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″
1/2″ NPT
3/4″ NPT
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
13/8″ Dia [35] Field Power Supply Hole
2″ Dia [51] Power Supply Knockout
13/4″ Dia [44] Charging Port Hole
7/8″ Dia [22] Field Control Wiring Hole
3/4″-14 NPT Condensate Drain
*Select either 3/4″ or 11/4″ for power, depending on wire size.
†Select either 1/2″ or 3/4″ for gas depending on gas connection.
NOTES:
1. Dimensions in [ ] are in millimeters.
5/8″-14 NPT Gas Connection
2. Center of gravity.
G
21/2″ Dia [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
— Underwriters’ Laboratories
= 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
— Underwriters’ Laboratories
= 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 units’ external static pressure is within application guidelines.
Limit switch fault.
(LED 2 flashes)
High temperature limit switch is open.
Check the operation of the indoor (evaporator) fan motor.
Ensure that the supply-air temperature rise is in accordance with
the range on the unit nameplate.
Flame sense fault.
(LED 3 flashes)
The IGC sensed flame that should not be
present.
Reset unit. If problem persists, replace control board.
4 consecutive limit
switch faults.
(LED 4 flashes)
Inadequate airflow to unit.
Check operation of indoor (evaporator) fan motor and that supply-air
temperature rise agrees with range on unit nameplate information.
Ignition lockout.
(LED 5 flashes)
Unit unsuccessfully attempted ignition for
15 minutes.
Check ignitor and flame sensor electrode spacing, gaps, etc.
Ensure that flame sense and ignition wires are properly
terminated. Verify that unit is obtaining proper amount of gas.
Induced-draft motor fault.
(LED 6 flashes)
IGC does not sense that induced-draft
motor is operating.
Check for proper voltage. If motor is operating, check the
speed sensor plug/IGC Terminal J2 connection. Proper
connection: PIN 1— White, PIN 2 — Red, PIN 3 — Black.
Rollout switch fault.
(LED 7 flashes)
Rollout switch has opened.
Rollout switch will automatically reset, but IGC will continue to
lock out unit. Check gas valve operation. Ensure that induced-
draft blower wheel is properly secured to motor shaft.
Reset unit at unit disconnect.
Internal control fault.
(LED 8 flashes)
Microprocessor has sensed an error in the
software or hardware.
If error code is not cleared by resetting unit power, replace the IGC.
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
actuator’s 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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