifice Diameter  
(in. ...drill size)  
Natural Gas  
Std  
Alt  
TFD  
TFE  
TFF  
TFL  
TFM  
TFN  
—
.113...33  
.113...33  
.129...30  
.102...38  
.102...38  
.116...32  
.113...33  
.113...33  
.129...30  
.102...38  
.102...38  
.116...32  
.113...33  
.113...33  
.129...30  
—
.113...33  
.113...33  
—
.102...38  
.102...38  
—
—
Liquid Propane  
TFD  
TFE  
TFF  
TFL  
TFM  
TFN  
—
.089...43  
.089...43  
.102...38  
.082...45  
.082...45  
.089...43  
.089...43  
.089...43  
.102...38  
.082...45  
.082...45  
.089...43  
.089...43  
.089...43  
.102...38  
—
.089...43  
.089...43  
—
.082...45  
.082...45  
—
—
Thermostat Heat Anticipator  
Setting (amps)  
208/230 v and 575  
Stage 1  
Stage 2  
Stage 1  
Stage 2  
Stage 1  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
460 v  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
Gas Input (Btuh)||  
TFD  
TFE  
TFF  
TFL  
TFM  
TFN  
—
72,000  
115,000  
120,000  
60,000  
90,000  
120,000  
72,000  
115,000  
120,000  
60,000  
90,000  
120,000  
72,000  
115,000  
120,000  
—
72,000  
82,000  
—
60,000  
90,000  
—
—
Stage 2  
(3-phase units)  
TFF  
115,000  
150,000  
150,000  
150,000  
Efficiency (Steady  
State) (%)  
80  
—
25-55  
55-85  
—
20-50  
30-60  
80  
80  
80  
25-55  
35-65  
50-80  
—
Temperature Rise Range  
TFD  
TFE  
TFF  
TFL  
TFM  
TFN  
25-55  
35-65  
50-80  
20-50  
30-60  
40-70  
25-55  
35-65  
50-80  
20-50  
30-60  
40-70  
—
—
Manifold Pressure (in. wg)  
Natural Gas  
Std  
Alt  
3.5  
3.5  
1
3.5  
3.5  
1
3.5  
3.5  
1
3.5  
3.5  
1
Liquid Propane  
Gas Valve Quantity  
Gas Valve Pressure Range  
Psig  
0.180-0.487  
5.0-13.5  
0.180-0.487  
5.0-13.5  
0.180-0.487  
5.0-13.5  
0.180-0.487  
5.0-13.5  
in. wg  
Field Gas Connection  
Size (in.)  
1
1
1
1
/
2
/
2
/
2
/
2
HIGH-PRESSURE SWITCH (psig)  
Standard Compressor  
Internal Relief (Differential)  
Cutout  
450 ± 50  
500 ± 50  
428  
320  
428  
320  
Reset (Auto.)  
LOSS-OF-CHARGE (LOW-  
PRESSURE SWITCH) (psig)  
Cutout  
7 ± 3  
Reset (Auto.)  
22 ± 7  
FREEZE PROTECTION  
THERMOSTAT (F)  
Opens  
30 ± 5  
45 ± 5  
Closes  
OUTDOOR-AIR INLET SCREENS  
Quantity...Size (in.)  
Cleanable  
1...20 x 24 x 1  
RETURN-AIR FILTERS  
Quantity...Size (in.)  
Throwaway  
2...16 x 25 x 2  
LEGEND  
††Rollout switch lockout is manually reset by interrupting power to unit or  
resetting thermostat.  
Al  
Bhp  
Cu  
—
—
—
Aluminum  
Brake Horsepower  
Copper  
|| Single-phase units have a single-stage gas valve. The heating input values  
are as follows:  
48TFF004, 115,000 Btuh  
48TFF005, 150,000 Btuh  
48TFF006, 150,000 Btuh  
*Evaporator coil fin material/condenser coil fin material. Contact your local  
representative for details about coated fins.  
†Weight of 14-in. roof curb.  
NOTE: High-static motor not available on single-phase units.  
**Single phase/three-phase.  
6
BOTTOM POWER CHART,  
THESE HOLES REQ’D FOR USE  
WITH ACCESSORY PACKAGES —  
CRBTMPWR001A00, 3A00 (1/2″, 3/4″)  
STD UNIT  
WEIGHT  
DURABLADE  
ECONOMI$ER  
WEIGHT  
(A)  
(B)  
(C)  
(D)  
“A”  
ECONOMIZER WEIGHT  
CORNER WEIGHT CORNER WEIGHT CORNER WEIGHT CORNER WEIGHT  
UNIT  
PANEL  
LENGTH  
Lbs  
460  
470  
490  
565  
Kg  
209  
213  
222  
256  
Lbs  
Kg  
Lbs  
Kg  
Lbs  
140  
142  
150  
165  
Kg  
Lbs  
105  
106  
115  
136  
Kg  
Lbs  
159  
162  
160  
200  
Kg  
Lbs  
56  
Kg  
3
48TFN,TFM,TFF,TFE004  
48TFN,TFM,TFL,TFF,TFE,TFD005  
48TFN,TFM,TFL,TFF,TFE,TFD006  
48TFF,TFE,TFD007  
63.5  
64.4  
68.0  
74.8  
47.6  
48.1  
52.2  
61.7  
72.1  
73.5  
72.6  
90.7  
25.4  
27.2  
29.5  
29.0  
1′-10 / ″ [568.0]  
8
3
THREADED  
CONDUIT  
SIZE  
REQ’D HOLE  
SIZES  
60  
1′-10 / ″ [568.0]  
8
WIRE  
USE  
34  
15.4  
47  
21.3  
3
65  
1′-0 / ″ [315.0]  
8
(Max.)  
3
64  
1′-0 / ″ [315.0]  
1
7
8
/ ″  
2
24 V  
Power  
Gas  
/ ″ [22.2]  
8
3
/ ″  
1
1 / ″ [28.4]  
4
8
CONNECTION SIZES  
1
1
/ ″ FPT  
2
1 / ″ [31.8]  
4
3
A
B
C
D
E
F
1 / ″ Dia. [35] Field Power Supply Hole  
2″ Dia. [51] Power Supply Knockout  
2 / ″ Dia. [64] Power Supply Knockout  
/ ″ Dia. [22] Field Control Wiring Hole  
8
1
2
7
8
3
/ ″-14 NPT Condensate Drain  
/ ″-14 NPT Gas Connection  
4
1
2
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 discharge units, field-supplied flanges  
should be attached to horizontal discharge openings, and all duct-  
work 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 (National Electri-  
cal Code).  
f. Between unit and ungrounded surfaces, control box side, 36 in.  
per NEC.  
g. Between unit and block or concrete walls and other grounded sur-  
faces, 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 com-  
bustion side as stated in Note 5a, b, and c, a removable fence or bar-  
ricade 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.  
Fig. 6 — Base Unit Dimensions  
Step 7 — Make Electrical Connections  
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.  
BLOWER  
ACCESS  
PANEL  
Fig. 7 — Flue Hood Details  
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 moving the black wire  
with the 1/4-in. female space connector from the 230-volt con-  
nection and moving to the 200-volt 1/4-in. male terminal on the  
primary side of the transformer.  
Refer to unit label diagram for additional information. Pig-  
tails are provided for field wire connections. Use factory-  
supplied splices or UL (Underwriters’ Laboratories) approved  
copper/aluminum connector.  
When installing units, provide a disconnect per the NEC.  
All field wiring must comply with NEC and local  
requirements.  
Install field wiring as follows:  
LEGEND  
1. Install conduit through side panel openings. For units  
without electric heat, install conduit between disconnect  
and control box.  
NFGC — National Fuel Gas Code  
*Field supplied.  
NOTE: Follow all local codes.  
2. Install power lines to terminal connections as shown in  
Fig. 9.  
SPACING OF SUPPORTS  
STEEL PIPE  
NOMINAL DIAMETER  
X
DIMENSIONS  
(feet)  
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.  
(in.)  
1
/
6
8
10  
2
3
/
4
or 1  
1 / or larger  
1
4
Fig. 8 — Gas Piping Guide (With Accessory  
Thru-the-Curb Service Connections)  
FIELD CONTROL WIRING — Install a Carrier-approved  
accessory thermostat assembly according to installation  
instructions included with the accessory. Locate thermostat as-  
sembly on a solid wall in the conditioned space to sense aver-  
age temperature in accordance with thermostat installation in-  
structions. 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. 10).  
NOTE: For wire runs up 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.  
Pass the control wires through the hole provided in the cor-  
ner post; then feed wires through the raceway built into the  
corner post to the 24-v barrier located on the left side of the  
control box. See Fig. 11. The raceway provides the UL re-  
quired 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.  
8
208/230-3-60  
460-3-60  
(SIZE 007 ONLY)  
208/230-1-60  
575-3-60  
(SIZE 007 ONLY)  
208/230-3-60  
575-3-60, 460-3-60  
(SIZES 004-006)  
LEGEND  
C
— Contactor  
COMP — Compressor  
NEC  
TB  
— National Electrical Code  
— Terminal Block  
Fig. 9 — Power Wiring Connections  
RACEWAY  
LOW VOLTAGE  
CONNECTIONS  
INTEGRATED GAS UNIT  
CONTROLLER (IGC)  
LEGEND  
AHA  
— Adjustable Heat Anticipator  
Field Wiring  
Factory Wiring  
NOTES:  
1. Connect Y2 when unit is equipped with an economizer.  
2. Connect W2 when unit is equipped with two stages of heat.  
HOLE IN END PANEL (HIDDEN)  
Fig. 10 — Low-Voltage Connections  
Fig. 11 — Field Control Wiring Raceway  
9
Table 2 — Electrical Data  
VOLTAGE COMPRESSOR  
OFM  
(ea)  
POWER  
SUPPLY  
DISCONNECT  
SIZE*  
COMBUSTION  
FAN MOTOR  
FLA  
UNIT  
48TF  
NOMINAL  
V-Ph-Hz  
IFM  
IFM  
RANGE  
(ea)  
TYPE  
FLA  
Min Max  
RLA  
LRA  
Qty Hp FLA  
MCA  
MOCP†  
30/30  
35/35  
25/25  
25/25  
25/25  
15  
FLA  
23/23  
26/26  
17/17  
19/19  
19/19  
7
LRA  
106/106  
111/111  
85/85  
90/90  
109/109  
48/48  
48/48  
57/57  
35  
Std  
Alt  
3.5  
4.9  
3.5  
4.9  
5.2  
1.3  
2.1  
2.6  
1.3  
2.1  
2.6  
3.5  
4.9  
3.5  
4.9  
5.2  
1.8  
2.1  
2.6  
1.8  
2.1  
2.6  
5.9  
6.6  
5.9  
5.2  
7.5  
3.1  
2.6  
3.4  
3.1  
3.0  
3.4  
5.2  
7.5  
2.6  
3.4  
2.6  
3.4  
24.5/24.5  
26.6/26.6  
17.7/17.7  
19.1/19.1  
19.4/19.4  
7.6  
1
208/230-1-60  
208/230-3-60  
187 254  
187 254  
16.2  
96.0  
1
/
1.4  
.6  
4
4
Std  
Alt  
1
1
10.2  
4.4  
75.0  
40.0  
1
/
1.4  
.6  
High  
Std  
Alt  
004  
460-3-60  
414 508  
1
/
4
0.8  
.3  
8.4  
15  
8
High  
Std  
Alt  
8.9  
15  
9
6.3  
15  
7
1
1
1
575-3-60  
518 632  
187 254  
187 254  
3.7  
23.3  
15.4  
31.0  
118.0  
90.0  
1
1
1
/
4
/
4
/
4
0.8  
1.4  
1.4  
.3  
.6  
.6  
6.9  
15  
8
37  
High  
Std  
Alt  
7.3  
15  
7
45  
34.0/34.0  
35.4/35.4  
24.2/24.2  
25.6/25.6  
25.9/25.9  
13.0  
40/40  
45/45  
30/30  
30/30  
30/30  
20  
32/32  
34/34  
23/23  
25/25  
25/25  
13  
129/129  
133/133  
101/101  
105/105  
124/124  
51  
208/230-1-60  
208/230-3-60  
Std  
Alt  
High  
Std  
Alt  
005  
1
460-3-60  
414 508  
8.3  
45.0  
1
/
4
0.8  
.3  
13.3  
20  
13  
53  
High  
Std  
Alt  
13.8  
20  
13  
62  
10.1  
15  
10  
41  
1
1
1
575-3-60  
518 632  
187 254  
187 254  
6.4  
28.8  
16.3  
36.0  
147  
114  
1
1
1
/
4
/
4
/
4
0.8  
1.4  
1.4  
.3  
.6  
.6  
10.3  
15  
11  
42  
High  
Std  
Alt  
10.7  
15  
10  
50  
43.3/43.3  
44.0/44.0  
27.3/27.3  
26.6/26.6  
28.9/28.9  
13.2  
60/60  
60/60  
35/35  
35/35  
35/35  
20  
42/42  
42/42  
29/29  
26/26  
29/29  
13  
161/161  
184/184  
128/128  
148/148  
174/174  
72  
208/230-1-60  
208/230-3-60  
Std  
Alt  
High  
Std  
Alt  
006  
1
1
460-3-60  
575-3-60  
414 508  
518 632  
7.4  
6.2  
64  
62  
1
1
/
/
0.8  
0.8  
.3  
.3  
12.7  
15  
12  
81  
4
High  
Std  
Alt  
13.5  
20  
13  
94  
10.9  
15  
11  
58  
10.5  
15  
10  
66  
4
High  
Std  
High  
Std  
High  
Std  
High  
12.6  
15  
11  
76  
30.2/30.2  
32.5/32.5  
15.4  
35/35  
40/40  
20  
29/29  
32/32  
15  
180/180  
205/205  
90  
1
1
1
208/230-3-60  
460-3-60  
187 254  
414 508  
518 632  
23.6  
10.6  
8.5  
146  
73  
1
1
1
/
4
/
4
/
4
1.4  
0.6  
0.6  
.6  
.3  
.3  
007  
16.1  
20  
16  
103  
12.3  
15  
13  
72  
575-3-60  
58.4  
12.9  
20  
14  
82  
LEGEND  
— Full Load Amps  
HACR — Heating, Air Conditioning and Refrigeration  
Example: Supply voltage is 460-3-60.  
FLA  
IFM  
AB = 452 v  
BC = 464 v  
AC = 455 v  
— 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  
452 + 464 + 455  
3
Average Voltage =  
1371  
3
=
*Used to determine minimum disconnect per NEC.  
†Fuse or HACR circuit breaker.  
= 457  
Determine maximum deviation from average voltage.  
(AB) 457 – 452 = 5 v  
(BC) 464 – 457 = 7 v  
(AC) 457 – 455 = 2 v  
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.  
Maximum deviation is 7 v.  
Determine percent of voltage imbalance.  
7
% Voltage Imbalance = 100 x  
457  
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.  
= 1.53%  
This amount of phase imbalance is satisfactory as it is below the max-  
imum allowable 2%.  
% Voltage Imbalance  
max voltage deviation from average voltage  
= 100 x  
average voltage  
IMPORTANT: If the supply voltage phase imbalance is more  
than 2%, contact your local electric utility company immediately.  
10  
5. Place hood on front of outdoor air opening panel. See  
Fig. 13 for hood details. Secure top of hood with the  
4 screws removed in Step 3. See Fig. 14.  
6. Remove and save 6 screws (3 on each side) from sides of  
the manual outdoor-air damper.  
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.  
7. Align screw holes on hood with screw holes on side of  
manual outdoor-air damper. See Fig. 13 and 14. 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. 12. Slide blade  
vertically until it is in the appropriate position determined  
by Fig. 15. Tighten screws.  
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. 12.  
3. Separate hood and screen from basepan by removing the  
4 screws securing them. Save all screws.  
4. Replace evaporator coil access panel.  
9. Remove and save screws currently on sides of hood. In-  
sert screen. Secure screen to hood using the screws. See  
Fig. 14.  
OUTDOOR  
AIR OPENING  
PANEL  
3 SCREWS  
(SIDE)  
Fig. 14 — Outdoor-Air Damper with  
Hood Attached  
Fig. 12 — Damper Panel with Manual Outdoor-Air  
Damper Installed  
Fig. 15 — Position Setting  
Fig. 13 — Outdoor-Air Hood Details  
11  
OPTIONAL DURABLADE ECONOMIZER — The  
op-  
tional economizer hood assembly is packaged and shipped in  
the filter section. Damper blades and control boards are in-  
stalled at the factory and the economizer is shipped in the verti-  
cal 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.  
Assembly:  
1. Determine if ventilation air is required in building. If so,  
determine 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  
access panel. Remove outdoor-air opening panel. Save  
panels and screws. See Fig. 16. Remove optional  
outdoor-air damper hood package from filter section.  
Fig. 16 — Typical Access Panel Locations  
3. Assemble outdoor-air hood top and side plates as shown  
in Fig. 17. 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  
economizer motor faces the condenser section  
(see Fig. 18).  
b. 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. 19.  
5. Insert economizer plug into economizer harness. Remove  
tape from barometric relief damper. See Fig. 20.  
6. If ventilation air is not required, proceed to Step 7. If ven-  
tilation air is required, determine minimum position set-  
ting for required airflow. See Fig. 21. 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. 21. 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. 22. Make sure OAT terminals are posi-  
tioned up.  
Fig. 17 — Outdoor-Air Hood Details  
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.  
ECONOMIZER  
CONTROL  
BOARD  
9. Fasten hood top and side plate assembly (Fig. 17) to  
outdoor-air opening panel with screws provided.  
10. Place knob supplied with economizer on OAT. See  
Fig. 22. Set for 3° F below indoor room thermostat set-  
ting. If accessory enthalpy control (EC) is used in place of  
OAT, see instructions shipped with EC for installation  
and adjustment. See Fig. 22.  
BAROMETRIC  
RELIEF  
DAMPER  
ECONOMIZER  
PLUG  
SHIPPING  
SCREW  
11. Connect OAT per Fig. 23.  
12. Slide outdoor-air inlet screen into screen track on hood  
side plate. While holding screen in place, fasten screen re-  
tainer to hood using screws provided.  
ECONOMIZER  
MOTOR  
NOTE: Refer to Fig. 24 for economizer barometric relief  
damper characteristics.  
Fig. 18 — Horizontal Durablade Economizer  
Installation  
12  
BLOCK-OFF PLATE  
Fig. 19 — Horizontal Discharge Block-Off Plate  
ECONOMIZER  
CONTROL  
BOARD  
U-SHAPED  
HOLE  
ECONOMIZER  
PLUG  
ECONOMIZER TOP  
MOTOR SCREW  
(NOT  
SHOWN)  
WIRING  
HARNESS  
BAROMETRIC  
RELIEF DAMPER  
SHIPPING  
SCREW  
POSITION SETTING  
BRACKET  
Fig. 20 — Durablade Economizer Installed in Unit  
ENTHALPY  
CONTROL  
R
E
V
B
.
B
C
D
HOOD  
97-3672  
.
REV  
EXAMPLE:  
Fig. 22 — Outdoor-Air Thermostat/  
Enthalpy Control Installation  
Given —Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . 0.2 in. wg  
Outdoor Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 cfm  
Determine — Setting = 5 in.  
Fig. 21 — Durablade Economizer  
Minimum Position Setting  
13  
ECONOMI$ER  
PLUG  
CONTROLLER  
GEAR-DRIVEN  
DAMPER  
LEGEND  
OAT — Outdoor-Air Thermostat  
NOTE: See unit wiring diagram for details.  
OUTDOOR AIR  
TEMPERATURE  
SENSOR  
Fig. 23 — Wiring Connections for  
Outdoor-Air Thermostat  
ACTUATOR  
0.90  
BAROMETRIC RELIEF DAMPERS  
Fig. 25 — EconoMi$er Component Locations  
0.80  
0.70  
0.60  
0.50  
0.40  
0.30  
0.20  
0.10  
0.00  
100  
200  
300  
400  
500  
600  
700  
800  
CFM  
Fig. 24 — Durablade Economizer  
Barometric Relief Damper Characteristics  
OPTIONAL ECONOMI$ER — See Fig. 25 for EconoMi$er  
component locations.  
1. To remove the existing unit filter access panel, raise the  
panel and swing the bottom outward. The panel is now  
disengaged from the track and can be removed. Remove  
the indoor coil access panel and discard. See Fig. 26.  
FILTER ACCESS  
PANEL  
OUTDOOR-AIR  
OPENING PANEL  
Fig. 26 — Typical Access Panel Locations  
If installing an optional Power Exhaust Assembly, refer to  
the EconoMi$er Power Exhaust Installation Instructions.  
Controller should be mounted in vertical position as  
shown in Fig. 25.  
2. Assemble the hood assembly as follows:  
OUTDOOR AIR  
OPENING PANEL  
EXHAUST AIR  
HOOD TOP  
Remove the EconoMi$er hood from its packaging. Re-  
move shipping brackets holding hood package to  
EconoMi$er. Locate the outdoor-air opening panel. See  
Fig. 27. Remove hood assembly shipping brackets locat-  
ed on the back (sloped) side of the EconoMi$er assembly.  
These brackets are used to retain the hood assembly dur-  
ing shipping only.  
SCREEN  
RETAINER  
EXHAUST AIR  
HOOD SIDES  
SEAL STRIP  
3. Installs the 1/8 x 3/4-in. seal strip on the exhaust air hood  
side panels and the bottom bracket. Assemble the exhaust  
air hood to the outdoor-air opening panel as shown in  
Fig. 27, using the screws provided. Do not attach hood  
assembly to unit at this time.  
4. Install the 1/8 x 3/4-in. seal strip on the outdoor-air hood  
top and side panels. Assemble the outdoor-air hood to the  
outdoor-air opening panel as shown in Fig. 28, using the  
screws provided. Do not attach hood assembly to the unit  
at this time.  
EXHAUST AIR SCREEN  
EXHAUST AIR  
BOTTOM BRACKET  
Fig. 27 — Exhaust Air Hood Assembly  
14  
5. Slide the outdoor-air inlet screens into the screen track on  
the hood side panels. While holding the screens in place,  
fasten the screen retainer to the hood using the screws  
provided. Repeat the process for the barometric exhaust  
air screen. Do not attach completed (Fig. 29) hood as-  
sembly to unit at this time.  
6. Slide the EconoMi$er assembly into the rooftop unit. See  
Fig. 30 and 31.  
NOTE: Be sure to engage rear EconoMi$er flange under  
tabs in return-air opening of the unit base. See Fig. 30.  
7. Install the outdoor-air block-off plate, then secure the  
EconoMi$er with the screws provided. See Fig. 31.  
8. Remove and discard the 12-pin jumper plug from the unit  
wiring harness located in the upper left corner and insert  
the EconoMi$er plug into the unit wiring harness. Refer  
to wiring diagram Fig. 32 and 33. Also refer to Fig. 34 if  
installing an accessory power exhaust.  
9. Install the complete hood assembly on the unit and secure  
using the screws provided.  
Fig. 29 — Completed Hood Assembly  
ECONOMI$ER CLIP  
HVAC UNIT  
UNIT FILTER  
RACK  
10. Remove the indoor fan motor access panel. See Fig. 35.  
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. 36). Connect the violet and  
pink wires to the corresponding connections on the  
supply-air temperature sensor. Replace the indoor fan  
motor access panel.  
ECONOMI$ER  
UNIT BASE  
ECONOMI$ER REAR  
FLANGE  
Fig. 30 — Rear EconoMi$er Flange Installation  
OUTDOOR AIR  
SEAL STRIP  
OPENING  
PANEL  
OUTDOOR AIR  
HOOD TOP  
WIRING  
HARNESS  
SCREEN  
RETAINER  
OUTDOOR AIR  
INLET  
SCREENS  
SEAL STRIP  
OUTDOOR  
AIR  
BLOCK-OFF  
PLATE  
ASSEMBLED  
EXHAUST HOOD  
OUTDOOR AIR  
HOOD SIDES  
Fig. 28 — Outdoor-Air Hood Assembly  
Fig. 31 — EconoMi$er Installed  
15  
LEGEND  
OAT — Outdoor-Air Temperature  
RAT — Return-Air Temperature  
Fig. 32 — EconoMi$er Wiring  
ECONOMI$ER  
CONTROLLER  
BROWN  
TEMP  
VIOLET  
TEMP  
OUTDOOR  
AIR  
OAT  
COM  
OAH  
-15 V  
RAT  
COM  
OUT  
PWR  
SENSOR  
WHITE  
RED  
BROWN  
TEMP  
VIOLET  
WHITE  
RETURN  
AIR  
SENSOR  
TEMP  
COM  
OUT  
COM  
RAH  
+15 V  
RED  
PWR  
CO2  
V+  
SENSOR  
24  
(+)  
CO2  
CO2 COM  
DAT  
COM VAC  
COM  
SUPPLY AIR  
TEMPERATURE SENSOR  
REM POT  
COM  
PINK  
TEMP  
TEMP  
LED  
COM  
VIOLET  
Fig. 33 — EconoMi$er Sensor Wiring  
16  
TO FUSED  
DISCONNECT  
RED  
H1  
GRAY  
RED YEL BLU  
GRAY  
H4  
H2  
H1  
H3  
H2  
X4  
X2  
X1  
X2  
X3  
X4  
X1  
X3  
FIELD SUPPLIED  
WIRING  
SECONDARY  
230VAC  
SECONDARY  
230VAC  
BLACK  
BLACK  
COMPRESSOR 1  
CONTACTOR  
OR  
LT. BLUE  
B
A
11  
13  
21  
23  
3
2
1
9
8
7
6
5
4
230VAC  
BLACK  
BROWN  
FAN 1  
R1  
24 VAC  
3-PIN  
CONNECTOR  
PLUG  
C1  
GREEN/  
YELLOW  
4-PIN  
CONNECTOR  
PLUG  
2 x 4 IN.  
HANDY BOX  
BLUE  
ORANGE  
1
YELLOW  
2
L1  
L2  
BLACK L1  
1
2
3
4
1
2
BLUE  
L2  
BROWN  
3
GREEN GND  
GND  
BLACK  
BLUE  
3
4
BLACK  
LT. BLUE  
230 VAC  
1 PHASE  
GREEN  
B
A
3
2
1
9
8
7
6
5
BLACK  
R2  
24 VAC  
BROWN  
C1  
FAN 2  
GREEN/  
YELLOW  
4
BLUE  
Fig. 34 — Wiring Diagram for Power Exhaust System  
CONTROL BOX/BURNER  
ACCESS PANEL  
INDOOR FAN MOTOR  
ACCESS PANEL AND BLOWER  
Fig. 35 — Typical Access Panel Locations (Standard Efficiency Unit Shown)  
17  
Ventilation Air (Minimum Position Set Up) — If ventilation  
air is not required, proceed to Step 5. If ventilation air is re-  
quired, perform the following:  
1. The indoor fan must be on to set the ventilation air.  
Either put the thermostat in the continuous fan mode or  
jumper the R and G terminals at the rooftop unit con-  
nection board.  
2. Locate the minimum position (MIN POS) potentiome-  
ter. Turn the potentiometer full CCW to fully close the  
outdoor air dampers. Turn the potentiometer gradually  
clockwise (CW) to the desired position. See Fig. 37.  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
MOUNTING  
LOCATION  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
3. Replace the filter access panel. See Fig. 26. Ensure the  
filter access panel slides along the tracks and is  
securely engaged.  
Fig. 36 — Supply-Air Sensor Placement  
4. Calculate the minimum airflow across the  
EconoMi$er.  
a. Calculate % of outside air using the following  
formula.  
CO2 Control Setup — If a CO2 sensor is not being used, pro-  
ceed to the next section. If a CO2 sensor is being used, perform  
the following:  
% Outdoor air through EconoMi$er  
Mixture Temp – Return Air Temp  
% Outdoor air =  
Outdoor Temp – Return Air Temp  
1. Determine the value at which you want the minimum  
position of the dampers to begin opening to allow a  
greater amount of outdoor air to enter. The range is  
800 to 1,400 ppm.  
b. Divide total CFM by percentage outdoor air, this  
gives outdoor air volume in CFM.  
5. Turn on base unit power.  
2. Locate the CO2 SP (PPM) potentiometer and adjust to  
the desired set point. See Fig. 37.  
NOTE: The EconoMi$er begins operation three min-  
utes after power up.  
Mechanical Cooling Lockout — Determine the outdoor-air  
temperature at which you want the mechanical cooling (com-  
pressors) to be disabled. Locate the mechanical cooling lockout  
(MECH CLG LOCKOUT) potentiometer. To disable this fea-  
ture, 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. 37.  
Personal Injury Hazard. Avoid possible injury by keep-  
ing fingers away from damper blades.  
6. See Fig. 38 for barometric relief damper  
characteristics.  
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. 37. When the OAT is above this  
set point, the damper is limited to minimum position setting.  
Table 3 — Changeover Set Points  
SETTINGS  
Dry Bulb (°F)  
A
B
C
D
Fig. 37 — EconoMi$er Control Adjustment  
Potentiometers (Factory Settings)  
73  
27  
69  
25  
66  
24  
63  
22  
Single Enthalpy* (Btu/lb)  
Differential Temperature*  
(°F, Not Adjustable)  
2
1
2
1
2
1
2
1
0.5  
0.4  
0.3  
0.2  
0.1  
0
Differential Enthalpy*  
(Btu/lb, Not Adjustable)  
*Field-installed accessory.  
If a potentiometer fails, its setting will default to the values  
in Table 4.  
Table 4 — Default Potentiometer Settings  
POTENTIOMETER  
DEFAULT SETTING  
600 800 1000 1200 1400 1600  
FLOW (CUBIC FEET/MINUTE)  
0
200 400  
CO SP (PPM)  
MECH CLG LOCKOUT  
ECON SP  
1,000  
47°  
D
2
MIN POS (%)  
20  
Fig. 38 — Barometric Relief Capacity  
18  
To align fan and motor pulleys:  
1. Loosen fan pulley setscrews.  
2. Slide fan pulley along fan shaft.  
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 one finger).  
3. Tighten motor mounting nuts.  
4. Adjust bolt and tighten nut to secure motor in fixed  
position.  
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  
diagram for motor reconnection. See Fig. 39 for direct drive  
motor location.  
BELT-DRIVE MOTORS — Fan motor pulleys are factory  
set for speed shown in table 1. See Fig. 40 for belt drive motor  
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.  
2. Loosen belt by loosening fan motor mounting nuts. See  
Fig. 40.  
3. Loosen movable pulley flange setscrew (see Fig. 41).  
4. Screw movable flange toward fixed flange to increase  
speed and away from fixed flange to decrease speed. In-  
creasing 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.)  
MOTOR MOUNTING  
PLATE NUTS  
Fig. 40 — Belt Drive Motor Mounting  
Fig. 41 — Evaporator-Fan Pulley Adjustment  
Fig. 39 — Direct Drive Motor Mounting  
19  
Table 5 — Fan Rpm at Motor Pulley Settings*  
MOTOR PULLEY TURNS OPEN  
UNIT  
48TF  
1
1
1
1
1
1
0
/
1
1 /  
2
2 /  
3
3 /  
4
4 /  
5
5 /  
2
6
—
2
2
2
2
2
1000  
1455  
1185  
1455  
1300  
1685  
1460  
1685  
976  
1423  
1150  
1423  
1260  
1589  
1420  
1589  
952  
928  
1360  
1080  
1360  
1180  
1525  
1345  
1525  
904  
880  
1297  
1010  
1297  
1100  
1460  
1265  
1460  
856  
832  
1233  
940  
808  
784  
1170  
870  
760  
—
1107  
—
004†  
004**  
005†  
005**  
006†  
006**  
007††  
007**  
1392  
1115  
1392  
1220  
1557  
1380  
1557  
1328  
1045  
1328  
1140  
1493  
1305  
1493  
1265  
975  
1202  
905  
1138  
835  
1075  
—
1265  
1060  
1428  
1225  
1428  
1233  
1020  
1396  
1185  
1396  
1202  
980  
1170  
940  
1138  
900  
1107  
—
1075  
—
1364  
1150  
1364  
1332  
1110  
1332  
1300  
1070  
1300  
—
—
—
—
—
—
*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  
UNIT  
48TF  
EVAPORATOR-FAN  
MOTOR  
UNIT  
MAXIMUM ACCEPTABLE  
CONTINUOUS BHP*  
MAXIMUM ACCEPTABLE  
OPERATING WATTS  
MAXIMUM  
VOLTAGE  
208/230  
460  
AMP DRAW  
2.8  
Standard  
Alternate  
High Static  
Standard  
Alternate  
High Static  
Standard  
Alternate  
High Static  
Standard  
High Static  
0.34  
1.00  
440  
1000  
2120  
850  
1.3  
575  
1.3  
208/230  
460  
4.9  
004  
2.1  
575  
2.1  
208/230  
460  
6.0  
2.40  
3.0  
575  
3.0  
208/230  
460  
3.5  
0.75  
1.8  
575  
1.8  
208/230  
460  
4.9  
005  
1.00  
1000  
2120  
1340  
2120  
2562  
2120  
2562  
2.1  
575  
2.1  
208/230  
460  
6.0  
2.40  
3.0  
575  
3.0  
208/230  
460  
5.9  
1.20  
3.2  
575  
3.2  
208/230  
460  
10.1/6.7†  
3.0  
006  
1.30/2.40†  
2.90  
575  
3.0  
208/230  
460  
8.6  
3.9  
575  
3.9  
208/230  
460  
6.7  
2.40  
3.0  
575  
3.0  
007  
208/230  
460  
8.6  
2.90  
3.9  
575  
3.9  
LEGEND  
BHP — Brake Horsepower  
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.  
*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.  
2. High-static motor not available on single-phase units.  
†Single phase/three-phase.  
Table 7 — Accessory/FIOP Static Pressure* (in. wg) — 48TF004-007  
CFM  
COMPONENT  
900  
0.05  
0.05  
1200  
0.05  
0.09  
1400  
0.05  
0.13  
1600  
0.05  
0.17  
1800  
0.05  
0.22  
2000  
0.05  
0.27  
2200  
0.05  
0.32  
2400  
0.05  
0.39  
2600  
0.05  
0.45  
3000  
0.05  
0.53  
Durablade Economizer  
EconoMi$er  
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.  
20  
Table 8 — Fan Performance 48TF004 — Vertical Discharge Units, Standard Motor  
48TF004 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
High Speed  
Airflow  
(Cfm)  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
0.49  
0.42  
0.37  
0.33  
0.27  
0.20  
0.16  
0.21  
0.23  
0.24  
0.26  
0.27  
0.29  
0.30  
253  
270  
287  
304  
321  
338  
355  
0.50  
0.43  
0.38  
0.33  
0.28  
0.23  
0.18  
0.23  
0.25  
0.26  
0.27  
0.29  
0.30  
0.31  
277  
292  
307  
323  
338  
354  
369  
0.51  
0.43  
0.39  
0.34  
0.28  
0.25  
0.20  
0.26  
0.27  
0.28  
0.29  
0.31  
0.32  
0.33  
307  
321  
335  
349  
364  
378  
392  
0.55  
0.51  
0.46  
0.40  
0.34  
—
0.31  
0.32  
0.33  
0.34  
0.34  
—
363  
374  
385  
397  
408  
—
—
—
—
LEGEND  
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.  
Bhp  
Esp  
—
—
Brake Horsepower Input to Fan  
External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
Table 9 —Fan Performance 48TF004 — Vertical Discharge Units, Alternate Motor  
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.3 0.4  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.5  
0.6  
900  
1000  
1100  
1200  
1300  
1400  
1500  
581  
644  
687  
733  
754  
810  
841  
0.12  
0.19  
0.22  
0.26  
0.29  
0.35  
0.42  
119  
189  
219  
259  
288  
348  
418  
673  
709  
746  
785  
826  
868  
911  
0.18  
0.22  
0.26  
0.32  
0.38  
0.45  
0.53  
179  
219  
259  
318  
378  
448  
527  
736  
782  
806  
843  
891  
937  
985  
0.22  
0.28  
0.30  
0.35  
0.43  
0.51  
0.61  
219  
279  
298  
348  
428  
507  
607  
805 0.25  
835 0.30  
867 0.35  
903 0.41  
942 0.48  
984 0.57  
1029 0.66  
249  
298  
348  
408  
477  
567  
656  
865 0.29  
900 0.35  
929 0.40  
960 0.47  
991 0.53  
1032 0.62  
1073 0.72  
288  
348  
398  
467  
527  
617  
716  
911 0.34  
937 0.38  
964 0.40  
994 0.50  
1047 0.60  
1067 0.67  
1109 0.77  
338  
378  
398  
497  
597  
666  
766  
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
0.9 1.0  
Airflow  
(Cfm)  
0.7  
0.8  
1.1  
1.2  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
957 0.39  
992 0.44  
1013 0.49  
1045 0.56  
1075 0.64  
1110 0.73  
1150 0.78  
388  
438  
487  
557  
637  
726  
816  
988 0.43  
1039 0.49  
1068 0.55  
1090 0.64  
1122 0.70  
1160 0.78  
1190 0.84  
428  
487  
547  
637  
696  
766  
855  
1039 0.47  
1061 0.55  
1091 0.61  
1109 0.68  
1152 0.76  
1181 0.83  
1225 0.89  
448  
507  
577  
647  
716  
806  
895  
1061 0.51  
1088 0.60  
1109 0.66  
1156 0.73  
1190 0.82  
1237 0.88  
1271 0.95  
487  
547  
607  
676  
756  
845  
945  
1083 0.54  
1111 0.66  
1127 0.73  
1203 0.81  
1228 0.87  
1293 0.94  
1317 1.00  
527  
587  
637  
706  
796  
885  
995  
1105 0.58  
1136 0.72  
1145 0.80  
1250 0.86  
1266 0.94  
1349 0.99  
1383 1.05  
567  
627  
666  
736  
836  
925  
1044  
LEGEND  
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.  
Bhp  
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
—
—
Watts  
*Motor drive range is 760 to 1000 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
21  
Table 10 — Fan Performance 48TF004 — Vertical Discharge Units, High-Static Motor  
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.6  
Airflow  
(Cfm)  
0.2  
0.4  
0.8  
1.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
673  
709  
746  
785  
826  
868  
911  
0.18  
0.22  
0.26  
0.32  
0.38  
0.45  
0.53  
179  
219  
259  
318  
378  
448  
527  
805  
835  
867  
903  
942  
984  
1029  
0.25  
0.30  
0.35  
0.41  
0.48  
0.57  
0.66  
249  
298  
348  
408  
477  
567  
656  
911  
937  
0.34  
0.38  
0.40  
0.50  
0.60  
0.67  
0.77  
338  
378  
398  
497  
597  
666  
766  
988  
1039  
1068  
1090  
1122  
1160  
1190  
0.43  
0.49  
0.55  
0.64  
0.70  
0.84  
1.00  
428  
487  
547  
637  
696  
766  
855  
1061  
1086  
1109  
1156  
1190  
1237  
1271  
0.47  
0.55  
0.61  
0.68  
0.76  
0.85  
0.95  
487  
547  
607  
676  
756  
845  
945  
964  
994  
1047  
1067  
1109  
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.6  
Airflow  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
1105  
1136  
1145  
1210  
1266  
1349  
1383  
0.57  
0.63  
0.67  
0.74  
0.84  
0.93  
1.05  
567  
627  
666  
736  
836  
925  
1044  
1140  
1172  
1181  
1248  
1306  
1391  
1426  
0.63  
0.69  
0.73  
0.81  
0.92  
1.02  
1.15  
622  
688  
1170  
1203  
1213  
1282  
1341  
1492  
1465  
0.68  
0.75  
0.80  
0.88  
1.00  
1.11  
1.25  
674  
745  
1198  
1232  
1242  
1312  
1373  
1463  
1500  
0.73  
0.80  
0.85  
0.94  
1.07  
1.19  
1.34  
723  
799  
1224  
1258  
1268  
1340  
1402  
1494  
1532  
0.77  
0.86  
0.91  
1.01  
1.14  
1.26  
1.43  
771  
852  
731  
792  
850  
906  
808  
917  
1015  
1146  
875  
993  
1100  
1242  
939  
1000  
1136  
1257  
1419  
1066  
1180  
1332  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
Table 11 — Fan Performance 48TF005 — Vertical Discharge Units, Standard Motor  
48TF005 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
High Speed  
Airflow  
(Cfm)  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
0.68  
0.61  
0.53  
0.45  
0.36  
0.26  
0.15  
0.04  
—
0.41  
0.42  
0.45  
0.47  
0.49  
0.52  
0.54  
0.56  
—
458  
471  
503  
536  
557  
584  
610  
629  
—
0.74  
0.67  
0.59  
0.51  
0.42  
0.32  
0.22  
0.11  
—
0.45  
0.46  
0.49  
0.52  
0.54  
0.57  
0.60  
0.62  
—
506  
521  
556  
593  
616  
646  
674  
696  
—
0.74  
0.66  
0.59  
0.52  
0.45  
0.37  
0.30  
0.23  
0.16  
0.51  
0.52  
0.54  
0.56  
0.58  
0.60  
0.62  
0.64  
0.66  
572  
589  
616  
631  
654  
678  
698  
720  
744  
0.85  
0.78  
0.70  
0.63  
0.56  
0.48  
0.41  
0.34  
0.26  
0.56  
0.58  
0.60  
0.62  
0.64  
0.66  
0.68  
0.70  
0.73  
632  
651  
681  
698  
723  
750  
772  
796  
823  
LEGEND  
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.  
Bhp — Brake Horsepower Input to Fan  
Esp — External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
22  
Table 12 — Fan Performance 48TF005 — Vertical Discharge Units, Alternate Motor  
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4  
Airflow  
(Cfm)  
0.1  
0.2  
0.3  
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  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
596 0.20 210  
633 0.24 252  
672 0.30 315  
711 0.35 368  
751 0.42 441  
791 0.49 515  
831 0.58 609  
872 0.67 704  
913 0.77 809  
665 0.25 263  
699 0.30 315  
735 0.36 378  
770 0.42 441  
835 0.49 515  
873 0.57 599  
881 0.66 693  
919 0.75 788  
722 0.31 320  
754 0.36 378  
788 0.42 441  
822 0.49 510  
871 0.56 588  
907 0.65 678  
929 0.74 772  
779 0.36  
809 0.42  
840 0.48  
873 0.55  
907 0.63  
941 0.72  
976 0.81  
378  
441  
504  
578  
662  
872 0.48  
902 0.55  
933 0.62  
963 0.69  
993 0.77  
504  
578  
651  
915 0.54  
943 0.61  
972 0.69  
567  
641  
957 0.60  
984 0.67  
630  
704  
788  
858  
950  
720 1011 0.75  
804 1041 0.84  
869 1072 0.93  
725 1002 0.77  
787 1033 0.85  
889 1064 0.96  
757 1024 0.87  
851 1057 0.97  
967 1091 1.08 1104 1127 1.17 1191 1162 1.25 1277  
976 1103 1.04 1063  
991 1095 1.06 1078 1132 1.14 1165  
965 0.84 877 1011 0.92  
958 0.86 904 1002 0.95 993 1046 1.03 1082 1125 1.21 1237 1160 1.30 1323 1195 1.38 1410  
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
Airflow  
External Static Pressure (in. wg)  
1.2  
0.9  
1.0  
1.1  
1.4  
1.6  
1.8  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
993 0.65  
1021 0.74  
1049 0.82  
1077 0.92  
1107 1.00  
678 1028 0.69  
772 1058 0.80  
837 1086 0.89  
922 1113 0.99  
725 1056 0.72  
841 1090 0.85  
885 1120 0.96  
751 1083 0.74  
888 1121 0.89  
950 1153 1.00  
778 1134 0.80  
935 1171 0.94  
976 1210 1.12 1071 1257 1.17 1105 1307 1.25 1190  
935 1185 0.88  
988 1219 1.00  
965 1331 0.99 1000  
999 1268 1.10 1029  
985 1147 1.06 1054 1180 1.13 1081 1241 1.27 1215 1295 1.37 1294 1339 1.43 1350  
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  
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  
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  
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  
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  
LEGEND  
3. Values include losses for filters, unit casing, and wet coils. See Table 7  
for accessory/FIOP static pressure information.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
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.  
FIOP  
Watts  
*Motor drive range is 835 to 1185 rpm. All other rpms require a field-supplied  
drive.  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
NOTES:  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
Table 13 — Fan Performance 48TF005 — Vertical Discharge Units, High-Static Motor  
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
Airflow  
External Static Pressure (in. wg)  
0.6  
0.2  
0.4  
0.8  
1.0  
(Cfm)  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
665  
699  
735  
770  
835  
873  
881  
919  
958  
0.25  
0.30  
0.36  
0.42  
0.49  
0.57  
0.66  
0.75  
0.86  
263  
315  
378  
441  
515  
599  
693  
788  
904  
779  
809  
0.36  
0.42  
0.48  
0.55  
0.63  
0.72  
0.81  
0.92  
1.03  
378  
441  
504  
578  
662  
757  
851  
967  
1082  
872  
902  
0.48  
0.55  
0.62  
0.69  
0.77  
0.87  
0.97  
1.08  
1.21  
504  
578  
957  
984  
0.60  
0.67  
0.75  
0.84  
0.93  
1.04  
1.14  
1.25  
1.38  
630  
704  
1028  
1058  
1086  
1113  
1141  
1171  
1202  
1232  
1262  
0.69  
0.80  
0.89  
0.99  
1.09  
1.20  
1.32  
1.45  
1.58  
725  
841  
840  
933  
651  
1011  
1041  
1072  
1103  
1132  
1162  
1195  
788  
885  
873  
963  
993  
1024  
1057  
1091  
1125  
725  
858  
950  
1063  
1165  
1277  
1410  
985  
907  
787  
1084  
1194  
1313  
1442  
1572  
941  
889  
976  
991  
1011  
1046  
1104  
1237  
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
Airflow  
External Static Pressure (in. wg)  
1.6  
1.2  
1.4  
1.8  
2.0  
(Cfm)  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
1083  
1121  
1153  
1180  
1207  
1235  
1263  
1294  
1325  
0.74  
0.89  
1.00  
1.13  
1.25  
1.37  
1.49  
1.63  
1.78  
778  
935  
1134  
1171  
1210  
1241  
1269  
1296  
1323  
1351  
1362  
0.80  
0.94  
1.12  
1.27  
1.40  
1.53  
1.67  
1.81  
1.97  
935  
988  
1185  
1219  
1257  
1295  
1326  
1354  
1381  
1408  
1436  
0.88  
1.00  
1.17  
1.37  
1.54  
1.70  
1.85  
2.00  
2.16  
965  
999  
1331  
1268  
1307  
1339  
1376  
1407  
1436  
1463  
1489  
0.99  
1.10  
1.25  
1.43  
1.65  
1.84  
2.02  
2.19  
2.36  
1000  
1029  
1190  
1350  
1558  
1738  
1907  
2068  
2229  
1374  
1309  
1349  
1382  
1420  
1452  
1482  
—
1.09  
1.21  
1.37  
1.57  
1.81  
2.02  
2.22  
—
1083  
1203  
1367  
1564  
1805  
2013  
2210  
—
967  
1071  
1215  
1339  
1463  
1597  
1731  
1894  
1105  
1294  
1454  
1605  
1747  
1889  
2040  
1081  
1196  
1310  
1425  
1559  
1702  
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
23  
Table 14 — Fan Performance 48TF006 — Vertical Discharge Units, Standard Motor  
48TF006 (5 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
230,460,575 V  
Bhp Watts Esp Bhp Watts Esp  
Medium Speed  
230,460,575 V  
Bhp Watts Esp Bhp Watts Esp  
High Speed  
230,460,575 V  
Bhp Watts Esp Bhp Watts  
Airflow  
(Cfm)  
208 V  
208 V  
208 V  
Esp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
0.69  
0.49  
0.29  
0.09  
—
0.67  
0.70  
0.73  
0.75  
—
750  
780  
810  
839  
—
1.01  
0.85  
0.70  
0.54  
0.39  
0.23  
0.08  
—
0.71  
0.74  
0.77  
0.80  
0.83  
0.86  
0.89  
—
791  
824  
857  
891  
924  
957  
990  
—
1.00  
0.85  
0.70  
0.55  
0.40  
0.25  
0.10  
—
0.70  
0.74  
0.77  
0.81  
0.84  
0.88  
0.91  
—
782  
821  
861  
900  
940  
979  
1018  
—
1.20  
1.06  
0.93  
0.80  
0.67  
0.54  
0.41  
0.28  
0.15  
0.02  
—
0.76  
0.79  
0.83  
0.86  
0.90  
0.93  
0.96  
1.00  
1.03  
1.07  
—
845  
883  
1.22  
1.09  
0.97  
0.84  
0.72  
0.59  
0.46  
0.34  
0.21  
0.09  
—
0.79  
0.82  
0.85  
0.89  
0.92  
0.95  
0.99  
1.02  
1.06  
1.09  
—
875  
913  
1.28  
1.17  
1.06  
0.95  
0.84  
0.73  
0.62  
0.51  
0.40  
0.29  
0.18  
0.85  
0.89  
0.92  
0.96  
0.99  
1.03  
1.06  
1.10  
1.13  
1.17  
1.20  
949  
988  
921  
950  
1027  
1066  
1105  
1144  
1183  
1222  
1261  
1300  
1340  
959  
997  
988  
1025  
1063  
1101  
1138  
1176  
1213  
—
—
—
—
1035  
1073  
1111  
1149  
1187  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
Esp  
—
—
Brake Horsepower Input to Fan  
External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
Table 15 — Fan Performance 48TF006 — Vertical Discharge Units, Alternate Motor  
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4 0.6  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.8  
1.0  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
729 0.36  
770 0.42  
811 0.50  
852 0.58  
893 0.68  
935 0.78  
977 0.89  
1019 1.02  
1061 1.16  
1103 1.30  
1145 1.46  
368  
429  
511  
593  
695  
797  
788 0.42  
826 0.49  
864 0.57  
903 0.66  
942 0.76  
982 0.87  
429  
501  
582  
674  
896 0.56  
930 0.64  
964 0.72  
999 0.82  
572  
981 0.69  
705 1070 0.85  
797 1098 0.94  
899 1124 1.03  
1001 1155 1.13  
1124 1191 1.26  
1247 1227 1.40  
1380 1260 1.54  
1523 1294 1.70  
1686 1328 1.80  
1860 1362 2.03  
2044 1397 2.22  
869 1144 1.01  
961 1173 1.11  
1053 1203 1.21  
1155 1231 1.32  
1288 1288 1.43  
1431 1287 1.57  
1574 1323 1.72  
1737 1359 1.89  
1901 1393 2.07  
2074 1426 2.26  
2269 1460 2.45  
1032  
1134  
1237  
1349  
1461  
1604  
1758  
1931  
2115  
2310  
2504  
654 1015 0.78  
736 1051 0.88  
838 1085 0.98  
940 1119 1.10  
1063 1153 1.22  
1196 1187 1.35  
1328 1222 1.49  
1502 1258 1.65  
1645 1293 1.80  
1819 1329 2.00  
777 1035 0.92  
889 1070 1.04  
1012 1107 1.17  
1145 1144 1.30  
1288 1182 1.47  
1441 1220 1.61  
1604 1259 1.78  
910 1022 0.99  
1042 1063 1.12  
1185 1104 1.26  
1328 1145 1.41  
1492 1186 1.57  
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
Airflow  
1.2  
1.4  
1.6  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1226 1.19  
1242 1.28  
1270 1.39  
1300 1.52  
1329 1.64  
1355 1.77  
1381 1.91  
1413 2.08  
1449 2.26  
1485 2.47  
1216 1301 1.46  
1308 1318 1.49  
1420 1335 1.58  
1553 1361 1.71  
1676 1391 1.80  
1809 1420 1.99  
1952 1449 2.14  
2126 1474 2.30  
1492 1380 1.69  
1523 1392 1.78  
1615 1408 1.80  
1747 1423 1.91  
1891 1448 2.05  
2034 1477 2.21  
1757  
1800  
1850  
1952  
2095  
2258  
—
—
—
—
—
2167  
2350  
—
—
—
—
—
—
—
—
—
—
—
2310  
2524  
—
—
—
—
—
—
—
—
—
—
—
LEGEND  
3. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
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.  
FIOP  
Watts  
*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.  
6. Interpolation is permissible. Do not extrapolate.  
24  
Table 16 — Fan Performance 48TF006 — Vertical Discharge Units, High-Static Motor  
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.6  
Airflow  
(Cfm)  
0.2  
0.4  
0.8  
1.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
808  
846  
0.42  
0.49  
0.57  
0.66  
0.78  
0.87  
0.99  
1.12  
1.28  
1.41  
1.57  
429  
501  
914  
950  
0.56  
0.64  
0.72  
0.82  
0.92  
1.04  
1.17  
1.30  
1.47  
1.61  
1.78  
572  
645  
1001  
1034  
1068  
1105  
1143  
1177  
1210  
1245  
1284  
1323  
1363  
0.69  
0.78  
0.88  
0.98  
1.10  
1.22  
1.35  
1.49  
1.65  
1.80  
2.00  
705  
797  
1084  
1111  
1145  
1179  
1212  
1247  
1284  
1322  
1356  
1389  
1424  
0.85  
0.94  
1.03  
1.13  
1.26  
1.40  
1.54  
1.70  
1.80  
2.03  
2.22  
869  
961  
1168  
1194  
1218  
1246  
1280  
1300  
1347  
1380  
1418  
1456  
1500  
1.01  
1.11  
1.21  
1.32  
1.43  
1.57  
1.72  
1.89  
2.07  
2.26  
2.45  
1032  
1134  
1237  
1349  
1481  
1604  
1758  
1931  
2115  
2310  
2504  
884  
592  
983  
736  
899  
1053  
1155  
1288  
1431  
1574  
1737  
1901  
2074  
2269  
942  
965  
674  
1018  
1057  
1096  
1136  
1173  
1210  
1249  
1289  
838  
940  
1001  
1124  
1247  
1380  
1523  
1686  
1860  
2044  
777  
1008  
1051  
1095  
1140  
1185  
1231  
889  
1063  
1196  
1328  
1502  
1645  
1819  
1012  
1145  
1288  
1441  
1604  
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.6  
Airflow  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1199  
1263  
1295  
1319  
1343  
1374  
1409  
1442  
1475  
1565  
1596  
1.19  
1.28  
1.39  
1.52  
1.64  
1.77  
1.91  
2.08  
2.26  
2.47  
2.95  
1216  
1308  
1420  
1553  
1676  
1809  
1952  
2126  
2310  
2524  
3010  
1126  
1275  
1351  
1389  
1415  
1438  
1465  
1498  
1554  
1649  
1682  
1.46  
1.49  
1.58  
1.71  
1.80  
1.99  
2.14  
2.30  
2.64  
2.89  
3.45  
1492  
1523  
1615  
1747  
1891  
2034  
2167  
2350  
2698  
2948  
3522  
1250  
1299  
1352  
1453  
1478  
1505  
1533  
1568  
1627  
1726  
1760  
1.69  
1.78  
1.80  
1.91  
2.05  
2.21  
2.45  
2.64  
3.03  
3.31  
3.96  
1757  
1800  
1850  
1952  
1095  
2258  
2501  
2688  
3091  
3379  
4036  
1301  
1352  
1407  
1494  
1538  
1566  
1596  
1632  
1693  
—
1.91  
2.01  
2.03  
2.15  
2.31  
2.49  
2.77  
2.97  
3.42  
—
1944  
2047  
2070  
2197  
2358  
2542  
2821  
3031  
3486  
—
1349  
1401  
1459  
1548  
1594  
1624  
1654  
1691  
1755  
—
2.12  
2.23  
2.26  
2.40  
2.57  
2.77  
3.08  
3.31  
3.81  
—
2164  
2280  
2305  
2446  
2625  
2830  
3141  
3375  
3881  
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
25  
Table 17 — Fan Performance 48TF007 — Vertical Discharge Units, Standard Motor  
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4 0.6  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.8  
1.0  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
942 0.70  
982 0.80  
1022 0.91  
1063 0.99  
646  
978 0.66  
700 1063 0.82  
779 1097 0.91  
867 1132 1.01  
771 1147 0.97  
843 1175 1.11 1006 1266 1.29 1156 1356 1.47 1310  
924 1218 1.23 1106 1303 1.41 1258 1397 1.52 1353  
891 1248 1.20 1081 1322 1.33 1190  
739 1023 0.78  
835 1068 0.90  
916 1115 1.00  
998 1180 1.17 1056 1261 1.35 1207 1340 1.53 1361 1428 1.66 1473  
1104 1.13 1039 1159 1.15 1081 1214 1.28 1148 1310 1.52 1353 1375 1.63 1447 1459 1.80 1595  
1130 1.26 1156 1202 1.29 1140 1248 1.38 1233 1358 1.69 1499 1410 1.72 1526 1488 1.93 1709  
1174 1.37 1258 1237 1.41 1224 1292 1.55 1378 1392 1.81 1604 1460 1.90 1683 1532 2.14 1892  
1201 1.48 1361 1272 1.53 1335 1335 1.71 1517 1427 1.94 1718 1518 2.16 1910 1575 2.35 2076  
1246 1.62 1491 1320 1.68 1482 1368 1.81 1604 1458 2.06 1823 1562 2.42 2136 1620 2.59 2283  
1285 1.75 1613 1361 1.82 1595 1400 1.91 1691 1490 2.19 1936 1602 2.64 2326 1666 2.85 2504  
1304 1.87 1726 1402 1.95 1639 1439 2.08 1840 1543 2.43 2145 1642 2.86 2512  
1345 2.07 1910 1446 2.16 1814 1477 2.16 1989 1585 2.65 2335  
1378 2.26 2084 1489 2.36 2032 1529 2.52 2223 1598 2.73 2444  
—
—
—
—
—
—
—-  
—
—
—
—
—
—
—
—
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in.wg)  
Airflow  
1.2  
1.4  
1.6  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1395 1.46 1301 1475 1.56 1387 1542 1.71 1517  
1430 1.58 1404 1504 1.69 1499 1556 1.82 1613  
1459 1.67 1482 1532 1.82 1613 1588 1.97 1744  
1489 1.80 1595 1567 1.99 1761 1626 2.16 1910  
1528 1.95 1726 1603 2.17 1919 1666 2.37 2093  
1561 2.13 1884 1637 2.35 2076 1710 2.54 2272  
1584 2.28 2015 1671 2.55 2249 1756 2.70 2467  
1633 2.53 2232 1698 2.72 2405  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1675 2.77 2436  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1070 to 1460 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
26  
Table 18 — Fan Performance 48TF007 — Vertical Discharge Units, High-Static Motor  
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.6  
Airflow  
(Cfm)  
0.2  
0.4  
0.8  
1.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
978  
1023  
1068  
1115  
1159  
1202  
1237  
1272  
1320  
1361  
1402  
1446  
1489  
0.66  
0.78  
0.90  
1.00  
1.15  
1.29  
1.41  
1.53  
1.68  
1.82  
1.95  
2.16  
2.36  
700  
779  
867  
1063  
1097  
1132  
1180  
1214  
1248  
1292  
1335  
1368  
1400  
1439  
1477  
1529  
0.82  
0.91  
1.01  
1.17  
1.28  
1.38  
1.55  
1.71  
1.81  
1.91  
2.08  
2.16  
2.52  
771  
843  
924  
1147  
1175  
1218  
1261  
1310  
1358  
1392  
1427  
1458  
1490  
1543  
1585  
1598  
0.97  
1.11  
1.23  
1.35  
1.52  
1.69  
1.81  
1.94  
2.06  
2.19  
2.43  
2.65  
2.73  
891  
1006  
1106  
1207  
1353  
1499  
1604  
1718  
1823  
1936  
2145  
2335  
2444  
1248  
1266  
1303  
1340  
1375  
1410  
1460  
1518  
1562  
1602  
1642  
1753  
1767  
1.20  
1.29  
1.41  
1.53  
1.63  
1.72  
1.90  
2.16  
2.42  
2.64  
2.86  
3.58  
3.69  
1081  
1156  
1258  
1361  
1447  
1526  
1683  
1910  
2136  
2326  
2512  
3262  
3360  
1322  
1356  
1397  
1428  
1459  
1488  
1532  
1575  
1620  
1666  
1775  
—
1.33  
1.47  
1.52  
1.66  
1.80  
1.93  
2.14  
2.35  
2.59  
2.85  
3.62  
—
1190  
1310  
1353  
1473  
1595  
1709  
1892  
2076  
2283  
2504  
3290  
—
988  
1056  
1148  
1233  
1378  
1517  
1604  
1691  
1840  
1989  
2223  
1081  
1140  
1224  
1335  
1482  
1595  
1639  
1814  
2032  
—
—
—
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.6  
Airflow  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1395  
1430  
1459  
1489  
1528  
1561  
1584  
1633  
1675  
1776  
—
1.46  
1.58  
1.67  
1.80  
1.95  
2.13  
2.28  
2.53  
2.77  
3.45  
—
1301  
1404  
1482  
1595  
1726  
1884  
2015  
2232  
2436  
3141  
—
1475  
1504  
1532  
1567  
1603  
1637  
1671  
1698  
1768  
—
1.56  
1.69  
1.82  
1.99  
2.17  
2.35  
2.55  
2.72  
3.26  
—
1387  
1499  
1613  
1761  
1919  
2076  
2249  
2405  
2964  
—
1542  
1556  
1588  
1626  
1666  
1710  
1756  
1779  
—
—
—
—
—
1.71  
1.82  
1.97  
2.16  
2.37  
2.54  
2.70  
3.13  
—
—
—
—
—
1517  
1613  
1744  
1910  
2093  
2272  
2467  
2848  
—
—
—
—
—
1607  
1621  
1655  
1694  
1736  
1782  
—
—
—
—
—
1.94  
2.06  
2.23  
2.44  
2.68  
2.87  
—
—
—
—
—
1761  
1874  
2029  
2224  
2441  
2616  
—
—
—
—
—
1667  
1682  
1717  
1758  
—
—
—
—
—
—
—
—
—
2.16  
2.30  
2.49  
2.73  
—
—
—
—
—
—
—
—
—
1967  
2093  
2266  
2485  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
27  
Table 19 — Fan Performance 48TF004 — Horizontal Discharge Units, Standard Motor  
48TF004 (3 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
High Speed  
Airflow  
(Cfm)  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
0.54  
0.49  
0.43  
0.39  
0.33  
0.26  
0.21  
0.21  
0.23  
0.24  
0.26  
0.27  
0.29  
0.30  
253  
270  
287  
304  
321  
338  
355  
0.57  
0.51  
0.45  
0.40  
0.35  
0.28  
0.23  
0.23  
0.25  
0.26  
0.27  
0.29  
0.30  
0.31  
277  
292  
307  
323  
338  
354  
369  
0.55  
0.52  
0.46  
0.38  
0.35  
0.29  
0.24  
0.26  
0.27  
0.28  
0.29  
0.31  
0.32  
0.33  
307  
321  
335  
349  
364  
378  
392  
0.60  
0.53  
0.49  
0.43  
0.36  
—
0.31  
0.32  
0.33  
0.34  
0.34  
—
363  
374  
385  
397  
408  
—
—
—
—
LEGEND  
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.  
Bhp  
Esp  
—
—
Brake Horsepower Input to Fan  
External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
Table 20 — Fan Performance 48TF004 — Horizontal Discharge Units, Alternate Motor  
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.3 0.4  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.5  
0.6  
900  
1000  
1100  
1200  
1300  
1400  
1500  
526  
570  
614  
658  
703  
725  
755  
0.06  
0.09  
0.13  
0.16  
0.20  
0.29  
0.33  
70  
109  
149  
189  
239  
288  
328  
584  
627  
670  
710  
752  
776  
816  
0.08  
0.13  
0.16  
0.23  
0.27  
0.31  
0.38  
99  
149  
189  
229  
269  
308  
378  
656  
738  
758  
780  
808  
845  
870  
0.12  
0.19  
0.23  
0.28  
0.32  
0.38  
0.43  
139  
189  
229  
279  
318  
378  
428  
734  
800  
812  
840  
868  
891  
924  
0.22  
0.26  
0.29  
0.32  
0.37  
0.42  
0.48  
219  
259  
288  
318  
368  
418  
477  
818  
848  
863  
889  
916  
937  
969  
0.25  
0.29  
0.32  
0.36  
0.41  
0.47  
0.53  
269  
288  
308  
358  
408  
467  
527  
875  
895  
914  
938  
963  
983  
0.27  
0.31  
0.35  
0.40  
0.45  
0.51  
269  
308  
348  
398  
448  
507  
577  
1014 0.58  
48TF004 (3 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
0.9 1.0  
Airflow  
(Cfm)  
0.7  
0.8  
1.1  
1.2  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
924 0.32  
936 0.35  
960 0.39  
988 0.45  
1012 0.51  
1027 0.56  
1056 0.63  
308  
348  
388  
448  
507  
557  
627  
953 0.35  
977 0.39  
1005 0.43  
1038 0.50  
1061 0.56  
1071 0.60  
1097 0.68  
348  
388  
428  
497  
557  
597  
676  
989 0.38  
1020 0.44  
1052 0.49  
1076 0.53  
1094 0.61  
1108 0.67  
1117 0.70  
388  
438  
487  
527  
607  
666  
696  
1028 0.42  
1064 0.48  
1100 0.52  
1136 0.59  
1172 0.65  
1208 0.70  
1245 0.74  
438  
477  
527  
577  
647  
706  
776  
1074 0.45  
1124 0.52  
1163 0.56  
1201 0.61  
1239 0.69  
1278 0.75  
1315 0.80  
487  
537  
587  
647  
716  
786  
865  
1120 0.50  
1185 0.55  
1225 0.60  
1266 0.64  
1306 0.72  
1347 0.79  
1385 0.85  
537  
597  
647  
716  
786  
865  
955  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
28  
Table 21 — Fan Performance 48TF004 — Horizontal Discharge Units, High-Static Motor  
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
Airflow  
0.2  
0.4  
0.6  
0.8  
1.0  
(Cfm)  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
584  
627  
670  
710  
752  
776  
816  
0.08  
0.13  
0.16  
0.23  
0.27  
0.31  
0.38  
99  
149  
189  
229  
269  
308  
378  
734  
800  
812  
840  
868  
891  
924  
0.22  
0.26  
0.29  
0.32  
0.37  
0.42  
0.48  
219  
259  
288  
318  
368  
418  
477  
875  
895  
914  
938  
963  
983  
1014  
0.27  
0.31  
0.35  
0.40  
0.45  
0.51  
0.58  
269  
308  
348  
398  
448  
507  
577  
953  
977  
1005  
1038  
1061  
1071  
1097  
0.36  
0.39  
0.43  
0.50  
0.56  
0.60  
0.68  
348  
388  
428  
497  
557  
597  
676  
1028  
1064  
1000  
1136  
1172  
1208  
1245  
0.42  
0.48  
0.52  
0.59  
0.65  
0.70  
0.74  
438  
477  
527  
577  
647  
706  
776  
48TF004 (3 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.6  
Airflow  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
900  
1000  
1100  
1200  
1300  
1400  
1500  
1120  
1185  
1225  
1266  
1306  
1347  
1385  
0.54  
0.60  
0.65  
0.72  
0.79  
0.87  
0.96  
537  
597  
647  
716  
786  
865  
955  
1155  
1222  
1263  
1306  
1347  
1389  
1428  
0.59  
0.66  
0.71  
0.79  
0.87  
0.95  
1.05  
589  
655  
709  
786  
862  
950  
1048  
1186  
1255  
1298  
1341  
1383  
1427  
1467  
0.64  
0.71  
0.77  
0.86  
0.94  
1.03  
1.14  
639  
709  
1215  
1285  
1328  
1373  
1416  
1461  
1502  
0.69  
0.77  
0.83  
0.92  
1.01  
1.11  
1.22  
685  
761  
1240  
1312  
1357  
1402  
1446  
1492  
1534  
0.73  
0.82  
0.88  
0.98  
1.07  
1.18  
1.30  
730  
811  
769  
825  
879  
851  
934  
1029  
1135  
914  
973  
1003  
1104  
1218  
1068  
1176  
1298  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
29  
Table 22 — Fan Performance 48TF005 — Horizontal Discharge Units, Standard Motor  
48TF005 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
High Speed  
Airflow  
(Cfm)  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
208 V  
Bhp  
230, 460, 575 V  
Bhp  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
Esp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
0.75  
0.68  
0.60  
0.51  
0.42  
0.32  
0.21  
0.09  
—
0.41  
0.42  
0.45  
0.47  
0.49  
0.52  
0.54  
0.56  
—
458  
471  
503  
536  
557  
584  
610  
629  
—
0.81  
0.74  
0.66  
0.58  
0.49  
0.39  
0.29  
0.18  
0.06  
0.45  
0.46  
0.49  
0.52  
0.54  
0.57  
0.60  
0.62  
0.65  
506  
521  
556  
593  
616  
646  
674  
696  
731  
0.87  
0.79  
0.71  
0.64  
0.56  
0.48  
0.41  
0.33  
0.26  
0.51  
0.52  
0.54  
0.56  
0.58  
0.60  
0.62  
0.64  
0.66  
572  
589  
616  
631  
654  
678  
698  
720  
744  
0.92  
0.85  
0.77  
0.70  
0.63  
0.55  
0.48  
0.41  
0.33  
0.56  
0.58  
0.60  
0.62  
0.64  
0.66  
0.68  
0.70  
0.73  
632  
651  
681  
698  
723  
750  
772  
796  
823  
LEGEND  
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.  
Bhp  
Esp  
—
—
Brake Horsepower Input to Fan  
External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
Table 23 — Fan Performance 48TF005 — Horizontal Discharge Units, Alternate Motor  
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4  
Airflow  
(Cfm)  
0.1  
0.2  
0.3  
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  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
569 0.18 189 641 0.23 242 701 0.29 299  
604 0.22 231 673 0.28 294 731 0.34 352  
640 0.27 284 705 0.33 347 761 0.39 410  
676 0.32 336 738 0.38 399 793 0.45 468  
713 0.38 399 772 0.44 462 825 0.51 536  
750 0.45 473 806 0.51 536 857 0.59 615  
788 0.52 546 841 0.59 620 890 0.67 704  
826 0.60 630 876 0.68 714 924 0.76 799  
761 0.34 357  
788 0.39 410  
817 0.45 473  
847 0.51 536  
877 0.58 609  
908 0.66 693  
859 0.46  
887 0.52  
914 0.59  
940 0.65  
967 0.73  
997 0.81  
483 901 0.52  
546 928 0.59  
620 955 0.66  
683 982 0.73  
767 1009 0.81  
851 1037 0.90  
546 943 0.58  
615 968 0.65  
688 996 0.72  
767 1024 0.81  
851 1051 0.89  
609  
683  
757  
851  
935  
940 1077 1.01 1030  
939 0.75 788 1026 0.91  
971 0.84 883 1056 1.01 1061 1094 1.10 1151 1132 1.18 1240  
956 1065 1.01 1040 1104 1.07 1124  
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  
48TF005 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.2  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.9  
1.0  
1.1  
1.4  
1.6  
1.8  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
987 0.64  
1006 0.71  
1033 0.79  
1060 0.88  
652 1030 0.70  
709 1044 0.77  
797 1069 0.86  
891 1095 0.95  
695 1068 0.79  
736 1086 0.84  
838 1104 0.93  
792 1106 0.87  
833 1128 0.91  
889 1134 0.98  
930 1183 1.10 1052 1226 1.23 1215 1297 1.35 1406  
998 1189 1.12 1138 1245 1.21 1358  
925 1139 1.01 1012 1218 1.14 1090 1286 1.34 1282 1320 1.48 1463  
930 1129 1.02 1022 1162 1.09 1114 1228 1.24 1186 1303 1.40 1339 1343 1.60 1530  
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  
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  
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  
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  
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  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 835 to 1185 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
6. Interpolation is permissible. Do not extrapolate.  
30  
Table 24 — Fan Performance 48TF005 — Horizontal Discharge Units, High-Static Motor  
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
Airflow  
0.2  
0.4  
0.6  
0.8  
1.0  
(Cfm)  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
641  
673  
705  
738  
772  
806  
841  
876  
912  
0.23  
0.28  
0.33  
0.38  
0.44  
0.51  
0.59  
0.68  
0.77  
242  
294  
347  
399  
462  
536  
620  
714  
809  
761  
788  
817  
847  
877  
908  
939  
971  
1004  
0.34  
0.39  
0.45  
0.51  
0.58  
0.66  
0.75  
0.84  
0.94  
357  
410  
473  
536  
609  
693  
789  
883  
988  
859  
887  
0.46  
0.52  
0.59  
0.65  
0.73  
0.81  
0.91  
1.01  
1.12  
483  
546  
943  
968  
0.58  
0.65  
0.72  
0.81  
0.89  
1.01  
1.07  
1.18  
1.30  
609  
683  
1030  
1044  
1069  
1095  
1123  
1151  
1178  
1204  
1231  
0.70  
0.77  
0.86  
0.95  
1.05  
1.15  
1.26  
1.37  
1.48  
695  
736  
914  
620  
996  
757  
838  
940  
683  
1024  
1051  
1077  
1104  
1132  
1162  
851  
935  
1030  
1124  
1240  
1366  
930  
967  
767  
1073  
1185  
1318  
1502  
1604  
997  
851  
1026  
1056  
1087  
956  
1061  
1177  
48TF005 (4 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.6  
Airflow  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
Rpm  
Bhp  
Watts  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
1106  
1128  
1139  
1162  
1185  
1215  
1243  
1271  
1298  
0.87  
0.91  
1.01  
1.09  
1.20  
1.31  
1.43  
1.56  
1.69  
889  
930  
1134  
1183  
1218  
1228  
1250  
1276  
1303  
1330  
1358  
0.98  
1.10  
1.14  
1.24  
1.35  
1.48  
1.61  
1.74  
1.89  
998  
1052  
1090  
1186  
1291  
1415  
1540  
1664  
1808  
1189  
1226  
1286  
1303  
1319  
1334  
1359  
1386  
1413  
1.12  
1.23  
1.34  
1.40  
1.51  
1.64  
1.78  
1.93  
2.08  
1138  
1215  
1282  
1339  
1444  
1569  
1702  
1846  
1989  
1245  
1297  
1320  
1343  
1382  
1389  
1418  
1439  
1468  
1.21  
1.35  
1.48  
1.60  
1.68  
1.80  
1.95  
2.11  
2.27  
1358  
1406  
1463  
1530  
1607  
1722  
1865  
2018  
2171  
1292  
1346  
1370  
1393  
1434  
1451  
1471  
1493  
—
1.35  
1.51  
1.65  
1.79  
1.88  
2.01  
2.18  
2.36  
—
1345  
1500  
1645  
1778  
1867  
2001  
2167  
2345  
—
1012  
1114  
1226  
1339  
1461  
1594  
1727  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
Table 25 — Fan Performance 48TF006 — Horizontal Discharge Units, Standard Motor  
48TF006 (5 TONS) — STANDARD MOTOR (DIRECT DRIVE)  
Low Speed  
230, 460, 575 V  
Bhp Watts Esp Bhp Watts Esp  
Medium Speed  
230, 460, 575 V  
Bhp Watts Esp Bhp Watts Esp  
High Speed  
230, 460, 575 V  
Bhp Watts Esp Bhp Watts  
Airflow  
(Cfm)  
208V  
208 V  
208 V  
Esp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
0.74  
0.54  
0.34  
0.14  
—
0.67  
0.70  
0.73  
0.75  
—
750  
780  
810  
839  
—
1.06  
0.90  
0.75  
0.59  
0.44  
0.28  
0.13  
—
0.71  
0.74  
0.77  
0.80  
0.83  
0.86  
0.89  
—
791  
824  
857  
891  
924  
957  
990  
—
1.07  
0.92  
0.77  
0.62  
0.47  
0.32  
0.17  
0.02  
—
0.70  
0.74  
0.77  
0.81  
0.84  
0.88  
782 1.27  
821 1.13  
861 1.00  
900 0.87  
940 0.74  
979 0.61  
0.76  
0.79  
0.83  
0.86  
0.90  
845 1.26  
883 1.14  
921 1.01  
959 0.89  
997 0.77  
0.79  
0.82  
0.85  
0.88  
875 1.33  
913 1.22  
950 1.11  
988 1.00  
0.85  
0.89  
949  
988  
0.92 1027  
0.96 1066  
0.99 1105  
1.03 1144  
1.06 1183  
1.10 1222  
1.13 1261  
1.17 1300  
1.20 1340  
0.92 1025 0.89  
0.95 1063 0.78  
0.99 1101 0.67  
1.02 1138 0.56  
1.06 1176 0.45  
1.09 1213 0.34  
—
—
—
0.93 1035 0.64  
0.96 1073 0.51  
1.00 1111 0.39  
1.03 1149 0.26  
1.07 1187 0.14  
—
—
—
0.91 1018 0.48  
0.95 1058 0.35  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.22  
0.09  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.23  
LEGEND  
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.  
Bhp  
Esp  
—
—
Brake Horsepower Input to Fan  
External Static Pressure (in. wg)  
FIOP — Factory-Installed Option  
NOTES:  
1. Values include losses for filters, unit casing, and wet coils. See  
Table 7 for accessory/FIOP static pressure information.  
31  
Table 26 — Fan Performance 48TF006 — Horizontal Discharge Units, Alternate Motor  
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4 0.6  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.8  
1.0  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
730 0.34  
770 0.40  
811 0.47  
852 0.55  
894 0.54  
936 0.74  
978 0.85  
357  
420  
494  
578  
567  
778  
789 0.40  
826 0.46  
865 0.54  
905 0.62  
945 0.72  
984 0.82  
420  
483  
567  
896 0.53  
931 0.61  
966 0.69  
557  
990 0.67  
704 1072 0.83  
788 1101 0.91  
883 1133 1.01 1061 1205 1.18 1240  
977 1163 1.10 1156 1235 1.29 1355  
872 1153 1.00 1051  
956 1178 1.09 1145  
641 1020 0.75  
725 1051 0.84  
820 1084 0.93  
651 1002 0.78  
757 1037 0.88  
925 1119 1.04 1093 1194 1.21 1271 1266 1.40 1471  
862 1072 0.98 1030 1154 1.16 1219 1226 1.33 1397 1297 1.53 1608  
977 1108 1.10 1156 1192 1.29 1355 1259 1.47 1545 1327 1.66 1744  
893 1024 0.93  
1021 0.97 1019 1064 1.05 1103 1145 1.22 1282 1225 1.43 1503 1294 1.62 1702 1359 1.80 1902  
1064 1.10 1156 1104 1.18 1240 1183 1.36 1429 1260 1.57 1650 1330 1.78 1870 1392 1.97 2070  
1107 1.24 1303 1145 1.32 1387 1222 1.45 1524 1296 1.73 1818 1365 1.94 2038 1426 2.15 2259  
1150 1.39 1460 1186 1.48 1555 1262 1.68 1765 1331 1.89 1986 1400 2.12 2227 1461 2.34 2459  
48TF006 (5 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
1.4 1.6  
Airflow  
(Cfm)  
1.2  
1.8  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1221 1.17 1229 1256 1.30 1366 1283 1.32 1387 1303 1.22 1282  
1252 1.27 1334 1311 1.45 1524 1340 1.58 1660 1330 1.61 1692  
1278 1.37 1439 1345 1.57 1650 1397 1.76 1849 1424 1.89 1986  
1303 1.48 1555 1371 1.69 1776 1433 1.90 1996 1480 2.09 2196  
1330 1.59 1671 1396 1.80 1902 1460 2.03 2133 1517 2.25 2364  
1362 1.73 1818 1422 1.94 2038 1485 2.16 2270 1544 2.40 2522  
1393 1.87 1965 1452 2.08 2185 1510 2.31 2427 1570 2.55 2674  
1423 2.02 2122 1483 2.24 2354 1538 2.46 2585 1594 2.71 2821  
1454 2.18 2291 1515 2.41 2532 1571 2.64 2758 1623 2.88 2976  
1485 2.36 2480 1544 2.59 2721 1604 2.84 2947 1657 3.07 3152  
1518 2.55 2679 1574 2.78 2905 1633 3.03 3134 1692 3.28 3345  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*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.  
6. Interpolation is permissible. Do not extrapolate.  
32  
Table 27 — Fan Performance 48TF006 — Horizontal Discharge Units, High-Static Motor  
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
Airflow  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
789 0.40  
826 0.46  
865 0.54  
905 0.62  
945 0.72  
984 0.82  
1024 0.93  
420  
483  
567  
896 0.53  
931 0.61  
966 0.69  
557  
990 0.67  
704 1072 0.83  
788 1101 0.91  
872 1153 1.00 1051 1221 1.17 1229  
956 1178 1.09 1145 1252 1.27 1334  
641 1020 0.75  
725 1051 0.84  
820 1084 0.93  
883 1133 1.01 1061 1205 1.18 1240 1278 1.37 1439  
661 1002 0.78  
757 1037 0.88  
977 1163 1.10 1156 1235 1.29 1355 1303 1.48 1555  
925 1119 1.04 1093 1194 1.21 1271 1266 1.40 1471 1330 1.59 1671  
862 1072 0.98 1030 1154 1.16 1219 1226 1.33 1397 1297 1.53 1608 1362 1.73 1818  
977 1108 1.10 1156 1192 1.29 1355 1259 1.47 1545 1327 1.66 1744 1393 1.87 1965  
1064 1.05 1103 1145 1.22 1282 1225 1.43 1503 1294 1.62 1702 1359 1.80 1902 1423 2.02 2122  
1104 1.18 1240 1183 1.36 1429 1260 1.57 1650 1330 1.78 1870 1392 1.97 2070 1454 2.18 2291  
1145 1.32 1387 1222 1.45 1524 1296 1.73 1818 1365 1.94 2038 1426 2.15 2259 1485 2.36 2480  
1186 1.48 1555 1262 1.68 1765 1331 1.89 1986 1400 2.12 2227 1461 2.34 2459 1518 2.55 2679  
48TF006 (5 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
Airflow  
1.4  
1.6  
1.8  
2.0  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1256 1.30 1366 1283 1.32 1387 1303 1.22 1282 1345 1.34 1390  
1311 1.45 1524 1340 1.58 1660 1330 1.61 1692 1373 1.77 1834  
1345 1.57 1650 1397 1.76 1849 1424 1.89 1986 1470 2.08 2153  
1371 1.69 1776 1433 1.90 1996 1480 2.09 2196 1528 2.30 2381  
1396 1.80 1902 1460 2.03 2133 1517 2.25 2364 1566 2.47 2563  
1422 1.94 2038 1485 2.16 2270 1544 2.40 2522 1594 2.64 2734  
1452 2.08 2185 1510 2.31 2427 1570 2.55 2674 1620 2.80 2905  
1483 2.24 2354 1538 2.46 2585 1594 2.71 2821 1645 2.98 3087  
1515 2.41 2532 1571 2.64 2758 1623 2.88 2976 1675 3.17 3280  
1544 2.59 2721 1604 2.84 2947 1657 3.07 3152 1710 3.38 3497  
1574 2.78 2905 1633 3.03 3134 1692 3.28 3345 1746 3.61 3736  
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
33  
Table 28 — Fan Performance 48TF007 — Horizontal Discharge Units, Standard Motor  
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
0.4 0.6  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
Airflow  
(Cfm)  
0.1  
0.2  
0.8  
1.0  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
885 0.63  
928 0.73  
971 0.84  
1015 0.97  
1060 1.10  
623  
700  
942 0.73  
982 0.83  
700 1047 0.90  
779 1084 1.02  
835 1139 1.05  
932 1160 1.11 1006 1223 1.24 1114 1301 1.38 1233  
956 1193 1.14 1031 1276 1.30 1165  
787 1022 0.94  
891 1063 1.10  
867 1121 1.12 1014 1188 1.22 1097 1254 1.36 1216 1329 1.44 1284  
998 1140 1.18 1064 1196 1.27 1140 1272 1.45 1292 1354 1.58 1404  
998 1104 1.20 1081 1159 1.23 1106 1229 1.41 1258 1306 1.53 1361 1363 1.70 1508  
1104 1.25 1123 1130 1.27 1140 1196 1.37 1224 1264 1.56 1387 1340 1.66 1473 1397 1.86 1648  
1138 1.30 1165 1174 1.37 1224 1245 1.57 1396 1305 1.63 1447 1373 1.84 1630 1440 1.95 1726  
1183 1.43 1275 1201 1.50 1335 1284 1.65 1465 1338 1.75 1552 1402 1.99 1761 1469 2.04 1805  
1210 1.58 1404 1246 1.67 1482 1312 1.76 1560 1366 1.96 1735 1435 2.10 1858 1494 2.19 1936  
1254 1.76 1560 1285 1.80 1595 1354 1.95 1726 1403 2.14 1892 1474 2.21 1954 1536 2.46 2171  
1274 1.82 1613 1304 1.85 1639 1374 2.12 1875 1459 2.25 1989 1514 2.42 2136 1570 2.66 2343  
1318 1.95 1726 1345 2.05 1814 1412 2.32 2050 1496 2.54 2240 1529 2.61 2300 1603 2.87 2521  
1362 2.20 1945 1378 2.30 2032 1451 2.40 2119 1534 2.66 2343 1560 2.81 2470 1611 3.01 2648  
48TF007 (6 TONS) — STANDARD MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
Airflow  
1.2  
1.4  
1.6  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1341 1.40 1250 1413 1.55 1378 1474 1.58 1404  
1374 1.53 1361 1437 1.62 1439 1490 1.67 1482  
1396 1.66 1473 1460 1.68 1491 1509 1.77 1569  
1413 1.75 1552 1475 1.73 1534 1529 1.92 1700  
1434 1.81 1604 1487 1.85 1639 1554 2.07 1831  
1459 1.88 1665 1520 2.07 1831 1576 2.24 1980  
1502 2.06 1823 1552 2.24 1980 1604 2.42 2136  
1524 2.24 1980 1585 2.42 2136 1638 2.60 2292  
1552 2.40 2119 1616 2.63 2317 1671 2.80 2462  
1584 2.61 2300 1646 2.83 2487 1706 2.97 2653  
1624 2.85 2504 1677 2.99 2661  
—
—
—
—
—
—
—
—
—
1671 3.03 2725  
—
—
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1070 to 1460 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
34  
Table 29 — Fan Performance 48TF007 — Horizontal Discharge Units, High-Static Motor  
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)*  
External Static Pressure (in. wg)  
Airflow  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
942 0.73  
982 0.83  
1022 0.94  
1063 1.10  
700 1047 0.90  
779 1084 1.02  
835 1139 1.05  
956 1193 1.14 1031 1276 1.30 1165 1341 1.40 1250  
932 1160 1.11 1006 1223 1.24 1114 1301 1.38 1233 1374 1.53 1361  
867 1121 1.12 1014 1188 1.22 1097 1254 1.36 1216 1329 1.44 1284 1396 1.66 1473  
998 1140 1.18 1064 1196 1.27 1140 1272 1.45 1292 1354 1.58 1404 1413 1.75 1552  
1104 1.20 1081 1159 1.23 1106 1229 1.41 1258 1306 1.53 1361 1363 1.70 1508 1434 1.81 1604  
1130 1.27 1140 1196 1.37 1224 1264 1.56 1387 1340 1.66 1473 1397 1.86 1648 1459 1.88 1665  
1174 1.37 1224 1245 1.57 1396 1305 1.63 1447 1373 1.84 1630 1440 1.95 1726 1502 2.06 1823  
1201 1.50 1335 1284 1.65 1465 1338 1.75 1552 1402 1.99 1761 1469 2.04 1805 1524 2.24 1980  
1246 1.67 1482 1312 1.76 1560 1366 1.96 1735 1435 2.10 1858 1494 2.19 1936 1552 2.40 2119  
1285 1.80 1595 1354 1.95 1726 1403 2.14 1892 1474 2.21 1954 1536 2.46 2171 1584 2.61 2300  
1304 1.85 1639 1374 2.12 1875 1459 2.25 1989 1514 2.42 2136 1570 2.66 2343 1624 2.85 2504  
1345 2.05 1814 1412 2.32 2050 1496 2.54 2240 1529 2.61 2300 1603 2.87 2521 1671 3.03 2725  
1378 2.30 2032 1451 2.40 2119 1534 2.66 2343 1560 2.81 2470 1611 3.01 2648 1692 3.49 3140  
48TF007 (6 TONS) — HIGH-STATIC MOTOR (BELT DRIVE)* (cont)  
External Static Pressure (in. wg)  
Airflow  
1.4  
1.6  
1.8  
2.0  
(Cfm)  
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1413 1.55 1378 1474 1.58 1404 1522 1.74 1564 1566 1.89 1704  
1437 1.62 1439 1490 1.67 1482 1538 1.84 1653 1583 2.00 1801  
1460 1.68 1491 1509 1.77 1569 1558 1.95 1752 1603 2.12 1909  
1475 1.73 1534 1529 1.92 1700 1578 2.11 1901 1624 2.30 2070  
1478 1.85 1639 1554 2.07 1831 1604 2.28 2049 1651 2.48 2232  
1520 2.07 1831 1576 2.24 1980 1627 2.46 2218 1674 2.68 2415  
1552 2.24 1980 1604 2.42 2136 1656 2.66 2396 1704 2.90 2609  
1585 2.42 2136 1638 2.60 2292 1691 2.86 2574 1740 3.12 2804  
1616 2.63 2317 1671 2.80 2462 1725 3.08 2772 1775 3.35 3019  
1646 2.83 2487 1706 2.97 2653 1761 3.27 2941  
1677 2.99 2661 1739 3.33 2998 1795 3.67 3299  
—
—
—
—
—
—
—
—
—
—
—
—
1742 3.43 3090  
1764 3.95 3558  
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND  
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.  
Bhp  
—
—
—
Brake Horsepower Input to Fan  
Factory-Installed Option  
Input Watts to Motor  
FIOP  
Watts  
*Motor drive range is 1300 to 1685 rpm. All other rpms require a field-  
supplied drive.  
NOTES:  
5. Use of a field-supplied motor may affect wire sizing. Contact your  
Carrier representative for details.  
6. Interpolation is permissible. Do not extrapolate.  
1. Boldface indicates field-supplied drive is required.  
2.  
indicates field-supplied motor and drive are required.  
35  
START-UP  
Main Burners — Main burners are factory set and should  
require no adjustment.  
Unit Preparation — Make sure that unit has been in-  
stalled in accordance with these installation instructions and  
applicable codes.  
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  
ensuring 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.)  
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.  
Refer to Table 30 for the correct orifice to use at high  
altitudes.  
Internal Wiring — Check all electrical connections in  
Table 30 — Altitude Compensation*  
unit control boxes. Tighten as required.  
74,000 AND 115,000  
150,000 BTUH  
BTUH NOMINAL  
NOMINAL INPUT  
INPUT  
Refrigerant Service Ports — To service refrigerant  
service ports, remove compressor access panel. Each unit sys-  
tem has 4 Schrader-type service gage ports: one on the suction  
line, one on the liquid line, and two on the compressor dis-  
charge line. Be sure that caps on the ports are tight. One  
Schrader-type valve is located under both the high-pressure  
switch and the low-pressure switch.  
ELEVATION  
Natural  
Gas  
Liquid  
Propane  
Orifice  
Size†  
Natural  
Gas  
Orifice  
Size†  
Liquid  
Propane  
Orifice  
Size†  
(ft)  
Orifice  
Size†  
0-2,000  
2,000  
33  
34  
35  
36  
36  
37  
37  
38  
39  
41  
43  
44  
44  
45  
43  
43  
44  
44  
44  
45  
45  
46  
47  
48  
48  
49  
49  
50  
30  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
38  
39  
40  
41  
42  
43  
43  
44  
44  
45  
45  
46  
47  
47  
3,000  
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.  
4,000  
5,000  
6,000  
7,000  
8,000  
9,000  
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.  
10,000  
11,000  
12,000  
13,000  
14,000  
2. Energize the compressor.  
3. The suction pressure should drop and the discharge pres-  
sure should rise, as is normal on any start-up.  
*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.  
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.  
3. Reverse any two of the unit power leads.  
4. Reapply power to the compressor.  
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 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.  
The suction and discharge pressure levels should now move  
to their normal start-up levels.  
4. The induced-draft motor will start.  
NOTE: When the compressor is rotating in the wrong direc-  
tion, the unit makes an elevated level of noise and does not  
provide cooling.  
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.  
Cooling — Set space thermostat to 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.  
6. The evaporator-fan motor will turn on 45 seconds after  
the burners are ignited.  
7. The evaporator-fan motor will turn off 45 seconds after  
thermostat temperature is satisfied.  
Check unit charge. Refer to Service, Refrigerant Charge  
section, page 39.  
8. Adjust airflow to obtain a temperature rise within the  
range specified on the unit nameplate.  
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.  
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.  
36  
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 temporarily shut unit off until space temperature falls  
below thermostat setting.  
fully open position or until the supply-air temperature drops  
below 52 F.  
When the supply-air temperature falls 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 moves to the fully closed position when  
using AUTO. fan or to the minimum position when using con-  
tinuous 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.  
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).  
Ventilation (Continuous Fan) — Set fan and system  
selector switches at ON and OFF positions, respectively. Evap-  
orator fan operates continuously to provide constant air circula-  
tion. 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  
continuously while the unit is in cooling. When the thermostat  
is satisfied, compressor contactor (C) is deenergized and the  
compressor and OFM shut off. After a 30-second delay, the  
IFM shuts off. If the thermostat fan selector switch is in the ON  
position, 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.  
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$er damper is maintained at its current position.  
3. If Y1 is energized, and the compressor is already ener-  
gized (see Step 2) and the room thermostat calls for Y2,  
the compressor contains to operate.  
4. If the compressor is energized and the thermostat is satis-  
fied, the compressor, the OFM, and IFM are deenergized  
and the EconoMi$er modulates closed.  
When the 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  
When the OAT is below the MECH CLG LOCKOUT set  
point, the compressors remain off.  
37  
HEATING, UNITS WITH ECONOMIZER — When the  
thermostat calls for heating, terminal W1 is energized. To pre-  
vent thermostat short-cycling, the unit is locked into the Heat-  
ing 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 and the damper  
moves to the minimum position. On units equipped for two  
stages of heat, when additional heat is needed, W2 energized  
and the high-fire solenoid on the main gas valve (MGV) is en-  
ergized. When the thermostat is satisfied and W1 is deener-  
gized, 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 min-  
imum position.  
6. Use a water hose or other suitable equipment to flush  
down between the 2 coil sections to remove dirt and  
debris. Clean the outer surfaces with a stiff brush in the  
normal manner.  
7. Secure inner and outer coil rows together with a field-  
supplied fastener.  
8. Reposition the outer coil section and remove the coil cor-  
ner post from between the top panel and center post. Re-  
install the coil corner post and replace all screws.  
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.  
SERVICE  
OUTDOOR-AIR INLET SCREEN — Clean screen with  
steam or hot water and a mild detergent. Do not use disposable  
filters in place of screen.  
BELTS — Check belt tension at least once each heating or  
cooling season or as conditions require.  
When servicing unit, shut off all electrical power to unit  
and install lockout tag to avoid shock hazard or injury from  
rotating parts.  
Cleaning — Inspect unit interior at the beginning of  
heating and cooling season and as operating conditions  
require.  
EVAPORATOR COIL  
1. Turn unit power off and install lockout tag. Remove  
evaporator coil access panel.  
2. If economizer or two-position damper is installed, re-  
move economizer by disconnecting Molex plug and re-  
moving mounting screws. Refer to accessory economizer  
installation instructions or Optional Economizer sections  
on pages 12 and 14 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.  
Fig. 42 — Cleaning Condenser Coil  
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 Coils (Size 004) — Wash coil with commercial  
coil cleaner. It is not necessary to remove top panel.  
2-Row Coils (Sizes 005-007)  
Clean coil as follows:  
1. Turn off unit power and install lockout tag.  
2. Remove top panel screws on condenser end of unit.  
3. Remove condenser coil corner post. See Fig. 42. To hold  
top panel open, place coil corner post between top panel  
and center post. See Fig. 43.  
4. Remove screws securing coil to compressor plate and  
compressor access panel.  
5. Remove fastener holding coil sections together at return  
end of condenser coil. Carefully separate the outer coil  
section 3 to 4 in. from the inner coil section. See Fig. 44.  
Fig. 43 — Propping Up Top Panel  
38  
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. 46-49, 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. 48)  
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 F  
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 psig  
Suction Temperature should be . . . . . . . . . . . . . . . . . . . . . 76 F  
(Suction Temperature may vary 5 F.)  
Fig. 44 — Separating Coil Sections  
Lubrication  
Flue Gas Passageways — To inspect the flue collec-  
tor box and upper areas of the heat exchanger:  
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 required.  
No lubrication of condenser or evaporator fan motors is  
required.  
1. Remove the combustion blower wheel and motor assem-  
bly according to directions in Combustion-Air Blower  
section on page 42.  
2. Remove the flue cover to inspect the heat exchanger.  
3. Clean all surfaces as required using a wire brush.  
Manual Outdoor-Air Damper — If outdoor-air damper  
blade adjustment is required, see Manual Outdoor-Air Damper  
section on page 11.  
Economizer Adjustment — Refer to Optional Econo-  
mizer sections on page 12 and 14.  
Condenser-Fan Adjustment (Fig. 45) — Shut off  
unit power supply. Remove condenser-fan assembly (grille,  
motor, and fan) and loosen fan hub setscrews. Adjust fan  
height as shown in Fig. 45. Tighten setscrews and replace  
condenser-fan assembly.  
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.  
Fig. 45 — Condenser-Fan Adjustment  
39  
3 TON UNIT CHARGING CHART  
SUCTION LINE TEMPERATURE (DEG. C)  
-7  
-1  
4
10  
16  
21  
27  
OUTDOOR  
TEMP  
F
C
52  
100  
90  
80  
70  
60  
50  
40  
30  
689  
621  
552  
483  
414  
345  
276  
207  
125  
115  
105  
95  
46  
41  
35  
29  
24  
18  
13  
7
85  
75  
65  
55  
45  
20  
30  
40  
50  
60  
70  
80  
SUCTION LINE TEMPERATURE (DEG. F)  
Fig. 46 — Cooling Charging Chart, 48TF004  
4 TON UNIT CHARGING CHART  
SUCTION LINE TEMPERATURE (DEG. C)  
OUTDOOR  
TEMP  
-7  
-1  
4
10  
16  
21  
27  
F
C
125  
115  
52  
100  
90  
80  
70  
60  
50  
40  
30  
689  
621  
552  
483  
414  
345  
276  
207  
46  
105  
95  
41  
35  
29  
85  
24  
18  
13  
75  
65  
55  
45  
7
20  
30  
40  
50  
60  
70  
80  
SUCTION LINE TEMPERATURE (DEG. F)  
Fig. 47 — Cooling Charging Chart, 48TF005  
40  
5 TON UNIT CHARGING CHART  
SUCTION LINE TEMPERATURE (DEG. C)  
OUTDOOR  
TEMP  
-7  
-1  
4
10  
16  
21  
27  
F
C
52  
125  
115  
105  
95  
100  
90  
80  
70  
60  
50  
40  
30  
689  
621  
552  
483  
414  
345  
276  
207  
46  
41  
35  
29  
85  
75  
65  
24  
18  
55  
45  
13  
7
20  
30  
40  
50  
60  
70  
80  
SUCTION LINE TEMPERATURE (DEG. F)  
Fig. 48 — Cooling Charging Chart, 48TF006  
6 TON UNIT (60 Hz) CHARGING CHART  
SUCTION LINE TEMPERATURE (DEG. C)  
-7  
-1  
4
10  
16  
21  
27  
100  
90  
80  
70  
60  
50  
40  
30  
689  
621  
552  
483  
414  
345  
276  
207  
OUTDOOR  
TEMP  
F
125  
115  
105  
95  
C
52  
46  
41  
35  
29  
24  
18  
13  
7
85  
75  
65  
55  
45  
20  
30  
40  
50  
60  
70  
80  
SUCTION LINE TEMPERATURE (DEG. F)  
Fig. 49 — Cooling Charging Chart, 48TF007  
41  
Combustion-Air Blower — Clean periodically to  
assure 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.  
Main Burners — To access burners, remove burner ac-  
cess panel and slide out burner partition. 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.  
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:  
When working on gas train, do not hit or plug orifice  
spuds.  
1. Slide burner access panel out.  
2. Remove the 7 screws that attach induced-draft motor  
housing to vestibule plate (Fig. 50).  
REMOVAL AND REPLACEMENT OF GAS TRAIN  
(Fig. 50-52)  
1. Shut off manual gas valve.  
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 mo-  
tor to mounting plate. Remove the motor cooling fan by  
removing one setscrew. Then remove nuts that hold mo-  
tor to mounting plate.  
2. Shut off power to unit.  
3. Slide out burner partition.  
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. 11).  
7. Remove the 2 screws that attach the burner rack to the  
vestibule plate (Fig. 50).  
6. To reinstall, reverse the procedure outlined above.  
8. Slide the burner tray out of the unit (Fig. 51).  
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. 52.  
5. Reinstall burners on rack.  
6. Reinstall burner rack as described in Removal and Re-  
placement of Gas Train section, above.  
Limit Switch — Remove blower access panel (Fig. 7).  
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. 11). 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.  
Replacement Parts — A complete list of replacement  
parts may be obtained from any Carrier distributor upon  
request.  
If lockout occurs, unit may be reset by interrupting power  
supply to unit for at least 5 seconds.  
Table 31 — LED Error Code Description  
LED INDICATION  
ON  
ERROR CODE DESCRIPTION  
Normal Operation  
INDUCED-  
DRAFT  
ROLLOUT  
SWITCH  
OFF  
Hardware Failure  
MOTOR  
MOUNTING  
PLATE  
1 Flash†  
2 Flashes  
3 Flashes  
4 Flashes  
5 Flashes  
6 Flashes  
7 Flashes  
8 Flashes  
Evaporator Fan On/Off Delay Modified  
Limit Switch Fault  
Flame Sense Fault  
4 Consecutive Limit Switch Faults  
Ignition Lockout Fault  
BURNER  
SECTION  
Induced-Draft Motor Fault  
Rollout Switch Fault  
FLUE  
EXHAUST  
Internal Control Fault  
VESTIBULE  
PLATE  
INDUCED-  
DRAFT  
MOTOR  
LEGEND  
BLOWER  
HOUSING  
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.  
MANIFOLD  
PRESSURE  
TAP  
GAS  
VALVE  
†Indicates a code that is not an error. The unit will continue to oper-  
ate when this code is displayed.  
Fig. 50 — Burner Section Details  
IMPORTANT: Refer to Troubleshooting Tables 32-36 for addi-  
tional information.  
42  
Fig. 51 — Burner Tray Details  
LOW HEAT  
48TFE004, 48TFD005-007 — 74,000 BTUH INPUT  
48TFM004, 48TFL005-006 — 60,000 BTUH INPUT  
MEDIUM AND HIGH HEAT  
48TFE005-007, 48TFF004 — 115,000 BTUH INPUT  
48TFF005-007 — 150,000 BTUH INPUT  
48TFN004, 48TFM005-006 — 90,000 BTUH INPUT  
48TFN005-006 — 120,000 BTUH INPUT  
Fig. 52 — Spark Adjustment  
43  
TROUBLESHOOTING  
Table 32 — LED Error Code Service Analysis  
CAUSE  
PROBLEM  
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.  
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 trips.  
(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 name-  
plate 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 termi-  
nated. Verify that unit is obtaining proper amount of gas.  
Induced-draft motor fault. IGC does not sense that induced-draft motor is  
Check for proper voltage. If motor is operating, check the  
speed sensor plug/IGC Terminal J2 connection. Proper con-  
nection: PIN 1 — White, PIN 2 — Red, PIN 3 — Black.  
(LED 6 flashes)  
operating.  
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 soft-  
ware or hardware.  
If error code is not cleared by resetting unit power, replace the  
IGC.  
IMPORTANT: Refer to Table 19 — Heating Service Analysis  
for additional troubleshooting analysis.  
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.  
LEGEND  
IGC — Integrated Gas Unit Controller  
LED — Light-Emitting Diode  
Table 33 — Heating Service Analysis  
PROBLEM  
CAUSE  
Misaligned spark electrodes.  
No gas at main burners.  
REMEDY  
Burners will not ignite.  
Check flame ignition and sensor electrode positioning. Adjust as needed.  
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.  
Check power supply, fuses, wiring, and circuit breaker.  
No power to furnace.  
No 24 v power supply to control circuit.  
Check transformer. Transformers with internal overcurrent protection  
require a cool down period before resetting.  
Miswired or loose connections.  
Check all wiring and wire nut connections.  
Burned-out heat anticipator in thermostat. Replace thermostat.  
Broken thermostat wires.  
Dirty air filter.  
Run continuity check. Replace wires, if necessary.  
Inadequate heating.  
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.  
Restricted airflow.  
Replace with proper unit or add additional unit.  
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.  
Too much outdoor air.  
Check rotation of blower, thermostat heat anticipator settings, and tem-  
perature rise of unit. Adjust as needed.  
Adjust minimum position.  
Check economizer operation.  
Poor flame characteristics. Incomplete combustion (lack of combus- Check all screws around flue outlets and burner compartment. Tighten  
tion air) results in:  
as necessary.  
Aldehyde odors, CO, sooting flame, or  
floating flame.  
Cracked heat exchanger.  
Overfired unit — reduce input, change orifices, or adjust gas line or man-  
ifold pressure.  
Check vent for restriction. Clean as necessary.  
Check orifice to burner alignment.  
Burners will not turn off.  
Unit is locked into Heating mode for a one Wait until mandatory one minute time period has elapsed or re-  
minute minimum. set power to unit.  
44  
Table 34 — Cooling Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Compressor and condenser fan Power failure.  
Call power company.  
will not start.  
Fuse blown or circuit breaker tripped.  
Replace fuse or reset circuit breaker.  
Replace component.  
Defective thermostat, contactor, transformer, or  
control relay.  
Insufficient line voltage.  
Incorrect or faulty wiring.  
Thermostat setting too high.  
Determine cause and correct.  
Check wiring diagram and rewire correctly.  
Lower thermostat setting below room temperature.  
Compressor will not start but  
condenser fan runs.  
Faulty wiring or loose connections in compressor Check wiring and repair or replace.  
circuit.  
Compressor motor burned out, seized, or internal Determine cause. Replace compressor.  
overload open.  
Defective run/start capacitor, overload, 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.  
Insufficient line voltage.  
Blocked condenser.  
Replace and determine cause.  
Determine cause and correct.  
Determine cause and correct.  
Determine cause and replace.  
Defective run/start capacitor, overload, or start  
relay.  
Defective thermostat.  
Replace thermostat.  
Faulty condenser-fan motor or capacitor.  
Restriction in refrigerant system.  
Dirty air filter.  
Replace.  
Locate restriction and remove.  
Replace filter.  
Compressor operates  
continuously.  
Unit undersized for load.  
Thermostat set too low.  
Low refrigerant charge.  
Leaking valves in compressor.  
Air in system.  
Decrease load or increase unit size.  
Reset thermostat.  
Locate leak; repair and recharge.  
Replace compressor.  
Recover refrigerant, evacuate system, and recharge.  
Clean coil or remove restriction.  
Replace filter.  
Condenser coil dirty or restricted.  
Dirty air filter.  
Excessive head pressure.  
Dirty condenser coil.  
Clean coil.  
Refrigerant overcharged.  
Air in system.  
Recover excess refrigerant.  
Recover refrigerant, evacuate system, and recharge.  
Determine cause and correct.  
Check for leaks; repair and recharge.  
Replace compressor.  
Condenser air restricted or air short-cycling.  
Low refrigerant charge.  
Compressor valves leaking.  
Restriction in liquid tube.  
High head load.  
Head pressure too low.  
Remove restriction.  
Excessive suction pressure.  
Suction pressure too low.  
Check for source and eliminate.  
Replace compressor.  
Compressor valves leaking.  
Refrigerant overcharged.  
Dirty air filter.  
Recover excess refrigerant.  
Replace filter.  
Low refrigerant charge.  
Metering device or low side restricted.  
Insufficient evaporator airflow.  
Check for leaks; repair and recharge.  
Remove source of restriction.  
Increase air quantity. Check filter and replace if  
necessary.  
Temperature too low in conditioned area.  
Outdoor ambient below 25 F.  
Reset thermostat.  
Install low-ambient kit.  
Wait for 30-second off delay.  
Evaporator fan will not shut off.  
Time off delay not finished.  
Compressor makes excessive  
noise (48TF007 scroll only).  
Compressor rotating in wrong direction.  
Reverse the 3-phase power leads as described in the  
Start-Up section on page 36.  
45  
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 wir-  
ing (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 D18.  
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 econo-  
mizer control board (yellow wire). If 24 vac power is not present, replace the  
economizer control board.  
Economizer motor failure.  
OAT or EC set too high.  
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.  
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 1. Perform the following tests when OAT or EC is closed, Y1 is called for and  
is correctly wired and works  
properly.  
damper is at minimum position. Confirm 24 vac on gray terminal of the econ-  
omizer 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 D19.  
Verify economizer control board 1. After verifying that the wiring is correct, modulate the damper to the minimum  
is functioning properly.  
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, replace the economizer cir-  
cuit 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 of 18 vdc is  
present and the motor is still not operating, replace the motor.  
Economizer damper does Verify that close-on-power-loss  
not 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 disconnected from unit. If 14 vdc is  
not present, replace the control board.  
LEGEND  
C1  
EC  
— Common Power  
— Enthalpy Control  
IFC — Indoor (Evaporator) Fan Contactor  
IFO — Indoor (Evaporator) Fan On  
OAT — Outdoor-Air Thermostat  
PL  
— Plug  
SAT — Supply-Air Thermostat  
SW — Economizer Position Switch  
46  
Table 36 — EconoMi$er Troubleshooting  
PROBLEM  
CAUSE  
REMEDY  
Damper does not open.  
Indoor (evaporator) fan is Off.  
Check to ensure that 24 vac is present at terminal C1 (Common Power) on the  
IFC (Indoor Evaporator Fan Contactor) or that 24 vac is present at the IFO  
(Indoor Evaporator Fan On) terminal. Check whether 24 vac is present at PL  
(Plug) 6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check  
wiring (see unit label diagram).  
Check proper thermostat connection to G on the connection board.  
No power to EconoMi$er  
controller.  
Check to ensure that 24 vac is present across Terminals 24 VAC and 24V COM  
on the EconoMi$er control. If 24 vac is not present, check wiring (see unit label  
diagram). If 24 vac is present, STATUS light should be on constantly.  
No power to G terminal.  
Controller fault.  
If IFM is on, check to ensure 24 vac is present on G terminal of the EconoMi$er  
controller. If 24 vac is not present, check wiring (see unit label diagram).  
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.  
Actuator fault.  
If STATUS light is flashing two flashes, the EconoMi$er controller senses the  
thermostat is wired incorrectly. Check wiring between the thermostat and the  
connection board in the electrical panel. The fault condition is caused by Y2  
being energized before Y1.  
Check the wiring between the EconoMi$er controller and the actuator.  
Hold CONFIG button between three and ten seconds to verify the actuator’s  
operation. (This process takes three 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 If STATUS light is flashing four flashes, the Supply-Air Temperature Sensor is  
faulty.  
faulty. Check wiring or replace sensor.  
OAT Sensor faulty  
If STATUS light is flashing five flashes, the OAT 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$er is operating correctly.  
CO Ventilation Strategy  
If CO sensor is being used, and the damper position is greater than minimum  
position, the ventilation control strategy is controlling. Refer to the Start-Up  
instructions. EconoMi$er is operating correctly.  
2
2
Damper does not return  
to minimum position.  
controlling  
Damper does not close  
on power loss.  
Damper travel is restricted.  
Check to ensure the damper is not blocked.  
LEGEND  
OAT — Outdoor-Air Temperature  
47  
Fig. 53 — Typical Wiring Diagram and Component Arrangement  
48  
LEGEND FOR FIG. 53 — TYPICAL WIRING SCHEMATIC AND COMPONENT ARRANGEMENT  
IMPORTANT: Refer to unit wiring label for actual unit wiring  
information.  
RS  
—
—
—
—
—
—
—
—
—
—
Rollout Switch  
Supply Air Thermostat  
Sensor  
Switch Fully Open  
Switch Fully Closed  
Switch Min. Vent Position  
Switch Max. Vent Position  
Thermostat-Cooling  
Time-Delay Relay  
Thermostat-Heating  
AHA  
C
CAP  
CC  
— Adjustable Heat Anticipator  
— Contactor, Compressor  
— Capacitor  
SAT  
SEN  
SW1  
SW2  
SW3  
SW4  
TC  
— Cooling Compensator  
COMP — Compressor Motor  
D
EC  
— Diode  
— Enthalpy Control  
ECON — Economizer  
TDR  
TH  
EPS  
— Emergency Power Supply  
(Nine Volt Battery)  
TRAN — Transformer  
EQUIP — Equipment  
ER  
FPT  
FU  
— Economizer Relay  
Field Splice  
— Freeze Up Protection Thermostat  
— Fuse  
Marked Wire  
GND  
HPS  
HS  
— Ground  
Terminal (Marked)  
— High-Pressure Switch  
— Hall-Effect Sensor  
— Ignitor  
Terminal (Unmarked)  
Terminal Block  
Splice  
I
IDM  
IFC  
IFM  
IGC  
LPS  
LS  
— Induced-Draft Motor  
— Indoor Fan Contactor  
— Indoor (Evaporator) Fan Motor  
— Integrated Gas Unit Controller  
— Low-Pressure/Loss-of-Charge Switch  
— Limit Switch  
— Main Gas Valve  
— Motor  
— Outdoor-Air Thermostat  
— Outdoor (Condenser) Fan Motor  
— Overload Relay  
Splice (Marked)  
Factory Wiring  
MGV  
MTR  
OAT  
OFM  
OLR  
PL  
Field Control Wiring  
Field Power Wiring  
Accessory or Optional Wiring  
To indicate common potential only;  
not to represent wiring.  
— Plug Assembly  
— Quadruple Terminal  
— Relay  
QT  
R
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 (ORN) and connect to 208-v tap (RED). Insulate end of 230-v tap.  
49  
Copyright 2000 Carrier Corporation  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 534-80000 Printed in U.S.A. Form 48TF-1SI Pg 50 8-00 Replaces: New  
Book 1  
4
Tab 1a 6a  
START-UP CHECKLIST  
(Remove and Use in Job File)  
I. PRELIMINARY INFORMATION:  
MODEL NO.: _________________________________  
DATE: _______________________________________  
SERIAL NO.: ______________________________________  
TECHNICIAN: ____________________________________  
BUILDING LOCATION: _____________________________  
II. PRE-START-UP (insert checkmark in box as each item is completed)  
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT  
REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS  
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS  
VERIFY THAT FLUE HOOD IS INSTALLED  
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS  
CHECK TO ENSURE NO WIRES ARE TOUCHING REFRIGERANT TUBING OR SHARP EDGES  
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  
VERIFY PULLEY ALIGNMENT AND BELT TENSION ARE CORRECT  
III. START-UP:  
ELECTRICAL  
SUPPLY VOLTAGE  
COMPRESSOR AMPS  
INDOOR-FAN AMP  
L1-L2 _________  
L2-L3  
L2  
__________  
__________  
__________  
L3-L1 __________  
L1  
L1  
_________  
_________  
L3  
L3  
__________  
__________  
L2  
TEMPERATURES  
OUTDOOR-AIR TEMPERATURE  
RETURN-AIR TEMPERATURE  
COOLING SUPPLY AIR  
__________ DB _________ WB  
__________ DB _________ WB  
__________ DB _________ WB  
__________ DB  
GAS HEAT SUPPLY AIR  
PRESSURES  
GAS INLET PRESSURE  
GAS MANIFOLD PRESSURE  
REFRIGERANT SUCTION  
__________ IN. WG  
__________ IN. WG (LOW FIRE)  
__________ PSIG  
________  
IN. WG (HI FIRE)  
TEMP ° F  
________  
________  
REFRIGERANT DISCHARGE __________ PSIG  
TEMP ° F  
VERIFY REFRIGERANT CHARGE USING CHARGING TABLES  
VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN CORRECT DIRECTION (48TF007 ONLY)  
Copyright 2000 Carrier Corporation  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Book  
1
4
PC 111  
Catalog No. 534-80000  
Printed in U.S.A.  
Form 48TF-1SI  
Pg CL-1  
8-00  
Replaces: New  
Tab  
1a 6a  

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