Carrier 48HJD005 007 User Manual

48HJD005-007, 48HJE/HJF004-007  
48HJL/HJM/HJN/HJG/HJH/HJK004-006 (LOW NOx)  
Single-Package Rooftop Heating/Cooling  
Installation, Start-Up and  
Service Instructions  
CONTENTS  
Page  
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28  
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1  
• ROOF CURB  
Disconnect gas piping from unit when leak  
1
testing at pressure greater than /2 psig. Pres-  
sures greater than 1/2 psig will cause gas valve  
damage resulting in hazardous condition. If  
gas valve is subjected to pressure greater than  
1/2 psig, it must be replaced before use. When  
pressure testing field-supplied gas piping at  
• SLAB MOUNT  
Step 2 — Field Fabricate Ductwork. . . . . . . . . . . . . . . 3  
Step 3 — Install External Trap for  
Condensate Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 3  
• POSITIONING  
Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . 4  
Step 7 — Make Electrical Connections . . . . . . . . . . . 4  
• FIELD POWER SUPPLY  
• FIELD CONTROL WIRING  
• HEAT ANTICIPATOR SETTINGS  
Step 8 — Adjust Factory-Installed Options . . . . . . . 8  
• MOISTUREMISER DEHUMIDIFCATION  
PACKAGE  
• APOLLO CONTROL  
• DISCONNECT SWITCH  
1
pressures of /2 psig or less, a unit connected  
to such piping must be isolated by manually  
closing the gas valve(s).  
INSTALLATION  
Unit is shipped in the vertical discharge configuration. To  
convert to horizontal discharge application, remove duct open-  
ing covers. Using the same screws, install covers on duct open-  
ings in basepan of unit with insulation-side down. Seals around  
openings must be tight.  
NOTE: Any combination of supply and return ducting is per-  
missible, i.e., vertical supply combined with horizontal return.  
• OPTIONAL DURABLADE ECONOMIZER  
• OPTIONAL ECONOMI$ER  
Step 1 — Provide Unit Support  
ROOF CURB — Assemble and install accessory roof curb in  
accordance with instructions shipped with curb. See Fig. 1. In-  
stall insulation, cant strips, roofing felt, and counter flashing as  
shown. Ductwork must be attached to curb, not to the unit.  
If electric control power or gas service is to be routed through  
the basepan, attach the accessory thru-the-bottom service con-  
nections to the basepan in accordance with the accessory instal-  
lation instructions. Connections must be installed before unit is  
set on roof curb.  
Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . 19  
• BELT-DRIVE MOTORS  
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-32  
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-38  
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 39-45  
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1  
SAFETY CONSIDERATIONS  
Installation and servicing of air-conditioning equipment can  
be hazardous due to system pressure and electrical compo-  
nents. Only trained and qualified service personnel should  
install, repair, or service air-conditioning equipment.  
Untrained personnel can perform basic maintenance func-  
tions of cleaning coils and filters and replacing filters. All other  
operations should be performed by trained service personnel.  
When working on air-conditioning equipment, observe precau-  
tions in the literature, tags and labels attached to the unit, and  
other safety precautions that may apply.  
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. 1. Improperly  
applied gasket can result in air leaks and poor unit  
performance.  
Curb should be level. Unit leveling tolerances are shown in  
Fig. 2. This is necessary for unit drain to function properly. Re-  
fer to Accessory Roof Curb Installation Instructions for addi-  
tional information as required.  
Follow all safety codes. Wear safety glasses and work  
gloves. Use quenching cloth for unbrazing operations. Have  
fire extinguishers available for all brazing operations.  
SLAB MOUNT (Horizontal Units Only) — Provide a level  
concrete slab that extends a minimum of 6 in. beyond unit cab-  
inet. Install a gravel apron in front of condenser-coil air inlet to  
prevent grass and foliage from obstructing airflow.  
NOTE: Horizontal units may be installed on a roof curb if  
required.  
Before performing service or maintenance operations on  
unit, turn off main power switch to unit and install lockout  
tag. Ensure electrical service to rooftop unit agrees with  
voltage and amperage listed on the unit rating plate. Elec-  
trical shock could cause personal injury.  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 534-767 Printed in U.S.A. Form 48HJ-18SI Pg 1 9-00 Replaces: 48HJ-17SI  
Book 1  
4
Tab 1a 6a  
MAXIMUM ALLOWABLE  
DIFFERENCE (in.)  
CONDENSATE PAN (SIDE VIEW)  
DRAIN PLUG  
A-B  
0.5  
B-C  
1.0  
A-C  
1.0  
NOTE: Drain plug is shown in factory-installed position.  
Fig. 3 — Condensate Drain Pan  
Fig. 2 — Unit Leveling Tolerances  
reference. See Table 1 and Fig. 4 for additional information.  
Operating weight is shown in Table 1 and Fig. 4.  
Lifting holes are provided in base rails as shown in Fig. 5.  
Refer to rigging instructions on unit.  
Step 2 — Field Fabricate Ductwork — Secure all  
ducts to roof curb and building structure on vertical discharge  
units. Do not connect ductwork to unit. For horizontal applica-  
tions, field-supplied isolation flanges should be attached to hor-  
izontal discharge openings and all ductwork should be secured  
to the flanges. Insulate and weatherproof all external ductwork,  
joints, and roof openings with counter flashing and mastic in  
accordance with applicable codes.  
Ducts passing through an unconditioned space must be in-  
sulated and covered with a vapor barrier.  
If a plenum return is used on a vertical unit, the return  
should be ducted through the roof deck to comply with applica-  
ble fire codes.  
All panels must be in place when rigging and lifting.  
POSITIONING — Maintain clearance around and above unit  
to provide minimum distance from combustible materials, prop-  
er airflow, and service access. See Fig. 5. A properly positioned  
unit will have the following clearances between unit and roof  
curb; 1/4-in. clearance between roof curb and base rails on each  
side and duct end of unit; 1/4 in. clearance between roof curb and  
condenser coil end of unit. (See Fig. 1, section C-C.)  
Do not install unit in an indoor location. Do not locate unit  
air inlets near exhaust vents or other sources of contaminated  
air.  
A minimum clearance is not required around ductwork.  
Cabinet return-air static shall not exceed –.35 in. wg with  
Durablade economizer, or –.30 in. wg with EconoMi$er, or  
–.45 in. wg without economizer.  
Be sure that unit is installed such that snow will not block  
the combustion intake or flue outlet.  
Unit may be installed directly on wood flooring or on Class  
A, B, or C roof-covering material when roof curb is used.  
These units are designed for a minimum continuous return-  
air temperature in heating of 50 F (dry bulb), or an intermittent  
operation down to 45 F (dry bulb), such as when used with a  
night setback thermostat.  
Although unit is weatherproof, guard against water from  
higher level runoff and overhangs.  
Locate mechanical draft system flue assembly at least 48 in.  
from any opening through which combustion products could  
enter the building, and at least 48 in. from an adjacent building.  
When unit is located adjacent to public walkways, flue assem-  
bly must be at least 7 ft above grade.  
Step 3 — Install External Trap for Condensate  
Drain — The unit’s 3/4-in. condensate drain connections are  
located on the bottom and side of the unit. Unit discharge  
connections do not determine the use of drain connections;  
either drain connection can be used with vertical or horizontal  
applications.  
When using the standard side drain connection, ensure the  
plug (Red) in the alternate bottom connection is tight before in-  
stalling the unit.  
NOTE: When unit is equipped with an accessory flue dis-  
charge deflector, allowable clearance is 18 inches.  
Flue gas can deteriorate building materials. Orient unit such  
that flue gas will not affect building materials.  
To use the bottom drain connection for a roof curb installa-  
tion, relocate the factory-installed plug (Red) from the bottom  
connection to the side connection. See Fig. 3. The piping for  
the condensate drain and external trap can be completed after  
the unit is in place.  
All units must have an external trap for condensate drain-  
age. Install a trap 4-in. deep and protect against freeze-up. If  
drain line is installed downstream from the external trap, pitch  
the line away from the unit at 1 in. per 10 ft of run. Do not use a  
pipe size smaller than the unit connection (3/4 in.).  
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), ANSI (Ameri-  
can National Standards Institute) Z223.1-1984 and addendum  
Z223.1a-1987. In Canada, installation must be in accordance  
with the CAN1.B149.1 and CAN1.B149.2 installation codes  
for gas burning appliances.  
Flue vent discharge must have a minimum horizontal clear-  
ance of 4 ft from electric and gas meters, gas regulators, and  
gas relief equipment.  
After unit is in position, remove shipping materials and rig-  
ging skids.  
Step 4 — Rig and Place Unit — Inspect unit for  
transportation damage, and file any claim with transportation  
agency. Keep unit upright and do not drop. Spreader bars are  
not required if top crating is left on unit, and rollers may be  
used to move unit across a roof. Level by using unit frame as a  
3
NOTES:  
MAX  
“A”  
“B”  
in. mm  
“C”  
in. mm  
1. Place unit on curb as close as possible to the duct end.  
2. Dimension in ( ) is in millimeters.  
UNIT  
48HJ  
WEIGHT  
lb kg  
in.  
mm  
3. Hook rigging shackles through holes in base rail as shown in  
detail ‘‘A.’ Holes in base rails are centered around the unit cen-  
ter of gravity. Use wooden top skid when rigging to prevent rig-  
ging straps from damaging unit.  
4. Weights include base unit without economizer. See Table 1 for  
unit operating weights with accessory economizer.  
004  
005  
006  
007  
530 240 73.69 1872 35.50 902 33.31 847  
540 245 73.69 1872 35.50 902 33.31 847  
560 254 73.69 1872 35.50 902 33.31 847  
615 279 73.69 1872 35.50 902 33.31 847  
All panels must be in place when rigging.  
Fig. 4 — Rigging Details  
Step 5 — Install Flue Hood — Flue hood is shipped  
screwed to the burner compartment access panel. Remove  
from shipping location and, using screws provided, install flue  
hood in location shown in Fig. 5 and 6.  
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 (National Fire Protection Associa-  
tion), latest edition, and local electrical codes. Do not use  
gas piping as an electrical ground. Failure to follow this  
warning could result in the installer being liable for per-  
sonal injury of others.  
For units being installed in California Air Quality Manage-  
ment Districts which require NOx emissions of 40 nanograms/  
joule or less, kit CRLOWNOX001A00 must be installed.  
Step 6 — Install Gas Piping — Unit is equipped for  
use with type of gas shown on nameplate. Refer to local  
building codes, or in the absence of local codes, to  
ANSI Z223.1-1984 and addendum Z223.1A-1987 entitled  
National Fuel Gas Code. In Canada, installation must be in  
accordance with the CAN1.B149.1 and CAN1.B149.2 instal-  
lation 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 in. wg  
while the unit is operating. On 48HJ005-007 high-heat units,  
the gas pressure at unit gas connection must not be less than  
5 in. wg or greater than 13 in. wg while the unit is operating.  
For propane applications, the gas pressure must not be less than  
5 in. wg or greater than 13 in. wg at the unit connection.  
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  
from the 230-v terminal on the transformer and connecting it to  
the 200-v terminal from the transformer.  
Refer to unit label diagram for additional information.  
Pigtails are provided for field service. Use factory-supplied  
splices or UL (Underwriters’ Laboratories) approved copper  
connector.  
When installing units, provide a disconnect per NEC.  
All field wiring must comply with NEC and local  
requirements.  
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. 7. For ex-  
ample, a 3/4-in. gas pipe must have one field-fabricated support  
beam every 8 ft. Therefore, an 18-ft long gas pipe would have a  
minimum of 3 support beams, and a 48-ft long pipe would  
have a minimum of 6 support beams.  
See Fig. 7 for typical pipe guide and locations of external  
manual gas shutoff valve.  
4
Table 1 — Physical Data  
BASE UNIT 48  
HJE/F/H/K/M/N004 HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006  
HJD/HJE/HJF007  
NOMINAL CAPACITY  
3
4
5
6
OPERATING WEIGHT (lb)  
Unit  
530  
564  
577  
548  
115  
540  
574  
587  
558  
115  
560  
594  
607  
578  
115  
615  
649  
662  
633  
115  
With Durablade Economizer  
With EconoMi$er  
With MoistureMiser Dehumidification Package  
Roof Curb  
COMPRESSOR  
Quantity  
Scroll  
R-22  
1
1
1
1
Oil (oz)  
42  
53  
50  
60  
REFRIGERANT TYPE  
Operating Charge (lb-oz)  
Standard Unit  
5- 8  
8-13  
8-6  
11-2  
10- 0  
12-13  
9-10  
13- 6  
Unit With MoistureMizer Dehumidification Package  
CONDENSER FAN  
Quantity...Diameter (in.)  
Nominal Cfm  
Propeller  
1...22  
3500  
1...22  
3500  
1..22  
4100  
1...22  
4100  
Motor Hp...Rpm  
1/4...825  
180  
1/4...825  
180  
1/4...1100  
320  
1/4...1100  
320  
Watts Input (Total)  
CONDENSER COIL  
Enhanced Copper Tubes, Aluminum Lanced Fins  
Standard Unit  
Rows...Fins/in.  
1...17  
14.6  
2..17  
16.5  
2...17  
16.5  
2...17  
16.5  
Total Face Area (sq ft)  
Unit with MoistureMiser Dehumidification Package  
Rows...Fins/in.  
1...17  
3.9  
1...17  
3.9  
1...17  
3.9  
1...17  
3.9  
Total Face Area (sq ft)  
EVAPORATOR FAN  
Quantity...Size (in.)  
Nominal Cfm  
Centrifugal Type, Belt Drive  
1...10 x 10  
1200  
1...10 x 10  
1600  
1...10 x 10  
2000  
1...10 x 10  
2400  
Maximum Continuous Bhp  
Std  
Hi-Static  
Std  
1.20  
1.20  
1.30/2.40*  
2.90  
2.40  
2.40  
2.40  
2.90  
Motor Frame Size  
Fan Rpm Range  
48  
48  
48/56*  
56  
56  
Hi-Static  
Std  
56  
56  
56  
760-1090  
1075-1455  
Ball  
840-1185  
1075-1455  
Ball  
1020-1460/1120-1585*  
1120-1585  
1300-1685  
Ball  
Hi-Static  
1300-1685  
Ball  
Motor Bearing Type  
Maximum Fan Rpm  
2100  
2100  
2100  
2100  
Motor Pulley Pitch Diameter  
A/B (in.)  
Std  
Hi-Static  
Std  
1.9/2.9  
1.9/2.0  
2.4/3.4  
2.4/3.4  
2.8/3.8  
2.8/3.8  
3.4/4.4  
3.4/3.4  
1
1
5
5
Nominal Motor Shaft Diameter (in.)  
/
/
/
/
2
/
2
8
8
5
5
/
5
/
5
/
Hi-Static  
Std  
8
8
8
Fan Pulley Pitch Diameter (in.)  
Belt — Type...Length (in.)  
4.85  
4.0  
4.0  
4.0  
Hi-Static  
Std  
4.5  
4.0  
4.5  
4.5  
1...A...33  
1...A...33  
1....4...40  
1...A...38  
Hi-Static  
1...A...39  
1...A...39  
1...A...40  
1...A...40  
Pulley Center Line Distance (in.)  
Speed Change per Full Turn of  
Movable Pulley Flange (rpm)  
Movable Pulley Maximum Full  
Turns from Closed Position  
10.0-12.4  
10.0-12.4  
14.7-15.5  
14.7-15.5  
Std  
Hi-Static  
Std  
65  
65  
5
70  
65  
5
75  
60  
6
95  
60  
5
Hi-Static  
Std  
6
3
6
3
5
3
5
3
Factory Setting — Full Turns Open  
Hi-Static  
Std  
31/2  
890  
31/2  
980  
31/2  
1240  
31/2  
1304  
Factory Speed Setting (rpm)  
Hi-Static  
1233  
1233  
1396  
1396  
5
5
5
5
Fan Shaft Diameter at Pulley (in.)  
/
8
/
8
/
8
/
8
EVAPORATOR COIL  
Rows...Fins/in.  
Total Face Area (sq ft)  
Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Metering Device  
2...15  
5.5  
2...15  
5.5  
4...15  
5.5  
4...15  
5.5  
LEGEND  
*Single phase/three phase.  
†Indicates automatic reset.  
Bhp — Brake Horsepower  
**48HJD005-007 and 48HJE004 (72,000 Btuh heat input) units have 2 burners.  
48HJE005-007 and 48HJF004 (115,000 Btuh heat input) units and 48HJF005-  
007 (150,000 Btuh Heat input) units have 3 burners.  
††An LP kit is available as an accessory.  
||Three-phase standard models have heating inputs as shown. Single-phase  
standard models have one-stage heating with heating input values as follows:  
48HJE004, 48HJD005,006 — 72,000 Btuh  
48HJF004, 48HJE005,006 — 115,000 Btuh  
48HJF005,006 — 150,000 Btuh  
***California compliant three-phase models.  
†††California SCAQMD compliant low NOx models have combustion products that  
are controlled to 40 nanograms per joule or less.  
5
Table 1 — Physical Data (cont)  
BASE UNIT 48  
HJE/F/H/K/M/N004  
HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006  
HJD/HJE/HJF007  
FURNACE SECTION  
Rollout Switch Cutout Temp (F)†  
Burner Orifice Diameter (in. ...drill size)**  
Natural Gas — Std  
195  
195  
195  
195  
HJE .113...33  
HJF .113...33  
HJD .113...33  
HJE .113...33  
HJF .129...30  
HJD .113...33  
HJE .113...33  
HJF .129...30  
HJD .113...33  
HJE .113...33  
HJF .129...30  
HJH .113...33  
HJK .113...33  
HJG .113...33  
HJH .113...33  
HJK .129...30  
HJG .113...33  
HJH .113...33  
HJK .129...30  
HJM .102...38  
HJN .102...38  
HJL .102...38  
HJM .102...38  
HJN .116...32  
HJL .102...38  
HJM .102...38  
HJN .116...32  
Liquid Propane — Alt††  
HJE .089...43  
HJF .089...43  
HJD .089...43  
HJE .089...43  
HJF .102...38  
HJD .089...43  
HJE .089...43  
HJF .102...38  
HJD .089...43  
HJE .089...43  
HJF .102...38  
HJH .082...45  
HJK .082...45  
HJG .089...43  
HJH .089...43  
HJK .102...38  
HJG .089...43  
HJH .089...43  
HJK .102...38  
HJM .082...45  
HJN .082...45  
HJL .082...45  
HJM .082...45  
HJN .094...42  
HJL .082...45  
HJM .082...45  
HJN .094...42  
Thermostat Heat Anticipator Setting (amps) 208/230/460 v  
First Stage  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
.14  
Second Stage  
Gas Input (Btuh)  
First Stage/Second Stage  
HJE|| 50,000/ 72,000  
HJF|| 82,000/115,000  
HJD|| 50,000/ 72,000  
HJE|| 82,000/115,000  
HJF|| 120,000/150,000  
HJD|| 50,000/ 72,000  
HJE|| 82,000/115,000  
HJF|| 120,000/150,000  
HJD|| 50,000/ 72,000  
HJE|| 82,000/115,000  
HJF|| 120,000/150,000  
HJH*** —/ 72,000  
HJK***—/115,000  
HJG*** —/ 72,000  
HJH*** —/115,000  
HJK*** —/150,000  
HJG*** —/ 72,000  
HJH*** —/115,000  
HJK*** —/150,000  
HJM††† —/ 60,000  
HJN††† —/ 90,000  
HJL††† —/ 60,000  
HJM††† —/ 90,000  
HJN††† —/120,000  
HJL††† —/ 60,000  
HJM†††—/ 90,000  
HJN††† —/120,000  
Efficiency (Steady State) (%)  
HJE 82  
HJF 81  
HJD 82  
HJE 81  
HJF 80  
HJD 82  
HJE 81  
HJF 80  
HJD 82  
HJE 81  
HJF 80  
HJH 82  
HJK 81  
HJG 82  
HJH 81  
HJK 80  
HJG 82  
HJH 81  
HJK 80  
HJM 81  
HJN 81  
HJL 81  
HJM 81  
HJN 82  
HJL 81  
HJM 81  
HJN 82  
Temperature Rise Range  
HJE 15-45  
HJF 55-85  
HJD 15-45  
HJE 35-65  
HJF 50-80  
HJD 15-45  
HJE 35-65  
HJF 50-80  
HJD 15-45  
HJE 35-65  
HJF 50-80  
HJH 15-45  
HJK 55-85  
HJG 15-45  
HJH 35-65  
HJK 50-80  
HJG 15-45  
HJH 35-65  
HJK 50-80  
HJM 20-50  
HJN 30-60  
HJL 20-50  
HJM 30-60  
HJN 40-70  
HJL 20-50  
HJM 30-60  
HJN 40-70  
Manifold Pressure (in. wg)  
Natural Gas — Std  
3.5  
3.5  
3.5  
3.5  
3.5  
3.5  
1.0  
3.5  
3.5  
Liquid Propane — Alt††  
Maximum Static Pressure (in. wg)  
Field Gas Connection Size (in.)  
1.0  
1.0  
1.0  
1
1
1
1
/
2
/
2
/
2
/
2
HIGH-PRESSURE SWITCH (psig)  
Standard Compressor Internal Relief  
Cutout  
450 50  
428  
320  
Reset (Auto.)  
LOSS-OF-CHARGE SWITCH/LOW-PRESSURE  
SWITCH (Liquid LIne) (psig)  
Cutout  
7
22  
3
5
Reset (Auto.)  
FREEZE PROTECTION THERMOSTAT  
Opens (F)  
Closes (F)  
30  
45  
5
5
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  
*Single phase/three phase.  
†Indicates automatic reset.  
Bhp — Brake Horsepower  
**48HJD005-007 and 48HJE004 (72,000 Btuh heat input) units have 2 burners.  
48HJE005-007 and 48HJF004 (115,000 Btuh heat input) units and 48HJF005-  
007 (150,000 Btuh Heat input) units have 3 burners.  
††An LP kit is available as an accessory.  
||Three-phase standard models have heating inputs as shown. Single-phase  
standard models have one-stage heating with heating input values as follows:  
48HJE004, 48HJD005,006 — 72,000 Btuh  
48HJF004, 48HJE005,006 — 115,000 Btuh  
48HJF005,006 — 150,000 Btuh  
***California compliant three-phase models.  
†††California SCAQMD compliant low NOx models have combustion products that  
are controlled to 40 nanograms per joule or less.  
6
BOTTOM POWER CHART, THESE HOLES REQUIRED FOR  
USE WITH ACCESSORY PACKAGES — CRBTMPWR001A00  
THROUGH CRBTMPWR004A00  
STANDARD DURABLADE  
CORNER CORNER  
CORNER CORNER  
ECONOMI$ER  
WEIGHT  
UNIT  
ECONOMIZER  
WEIGHT  
WEIGHT  
(A)  
WEIGHT  
(B)  
WEIGHT  
(C)  
WEIGHT  
(D)  
UNIT  
48HJ  
WEIGHT  
Lb  
Kg  
240  
245  
254  
279  
Lb  
34  
34  
34  
34  
Kg  
Lb  
47  
47  
47  
47  
Kg  
Lb  
Kg  
Lb  
Kg  
Lb  
Kg  
Lb  
Kg  
THREADED  
WIRE  
USE  
REQURED  
CONDUIT SIZE  
HOLE SIZES (MAX.)  
004  
005  
006  
007  
530  
540  
560  
615  
15.4  
15.4  
15.4  
15.4  
21.3  
21.3  
21.3  
21.3  
127 57.6 122 55.3 138 62.6 143 64.9  
129 58.5 124 56.2 141 64.0 146 66.2  
134 60.8 129 58.5 146 66.2 151 68.5  
147 66.7 142 64.4 160 72.6 166 75.3  
1/2″  
3/4″  
11/4″  
1/2NPT  
3/4NPT  
24 V  
Power*  
Power*  
Gas†  
7/8[22.2]  
11/8[28.4]  
13/4[44.4]  
11/4[31.8]  
15/8[41.3]  
Gas†  
CONNECTION SIZES  
A
B
C
D
E
F
13/8Dia [35] Field Power Supply Hole  
2Dia [51] Power Supply Knockout  
13/4Dia [44] Charging Port Hole  
7/8Dia [22] Field Control Wiring Hole  
3/4-14 NPT Condensate Drain  
*Select either 3/4or 11/4for power, depending on wire size.  
†Select either 1/2or 3/4for gas depending on gas connection.  
NOTES:  
1. Dimensions in [ ] are in millimeters.  
5/8-14 NPT Gas Connection  
2. Center of gravity.  
G
21/2Dia [64] Power Supply Knockout  
3.  
Direction of airflow.  
4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal dis-  
charge units, field-supplied flanges should be attached to horizontal discharge openings, and all  
ductwork should be attached to the flanges.  
5. Minimum clearance (local codes or jurisdiction may prevail):  
a. Between unit, flue side and combustible surfaces, 48 inches. (18 in. when using accessory flue  
discharge deflector.)  
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 Electrical 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 surfaces, control box side, 42 in.  
per NEC.  
h. Horizontal supply and return end, 0 inches.  
6. With the exception of the clearance for the condenser coil and combustion side as stated in notes  
5a, b and c, a removable fence or barricade requires no clearance.  
7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering  
material if set on base rail.  
8. The vertical center of gravity is 1-6[457] up from the bottom of the base rail.  
Fig. 5 — Base Unit Dimensions — 48HJ004-007  
7
NOTE: If accessory thru-the-bottom connections and roof curb  
are used, refer to the Thru-the-Bottom Accessory Installation  
Instructions for information on power wiring and gas connec-  
tion piping. The power wiring, control wiring and gas piping  
can be routed through field-drilled holes in the basepan. The  
basepan is specially designed and dimpled for drilling the  
access connection holes.  
FIELD CONTROL WIRING — Install a Carrier-approved  
accessory thermostat assembly according to installation in-  
structions included with the accessory. Locate thermostat  
assembly on a solid wall in the conditioned space to sense aver-  
age temperature in accordance with thermostat installation  
instructions.  
Route thermostat cable or equivalent single leads of colored  
wire from subbase terminals through connector on unit to low-  
voltage connections (shown in Fig. 9).  
Connect thermostat wires to matching screw terminals of  
low-voltage connection board. See Fig. 9.  
Fig. 6 — Flue Hood Details  
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American  
Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft,  
use no. 16 AWG insulated wire (35 C minimum). For over  
75 ft, use no. 14 AWG insulated wire (35 C minimum). All  
wire larger than no. 18 AWG cannot be directly connected to  
the thermostat and will require a junction box and splice at the  
thermostat.  
Pass the control wires through the hole provided in the cor-  
ner post; then feed wires through the raceway built into the cor-  
ner post to the 24-v barrier located on the left side of the control  
box. See Fig. 10. The raceway provides the UL required clear-  
ance between high- and low-voltage wiring.  
HEAT ANTICIPATOR SETTINGS — Set heat anticipator set-  
tings at .14 amp for first stage and .14 for second stage heating,  
when available.  
LEGEND  
NFGC — National Fuel Gas Code  
*Field supplied.  
NOTE: Follow all local codes.  
Step 8 — Adjust Factory-Installed Options  
MOISTUREMISER DEHUMIDIFICATION PACKAGE —  
MoistureMiser package operation can be controlled by field  
installation of a Carrier-approved humidistat (Fig. 11). To  
install the humidistat:  
1. Route humidistat cable through hole provided in unit cor-  
ner post.  
2. 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. 10. The raceway provides the UL-required  
clearance between high- and low-voltage wiring.  
3. Use a wire nut to connect humidistat cable into low-  
voltage wiring as shown in Fig. 12.  
SPACING OF SUPPORTS  
STEEL PIPE  
SPACING OF SUPPORTS  
NOMINAL DIAMETER  
X DIMENSION  
(ft)  
(in.)  
1
/
6
8
10  
2
3/4 or 1  
11/4 or larger  
Fig. 7 — Gas Piping Guide (With Accessory  
Thru-the-Curb Service Connections)  
APOLLO CONTROL — The optional Apollo control is used  
to actively monitor all modes of operation as well as indoor  
(evaporator) fan status, filter status, and indoor-air quality. The  
Apollo control is designed to work with Carrier TEMP and  
VVT® systems.  
The thermostat must be wired to the Apollo Control before  
starting the unit. Refer to the Apollo Control installation  
instructions for information on installing the thermostat.  
Install conduit through side panel openings indicated in  
Fig. 5. Route power lines through connector to terminal con-  
nections as shown in Fig. 8.  
Voltage to compressor terminals during operation must be  
within voltage range indicated on unit nameplate (also see  
Tables 2A-2D). On 3-phase units, voltages between phases  
must be balanced within 2% and the current within 10%. Use  
the formula shown in Tables 2A-2D, Note 2 to determine the  
percent voltage imbalance. Operation on improper line voltage  
or excessive phase imbalance constitutes abuse and may cause  
damage to electrical components. Such operation would invali-  
date any applicable Carrier warranty.  
DISCONNECT SWITCH — The optional disconnect switch  
is non-fused. The switch has the capability of being locked in  
place for safety purposes.  
8
LEGEND  
Contactor  
C
COMPS — Compressors  
EQUIP  
GND  
IFC  
Equipment  
Ground  
Indoor (Evaporator)  
Fan Contactor  
National Electrical Code  
Terminal Block  
NEC  
TB  
Fig. 8 — Power Wiring Connections  
RACEWAY  
LOW VOLTAGE  
CONNECTIONS  
INTEGRATED GAS UNIT  
CONTROLLER (IGC)  
LEGEND  
AHA — Adjustable Heat Anticipator  
HOLE IN END PANEL (HIDDEN)  
CC  
TC  
TH  
Cooling Compensator  
Thermostat-Cooling  
Thermostat-Heating  
Field Wiring  
Fig. 10 — Field Control Wiring Raceway  
Factory Wiring  
NOTE: Connect Y2 when unit is equipped with an integrated  
economizer.  
Fig. 9 — Low-Voltage Connections With or  
Without Economizer  
9
Table 2A — 48HJ Electrical Data Standard Motor (Units Without Electrical Convenience Outlet)  
POWER  
SUPPLY  
MINIMUM UNIT  
VOLTAGE  
RANGE  
COMBUSTION  
FAN MOTOR  
NOMINAL  
VOLTAGE  
(V-Ph-Hz)  
COMPRESSOR OFM IFM  
DISCONNECT  
SIZE*  
UNIT  
48HJ  
WITH OUTLET  
Min Max RLA  
208/230-1-60 187 254 16.0  
208/230-3-60 187 254 10.3  
414 508  
518 632  
208/230-1-60 187 254 23.7  
208/230-3-60 187 254 13.5  
414 508  
518 632  
208/230-1-60 187 254 28.8  
208/230-3-60 187 254 17.3  
414 508  
518 632  
208/230-3-60 187 254 20.5  
LRA  
88.0  
77.0  
39.0  
31.0  
129.0  
99.0  
49.5  
40.0  
169.0  
123.0  
62.0  
50.0  
156.0  
70.0  
56.0  
FLA FLA  
FLA  
.57  
.57  
.30  
.30  
.57  
.57  
.30  
.30  
.57  
.57  
.30  
.30  
.57  
.30  
.30  
MCA  
25.6/25.6  
18.5/18.5  
9.0  
MOCP† FLA  
LRA  
25/25 101/101  
0.7  
0.7  
0.4  
0.4  
0.7  
0.7  
0.4  
0.4  
1.5  
1.5  
0.8  
0.8  
1.4  
0.6  
0.6  
4.9  
4.9  
2.2  
2.2  
4.9  
4.9  
2.2  
2.2  
8.8  
5.8  
2.6  
2.6  
5.8  
2.6  
2.6  
35/35  
25/25  
15  
18/18  
9
7
90/ 90  
46  
36  
004  
(3 Tons)  
460-3-60  
575-3-60  
5.1  
4.2  
7.3  
15  
35.2/35.2  
22.5/22.5  
11.9  
45/45  
30/30  
15  
34/34 142/142  
22/22 112/112  
005  
(4 Tons)  
460-3-60  
575-3-60  
7.4  
5.8  
12  
9
56  
45  
9.3  
15  
46.3/46.3  
28.9/28.9  
14.7  
60/60  
35/35  
20  
45/45 216/216  
28/28 168/168  
006  
(5 Tons)  
460-3-60  
575-3-60  
9.0  
7.1  
14  
11  
84  
67  
11.6  
15  
32.8/32.8  
15.2  
40/40  
20  
32/32 200/200  
007  
(6 Tons)  
460-3-60  
575-3-60  
414 508  
518 632  
9.6  
7.7  
15  
13  
92  
78  
12.2  
15  
Table 2B — 48HJ Electrical Data Standard Motor (Units With Electrical Convenience Outlet)  
POWER  
SUPPLY  
MINIMUM UNIT  
DISCONNECT  
SIZE*  
LRA  
30/30 106/106  
VOLTAGE  
RANGE  
COMBUSTION  
FAN MOTOR  
NOMINAL  
VOLTAGE  
(V-Ph-Hz)  
COMPRESSOR OFM IFM  
UNIT  
48HJ  
WITH OUTLET  
Min Max RLA  
208/230-1-60 187 254 16.0  
208/230-3-60 187 254 10.3  
414 508  
518 632  
208/230-1-60 187 254 23.7  
208/230-3-60 187 254 13.5  
414 508  
518 632  
208/230-1-60 187 254 28.8  
208/230-3-60 187 254 17.3  
414 508  
518 632  
208/230-3-60 187 254 20.5  
LRA  
88.0  
77.0  
39.0  
31.0  
129.0  
99.0  
49.5  
40.0  
169.0  
123.0  
62.0  
50.0  
156.0  
70.0  
56.0  
FLA FLA  
FLA  
.57  
.57  
.30  
.30  
.57  
.57  
.30  
.30  
.57  
.57  
.30  
.30  
.57  
.30  
.30  
MCA  
31.6/31.6  
24.5/24.5  
11.7  
MOCP† FLA  
0.7  
0.7  
0.4  
0.4  
0.7  
0.7  
0.4  
0.4  
1.5  
1.5  
0.8  
0.8  
1.4  
0.6  
0.6  
4.9  
4.9  
2.2  
2.2  
4.9  
4.9  
2.2  
2.2  
8.8  
5.8  
2.6  
2.6  
5.8  
2.6  
2.6  
40/40  
30/30  
15  
24/24  
11  
95/95  
48  
004  
(3 Tons)  
460-3-60  
575-3-60  
5.1  
4.2  
9.5  
15  
9
38  
41.2/41.2  
28.5/28.5  
14.6  
50/50  
35/35  
20  
39/39 147/147  
27/27 117/117  
005  
(4 Tons)  
460-3-60  
575-3-60  
7.4  
5.8  
14  
11  
58  
47  
11.5  
15  
52.3/52.3  
34.9/34.9  
17.4  
60/60  
40/40  
20  
50/50 221/221  
34/34 173/173  
006  
(5 Tons)  
460-3-60  
575-3-60  
9.0  
7.1  
17  
13  
86  
69  
13.8  
20  
38.8/38.8  
17.9  
45/45  
20  
37/37 205/205  
007  
(6 Tons)  
460-3-60  
575-3-60  
414 508  
518 632  
9.6  
7.7  
17  
15  
94  
79  
14.3  
20  
LEGEND  
FLA — Full Load Amps  
Example: Supply voltage is 460-3-60.  
HACR — Heating, Air Conditioning and Refrigeration  
IFM — Indoor (Evaporator) Fan Motor  
LRA — Locked Rotor Amps  
AB = 452 v  
BC = 464 v  
AC = 455 v  
MCA — Minimum Circuit Amps  
452 + 464 + 455  
3
MOCP— Maximum Overcurrent Protection  
NEC — National Electrical Code  
Average Voltage =  
OFM — Outdoor (Condenser) Fan Motor  
RLA — Rated Load Amps  
1371  
3
=
UL  
UnderwritersLaboratories  
= 457  
*Used to determine minimum disconnect per NEC.  
Fuse or HACR circuit breaker.  
Determine maximum deviation from average voltage.  
(AB) 457 452 = 5 v  
NOTES:  
(BC) 464 457 = 7 v  
1. In compliance with NEC requirements for multimotor and combi-  
nation load equipment (refer to NEC Articles 430 and 440), the  
overcurrent protective device for the unit shall be fuse or HACR  
breaker. UL, Canada units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
(AC) 457 455 = 2 v  
Maximum deviation is 7 v.  
Determine percent of voltage imbalance.  
7
% Voltage Imbalance= 100 x  
457  
Never operate a motor where a phase imbalance in supply volt-  
age 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  
maximum allowable 2%.  
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  
Table 2C — 48HJ High-Static Motor Units Without Electrical Convenience Outlet  
MINIMUM UNIT  
DISCONNECT  
SIZE*  
VOLTAGE COMPRESSOR  
RANGE (each)  
COMBUSTION  
FAN MOTOR  
POWER  
SUPPLY  
NOMINAL  
VOLTAGE  
(V-Ph-Hz)  
OFM IFM  
FLA FLA  
UNIT  
48HJ  
Min Max RLA  
LRA  
77.0  
39.0  
31.0  
99.0  
49.5  
40.0  
123.0  
62.0  
50.0  
156.0  
70.0  
56.0  
RLA  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
MCA  
19.4/19.4  
9.4  
MOCP†  
25/25  
15  
FLA  
19/19  
9
LRA  
120/120  
60  
208/230-3-60 187 254 10.3  
0.7  
0.4  
0.4  
0.7  
0.4  
0.4  
1.5  
0.8  
0.8  
1.4  
0.6  
0.6  
5.8  
2.6  
2.6  
5.8  
2.6  
2.6  
7.5  
3.4  
3.4  
7.5  
3.4  
3.4  
004  
005  
006  
007  
460-3-60  
575-3-60  
414 508  
518 632  
5.1  
4.2  
7.7  
15  
8
48  
208/230-3-60 187 254 13.5  
23.4/23.4  
12.3  
30/30  
15  
23/23  
12  
142/142  
71  
460-3-60  
575-3-60  
414 508  
518 632  
7.4  
5.8  
9.7  
15  
9
57  
208/230-3-60 187 254 17.3  
30.6/30.6  
15.5  
35/35  
20  
30/30  
15  
187/187  
94  
460-3-60  
575-3-60  
414 508  
518 632  
9.0  
7.1  
12.2  
15  
12  
76  
208/230-3-60 187 254 20.5  
30.6/30.6  
15.5  
35/35  
20  
30/30  
15  
187/187  
94  
460-3-60  
575-3-60  
414 508  
518 632  
9.6  
7.7  
12.2  
15  
12  
76  
Table 2D — 48HJ High-Static Motor Units With Electrical Convenience Outlet  
MINIMUM UNIT  
DISCONNECT  
SIZE*  
VOLTAGE COMPRESSOR  
COMBUSTION  
FAN MOTOR  
POWER  
SUPPLY  
NOMINAL  
VOLTAGE  
(V-Ph-Hz)  
OFM IFM  
FLA FLA  
UNIT  
48HJ  
RANGE  
(each)  
Min Max RLA  
LRA  
RLA  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
0.6  
0.3  
0.3  
MCA  
25.4/25.4  
12.1  
MOCP†  
30/30  
15  
FLA  
25  
12  
10  
29  
14  
11  
36  
18  
14  
39  
18  
15  
LRA  
124/124  
63  
50  
146/146  
73  
59  
192/192  
96  
77  
224/224  
104  
208/230-3-60 187 254 10.3  
77.0  
39.0  
31.0  
99.0  
49.5  
40.0  
123.0  
62.0  
50.0  
156.0  
70.0  
56.0  
0.7  
0.4  
0.4  
0.7  
0.4  
0.4  
1.5  
0.8  
0.8  
1.4  
0.6  
0.6  
5.8  
2.6  
2.6  
5.8  
2.6  
2.6  
7.5  
3.4  
3.4  
7.5  
3.4  
3.4  
004  
005  
006  
007  
460-3-60  
575-3-60  
414 508  
518 632  
5.1  
4.2  
9.8  
15  
208/230-3-60 187 254 13.5  
29.4/29.4  
15.0  
35/35  
20  
460-3-60  
575-3-60  
414 508  
518 632  
7.4  
5.8  
11.8  
15  
208/230-3-60 187 254 17.3  
36.6/36.6  
18.2  
40/40  
20  
460-3-60  
575-3-60  
414 508  
518 632  
9.0  
7.1  
14.4  
20  
208/230-3-60 187 254 20.5  
40.5/40.5  
18.7  
45/45  
25  
460-3-60  
575-3-60  
414 508  
518 632  
9.6  
7.7  
15.0  
20  
89  
LEGEND  
FLA — Full Load Amps  
Example: Supply voltage is 460-3-60.  
HACR — Heating, Air Conditioning and Refrigeration  
IFM — Indoor (Evaporator) Fan Motor  
LRA — Locked Rotor Amps  
AB = 452 v  
BC = 464 v  
AC = 455 v  
MCA — Minimum Circuit Amps  
452 + 464 + 455  
3
MOCP— Maximum Overcurrent Protection  
NEC — National Electrical Code  
Average Voltage =  
OFM — Outdoor (Condenser) Fan Motor  
RLA — Rated Load Amps  
1371  
3
=
UL  
UnderwritersLaboratories  
= 457  
*Used to determine minimum disconnect per NEC.  
Fuse or HACR circuit breaker.  
Determine maximum deviation from average voltage.  
(AB) 457 452 = 5 v  
NOTES:  
(BC) 464 457 = 7 v  
1. In compliance with NEC requirements for multimotor and combi-  
nation load equipment (refer to NEC Articles 430 and 440), the  
overcurrent protective device for the unit shall be fuse or HACR  
breaker. UL, Canada units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
(AC) 457 455 = 2 v  
Maximum deviation is 7 v.  
Determine percent of voltage imbalance.  
7
% Voltage Imbalance= 100 x  
457  
Never operate a motor where a phase imbalance in supply volt-  
age 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  
maximum allowable 2%.  
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.  
11  
OPTIONAL DURABLADE ECONOMIZER — The option-  
al economizer hood assembly is packaged and shipped in the  
filter section. Damper blades and control boards are installed at  
the factory and the economizer is shipped in the vertical dis-  
charge 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.  
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. 17.  
6. Remove 12-pin blue and yellow wire jumper plug from  
factory wiring harness and store. Insert economizer plug  
into 12-pin plug of factory wiring harness. Remove tape  
and shipping screw from barometric relief damper. See  
Fig.18.  
Assembly:  
7. If ventilation air is not required, proceed to Step 8. If ven-  
tilation air is required, determine minimum position set-  
ting for required airflow. See Fig. 19. 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. 19. Tighten screws.  
8. Remove tape from outdoor-air thermostat (OAT). Fasten  
OAT to inside of hood using screws and speed clips pro-  
vided. See Fig. 20. Make sure OAT terminals are posi-  
tioned up.  
1. Determine if ventilation air is required in building. If so,  
determine the minimum amount to be supplied by each  
unit and record quantity of ventilation air needed for use  
in Step 7.  
2. Remove filter access panel by raising panel and swinging  
panel outward. Panel is now disengaged from track and  
can be removed. No tools are required to remove filter ac-  
cess panel. Remove outdoor-air opening panel. Save pan-  
els and screws. See Fig. 13. Remove economizer, and re-  
move optional outdoor-air damper hood package from  
filter section (located behind economizer).  
3. Assemble outdoor-air hood top and side plates as shown  
in Fig. 14. Install seal strips on hood top and sides. Put  
aside screen retainer and retainer screw for later assem-  
bly. Do not attach hood to unit at this time.  
4. Slide economizer into unit and secure with screws. See  
Fig. 15.  
MOISTUREMISER  
NOTE: Be sure to engage rear economizer flange under  
tabs in vertical return-air opening.  
5. To convert to horizontal discharge application:  
a. Rotate economizer 90 degrees until the econo-  
mizer motor faces the condenser section (see  
Fig. 16).  
% RELATIVE HUMIDITY  
b. Remove tape and shipping screw, rotate the baro-  
metric relief damper cover 90 degrees.  
Fig. 11 Accessory Field-Installed Humidistat  
LEGEND  
C
Contactor (Compressor)  
Crankcase Heater  
CCH  
COMP Compressor  
FU  
HU  
IFM  
Fuse  
Humidistat  
Indoor (Evaporator) Fan Motor  
LLSV Liquid Line Solenoid Valve  
S-LPS Low-Pressure Switch (Subcooler Only)  
TRAN Transformer  
Factory Wiring  
Accessory or Optional Wiring  
Fig. 12 Typical MoistureMiser Dehumidification Package Humidistat Wiring  
(208/230-V Unit Shown)  
12  
9. 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  
ECONOMIZER  
PLUG  
ECONOMIZER  
MOTOR  
TOP  
SCREW  
10. Fasten hood top and side plate assembly (Fig. 14) to  
outdoor-air opening panel with screws provided.  
11. Place knob supplied with economizer on OAT. See  
Fig. 20. 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. 20.  
12. Connect OAT per Fig. 21.  
13. 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.  
SHIPPING  
SCREW  
NOTE: Refer to Fig. 22 for economizer barometric relief  
damper characteristics.  
Fig. 15 Durablade Economizer Installed in Unit  
ECONOMIZER  
CONTROL  
BOARD  
FILTER  
ACCESS  
PANEL  
COMPRESSOR  
ACCESS  
OUTDOOR-AIR  
OPENING  
PANEL  
BAROMETRIC  
RELIEF  
DAMPER  
Fig. 13 Typical Access Panel Locations  
ECONOMIZER  
PLUG  
ECONOMIZER  
MOTOR  
Fig. 16 Horizontal Durablade Economizer  
Installation  
BLOCK-OFF PLATE  
Fig. 17 Horizontal Discharge Block-Off Plate  
Fig. 14 Outdoor-Air Hood Details  
13  
U-SHAPED  
HOLE  
(NOT SHOWN)  
ECONOMIZER  
PLUG  
WIRING  
HARNESS  
Fig. 18 Typical Durablade Economizer and  
OAT  
Wiring Harness  
(TERMINALS ARE UP)  
TOP  
UNIT  
OUTSIDE AIR  
SCREEN  
Example:  
Given —  
Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . .0.1 in. wg  
Outdoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1100 cfm  
Determine —  
Setting = 6  
ENTHALPY  
CONTROL  
Fig. 19A Durablade Economizer Damper  
Minimum Position Setting  
HOOD  
0
1
2
3
4
5
6
Fig. 20 Outdoor-Air Thermostat/  
Enthalpy Control Installation  
7
8
9
Fig. 19B Durablade Economizer Minimum  
Fig. 21 Wiring Connections for  
Position Damper Setting  
Outdoor-Air Thermostat  
14  
0.90  
the EconoMi$er plug into the unit wiring harness. Refer  
to wiring diagram Fig. 30 and 31. Also refer to Fig. 32 if  
installing an accessory power exhaust.  
0.80  
0.70  
0.60  
0.50  
0.40  
0.30  
0.20  
9. Install the complete hood assembly on the unit and secure  
using the screws provided.  
10. Remove the indoor fan motor access panel. See Fig. 33.  
11. Mount the supply-air temperature sensor to the lower left  
portion of the indoor blower housing with the two  
(2) screws provided (see Fig. 34). Connect the violet and  
pink wires to the corresponding connections on the  
supply-air temperature sensor. Replace the indoor fan  
motor access panel.  
ECONOMI$ER  
CONTROLLER  
PLUG  
GEAR-DRIVEN  
DAMPER  
OUTDOOR AIR  
TEMPERATURE  
SENSOR  
0.10  
0.00  
100  
200  
300  
400  
500  
600  
700  
800  
CFM  
ACTUATOR  
Fig. 22 Durablade Economizer Barometric  
Relief Damper Characteristics  
BAROMETRIC RELIEF DAMPERS  
OPTIONAL ECONOMI$ER — See Fig. 23 for EconoMi$er  
component locations.  
Fig. 23 Economizer 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. 24.  
If installing an optional Power Exhaust Assembly, refer to  
the EconoMi$er Power Exhaust Installation Instructions.  
Controller should be mounted in vertical position as  
shown in Fig. 23.  
2. Assemble the hood assembly as follows:  
Remove the EconoMi$er hood from its packaging. Re-  
move shipping brackets holding hood package to  
EconoMi$er. Locate the outdoor-air opening panel. See  
Fig. 25. Remove hood assembly shipping brackets locat-  
ed on the back (sloped) side of the EconoMi$er assembly.  
These brackets are used to retain the hood assembly dur-  
ing shipping only.  
1
3
3. Install the /8 x /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. 25, using the screws provided. Do not attach hood  
assembly to unit at this time.  
1
3
4. Install the /8 x /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. 26, using the  
screws provided. Do not attach hood assembly to the unit  
at this time.  
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. 27) hood as-  
sembly to unit at this time.  
FILTER ACCESS  
PANEL  
OUTDOOR-AIR  
OPENING PANEL  
Fig. 24 Typical Access Panel Locations  
OUTDOOR AIR  
OPENING PANEL  
EXHAUST AIR  
HOOD TOP  
SCREEN  
RETAINER  
EXHAUST AIR  
HOOD SIDES  
6. Install the EconoMi$er assembly into the rooftop unit.  
See Fig. 28 and 29.  
SEAL STRIP  
NOTE: Be sure to engage rear EconoMi$er flange under  
tabs in return-air opening of the unit base. See Fig. 28.  
7. Install the outdoor-air block-off plate, then secure the  
EconoMi$er with the screws provided. See Fig. 29.  
8. Remove and discard the 12-pin jumper plug from the unit  
wiring harness located int he upper left corner and insert  
EXHAUST AIR SCREEN  
EXHAUST AIR  
BOTTOM BRACKET  
Fig. 25 Exhaust Air Hood Assembly  
15  
OUTDOOR AIR  
OPENING  
PANEL  
ECONOMIZER CLIP  
HVAC UNIT  
UNIT FILTER  
RACK  
SEAL STRIP  
OUTDOOR AIR  
HOOD TOP  
SCREEN  
RETAINER  
ECONOMIZER  
UNIT BASE  
OUTDOOR AIR  
INLET  
SCREENS  
SEAL STRIP  
ECONOMIZER REAR  
FLANGE  
ASSEMBLED  
EXHAUST HOOD  
Fig. 28 Rear EconoMi$er Flange Installation  
OUTDOOR AIR  
HOOD SIDES  
Fig. 26 Outdoor-Air Hood Assembly  
WIRING  
HARNESS  
OUTDOOR  
AIR  
BLOCK-OFF  
PLATE  
Fig. 27 Completed Hood Assembly  
Fig. 29 EconoMi$er Installed  
LEGEND  
OAT  
Outdoor-Air Thermostat  
Fig. 30 EconoMi$er Wiring  
16  
CONTROL BOX/BURNER  
ACCESS PANEL  
ECONOMI$ER  
CONTROLLER  
BROWN  
VIOLET  
TEMP  
TEMP  
OUTDOOR  
AIR  
OAT  
COM  
OAH  
-15 V  
RAT  
COM  
OUT  
PWR  
SENSOR  
WHITE  
RED  
BROWN  
TEMP  
VIOLET  
WHITE  
RETURN  
AIR  
SENSOR  
TEMP  
COM  
OUT  
COM  
RAH  
RED  
+15 V  
PWR  
CO2  
V+  
SENSOR  
24  
(+)  
CO2  
CO2 COM  
COM VAC  
DAT  
COM  
REM POT  
COM  
INDOOR FAN MOTOR  
ACCESS PANEL AND BLOWER  
SUPPLY AIR  
TEMPERATURE SENSOR  
Fig. 33 Typical Access Panel Locations  
PINK  
TEMP  
TEMP  
(Standard Efficiency Unit Shown)  
LED  
COM  
VIOLET  
Fig. 31 EconoMi$er Sensor Wiring  
POWER EXHAUST SYSTEM (HIGH VOLTAGE)  
TO FUSED  
DISCONNECT  
FAN 1  
FAN 2  
CAPACITOR 2  
CAPACITOR 1  
RELAY 2  
RELAY 1  
RED  
H1  
GRAY  
RED YEL BLU  
GRAY  
H4  
H2  
H1  
H3  
H2  
4-PIN  
CONNECTOR PLUG  
(HIGH VOLTAGE)  
3-PIN  
CONNECTOR PLUG  
(LOW VOLTAGE)  
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  
C1  
FAN 1  
R1  
24 VAC  
3-PIN  
CONNECTOR  
PLUG  
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. 32 Wiring Diagram for Power Exhaust System  
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 connection  
board.  
2. Locate the minimum position (MIN POS) potentiometer.  
Turn the potentiometer full CCW to fully close the out-  
door air dampers. Turn the potentiometer gradually  
clockwise (CW) to the desired position. See Fig. 35.  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
MOUNTING  
LOCATION  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
3. Replace the filter access panel. See Fig. 24. Ensure the fil-  
ter access panel slides along the tracks and is securely  
engaged.  
Fig. 34 Supply-Air Sensor Placement  
4. Calculate the minimum airflow across the EconoMi$er.  
a. Calculate % of outside air using the following  
formula.  
% Outdoor air through EconoMi$er  
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:  
1. Determine the value at which you want the minimum po-  
sition of the dampers to begin opening to allow a greater  
amount of outdoor air to enter. The range is 800 to  
1,400 ppm.  
Mixture Temp –  
Return Air Temp  
% Outdoor air =  
Outdoor Temp –  
Return Air Temp  
b. Divide total CFM by percentage outdoor air, this  
gives outdoor air volume in CFM.  
5. Turn on base unit power.  
NOTE: The EconoMi$er begins operation three minutes after  
power up.  
2. Locate the CO2 SP (PPM) potentiometer and adjust to the  
desired set point. See Fig. 35.  
Mechanical Cooling Lockout — Determine the outdoor-air  
temperature at which you want the mechanical cooling (com-  
pressors) to be disabled. Locate the mechanical cooling lockout  
(MECH CLG LOCKOUT) potentiometer. To disable this fea-  
ture, turn the potentiometer counterclockwise (CCW) to the  
OFF position. Otherwise, set the value between 10 and 60 F.  
Mechanical cooling will not operate when the outdoor air  
temperature is below this value. See Fig. 35.  
Personal Injury Hazard. Avoid possible injury by keep-  
ing fingers away from damper blades.  
6. See Fig. 36 for barometric relief damper characteristics.  
Dry Bulb Changeover Set Up — Determine the dry bulb  
changeover set point from Table 3. The settings are A, B, C and  
D. Locate the ECON SP potentiometer and set the dry bulb  
changeover set point. See Fig. 35. When the OAT is above this  
set point, the damper is limited to minimum position setting.  
Table 3 Changeover Set Points  
SETTINGS  
A
B
C
D
Dry Bulb (°F)  
Single Enthalpy* (Btu/lb)  
Differential Temperature* (°F, Not Adjustable)  
Differential Enthalpy* (Btu/lb, Not Adjustable)  
73 69 66 63  
27 25 24 22  
Fig. 35 EconoMi$er Control Adjustment  
Potentiometers (Factory Settings)  
2
1
2
1
2
1
2
1
0.5  
0.4  
*Field-installed accessory.  
If a potentiometer fails, its setting will default to the values  
in Table 4.  
0.3  
0.2  
Table 4 Default Potentiometer Settings  
POTENTIOMETER  
CO2 SP (PPM)  
MECH CLG LOCKOUT  
ECON SP  
DEFAULT SETTING  
0.1  
0
1,000  
47°  
D
800  
1200 1600 2000 2400  
0
400  
MIN POS (%)  
20  
FLOW (CUBIC FEET/MINUTE)  
Fig. 36 Barometric Relief Capacity  
18  
Step 9 Adjust Evaporator-Fan Speed Ad-  
just evaporator-fan speed to meet jobsite conditions.  
Tables 5A and 5B show fan rpm at motor pulley settings.  
Tables 6 and 7 show maximum amp draw of belt-drive motor.  
Table 8 shows motor nominal horsepower for evaporator-fan  
motors. Refer to Tables 8-25 for performance data. See Tables  
26 and 27 for accessory and option static pressure drops.  
BELT-DRIVE MOTORS — Fan motor pulleys are factory set  
for speed shown in Table 1. Check pulley alignment and belt  
tension prior to start-up.  
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, tag disconnect.  
MOTOR MOUNTING  
PLATE NUTS  
Fig. 37 Belt-Drive Motor Mounting  
2. Loosen belt by loosening fan motor mounting nuts. See  
Fig. 37.  
3. Loosen movable pulley flange setscrew (see Fig. 38).  
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.)  
To align fan and motor pulleys, loosen fan pulley setscrews  
and 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 8 to 10 lbs of  
force) and tighten mounting nuts.  
3. Adjust lock bolt and nut on mounting plate to secure mo-  
tor in fixed position.  
Fig. 38 Evaporator-Fan Pulley Adjustment  
19  
Table 5A 48HJ Fan Rpm at Motor Pulley Setting With Standard Motor  
STANDARD MOTOR*  
MOTOR PULLEY TURNS OPEN  
UNIT  
48HJ  
1
0
/
1
11/2  
990  
1080  
2
21/2  
925  
1015  
3
890  
980  
31/2  
860  
945  
4
825  
910  
41/2  
795  
875  
5
760  
840  
51/2  
6
2
004  
005  
1090  
1185  
1055  
1150  
1025  
1115  
960  
1045  
006  
1460  
1585  
1425  
1540  
1385  
1490  
1350  
1445  
1315  
1400  
1275  
1350  
1240  
1305  
1205  
1260  
1165  
1210  
1130  
1165  
1095  
1120  
1055  
1020  
(single-phase)  
006 (3-phase)  
and 007  
*Approximate fan rpm shown (standard motor/drive).  
Table 5B 48HJ Fan Rpm at Motor Pulley Setting With High Static Motor  
HIGH-STATIC MOTOR  
UNIT  
MOTOR PULLEY TURNS OPEN  
1
11/2  
2
21/2  
3
31/2  
4
41/2  
5
51/2  
1107  
1107  
6
48HJ  
0
/
1
2
004  
005  
006  
007  
1455  
1455  
1685  
1685  
1423  
1423  
1589  
1589  
1392  
1392  
1557  
1557  
1360  
1360  
1525  
1525  
1328  
1328  
1493  
1493  
1297  
1297  
1460  
1460  
1265  
1265  
1428  
1428  
1233  
1233  
1396  
1396  
1202  
1202  
1364  
1364  
1170  
1170  
1332  
1332  
1138  
1138  
1300  
1300  
1075  
1075  
Table 6 Evaporator-Fan Motor Data Standard Motor  
UNIT  
48HJ  
UNIT  
MAXIMUM  
MAXIMUM  
MAXIMUM  
UNIT VOLTAGE  
PHASE  
CONTINUOUS BHP*  
OPERATING WATTS*  
AMP DRAW  
5.4  
Single  
1.20  
1.20  
1.20  
1.20  
1.30  
2.40  
1000  
1000  
1000  
1000  
1650  
2120  
208/230  
208/230  
460  
5.4  
2.4  
2.4  
5.4  
5.4  
2.4  
2.4  
9.7  
6.4  
2.9  
2.9  
6.4  
004  
005  
Three  
Single  
Three  
Single  
Three  
575  
208/230  
208/230  
460  
575  
208/230  
208/230  
460  
575  
208/230  
460  
006  
007  
Three  
2.40  
2120  
2.9  
575  
2.9  
LEGEND  
Bhp Brake Horsepower  
*Extensive motor and electrical testing on these units ensures that  
the full horsepower and watts range of the motors can be utilized  
with confidence. Using your fan motors up to the ratings shown in  
this table will not result in nuisance tripping or premature motor fail-  
ure. Unit warranty will not be affected.  
Table 7 Evaporator-Fan Motor Data High-Static Motors  
UNIT  
48HJ  
UNIT  
PHASE  
MAXIMUM  
CONTINUOUS BHP*  
MAXIMUM  
OPERATING WATTS*  
MAXIMUM  
AMP DRAW  
UNIT VOLTAGE  
208/230  
460  
575  
208/230  
460  
575  
208/230  
460  
575  
208/230  
460  
575  
6.4  
2.9  
2.9  
6.4  
2.9  
2.9  
7.9  
3.6  
3.6  
6.4  
3.6  
3.6  
004  
005  
006  
007  
Three  
Three  
Three  
Three  
2.40  
2.40  
2.90  
2.90  
2120  
2120  
2615  
2615  
LEGEND  
Bhp Brake Horsepower  
*Extensive motor and electrical testing on these units ensures that  
the full horsepower and watts range of the motors can be utilized  
with confidence. Using your fan motors up to the ratings shown in  
this table will not result in nuisance tripping or premature motor fail-  
ure. Unit warranty will not be affected.  
20  
Table 8 Motor Nominal Horsepower  
UNIT 48HJ  
004  
MOTOR  
NOMINAL HORSEPOWER  
All  
All  
1.00  
1.00  
1.50  
2.00  
2.00  
005  
Single Phase  
Three Phase  
All  
006  
007  
Table 9 Outdoor Sound Power (Total Unit)  
ARI  
RATING  
(Bels)  
OCTAVE BANDS  
UNIT  
48HJ  
63  
125  
250  
500  
1000  
2000  
4000  
8000  
004,005  
006,007  
7.6  
8.0  
55.9  
59.1  
66.0  
68.9  
64.0  
68.7  
66.2  
71.9  
68.4  
74.0  
64.5  
68.9  
61.7  
65.7  
57.3  
59.0  
LEGEND  
Air Conditioning and Refrigeration Institute  
Bels Sound Levels (1 bel = 10 decibels)  
ARI  
Table 10 48HJ004 Fan Performance Vertical Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
0.2  
0.3  
0.4  
0.5  
0.6  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
673  
709  
746  
785  
826  
868  
911  
0.18  
0.22  
0.26  
0.32  
0.38  
0.45  
0.53  
736  
782  
806  
843  
891  
937  
985  
0.22  
0.28  
0.30  
0.35  
0.43  
0.51  
0.61  
805  
835  
867  
903  
942  
984  
1029  
0.25  
0.30  
0.35  
0.41  
0.48  
0.57  
0.66  
865  
900  
0.29  
0.35  
0.40  
0.47  
0.53  
0.62  
0.72  
911  
937  
0.34  
0.38  
0.40  
0.50  
0.60  
0.67  
0.77  
929  
964  
960  
991  
1032  
1073  
994  
1047  
1067  
1109  
EXTERNAL STATIC PRESSURE (in. wg)  
0.9 1.0  
AIRFLOW  
(Cfm)  
0.7  
0.8  
1.1  
1.2  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
900  
1000  
1100  
1200  
1300  
1400  
1500  
957  
992  
1013  
1045  
1075  
1110  
1150  
0.39  
0.44  
0.49  
0.56  
0.64  
0.73  
0.78  
988  
1039  
1068  
1090  
1122  
1160  
1190  
0.43  
0.49  
0.55  
0.64  
0.70  
0.78  
0.84  
1039  
1061  
1091  
1109  
1152  
1181  
1225  
0.47  
0.55  
0.61  
0.68  
0.76  
0.83  
0.89  
1061  
1088  
1109  
1156  
1190  
1237  
1271  
0.51  
0.60  
0.66  
0.73  
0.82  
0.88  
0.95  
1083  
1111  
1127  
1203  
1228  
1293  
1371  
0.54  
0.66  
0.73  
0.81  
0.87  
0.94  
1.00  
1105  
1136  
1145  
1250  
1266  
1349  
1383  
0.58  
0.72  
0.80  
0.86  
0.94  
0.99  
1.05  
Table 11 48HJ004 Fan Performance Vertical Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
900  
1000  
1100  
1200  
1300  
1400  
1500  
673  
709  
746  
785  
826  
868  
911  
0.18  
0.22  
0.28  
0.32  
0.38  
0.45  
0.53  
805  
835  
867  
903  
942  
984  
1029  
0.25  
0.30  
0.35  
0.41  
0.48  
0.57  
0.66  
911  
937  
0.34  
0.38  
0.40  
0.50  
0.60  
0.67  
0.77  
988  
1039  
1068  
1090  
1122  
1160  
1190  
0.43  
0.49  
0.55  
0.64  
0.70  
0.84  
1.00  
1061  
1086  
1109  
1156  
1190  
1237  
1271  
0.47  
0.55  
0.61  
0.68  
0.76  
0.85  
0.95  
964  
994  
1047  
1087  
1109  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
900  
1000  
1100  
1200  
1300  
1400  
1500  
1105  
1136  
1145  
1210  
1266  
1349  
1363  
0.57  
0.63  
0.67  
0.74  
0.84  
0.93  
1.05  
1140  
1172  
1181  
1248  
1306  
1391  
1406  
0.63  
0.69  
0.73  
0.81  
0.92  
1.02  
1.15  
1170  
1203  
1213  
1282  
1341  
1429  
1465  
0.68  
0.75  
0.80  
0.88  
1.00  
1.11  
1.25  
1198  
1232  
1242  
1312  
1373  
1463  
1500  
0.73  
0.80  
0.85  
0.94  
1.07  
1.19  
1.34  
1224  
1258  
1268  
1340  
1402  
1494  
1532  
0.77  
0.86  
0.91  
1.01  
1.14  
1.26  
1.43  
LEGEND AND NOTES FOR TABLES 10 AND 11  
4. Maximum continuous bhp is 1.20 for standard motor, 2.40 for high-static  
motor. 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 ratings shown will not result in nuisance tripping  
or premature motor failure. Unit warranty will not be affected. See  
Evaporator-Fan Motor Data tables on page 20 for additional information.  
5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
LEGEND  
Bhp  
Brake Horsepower Input to Fan  
Factory-Installed Option  
FIOP  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 2.)  
2. Motor drive range is 760 to 1090 rpm for standard motor; 1075 to 1455  
rpm for high-static motor. All other rpms require a field-supplied drive.  
3. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
6. Interpolation is permissible. Do not extrapolate.  
21  
Table 12 48HJ005 Fan Performance Vertical Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
0.2  
0.3  
0.4  
0.6  
0.7  
0.8  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
596  
633  
672  
711  
751  
791  
831  
872  
913  
0.20  
0.24  
0.30  
0.35  
0.42  
0.49  
0.58  
0.67  
0.77  
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  
722  
754  
788  
822  
871  
907  
929  
965  
1002  
0.31  
0.36  
0.42  
0.49  
0.56  
0.65  
0.74  
0.84  
0.95  
779  
809  
840  
873  
907  
941  
976  
1011  
1046  
0.36  
0.42  
0.48  
0.55  
0.63  
0.72  
0.81  
0.92  
1.03  
872  
902  
933  
963  
993  
1024  
1057  
1091  
1125  
0.48  
0.55  
0.62  
0.69  
0.77  
0.87  
0.97  
1.08  
1.21  
915  
943  
972  
1002  
1033  
1064  
1095  
1127  
1160  
0.54  
0.61  
0.69  
0.77  
0.85  
0.96  
1.06  
1.17  
1.30  
957  
984  
0.60  
0.67  
0.75  
0.84  
0.93  
1.04  
1.14  
1.25  
1.38  
1011  
1041  
1072  
1103  
1132  
1162  
1195  
EXTERNAL STATIC PRESSURE (in. wg)  
1.1 1.2 1.4  
AIRFLOW  
(Cfm)  
0.9  
1.0  
1.6  
1.8  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
993  
1021  
1049  
1077  
1107  
1137  
1167  
1197  
1229  
0.65  
0.74  
0.82  
0.92  
1.00  
1.12  
1.23  
1.35  
1.48  
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  
1056  
1090  
1120  
1147  
1174  
1203  
1233  
1263  
1294  
0.72  
0.85  
0.96  
1.06  
1.17  
1.29  
1.41  
1.54  
1.68  
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  
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  
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  
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  
Table 13 48HJ005 Fan Performance Vertical Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
779  
809  
0.36  
0.42  
0.48  
0.55  
0.63  
0.72  
0.81  
0.92  
1.03  
872  
902  
0.48  
0.55  
0.62  
0.69  
0.77  
0.87  
0.97  
1.08  
1.21  
957  
984  
0.60  
0.67  
0.75  
0.84  
0.93  
1.04  
1.14  
1.25  
1.38  
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  
840  
933  
1011  
1041  
1072  
1103  
1132  
1162  
1195  
873  
963  
993  
1024  
1057  
1091  
1125  
907  
941  
976  
1011  
1046  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
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  
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  
1374  
1309  
1349  
1382  
1420  
1452  
1482  
1.09  
1.21  
1.37  
1.57  
1.81  
2.02  
2.22  
LEGEND AND NOTES FOR TABLES 12 AND 13  
4. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
LEGEND  
Bhp  
FIOP  
Brake Horsepower Input to Fan  
Factory-Installed Option  
5. Maximum continuous bhp is 1.2 for standard motor, 2.4 for high-static  
motor. 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 ratings shown will not result in nuisance tripping or  
premature motor failure. Unit warranty will not be affected. See Evapora-  
tor-Fan Motor Data tables on page 20 for additional information.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2. indicates field-supplied motor and drive required.  
3. Motor drive range is 840 to 1185 rpm for standard motor; 1075 to  
1455 rpm for high-static motor. All other rpms require a field-supplied  
drive.  
7. Interpolation is permissible. Do not extrapolate.  
22  
Table 14 48HJ006 Fan Performance Vertical Discharge Units With Standard Motor  
Single-Phase Units  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
Bhp  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
771  
816  
902  
942  
982  
1022  
1063  
1104  
1130  
1174  
1201  
0.37  
0.45  
0.61  
0.70  
0.80  
0.91  
0.99  
1.13  
1.26  
1.37  
1.48  
828  
869  
940  
0.44  
0.51  
0.60  
0.66  
0.78  
0.90  
1.00  
1.15  
1.29  
1.41  
1.53  
935  
968  
0.58  
0.66  
0.75  
0.82  
0.91  
1.01  
1.17  
1.28  
1.38  
1.55  
1.71  
1027  
1056  
1094  
1147  
1175  
1218  
1261  
1310  
1358  
1392  
1427  
0.73  
0.81  
0.91  
0.97  
1.11  
1.23  
1.35  
1.52  
1.69  
1.81  
1.94  
1107  
1127  
1175  
1248  
1266  
1303  
1340  
1375  
1410  
1460  
1518  
0.88  
0.97  
1.09  
1.20  
1.29  
1.41  
1.53  
1.63  
1.72  
1.90  
2.16  
1185  
1215  
1245  
1322  
1356  
1397  
1428  
1459  
1488  
1532  
1575  
1.04  
1.14  
1.26  
1.33  
1.47  
1.52  
1.66  
1.80  
1.93  
2.14  
2.35  
1257  
1286  
1315  
1395  
1430  
1459  
1489  
1528  
1561  
1584  
1633  
1.20  
1.31  
1.44  
1.46  
1.58  
1.67  
1.80  
1.95  
2.13  
2.28  
2.53  
1330  
1353  
1381  
1475  
1504  
1532  
1567  
1603  
1637  
1671  
1698  
1.38  
1.49  
1.52  
1.56  
1.69  
1.82  
1.99  
2.17  
2.35  
2.55  
2.72  
1411  
1421  
1443  
1542  
1556  
1588  
1626  
1666  
1710  
1756  
1.59  
1.68  
1.69  
1.71  
1.82  
1.97  
2.16  
2.37  
2.54  
2.70  
1007  
1063  
1097  
1132  
1180  
1214  
1248  
1292  
1335  
978  
1023  
1068  
1115  
1159  
1202  
1237  
1272  
3-Phase Units  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
0.6 0.8 1.0  
1.2  
1.4  
1.6  
Bhp  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
771  
816  
902  
942  
982  
1022  
1063  
1104  
1130  
1174  
1201  
0.37  
0.45  
0.61  
0.70  
0.80  
0.91  
0.99  
1.13  
1.26  
1.37  
1.48  
828  
869  
940  
0.44  
0.51  
0.60  
0.66  
0.78  
0.90  
1.00  
1.15  
1.29  
1.41  
1.53  
935  
968  
0.58  
0.66  
0.75  
0.82  
0.91  
1.01  
1.17  
1.28  
1.38  
1.55  
1.71  
1027  
1056  
1094  
1147  
1175  
1218  
1261  
1310  
1358  
1392  
1427  
0.73  
0.81  
0.91  
0.97  
1.11  
1.23  
1.35  
1.52  
1.69  
1.81  
1.94  
1107  
1127  
1175  
1248  
1266  
1303  
1340  
1375  
1410  
1460  
1518  
0.88  
0.97  
1.09  
1.20  
1.29  
1.41  
1.53  
1.63  
1.72  
1.90  
2.16  
1185  
1215  
1245  
1322  
1356  
1397  
1428  
1459  
1488  
1532  
1575  
1.04  
1.14  
1.26  
1.33  
1.47  
1.52  
1.66  
1.80  
1.93  
2.14  
2.35  
1257  
1286  
1315  
1395  
1430  
1459  
1489  
1528  
1561  
1584  
1633  
1.20  
1.31  
1.44  
1.46  
1.58  
1.67  
1.80  
1.95  
2.13  
2.28  
2.53  
1330  
1353  
1381  
1475  
1504  
1532  
1567  
1603  
1637  
1671  
1698  
1.38  
1.49  
1.52  
1.56  
1.69  
1.82  
1.99  
2.17  
2.35  
2.55  
2.72  
1411  
1421  
1443  
1542  
1556  
1588  
1626  
1666  
1710  
1756  
1.59  
1.68  
1.69  
1.71  
1.82  
1.97  
2.16  
2.37  
2.54  
2.70  
1007  
1063  
1097  
1132  
1180  
1214  
1248  
1292  
1335  
978  
1023  
1068  
1115  
1159  
1202  
1237  
1272  
Table 15 48HJ006 Fan Performance Vertical Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
808  
0.42  
0.49  
0.57  
0.66  
0.76  
0.87  
0.99  
1.12  
1.26  
1.41  
1.57  
914  
0.56  
0.64  
0.72  
0.82  
0.92  
1.04  
1.17  
1.30  
1.47  
1.61  
1.78  
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  
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  
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  
846  
884  
950  
983  
924  
965  
1018  
1057  
1096  
1136  
1173  
1210  
1249  
1289  
1008  
1051  
1095  
1140  
1185  
1231  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
1250  
1299  
1352  
1435  
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  
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  
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  
LEGEND AND NOTES FOR TABLES 14 AND 15  
4. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
LEGEND  
Brake Horsepower Input to Fan  
Factory-Installed Option  
Bhp  
5. Maximum continuous bhp is 1.30 for single-phase standard motors, 2.40  
for 3-phase standard motors, and 2.90 for high-static motors. 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 ratings shown will not result in nuisance tripping or premature motor  
failure. Unit warranty will not be affected. See Evaporator-Fan Motor  
Data tables on page 20 for additional information.  
FIOP  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2.  
indicates field-supplied motor and drive required.  
3. Motor drive range is 1020 to 1460 rpm for single-phase standard  
motors, 1120 to 1585 for 3-phase standard motors, and 1300 to 1685 for  
high-static motors. All other rpms require a field-supplied drive.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
7. Interpolation is permissible. Do not extrapolate.  
23  
Table 16 48HJ007 Fan Performance Vertical Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
942  
982  
0.70  
0.80  
0.91  
0.99  
1.13  
1.26  
1.37  
1.48  
1.62  
1.75  
1.87  
2.07  
2.26  
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  
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  
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  
1248  
1266  
1303  
1340  
1375  
1410  
1460  
1518  
1562  
1602  
1642  
1.20  
1.29  
1.41  
1.53  
1.63  
1.72  
1.90  
2.16  
2.42  
2.64  
2.86  
1322  
1356  
1397  
1428  
1459  
1488  
1532  
1575  
1620  
1666  
1.33  
1.47  
1.52  
1.66  
1.80  
1.93  
2.14  
2.35  
2.59  
2.85  
1395  
1430  
1459  
1489  
1528  
1561  
1584  
1633  
1675  
1.46  
1.58  
1.67  
1.80  
1.95  
2.13  
2.28  
2.53  
2.77  
1475  
1504  
1532  
1567  
1603  
1637  
1671  
1698  
1.56  
1.69  
1.82  
1.99  
2.17  
2.35  
2.55  
2.72  
1542  
1556  
1588  
1626  
1666  
1710  
1756  
1.71  
1.82  
1.97  
2.16  
2.37  
2.54  
2.70  
1022  
1063  
1104  
1130  
1174  
1201  
1246  
1285  
1304  
1345  
1378  
Table 17 48HJ007 Fan Performance Vertical Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
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  
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  
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  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
1542  
1556  
1588  
1626  
1666  
1710  
1756  
1779  
1.71  
1.82  
1.97  
2.16  
2.37  
2.54  
2.70  
3.13  
1607  
1621  
1655  
1694  
1736  
1782  
1.94  
2.06  
2.23  
2.44  
2.68  
2.87  
1667  
1682  
1717  
1758  
2.16  
2.30  
2.49  
2.73  
LEGEND AND NOTES FOR TABLES 16 AND 17  
4. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
LEGEND  
Bhp  
Brake Horsepower Input to Fan  
Factory-Installed Option  
5. Maximum continuous bhp is 2.40 for standard motors, 2.90 for high-  
static motors. 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 ratings shown will not result in nuisance  
tripping or premature motor failure. Unit warranty will not be affected.  
See Evaporator-Fan Motor Data tables on page 20 for additional infor-  
mation.  
FIOP  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2.  
indicates field-supplied motor and drive required.  
3. Motor drive range is 1120 to 1585 rpm for standard motors, 1130 to  
1685 rpm for high-static motors. All other rpms require a field-supplied  
drive.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
7. Interpolation is permissible. Do not extrapolate.  
24  
Table 18 48HJ004 Fan Performance Horizontal Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
0.2  
0.3  
0.4  
0.5  
0.6  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
584  
627  
670  
710  
752  
776  
816  
0.08  
0.13  
0.16  
0.23  
0.27  
0.31  
0.38  
656  
738  
758  
780  
808  
845  
870  
0.12  
0.19  
0.23  
0.28  
0.32  
0.38  
0.43  
734  
800  
812  
840  
868  
891  
924  
0.22  
0.26  
0.29  
0.32  
0.37  
0.42  
0.48  
818  
848  
863  
889  
916  
937  
969  
0.25  
0.29  
0.32  
0.36  
0.41  
0.47  
0.53  
875  
895  
914  
938  
963  
983  
1014  
0.27  
0.31  
0.35  
0.40  
0.45  
0.51  
0.58  
EXTERNAL STATIC PRESSURE (in. wg)  
0.9 1.0  
AIRFLOW  
(Cfm)  
0.7  
0.8  
1.1  
1.2  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
900  
1000  
1100  
1200  
1300  
1400  
1500  
924  
936  
0.32  
0.35  
0.39  
0.45  
0.51  
0.56  
0.63  
953  
977  
1005  
1038  
1061  
1071  
1097  
0.35  
0.39  
0.43  
0.50  
0.56  
0.60  
0.68  
989  
1020  
1052  
1076  
1094  
1108  
1117  
0.38  
0.44  
0.49  
0.53  
0.61  
0.67  
0.70  
1028  
1064  
1100  
1136  
1172  
1208  
1245  
0.42  
0.48  
0.52  
0.59  
0.65  
0.70  
0.74  
1074  
1124  
1163  
1201  
1239  
1278  
1315  
0.45  
0.52  
0.56  
0.61  
0.69  
0.75  
0.80  
1120  
1185  
1225  
1266  
1306  
1347  
1385  
0.50  
0.55  
0.60  
0.64  
0.72  
0.79  
0.85  
960  
988  
1012  
1027  
1056  
Table 19 48HJ004 Fan Performance Horizontal Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
734  
800  
812  
840  
868  
891  
924  
0.22  
0.26  
0.29  
0.32  
0.37  
0.42  
0.48  
875  
895  
914  
938  
963  
983  
1014  
0.27  
0.31  
0.35  
0.40  
0.45  
0.51  
0.58  
953  
977  
1005  
1038  
1061  
1071  
1097  
0.36  
0.39  
0.43  
0.50  
0.56  
0.60  
0.68  
1028  
1064  
1100  
1136  
1172  
1208  
1245  
0.42  
0.48  
0.52  
0.59  
0.65  
0.70  
0.74  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
1155  
1222  
1263  
1306  
1347  
1389  
1428  
0.59  
0.66  
0.71  
0.79  
0.87  
0.95  
1.05  
1186  
1255  
1298  
1341  
1383  
1427  
1467  
0.64  
0.71  
0.77  
0.86  
0.94  
1.03  
1.14  
1215  
1285  
1328  
1373  
1416  
1461  
1502  
0.69  
0.77  
0.83  
0.92  
1.01  
1.11  
1.22  
1240  
1312  
1357  
1402  
1446  
1492  
1534  
0.73  
0.82  
0.88  
0.98  
1.07  
1.18  
1.30  
LEGEND AND NOTES FOR TABLES 18 AND 19  
LEGEND  
4. Maximum continuous bhp is 1.20 for standard motors; 2.40 for high-static  
motors. 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 ratings shown will not result in nuisance tripping or pre-  
mature motor failure. Unit warranty will not be affected. See Evaporator-  
Fan Motor Data tables on page 20 for additional information.  
5. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
Bhp  
Brake Horsepower Input to Fan  
Factory-Installed Option  
FIOP  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2. Motor drive range is 760 to 1090 rpm for standard motors; 1075 to  
1455 rpm for high-static motors. All other rpms require a field-supplied  
drive.  
3. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
6. Interpolation is permissible. Do not extrapolate.  
25  
Table 20 48HJ005 Fan Performance Horizontal Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
0.2  
0.3  
0.4  
0.6  
0.7  
0.8  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
569  
604  
640  
676  
713  
750  
788  
826  
864  
0.18  
0.22  
0.27  
0.32  
0.38  
0.45  
0.52  
0.60  
0.70  
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  
701  
731  
761  
793  
825  
857  
890  
924  
958  
0.29  
0.34  
0.39  
0.45  
0.51  
0.59  
0.67  
0.76  
0.86  
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  
859  
887  
914  
940  
967  
0.46  
0.52  
0.59  
0.65  
0.73  
0.81  
0.91  
1.01  
1.12  
901  
928  
955  
0.52  
0.59  
0.66  
0.73  
0.81  
0.90  
1.01  
1.10  
1.21  
943  
968  
996  
1024  
1051  
1077  
1104  
1132  
1162  
0.58  
0.65  
0.72  
0.81  
0.89  
1.01  
1.07  
1.18  
1.30  
982  
1009  
1037  
1065  
1094  
1125  
997  
1026  
1056  
1087  
EXTERNAL STATIC PRESSURE (in. wg)  
1.1 1.2 1.4  
AIRFLOW  
(Cfm)  
0.9  
1.0  
1.6  
1.8  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
987  
1006  
1033  
1060  
1087  
1114  
1141  
1168  
1197  
0.64  
0.71  
0.79  
0.88  
1.01  
1.07  
1.17  
1.28  
1.39  
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  
1068  
1086  
1104  
1129  
1156  
1183  
1211  
1238  
1265  
0.79  
0.84  
0.93  
1.02  
1.13  
1.23  
1.35  
1.47  
1.59  
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  
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  
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  
1245  
1297  
1320  
1343  
1382  
1398  
1418  
1439  
1466  
1.21  
1.35  
1.48  
1.60  
1.68  
1.80  
1.95  
2.11  
2.27  
Table 21 48HJ005 Fan Performance Horizontal Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
859  
887  
0.46  
0.52  
0.59  
0.65  
0.73  
0.81  
0.91  
1.01  
1.12  
943  
968  
0.58  
0.65  
0.72  
0.81  
0.89  
1.01  
1.07  
1.18  
1.30  
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  
914  
996  
940  
1024  
1051  
1077  
1104  
1132  
1162  
967  
997  
1026  
1056  
1087  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
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  
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  
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  
1245  
1297  
1320  
1343  
1382  
1398  
1418  
1439  
1466  
1.21  
1.35  
1.48  
1.60  
1.68  
1.80  
1.95  
2.11  
2.27  
1292  
1346  
1370  
1393  
1434  
1451  
1471  
1493  
15.21  
1.35  
1.51  
1.65  
1.79  
1.88  
2.01  
2.18  
2.36  
2.54  
LEGEND AND NOTES FOR TABLES 20 AND 21  
LEGEND  
5. Maximum continuous bhp is 1.20 for standard motors; 2.40 for high-static  
motors. 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 ratings shown will not result in nuisance tripping or pre-  
mature motor failure. Unit warranty will not be affected. See Evaporator-  
Fan Motor Data tables on page 20 for additional information.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
Bhp  
FIOP  
Brake Horsepower Input to Fan  
Factory-Installed Option  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2. indicates field-supplied motor and drive required.  
7. Interpolation is permissible. Do not extrapolate.  
3. Motor drive range is 840 to 1185 rpm for standard units; 1075 to 1455 rpm  
for high-static motors. All other rpms require a field-supplied drive.  
4. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
26  
Table 22 48HJ006 Fan Performance Horizontal Discharge Units With Standard Motor  
Single-Phase Units  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
Bhp  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
741  
783  
825  
885  
928  
0.38  
0.45  
0.53  
0.63  
0.73  
0.84  
0.97  
1.10  
1.25  
1.30  
1.43  
798  
838  
878  
942  
982  
1022  
1063  
1104  
1130  
1174  
1201  
0.43  
0.51  
0.60  
0.73  
0.83  
0.94  
1.10  
1.20  
1.27  
1.37  
1.50  
895  
933  
969  
0.54  
0.63  
0.72  
0.90  
1.02  
1.12  
1.18  
1.23  
1.37  
1.57  
1.65  
990  
1016  
1049  
1139  
1160  
1188  
1196  
1229  
1264  
1305  
1338  
0.67  
0.75  
0.84  
1.05  
1.11  
1.22  
1.27  
1.41  
1.56  
1.63  
1.75  
1073  
1102  
1134  
1193  
1223  
1254  
1272  
1306  
1340  
1373  
1402  
0.80  
0.90  
1.00  
1.14  
1.24  
1.36  
1.45  
1.53  
1.66  
1.84  
1.99  
1154  
1182  
1206  
1276  
1301  
1329  
1354  
1363  
1397  
1440  
1469  
0.95  
1.04  
1.14  
1.30  
1.38  
1.44  
1.58  
1.70  
1.86  
1.95  
2.04  
1218  
1251  
1281  
1341  
1374  
1396  
1413  
1434  
1459  
1502  
1524  
1.12  
1.20  
1.31  
1.40  
1.53  
1.66  
1.75  
1.81  
1.88  
2.06  
2.24  
1295  
1310  
1342  
1413  
1437  
1460  
1475  
1487  
1520  
1552  
1585  
1.36  
1.40  
1.48  
1.55  
1.62  
1.68  
1.73  
1.85  
2.07  
2.24  
2.42  
1360  
1385  
1398  
1474  
1490  
1509  
1529  
1554  
1576  
1604  
1638  
1.40  
1.49  
1.53  
1.58  
1.67  
1.77  
1.92  
2.07  
2.24  
2.42  
2.60  
1047  
1084  
1121  
1140  
1159  
1196  
1245  
1284  
971  
1015  
1060  
1104  
1138  
1183  
3-Phase Units  
EXTERNAL STATIC PRESSURE (in. wg)  
0.6 0.8 1.0  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
1.2  
1.4  
1.6  
Bhp  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
741  
783  
825  
885  
928  
0.38  
0.45  
0.53  
0.63  
0.73  
0.84  
0.97  
1.10  
1.25  
1.30  
1.43  
798  
838  
878  
942  
982  
1022  
1063  
1104  
1130  
1174  
1201  
0.43  
0.51  
0.60  
0.73  
0.83  
0.94  
1.10  
1.20  
1.27  
1.37  
1.50  
895  
933  
969  
0.54  
0.63  
0.72  
0.90  
1.02  
1.12  
1.18  
1.23  
1.37  
1.57  
1.65  
990  
1016  
1049  
1139  
1160  
1188  
1196  
1229  
1264  
1305  
1338  
0.67  
0.75  
0.84  
1.05  
1.11  
1.22  
1.27  
1.41  
1.56  
1.63  
1.75  
1073  
1102  
1134  
1193  
1223  
1254  
1272  
1306  
1340  
1373  
1402  
0.80  
0.90  
1.00  
1.14  
1.24  
1.36  
1.45  
1.53  
1.66  
1.84  
1.99  
1154  
1182  
1206  
1276  
1301  
1329  
1354  
1363  
1397  
1440  
1469  
0.95  
1.04  
1.14  
1.30  
1.38  
1.44  
1.58  
1.70  
1.86  
1.95  
2.04  
1218  
1251  
1281  
1341  
1374  
1396  
1413  
1434  
1459  
1502  
1524  
1.12  
1.20  
1.31  
1.40  
1.53  
1.66  
1.75  
1.81  
1.88  
2.06  
2.24  
1295  
1310  
1342  
1413  
1437  
1460  
1475  
1487  
1520  
1552  
1585  
1.36  
1.40  
1.48  
1.55  
1.62  
1.68  
1.73  
1.85  
2.07  
2.24  
2.42  
1360  
1385  
1398  
1474  
1490  
1509  
1529  
1554  
1576  
1604  
1638  
1.40  
1.49  
1.53  
1.58  
1.67  
1.77  
1.92  
2.07  
2.24  
2.42  
2.60  
1047  
1084  
1121  
1140  
1159  
1196  
1245  
1284  
971  
1015  
1060  
1104  
1138  
1183  
Table 23 48HJ006 Fan Performance Horizontal Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
789  
826  
0.40  
0.46  
0.54  
0.62  
0.72  
0.82  
0.93  
1.05  
1.18  
1.32  
1.48  
896  
931  
0.53  
0.61  
0.69  
0.78  
0.88  
0.98  
1.10  
1.22  
1.36  
1.45  
1.68  
990  
1020  
1051  
1084  
1119  
1154  
1192  
1225  
1260  
1296  
1331  
0.67  
0.75  
0.84  
0.93  
1.04  
1.16  
1.29  
1.43  
1.57  
1.73  
1.89  
1072  
1101  
1133  
1163  
1194  
1226  
1259  
1294  
1330  
1365  
1400  
0.83  
0.91  
1.01  
1.10  
1.21  
1.33  
1.47  
1.62  
1.78  
1.94  
2.12  
1153  
1178  
1205  
1235  
1266  
1297  
1327  
1359  
1392  
1426  
1461  
1.00  
1.09  
1.18  
1.29  
1.40  
1.53  
1.66  
1.80  
1.97  
2.15  
2.34  
865  
966  
905  
1002  
1037  
1072  
1108  
1145  
1183  
1222  
1262  
945  
984  
1024  
1064  
1104  
1145  
1186  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
(Cfm)  
1.2  
1.4  
1.8  
2.0  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1221  
1252  
1278  
1303  
1330  
1362  
1393  
1423  
1454  
1485  
1518  
1.17  
1.27  
1.37  
1.48  
1.59  
1.73  
1.87  
2.02  
2.18  
2.36  
2.55  
1256  
1311  
1345  
1371  
1396  
1422  
1452  
1483  
1515  
1544  
1574  
1.30  
1.45  
1.57  
1.69  
1.80  
1.94  
2.08  
2.24  
2.41  
2.59  
2.78  
1283  
1340  
1397  
1433  
1460  
1485  
1510  
1538  
1571  
1604  
1633  
1.32  
1.58  
1.76  
1.90  
2.03  
2.16  
2.31  
2.46  
2.64  
2.84  
3.03  
1303  
1330  
1424  
1480  
1517  
1544  
1570  
1594  
1623  
1657  
1692  
1.22  
1.61  
1.89  
2.09  
2.25  
2.40  
2.55  
2.71  
2.88  
3.07  
3.28  
1345  
1373  
1470  
1528  
1566  
1594  
1620  
1645  
1676  
1710  
1746  
1.34  
1.77  
2.08  
2.30  
2.47  
2.64  
2.80  
2.98  
3.17  
3.38  
3.61  
LEGEND AND NOTES FOR TABLES 22 AND 23  
LEGEND  
5. Maximum continuous bhp is 1.30 for single-phase standard units, 2.40 for  
3-phase standard motors, and 2.90 for high-static motors. 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  
ratings shown will not result in nuisance tripping or premature motor fail-  
ure. Unit warranty will not be affected. See Evaporator-Fan Motor Data  
tables on page 20 for additional information.  
Bhp  
FIOP  
Brake Horsepower Input to Fan  
Factory-Installed Option  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2. indicates field-supplied motor and drive required.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
3. Motor drive range is 1020 to 1460 rpm for single-phase standard units,  
1120 to 1585 for 3-phase standard units, and 1300 to 1685 for high-static  
units. All other rpms require a field-supplied drive.  
4. Values include losses for filters, unit casing, and wet coils. See page 28  
for accessory/FIOP static pressure information.  
7. Interpolation is permissible. Do not extrapolate.  
27  
Table 24 48HJ007 Fan Performance Horizontal Discharge Units With Standard Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
885  
928  
971  
0.63  
0.73  
0.84  
0.97  
1.10  
1.25  
1.30  
1.43  
1.58  
1.76  
1.82  
1.95  
2.20  
942  
982  
0.73  
0.83  
0.94  
1.10  
1.20  
1.27  
1.37  
1.50  
1.67  
1.80  
1.85  
2.05  
2.30  
1047  
1084  
1121  
1140  
1159  
1196  
1245  
1284  
1312  
1354  
1374  
1412  
1451  
0.90  
1.02  
1.12  
1.18  
1.23  
1.37  
1.57  
1.65  
1.76  
1.95  
2.12  
2.32  
2.40  
1139  
1160  
1188  
1196  
1229  
1264  
1305  
1338  
1366  
1403  
1459  
1496  
1534  
1.05  
1.11  
1.22  
1.27  
1.41  
1.56  
1.63  
1.75  
1.96  
2.14  
2.25  
2.45  
2.66  
1193  
1223  
1254  
1272  
1306  
1340  
1373  
1402  
1435  
1474  
1514  
1529  
1560  
1.14  
1.24  
1.36  
1.45  
1.53  
1.66  
1.84  
1.99  
2.10  
2.21  
2.42  
2.61  
2.81  
1276  
1301  
1329  
1354  
1363  
1397  
1440  
1469  
1494  
1536  
1570  
1603  
1611  
1.30  
1.38  
1.44  
1.58  
1.70  
1.86  
1.95  
2.04  
2.19  
2.46  
2.66  
2.87  
3.01  
1341  
1374  
1396  
1413  
1434  
1459  
1502  
1524  
1552  
1584  
1624  
1671  
1.40  
1.53  
1.66  
1.75  
1.81  
1.88  
2.06  
2.24  
2.40  
2.61  
2.85  
3.03  
1413  
1437  
1460  
1475  
1487  
1520  
1552  
1585  
1616  
1646  
1677  
1.55  
1.62  
1.68  
1.73  
1.85  
2.07  
2.24  
2.42  
2.63  
2.83  
2.99  
1474  
1490  
1509  
1529  
1554  
1576  
1604  
1638  
1671  
1706  
1.58  
1.67  
1.77  
1.92  
2.07  
2.24  
2.42  
2.60  
2.80  
2.97  
1022  
1063  
1104  
1130  
1174  
1201  
1243  
1285  
1304  
1345  
1378  
1015  
1060  
1104  
1138  
1183  
1210  
1254  
1274  
1318  
1362  
Table 25 48HJ007 Fan Performance Horizontal Discharge Units With High-Static Motor  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.2  
0.4  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
1.8  
2.0  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
942 0.73 1047 0.90 1139 1.05 1193 1.14 1276 1.30 1341 1.40 1413 1.55 1474 1.58 1522 1.74 1566 1.89  
982 0.83 1084 1.02 1160 1.11 1223 1.24 1301 1.38 1374 1.53 1437 1.62 1490 1.67 1538 1.84 1583 2.00  
1022 0.94 1121 1.12 1188 1.22 1264 1.36 1329 1.44 1396 1.66 1460 1.68 1509 1.77 1558 1.95 1603 2.12  
1063 1.10 1140 1.18 1196 1.27 1272 1.45 1354 1.58 1413 1.75 1475 1.73 1529 1.92 1578 2.11 1624 2.30  
1104 1.20 1159 1.23 1229 1.41 1306 1.53 1363 1.70 1434 1.81 1487 1.85 1554 2.07 1604 2.28 1651 2.48  
1130 1.27 1196 1.37 1264 1.56 1340 1.66 1397 1.86 1459 1.88 1520 2.07 1576 2.24 1627 2.46 1674 2.68  
1174 1.37 1245 1.57 1305 1.63 1373 1.84 1440 1.95 1502 2.06 1552 2.24 1604 2.42 1656 2.66 1704 2.90  
1201 1.50 1284 1.65 1338 1.75 1402 1.99 1469 2.04 1524 2.24 1585 2.42 1638 2.60 1691 2.86 1740 3.12  
1246 1.67 1312 1.76 1366 1.96 1435 2.10 1494 2.19 1552 2.40 1616 2.63 1671 2.80 1726 3.09 1775 3.35  
1285 1.80 1354 1.95 1403 2.14 1474 2.21 1536 2.46 1584 2.61 1646 2.83 1706 2.97 1761 3.27  
1304 1.85 1374 2.12 1459 2.25 1514 2.42 1570 2.66 1624 2.85 1677 2.99 1739 3.33 1795 3.67  
1345 2.05 1412 2.32 1496 2.54 1529 2.61 1603 2.87 1671 3.03 1742 3.43  
1378 2.30 1451 2.40 1534 2.66 1560 2.81 1611 3.01 1692 3.49 1764 3.95  
LEGEND AND NOTES FOR TABLES 24 AND 25  
LEGEND  
5. Maximum continuous bhp is 2.4 for standard motors; 2.9 for high-static  
motors. 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 ratings shown will not result in nuisance tripping or pre-  
mature motor failure. Unit warranty will not be affected. See Evaporator-  
Fan Motor Data tables on page 20 for additional information.  
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier  
representative to verify.  
Bhp  
FIOP  
Brake Horsepower Input to Fan  
Factory-Installed Option  
NOTES:  
1. Boldface indicates field-supplied drive required. (See Note 3.)  
2. indicates field-supplied motor and drive required.  
7. Interpolation is permissible. Do not extrapolate.  
3. Motor drive range is 1120 to 1585 rpm for standard motors; 1300 to  
1685 rpm for high-static motors. All other rpms require a field-supplied  
drive.  
4. Values include losses for filters, unit casing, and wet coils. See below for  
accessory/FIOP static pressure information.  
Table 26 Economizer Static Pressure Drop  
Table 27 FIOP MoistureMiser Dehumidification  
(in. wg)  
Package Static Pressure Drop (in. wg)  
CFM PER TON  
CFM  
UNIT SIZE  
48HJ  
E/F004  
D/E/F005  
D/E/F006  
D/E/F007  
UNIT  
UNIT  
NOMINAL TONS  
300  
400  
.07  
.12  
.15  
.20  
500  
900 1200 1400 1600 1800 2000 2200 2400 2600  
Durablade .05 .05 .05 .05 .05 .05 .05 .05 .05  
EconoMi$er .05 .10 .13 .17 .22 .27 .32 .39 .45  
3
4
5
6
.04  
.07  
.09  
.12  
.09  
.15  
.21  
.28  
LEGEND  
FIOP Factory-Installed Option  
28  
b. Make sure that air filter(s) is in place.  
c. Make sure that condensate drain trap is filled with  
water to ensure proper drainage.  
PRE-START-UP  
d. Make sure that all tools and miscellaneous loose  
parts have been removed.  
Failure to observe the following warnings could result in  
serious personal injury:  
1. Follow recognized safety practices and wear protec-  
tive goggles when checking or servicing refrigerant  
system.  
2. Do not operate compressor or provide any electric  
power to unit unless compressor terminal cover is in  
place and secured.  
START-UP  
Unit Preparation Make sure that unit has been in-  
stalled in accordance with installation instructions and applica-  
ble codes.  
Return-Air Filters Make sure correct filters are in-  
stalled in unit (see Table 1). Do not operate unit without return-  
air filters.  
3. Do not remove compressor terminal cover until all  
electrical sources are disconnected.  
4. Relieve all pressure from system before touching or  
disturbing anything inside terminal box if refrigerant  
leak is suspected around compressor terminals.  
Outdoor-Air Inlet Screens Outdoor-air inlet screen  
must be in place before operating unit.  
5. Never attempt to repair soldered connection while re-  
frigerant system is under pressure.  
6. Do not use torch to remove any component. System  
contains oil and refrigerant under pressure. To remove  
a component, wear protective goggles and proceed as  
follows:  
Compressor Mounting Compressors are internally  
spring mounted. Do not loosen or remove compressor hold-  
down bolts.  
Internal Wiring Check all electrical connections in  
unit control boxes. Tighten as required.  
a. Shut off electrical power and then gas to unit.  
b. Reclaim refrigerant to relieve all pressure from  
system using both high- and low-pressure ports.  
c. Cut component connection tubing with tubing  
cutter and remove component from unit.  
d. Carefully unsweat remaining tubing stubs  
when necessary. Oil can ignite when exposed  
to torch flame.  
Refrigerant Service Ports Each unit system has  
3 Schrader-type service ports: one on the suction line, one on  
the liquid line, and one on the compressor discharge line. Be  
sure that caps on the ports are tight. Two additional Schrader  
valves are located under the high-pressure and low-pressure  
switches, respectively.  
HIGH FLOW REFRIGERANT VALVES — Two high flow  
valves are located on the hot gas tube coming out of the com-  
pressor and the suction tube going into the compressor. Large  
black plastic caps identify these valves. These valves have  
O-rings inside which screw the cap onto a brass body to pre-  
vent leaks. No field access to these valves is available at this  
time. Ensure the plastic caps remain on the valves and are tight  
or the possibility of refrigerant leakage could occur.  
Proceed as follows to inspect and prepare the unit for initial  
start-up:  
1. Remove all access panels.  
2. Read and follow instructions on all WARNING, CAU-  
TION, and INFORMATION labels attached to, or  
shipped with, unit.  
Compressor Rotation On 3-phase units with scroll  
compressors, it is important to be certain compressor is rotating  
in the proper direction. To determine whether or not compres-  
sor is rotating in the proper direction:  
1. Connect service gages to suction and discharge pressure  
fittings.  
2. Energize the compressor.  
3. The suction pressure should drop and the discharge pres-  
sure should rise, as is normal on any start-up.  
3. Make the following inspections:  
a. Inspect for shipping and handling damages such as  
broken lines, loose parts, or disconnected wires, etc.  
b. Inspect for oil at all refrigerant tubing connections  
and on unit base. Detecting oil generally indicates  
a refrigerant leak. Leak-test all refrigerant tubing  
connections using electronic leak detector, halide  
torch, or liquid-soap solution.  
c. Inspect all field- and factory-wiring connections.  
Be sure that connections are completed and tight.  
Be sure that wires are not in contact with refriger-  
ant tubing or sharp edges.  
d. Inspect coil fins. If damaged during shipping and  
handling, carefully straighten fins with a fin comb.  
If the suction pressure does not drop and the discharge pres-  
sure does not rise to normal levels:  
1. Note that the evaporator fan (006 and 007 only) is proba-  
bly also rotating in the wrong direction.  
2. Turn off power to the unit, tag disconnect.  
3. Reverse any two of the unit power leads.  
4. Reenergize to the compressor. Check pressures.  
The suction and discharge pressure levels should now move  
to their normal start-up levels.  
4. Verify the following conditions:  
a. Make sure that condenser-fan blade are correctly  
positioned in fan orifice. See Condenser-Fan  
Adjustment section on page 34 for more details.  
29  
NOTE: When the compressor is rotating in the wrong direc-  
tion, the unit will make an elevated level of noise and will not  
provide cooling.  
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.  
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.  
Check unit charge. Refer to Refrigerant Charge section on  
page 34.  
Reset thermostat at a position above room temperature.  
Compressor will shut off. Evaporator fan will shut off after a  
30-second delay.  
4. The induced-draft motor will start.  
5. After a call for heating, the main burners should light  
within 5 seconds. If the burner does not light, then there is  
a 22-second delay before another 5-second try. If the  
burner still does not light, the time delay is repeated. If the  
burner does not light within 15 minutes, there is a lock-  
out. To reset the control, break the 24 v power to W1.  
6. The evaporator-fan motor will turn on 45 seconds after  
burner ignition.  
7. The evaporator-fan motor will turn off in 45 seconds after  
the thermostat temperature is satisfied.  
8. Adjust airflow to obtain a temperature rise within the  
range specified on the unit nameplate.  
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. Units are equipped with Cycle-  
LOC™ protection device. Unit shuts down on any safety trip,  
and indicator light on thermostat comes on. Check reason for  
all safety trips.  
Compressor restart is accomplished by manual reset at the  
thermostat by turning the selector switch to OFF and then to  
ON position.  
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 (light-emitting diode)  
is observed, the evaporator-fan on/off delay has been modified.  
If the limit switch trips at the start of the heating cycle dur-  
ing the evaporator on delay, the time period of the on delay for  
the next cycle will be 5 seconds less than the time at which the  
switch tripped. (Example: If the limit switch trips at 30 sec-  
onds, the evaporator-fan on delay for the next cycle will occur  
at 25 seconds.) To prevent short-cycling, a 5-second reduction  
will only occur if a minimum of 10 minutes has elapsed since  
the last call for heating.  
The evaporator-fan off delay can also be modified. Once the  
call for heating has ended, there is a 10-minute period during  
which the modification can occur. If the limit switch trips dur-  
ing 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 po-  
sition. Resetting heating selector lever below room temperature  
will temporarily shut unit off until space temperature falls be-  
low thermostat setting.  
Main Burners Main burners are factory set and should  
require no adjustment.  
TO CHECK ignition of main burners and heating controls,  
move thermostat set point above room temperature and verify  
that the burners light and evaporator fan is energized. Check  
heating effect, then lower the thermostat setting below the  
room temperature and verify that the burners and evaporator  
fan turn off.  
Refer to Table 28 for the correct orifice to use at high  
altitudes.  
Table 28 Altitude Compensation*  
72,000 AND 115,000  
150,000 BTUH  
BTUH NOMINAL  
NOMINAL INPUT  
INPUT  
ELEVATION  
Natural  
Gas  
Liquid  
Propane  
Orifice  
Size†  
Natural  
Gas  
Orifice  
Size†  
Liquid  
Propane  
Orifice  
Size†  
(ft)  
Orifice  
Size†  
0-2,000  
2,000  
3,000  
4,000  
5,000  
6,000  
7,000  
8,000  
9,000  
10,000  
11,000  
12,000  
13,000  
14,000  
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  
Safety Relief A soft-solder joint at the suction service  
Schrader port provides pressure relief under abnormal tempera-  
ture and pressure conditions.  
Ventilation (Continuous Fan) Set fan and system  
selector switches at ON and OFF positions, respectively.  
Evaporator fan operates continuously to provide constant air  
circulation. When the evaporator-fan selector switch is turned  
to the OFF position, there is a 30-second delay before the fan  
turns off.  
Operating Sequence  
COOLING, UNITS WITHOUT ECONOMIZER — When  
thermostat calls for cooling, terminals G and Y1 and the com-  
pressor contactor (C) are energized. 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, 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.  
*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 local Carrier distributor.  
Heating  
1. Purge gas supply line of air by opening union ahead of  
the gas valve. If gas odor is detected, tighten union and  
wait 5 minutes before proceeding.  
30  
HEATING, UNITS WITHOUT ECONOMIZER — When  
the thermostat calls for heating, terminal 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. 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 out-  
door-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.  
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. When additional heat is need-  
ed, W2 energized and the high-fire solenoid on the main gas  
valve (MGV) is energized. When the thermostat is satisfied  
and W1 is deenergized, the IFM stops after a 45-second time-  
off delay. The economizer damper then moves to the fully  
closed position. When using continuous fan, the damper will  
remain in the minimum position.  
UNITS WITH MOISTUREMISER DEHUMIDIFICATION  
PACKAGE — When thermostat calls for cooling, terminals G  
and Y1 and the compressor contactor C1 is energized. The in-  
door (evaporator) fan motor (IFM), compressor, and outdoor  
(condenser) fan motor (OFM) start. The OFM runs continuous-  
ly while the unit is in cooling. As shipped from the factory,  
MoistureMiser dehumidification circuit is always energized. If  
MoistureMiser circuit modulation is desired, a field-installed,  
wall-mounted humidistat is required.  
If the MoistureMiser humidistat is installed and calls for the  
MoistureMiser subcooler coil to operate, the humidistat inter-  
nal switch closes. This energizes and closes the liquid line sole-  
noid valve coil (LLSV) of the MoistureMiser circuit, forcing  
the hot liquid refrigerant of the liquid line to enter the subcooler  
coil (see Fig. 39). As the hot liquid passes through the subcool-  
er coil, it is exposed to the cold supply airflow coming off from  
the evaporator coil and the liquid is further cooled to a temper-  
ature approaching the evaporator coil leaving-air temperature.  
The state of the refrigerant leaving the subcooler coil is a high-  
ly subcooled liquid refrigerant. The liquid then enters a thermo-  
static expansion valve (TXV) where the liquid is dropped to a  
lower pressure. The TXV does not have a pressure drop great  
enough to change the liquid to a 2-phase fluid. The TXV can  
throttle the pressure drop of the liquid refrigerant and maintain  
proper conditions at the compressor suction valve over a wide  
range of operating conditions. The liquid then enters a second  
fixed restrictor expansion device for a second pressure drop to  
a 2-phase fluid. The liquid proceeds to the evaporator coil at a  
temperature lower than normal cooling operation. This lower  
temperature is what increases the latent capacity of the rooftop.  
The 2-phase refrigerant passes through the evaporator and is  
changed into a vapor. The air passing over the evaporator coil  
will become colder than during normal operation as a result of  
the colder refrigerant temperatures. However, as it passes over  
the subcooler coil, the air will be warmed slightly.  
As the refrigerant leaves the evaporator, the refrigerant  
passes a low-pressure switch in the suction line. This low-  
pressure switch will de-activate the MoistureMiser package  
when the suction pressure reaches 60 psig. The low-pressure  
switch is an added safety device to protect against evaporator  
coil freeze-up. The low-pressure switch will only de-activate  
and open the liquid line solenoid valve in the MoistureMiser  
circuit. The compressors will continue to run as long as there is  
a call for cooling, regardless of the position of the low-pressure  
switch. The solenoid valve and the MoistureMiser package will  
be re-activated only when the call for cooling has been satis-  
fied, the low-pressure switch has closed, and a new call for  
cooling exists. The crankcase heaters on the scroll compressor  
provide additional protection for the compressor due to the ad-  
ditional refrigerant charge in the subcooler.  
When the outdoor-air temperature is below the OAT setting  
and the thermostat calls for cooling, the economizer damper  
move to the minimum position. If the supply-air temperature is  
above 57 F, the damper continues to open until it reaches the  
fully-open position or until the supply-air temperature drops  
below 52 F.  
When the supply-air temperature falls 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-fan motor (IFM) is energized and the  
EconoMi$er damper modulates to minimum position. The  
compressor contactor is energized starting the compressor and  
outdoor-fan motor (OFM). After the thermostat is satisfied, the  
damper modulates to the fully closed position when the IFM is  
deenergized.  
When the OAT is below the ECON SP set point and the  
room thermostat calls for Stage 1 cooling (R to G + Y1), the  
EconoMi$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 modules closed to reduce  
the amount of outdoor air. When the SAT is between 53 and  
57 F, the EconoMi$er maintains its position.  
When the humidistat is satisfied, the humidistat internal  
switch opens cutting power to and opening the LLSV. The re-  
frigerant is routed back through the evaporator and the sub-  
cooler coil is removed from the refrigerant loop.  
When the thermostat is satisfied, C1 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 IFM will run continuously.  
HEATING, UNITS WITH ECONOMIZER — When the ther-  
mostat calls for heating, terminal W1 is energized. The  
31  
Fig. 39 MoistureMiser Option Operation  
32  
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.  
SERVICE  
When servicing unit, shut off all electrical power to unit to  
avoid shock hazard or injury from rotating parts.  
Cleaning Inspect unit interior at the beginning of heat-  
ing and cooling season and as operating conditions require.  
EVAPORATOR COIL  
1. Turn unit power off, tag disconnect. 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 15 for additional information.  
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  
material. Flush condensate pan after completion.  
5. Reinstall economizer and filters.  
6. Reconnect wiring.  
Fig. 40 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 Coil — Wash coil with commercial coil cleaner. It  
is not necessary to remove top panel.  
2-Row Coils  
Clean coil as follows:  
1. Turn off unit power, tag disconnecct.  
2. Remove top panel screws on condenser end of unit.  
3. Remove condenser coil corner post. See Fig. 40. To hold  
top panel open, place coil corner post between top panel  
and center post. See Fig. 41.  
4. Remove screws securing coil to compressor plate and  
compressor access panel.  
Fig. 41 Propping Up Top 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. 42.  
6. Use a water hose or other suitable equipment to flush  
down between the 2 coil sections to remove dirt and de-  
bris. Clean the outer surfaces with a stiff brush in the nor-  
mal manner.  
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.  
OUTDOOR-AIR INLET SCREENS — Clean screen with  
steam or hot water and a mild detergent. Do not use disposable  
filters in place of screen.  
Lubrication  
Fig. 42 Separating Coil Sections  
COMPRESSORS — Each compressor is charged with correct  
amount of oil at the factory.  
33  
Dehumidification package, fully evacuate, recover, and re-  
charge the system to the nameplate specified charge level.  
Condenser-Fan Adjustment (Fig. 43) Shut off  
unit power supply. Remove condenser-fan assembly (grille,  
motor, motor cover, and fan) and loosen fan hub setscrews.  
Adjust fan height as shown in Fig. 43. Tighten setscrews and  
replace condenser-fan assembly.  
To check or adjust refrigerant charge on systems using the  
MoistureMiser Dehumidification package, charge per Fig. 48-  
51. The subcooler MUST be energized to use the charging  
charts. The charts reference a liquid pressure (psig) and  
temperature at a point between the condenser coil and the  
subcooler coil. A tap is provided on the unit to measure liquid  
pressure entering the subcooler.  
IMPORTANT: The subcooler charging charts (Fig. 48-  
51) are to be used ONLY with units having the optional  
MoistureMiser subcooling option. DO NOT use standard  
charge (Fig. 44-47) for units with MoistureMiser option,  
and DO NOT use Fig. 48-51 for standard units.  
UNIT 48HJ  
004-006 and 007 (208/230 V)  
007 (460 and 575 V)  
FAN HEIGHT — “A(in.)  
2.75  
3.50  
Fig. 43 Condenser-Fan Adjustment  
Economizer Adjustment Refer to Optional Econo-  
mizer sections on pages 12 and 15.  
Evaporator Fan Belt Inspection Check condition  
of evaporator belt or tension during heating and cooling inspec-  
tions or as conditions require. Replace belt or adjust as necessary.  
High-Pressure Switch The high-pressure switch  
contains a Schrader core depressor, and is located on the com-  
pressor hot gas line. This switch opens at 428 psig and closes at  
320 psig. No adjustments are necessary.  
Loss-of-Charge Switch The loss-of-charge switch  
contains a Schrader core depressor, and is located on the com-  
pressor liquid line. This switch opens at 7 psig and closes at  
22 psig. No adjustments are necessary.  
Freeze-Stat The freeze-stat is a bimetal temperature-  
sensing switch that is located on the “hair-pin” end of the evap-  
orator coil. The switch protects the evaporator coil from freeze-  
up due to lack of airflow. The switch opens at 30 F and closes  
at 45 F. No adjustments are necessary.  
Refrigerant Charge Amount of refrigerant charge is  
listed on unit nameplate (also refer to Table 1). Refer to Carrier  
GTAC2-5 Charging, Recovery, Recycling, and Reclamation  
training manual and the following procedures.  
Unit panels must be in place when unit is operating during  
charging procedure. Unit must operate a minimum of 10 min-  
utes before checking or adjusting referigerant charge.  
Fig. 44 Cooling Charging Chart,  
Standard 48HJ004  
An accurate superheat, thermocouple- or thermistor-type  
thermometer, and a gage manifold are required when using the  
superheat charging method for evaluating the unit charge. Do  
not use mercury or small dial-type thermometers because they  
are not adequate for this type of measurement.  
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. 44-47, vary refrigerant until the conditions of the  
charts 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 conditions. Accu-  
rate 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 af-  
fect the reading. Indoor-air cfm must be within the normal op-  
erating range of the unit.  
MOISTUREMISER SYSTEM CHARGING — The system  
charge for units with the MoistureMiser option is greater than  
that of the standard unit alone. The charge for units with this  
option is indicated on the unit nameplate drawing. Also refer  
to Fig. 48-51. To charge systems using the MoistureMiser  
Fig. 45 Cooling Charging Chart,  
Standard 48HJ005  
34  
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. 46):  
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75 F  
Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 psig  
Suction Temperature should be. . . . . . . . . . . . . . . . . . . . . . .48 F  
(Suction temperature may very ± 5 F.)  
If a charging device is used, temperature and pressure read-  
ings must be accomplished using the charging charts.  
TO USE COOLING CHARGING CHARTS, UNITS  
WITH MOISTUREMISER DEHUMIDIFICTION PACK-  
AGE — Refer to charts (Fig. 48-51) to determine the proper  
leaving condenser pressure and temperature.  
Example (Fig. 48):  
Leaving Condenser Pressure. . . . . . . . . . . . . . . . . . . . . 250 psig  
Leaving Condenser Temperature . . . . . . . . . . . . . . . . . . . 105 F  
NOTE: The MoistureMiser subcooler MUST be energized to  
use the charging charts.  
Flue Gas Passageways To inspect the flue collec-  
tor box and upper areas of the heat exchanger:  
1. Remove the combustion blower wheel and motor assem-  
bly according to directions in Combustion-Air Blower  
section below.  
Fig. 46 Cooling Charging Chart,  
Standard 48HJ006  
2. Remove the 3 screws holding the blower housing to the  
flue cover.  
3. Remove the flue cover to inspect the heat exchanger.  
4. Clean all surfaces as required using a wire brush.  
Combustion-Air Blower Clean periodically to en-  
sure proper airflow and heating efficiency. Inspect blower  
wheel every fall and periodically during heating season. For the  
first heating season, inspect blower wheel bimonthly to deter-  
mine proper cleaning frequency.  
To inspect blower wheel, remove draft hood and screen.  
Shine a flashlight into opening to inspect wheel. If cleaning is  
required, remove motor and wheel as follows:  
1. Slide burner access panel out.  
2. Remove the 5 screws that attach induced-draft motor as-  
sembly to the vestibule cover.  
3. Slide the motor and blower wheel assembly out of the  
blower housing. The blower wheel can be cleaned at this  
point. If additional cleaning is required, continue with  
Steps 4 and 5.  
4. To remove blower from the motor shaft, by 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.  
Fig. 47 Cooling Charging Chart,  
Standard 48HJ007  
6. To reinstall, reverse the procedure outlined above.  
Limit Switch Remove blower access panel (Fig. 5).  
TO USE COOLING CHARGING CHART, STANDARD  
UNIT — Take the outdoor ambient temperature and read  
the suction pressure gage. Refer to charts to determine what  
Limit switch is located on the fan deck.  
35  
CONDENSER FAN MUST BE OPERATING  
CONDENSER FAN MUST BE OPERATING  
Fig. 48 Cooling Charging Chart, 48HJ004 with  
Optional MoistureMiser Dehumidification Package  
Fig. 50 Cooling Charging Chart, 48HJ006 with  
Optional MoistureMiser Dehumidification Package  
CONDENSER FAN MUST BE OPERATING  
CONDENSER FAN MUST BE OPERATING  
Fig. 51 Cooling Charging Chart, 48HJ007 with  
Optional MoistureMiser Dehumidification Package  
Fig. 49 Cooling Charging Chart, 48HJ005 with  
Optional MoistureMiser Dehumidification Package  
36  
9. Remove the gas valve bracket.  
10. Slide the burner tray out of the unit (Fig. 53).  
11. To reinstall, reverse the procedure outlined above.  
Burner Ignition Unit is equipped with a direct spark  
ignition 100% lockout system. Integrated Gas Unit Controller  
(IGC) is located in the control box (Fig. 10). A single LED on  
the IGC provides a visual display of operational or sequential  
problems when the power supply is uninterrupted. The LED  
can be observed through the viewport. When a break in power  
occurs, the IGC will be reset (resulting in a loss of fault history)  
and the evaporator fan on/off times delay will be reset. During  
servicing, refer to the label on the control box cover or Table 29  
for an explanation of LED error code descriptions.  
INDUCED-  
DRAFT  
ROLLOUT  
SWITCH  
MOTOR  
MOUNTING  
PLATE  
If lockout occurs, unit may be reset by interrupting power  
supply to unit for at least 5 seconds.  
Table 29 LED Error Code Description*  
BURNER  
SECTION  
LED INDICATION  
ON  
ERROR CODE DESCRIPTION  
Normal Operation  
FLUE  
EXHAUST  
VESTIBULE  
PLATE  
OFF  
Hardware Failure  
Evaporator Fan On/Off Delay Modified  
Limit Switch Fault  
Flame Sense Fault  
4 Consecutive Limit Switch Faults  
Ignition Lockout Fault  
Induced-Draft Motor Fault  
Rollout Switch Fault  
Internal Control Fault  
INDUCED-  
DRAFT  
1 Flash†  
2 Flashes  
3 Flashes  
4 Flashes  
5 Flashes  
6 Flashes  
7 Flashes  
8 Flashes  
BLOWER  
HOUSING  
MOTOR  
MANIFOLD  
PRESSURE  
TAP  
GAS  
VALVE  
Fig. 52 Burner Section Details  
LEGEND  
LED Light-Emitting Diode  
*A 3-second pause exists between LED error code flashes. If more  
than one error code exists, all applicable codes will be displayed in  
numerical sequence.  
Indicates a code that is not an error. The unit will continue to oper-  
ate when this code is displayed.  
IMPORTANT: Refer to Troubleshooting Tables 30-36 for addi-  
tional information.  
Main Burners At the beginning of each heating sea-  
son, inspect for deterioration or blockage due to corrosion or  
other causes. Observe the main burner flames and adjust, if  
necessary.  
Fig. 53 Burner Tray Details  
CLEANING AND ADJUSTMENT  
When servicing gas train, do not hit or plug orifice spuds.  
1. Remove burner rack from unit as described above.  
2. Inspect burners and, if dirty, remove burners from rack.  
3. Using a soft brush, clean burners and cross-over port as  
required.  
REMOVAL AND REPLACEMENT OF GAS TRAIN  
(See Fig. 52 and 53)  
1. Shut off manual gas valve.  
2. Shut off power to unit, tag disconnect.  
3. Remove compressor access panel.  
4. Adjust spark gap. See Fig. 54.  
5. Reinstall burners on rack.  
4. Slide out burner compartment side panel.  
5. Disconnect gas piping at unit gas valve.  
6. Remove wires connected to gas valve. Mark each wire.  
7. Remove induced-draft motor, ignitor, and sensor wires at  
the Integrated Gas Unit Controller (IGC).  
6. Reinstall burner rack as described above.  
Replacement Parts A complete list of replace-  
ment parts may be obtained from any Carrier distributor  
upon request. Refer to Fig. 55 for a typical unit wiring  
schematic.  
8. Remove the 2 screws that attach the burner rack to the  
vestibule plate.  
37  
LOW HEAT  
48HJE004, 48HJD005-007 72,000 BTUH INPUT  
MEDIUM AND HIGH HEAT  
48HJE005-007, 48HJF004 115,000 BTUH INPUT  
48HJF005-007 150,000 BTUH INPUT  
Fig. 54 Spark Gap Adjustment  
38  
TROUBLESHOOTING  
Refer to Tables 30-36 for troubleshooting details.  
Table 30 LED Error Code Service Analysis  
SYMPTOM  
CAUSE  
REMEDY  
Hardware failure.  
(LED OFF)  
Loss of power to control module (IGC).  
Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and  
transformer. Units without a 24-v circuit breaker have an internal  
overload in the 24-v transformer. If the overload trips, allow  
10 minutes for automatic reset.  
Fan ON/OFF delay modified High limit switch opens during heat  
Ensure unit is fired on rate and temperature rise is correct.  
(LED/FLASH)  
exchanger warm-up period before fan-on  
delay expires.  
Limit switch opens within three minutes  
after blower-off delay timing in Heating mode.  
Ensure unitsexternal static pressure is within application guidelines.  
Limit switch fault.  
(LED 2 flashes)  
High temperature limit switch is open.  
Check the operation of the indoor (evaporator) fan motor.  
Ensure that the supply-air temperature rise is in accordance with  
the range on the unit nameplate.  
Flame sense fault.  
(LED 3 flashes)  
The IGC sensed flame that should not be  
present.  
Reset unit. If problem persists, replace control board.  
4 consecutive limit  
switch faults.  
(LED 4 flashes)  
Inadequate airflow to unit.  
Check operation of indoor (evaporator) fan motor and that supply-air  
temperature rise agrees with range on unit nameplate information.  
Ignition lockout.  
(LED 5 flashes)  
Unit unsuccessfully attempted ignition for  
15 minutes.  
Check ignitor and flame sensor electrode spacing, gaps, etc.  
Ensure that flame sense and ignition wires are properly  
terminated. Verify that unit is obtaining proper amount of gas.  
Induced-draft motor fault.  
(LED 6 flashes)  
IGC does not sense that induced-draft  
motor is operating.  
Check for proper voltage. If motor is operating, check the  
speed sensor plug/IGC Terminal J2 connection. Proper  
connection: PIN 1White, PIN 2 Red, PIN 3 Black.  
Rollout switch fault.  
(LED 7 flashes)  
Rollout switch has opened.  
Rollout switch will automatically reset, but IGC will continue to  
lock out unit. Check gas valve operation. Ensure that induced-  
draft blower wheel is properly secured to motor shaft.  
Reset unit at unit disconnect.  
Internal control fault.  
(LED 8 flashes)  
Microprocessor has sensed an error in the  
software or hardware.  
If error code is not cleared by resetting unit power, replace the IGC.  
IMPORTANT: Refer to heating troubleshooting for additional  
heating section troubleshooting information.  
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  
39  
Table 31 Heating Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Burners will not  
ignite.  
Misaligned spark electrodes.  
Check flame ignition and sensor electrode positioning. Adjust as  
needed.  
No gas at main burners.  
Check gas line for air purge as necessary. After purging gas line of  
air, allow gas to dissipate for at least 5 minutes before attempting to  
relight unit.  
Check gas valve.  
Water in gas line.  
No power to furnace.  
Drain water and install drip leg to trap water.  
Check power supply, fuses, wiring, and circuit breaker.  
No 24 v power supply to control circuit.  
Check transformer. Transformers with internal overcurrent protection  
require a cool-down period before resetting. Check 24-v circuit  
breaker; reset if necessary.  
Miswired or loose connections.  
Burned-out heat anticipator in thermostat.  
Broken thermostat wires.  
Dirty air filter.  
Check all wiring and wirenut connections.  
Replace thermostat.  
Run continuity check. Replace wires, if necessary.  
Clean or replace filter as necessary.  
Inadequate heating.  
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, Adjust pulley.  
Limit switch cycles main burners.  
Too much outdoor air.  
Check rotation of blower, thermostat heat anticipator settings, and  
temperature rise of unit. Adjust as needed.  
Adjust minimum position.  
Check economizer operation.  
Poor flame  
characteristics.  
Incomplete combustion (lack of  
combustion air) results in:  
Check all screws around flue outlets and burner compartment.  
Tighten as necessary.  
Aldehyde odors, CO (carbon monoxide),  
sooting flame, or floating flame.  
Cracked heat exchanger.  
Overfired unit reduce input, change orifices, or adjust gas line or  
manifold pressure.  
Check vent for restriction. Clean as necessary.  
Check orifice to burner alignment.  
Burners will not  
turn off.  
Unit is locked into Heating mode for a  
one minute minimum.  
Wait until mandatory one minute time period has elapsed or reset  
power to unit.  
Table 32 Durablade Economizer Service Analysis  
PROBLEM  
Damper does not  
open.  
CAUSE  
Evaporator fan not on.  
REMEDY  
Check wiring between G on connection board and evaporator-fan  
contactor.  
No power to economizer motor.  
1. Check that SW3 is making proper contact with the damper blade.  
2. Check continually across R1 coil. If not connect, replace relay R1.  
3. Check diode D18. If diode is not functioning properly, replace D18.  
4. Check wiring in economizer relay pack. (See unit label diagram.)  
Economizer motor failure.  
OAT or EC set too high.  
If there is 24 vac power at the motor terminals, but motor is not operat-  
ing, replace motor.  
1. Set at correct temperature (3 F below indoor space temperature).  
2. Check OAT or EC by setting set point above outdoor temperature or  
humidity level. If switch does not close, replace OAT or EC.  
Economizer  
operation limited to  
minimum position.  
Check wiring of economizer relay packs.  
1. Check continuity across relay R2 coil. If not connected, replace R2  
relay.  
2. Check continuity across relay R3 coil. If not connected, replace R3  
relay.  
Check SAT.  
If supply-air temperature is over 57 F, switch T2 should be closed. If  
not, replace SAT.  
Damper does not  
close.  
Incorrect wiring or wiring defects.  
1. Check switches 2 and 4. If non-operational, replace.  
2. Check diode D19. If diode D19 is not functioning properly, replace.  
3. Check wiring on economizer and on economizer relay pack. (See  
unit label diagram.)  
Check SAT.  
If supply-air thermostat is below 52 F, switch T1 should be closed. If  
not, replace SAT.  
Economizer motor failure.  
If there is 24 vac power at motor terminals, but motor is not operating,  
replace the motor.  
LEGEND  
EC Enthalpy Control  
OAT Outdoor-Air Thermostat  
SAT Supply-Air Thermostat  
SW Switch  
40  
Table 33 EconoMi$er Flash Code Identification  
FLASH CODE  
Constant On  
Constant Off  
CAUSE  
Normal operation  
No power  
ACTION TAKEN BY ECONOMI$ER  
Normal operation.  
No operation.  
Continuous  
Flash  
CONFIG button pushed and held  
between 3 and 9 seconds  
Outdoor air damper is stroked fully open, then closed  
(automatic test procedure takes 3 minutes to complete).  
Flash One  
Flash Two  
Flash Three  
Control board fault  
Thermostat fault (i.e., Y2 without Y1)  
Actuator fault  
System shutdown.  
System shutdown until corrected.  
Revert to mechanical cooling only.  
Continue operation with damper at minimum position.  
Revert to mechanical cooling only.  
Flash Four  
Supply air temperature sensor fault  
Continue operation with damper at minimum position.  
Disable mechanical cooling lockout.  
Continue operation with dry bulb or dry bulb differential switchover.  
Flash Five  
Flash Six  
Outdoor air temperature sensor fault  
Outdoor air humidity sensor fault  
Continue operation with single enthalpy EconoMi$er  
switchover or dry bulb EconoMi$er switchover (without  
humidity sensor).  
Flash Seven  
Return air temperature sensor fault  
Continue operation with single enthalpy, differential dry  
bulb, or dry bulb EconoMi$er switchover.  
Flash Eight  
Return air humidity sensor fault  
Flash Nine  
Flash Ten  
Carbon Dioxide (CO2) sensor fault  
Continue operation without ventilation control.  
Onboard adjustment potentiometer fault  
Continue operation with default potentiometer settings.  
Table 34 EconoMi$er Troubleshooting  
PROBLEM  
POTENTIAL CAUSE  
REMEDY  
Damper Does Not  
Open  
Indoor (Evaporator) Fan is  
Off  
Check to ensure that 24 vac is present at Terminal C1 (Common Power)  
on the IFC (Indoor Evaporator Fan Contactor) or that 24 vac is present at  
the IFO (Indoor Evaporator Fan On) terminal. Check whether 24 vac is  
present at PL 6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is  
not present, check wiring (see unit label diagram).  
Check proper thermostat connection to G on the connection board.  
No Power to EconoMi$er  
Controller  
Check to ensure that 24 vac is present across Terminals 24 VAC and  
24 V 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  
If STATUS light is flashing two flashes, the EconoMi$er controller senses  
the thermostat is wired incorrectly. Check wiring between the thermostat  
and the connection board in the electrical panel. The fault condition is  
caused by Y2 being energized before Y1.  
Actuator Fault  
Check the wiring between the EconoMi$er controller and the actuator.  
Hold CONFIG button between 3 and 10 seconds to verify the  
actuators operation. (This process takes 3 minutes to complete.)  
EconoMi$er  
Operation Limited to  
Minimum Position  
Minimum Position Set  
Incorrectly  
EconoMi$er Changeover  
Set Point Set Too High or  
Too Low  
Verify that the MIN POS (%) is set greater than zero. Adjust MIN POS (%)  
to 100% to verify operation, and then set to correct setting.  
Set at correct value. See Table 3.  
Supply Air Temperature  
Sensor Faulty  
If STATUS light is flashing 4 flashes, Supply Air Temperature Sensor is  
faulty. Check wiring or replace sensor.  
Outdoor Air Temperature  
Sensor Faulty  
If STATUS light is flashing 5 flashes, Outdoor Air Temperature Sensor is  
faulty. Check wiring or replace sensor.  
Damper Position  
Less than Minimum  
Position Set Point  
Supply Air Low Limit  
Strategy Controlling  
The supply-air temperature is less than 45 F, causing the minimum  
position to be decreased. Refer to the Start-Up instructions. Verify correct  
setting of MIN POS (%). If correct, EconoMi$er is operating correctly.  
Damper Does Not  
Return to Minimum  
Position  
CO2 Ventilation Strategy  
Controlling  
If a CO2 sensor is being used, and the damper position is greater than  
minimum position, the ventilation control strategy is controlling. Refer to  
the Start-Up instructions. EconoMi$er is operating correctly.  
Damper Does Not  
Close on Power Loss  
Damper Travel is  
Restricted  
Check to ensure the damper is not blocked.  
LEGEND  
IFM  
PL  
Indoor Fan Motor  
Plug  
41  
Table 35 MoistureMiser Dehumidification Subcooler Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Subcooler will not energize.  
No power to control transformer from  
evaporator-fan motor.  
Check power source and evaporator-fan relay. Ensure  
all wire connections are tight.  
No power from control transformer to liquid line 1. Fuse open; check fuse. Ensure continuity of wiring.  
solenoid valve  
2. Low-pressure switch open. Cycle unit off and allow  
low-pressure switch to reset. Replace switch if it will  
not close.  
3. Transformer bad; check transformer.  
Liquid line solenoid valve will not operate.  
Liquid line solenoid valve will not open.  
Low refrigerant charge or frosted evaporator  
coil.  
1. Solenoid coil defective; replace.  
2. Solenoid valve stuck open; replace.  
Subcooler will not deenergize.  
Low system capacity.  
Valve is stuck closed; replace valve.  
1. Check charge amount. Charge per Fig. 47-51.  
2. Evaporator coil frosted; check and replace low-  
pressure switch if necessary.  
Loss of compressor superheat  
conditions with subcooler  
energized.  
Thermostatic expansion valve (TXV).  
1. Check TXV bulb mounting, and secure tightly to  
suction line.  
2. Replace TXV if stuck open or closed.  
42  
Table 36 Cooling Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Compressor and condenser fan  
will not start.  
Power failure.  
Fuse blown or circuit breaker tripped.  
Defective thermostat, contactor, transformer,  
or control relay.  
Call power company.  
Replace fuse or reset circuit breaker.  
Replace component.  
Insufficient line voltage.  
Incorrect or faulty wiring.  
Thermostat setting too high.  
Faulty wiring or loose connections in com-  
pressor circuit.  
Determine cause and correct.  
Check wiring diagram and rewire correctly.  
Lower thermostat setting below room temperature.  
Check wiring and repair or replace.  
Compressor will not start  
but condenser fan runs.  
Compressor motor burned out, seized, or  
internal overload open.  
Defective run/start capacitor, overload, start  
relay.  
Determine cause. Replace compressor.  
Determine cause and replace.  
One leg of 3-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.  
Defective run/start capacitor, overload, or  
start relay.  
Replace and determine cause.  
Determine cause and correct.  
Determine cause and correct.  
Determine cause and replace.  
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.  
Condenser coil dirty or restricted.  
Dirty air filter.  
Clean coil or remove restriction.  
Replace filter.  
Excessive head pressure.  
Dirty condenser coil.  
Refrigerant overcharged.  
Air in system.  
Clean coil.  
Recover excess refrigerant.  
Recover refrigerant, evacuate system, and  
recharge.  
Condenser air restricted or air short-cycling.  
Low refrigerant charge.  
Compressor valves leaking.  
Restriction in liquid tube.  
High heat load.  
Compressor valves leaking.  
Refrigerant overcharged.  
Dirty air filter.  
Determine cause and correct.  
Check for leaks, repair, and recharge.  
Replace compressor.  
Remove restriction.  
Check for source and eliminate.  
Replace compressor.  
Head pressure too low.  
Excessive suction pressure.  
Suction pressure too low.  
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.  
Time off delay not finished.  
Reset thermostat.  
Install low-ambient kit.  
Wait for 30-second off delay.  
Evaporator fan will not shut off.  
43  
44  
LEGEND AND NOTES FOR FIG. 55  
PL  
QT  
R
Plug Assembly  
Quadruple Terminal  
Relay  
AHA Adjustable Heat Anticipator  
Contactor, Compressor  
C
CAP Capacitor  
RS  
Rollout Switch  
CC  
Cooling Compensator  
SAT Supply-Air Thermostat  
SEN Sensor  
SW1 Switch Fully Open  
CLO Compressor Lockout  
COMP Compressor Motor  
D
EC  
Diode  
Enthalpy Control  
SW2 Switch Fully Closed  
SW3 Switch Minimum Vent Position  
SW4 Switch Maximum Vent Position  
ECON Economizer  
EPS Emergency Power Supply  
EQUIP Equipment  
TC  
TH  
Thermostat-Cooling  
Thermostat-Heating  
ER  
FPT  
Economizer Relay  
Freeze-Protection Thermostat  
TRAN Transformer  
Field Splice  
FSS Filter-Status Switch  
FU  
Fuse  
GND Ground  
Marked Wire  
GVR Gas Valve Relay  
HPS High-Pressure Switch  
Terminal (Marked)  
HS  
HV  
I
Hall-Effect Sensor  
Terminal (Unmarked)  
Terminal Block  
High Voltage  
Ignitor  
IDM  
IFC  
IFM  
IGC  
Induced-Draft Motor  
Indoor (Evaporator) Fan Contactor  
Indoor (Evaporator) Fan Motor  
Integrated Gas Unit Controller  
Splice  
Splice (Marked)  
Factory Wiring  
LED Light-Emitting Diode  
LPS Low-Pressure/Loss-of-Charge Switch  
Field Control Wiring  
Field Power Wiring  
Accessory or Optional Wiring  
To indicate common potential only.  
Not to represent wiring.  
LS  
Limit Switch  
MGV Main Gas Valve  
MTR Motor  
OAT Outdoor-Air Thermostat  
OFM Outdoor (Condenser) Fan Motor  
P
Plug  
NOTES FOR FIG. 55  
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. Thermostats: HH07AT170, 172  
Subbase: HH93AZ176, 177, 178 and 179  
4. Set heat anticipator at .14 amp for first stage and .14 amp for second stage.  
5. Use copper conductors only.  
6. TRAN is wired for 230 v unit. If unit is to be run with 208 v power supply, disconnect BLK wire from  
230 v tap and connect to 208 v tap (RED). Insulate end of 230 v tap.  
45  
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. 534-767 Printed in U.S.A. Form 48HJ-18SI Pg 46 9-00 Replaces: 48HJ-17SI  
Book 1  
4
Tab 1a 6a  
START-UP CHECKLIST  
(Remove and Store 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  
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS  
CHECK GAS PIPING FOR LEAKS  
CHECK THAT RETURN 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  
III. START-UP  
ELECTRICAL  
SUPPLY VOLTAGE  
COMPRESSOR AMPS  
INDOOR-FAN AMPS  
L1-L2  
L1  
L1  
L2-L3  
L2  
L2  
L3-L1  
L3  
L3  
TEMPERATURES  
OUTDOOR-AIR TEMPERATURE  
RETURN-AIR TEMPERATURE  
COOLING SUPPLY AIR  
DB  
DB  
WB  
GAS HEAT SUPPLY AIR  
PRESSURES  
GAS INLET PRESSURE  
IN. WG  
GAS MANIFOLD PRESSURE  
REFRIGERANT SUCTION  
REFRIGERANT DISCHARGE  
IN. WG (HI FIRE)  
PSIG  
PSIG  
°F  
°F  
VERIFY REFRIGERANT CHARGE USING CHARGING TABLES  
VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION  
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. 534-767  
Printed in U.S.A.  
Form 48HJ-18SI  
Pg CL-1  
9-00  
Replaces: 48HJ-17SI  
Tab  
1a 6a  

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