GEMINI™ SELECT
38APS025-050,38APD025-100 Air-Cooled Condensing Units
with PURON® Refrigerant (R-410A)
50/60 Hz
Installation Instructions
CONTENTS
CAUTION
Page
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1
Puron refrigerant (R-410A) systems operate at higher pres-
sures than standard R-22 systems. Do not use R-22 service
equipment or components on Puron refrigerant equipment.
If service equipment is not rated for Puron refrigerant,
equipment damage or personal injury may result.
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Step 1 — Inspect Shipment . . . . . . . . . . . . . . . . . . . . . . 1
Step 2 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 1
• DOMESTIC UNITS
• EXPORT UNITS
• PLACING UNITS
Step 3 — Make Refrigerant Piping
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• SIZE REFRIGERANT LINES
• LIQUID LINE SOLENOID VALVE
• THERMOSTATIC EXPANSION VALVES
• LIQUID LINE FILTER DRIER
INSTALLATION
Step 1 — Inspect Shipment — Inspect unit for dam-
age upon arrival. If damage is found, immediately file a claim
with the shipping company. Verify proper unit delivery by
checking unit nameplate data and the model number nomen-
clature shown in Fig. 1. See Tables 1-4 for unit physical data.
• LONG LINE APPLICATIONS
• HOT GAS BYPASS
Step 2 — Rig and Place Unit — All units are de-
signed for overhead rigging, and it is important that this meth-
od be used. Lifting holes are provided in the frame base rails. It
is recommended to use shackles in the lifting holes (see rigging
label on the unit and Table 5, and Fig. 2 and 3 for rigging
weights and center of gravity). All panels must be in place
when rigging.
• FINAL CONNECTION AND LEAK TEST
• EVACUATION AND DEHYDRATION
Step 4 — Make Electrical Connections . . . . . . . . . . 26
• POWER SUPPLY
• POWER WIRING
• CONTROL POWER
• FIELD CONTROL WIRING
IMPORTANT: To maintain unit stability while lifting,
use 4 cables, chains or straps of equal length. Attach one
end of each cable to shackle attachment point and the
other end of each cable to the overhead rigging point.
Step 5 — Install Accessories . . . . . . . . . . . . . . . . . . . . 34
• LOW-AMBIENT OPERATION
• MISCELLANEOUS ACCESSORIES
SAFETY CONSIDERATIONS
Use spreader bars or frame to keep the cables, chains, and
straps clear of the unit sides. Leave standard coil protection
packaging in place during rigging to provide protection to
coils. Remove and discard all coil protection after rigging ca-
bles are detached.
Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
CAUTION
Untrained personnel can perform basic maintenance func-
tions, such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in the
literature, and on tags, stickers, and labels attached to the
equipment and any other safety precautions that may apply.
All panels must be in place when rigging. Failure to com-
ply could result in equipment damage.
CAUTION
•
•
•
Follow all safety codes.
For unit sizes 025 to 060 when handling with a forklift,
handle only through fork pocket holes. Failure to follow
this caution could result in equipment damage or personal
injury.
Wear safety glasses and work gloves.
Use care in handling, rigging, and setting bulky
equipment.
WARNING
CAUTION
Open all remote disconnects before servicing this equip-
ment. Failure to do so could result in personal injury from
electric shock.
For unit sizes 070 to 100, do not forklift the unit unless unit
is attached to a skid designed for forklifting. Failure to fol-
low this caution could result in equipment damage or per-
sonal injury.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53380002-01 Printed in U.S.A. Form 38AP-1SI Pg 1 8-09 Replaces: New
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Table 1 — 38AP025-050 Unit Physical Data — English
38AP UNIT SIZE
NOMINAL CAPACITY, 50/60Hz (tons)
CIRCUIT
025
21/25
027
23/27
030
25/30
040
33/40
050
42/50
Dual
Single
Dual
Single
Dual
Single
Dual
Single
Dual
Single
OPERATING WEIGHTS (lb)
Standard
With Low Sound Option
1095
1131
1077
1113
1258
1294
1240
1276
1264
1300
1246
1282
2094
2148
1968
2022
2120
2174
1977
2031
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (lb)*
28
24
30
26
30
26
52
40
52
40
NITROGEN SHIPPING CHARGE
15 psig
COMPRESSOR
hp (Qty) (CKT A/CKT B)
11 (2)
11 (2)
13 (2)
13 (2)
15 (2)
15 (2)
10 (2)/
8.5 (2)
13 (3)
11 (2)/
13 (2)
15 (3)
CAPACITY STEPS
Standard
Digital Option
2
22
2
22
2
22
2
22
2
22
2
22
4
44
3
33
4
44
3
33
CRANKCASE HEATER (W) (each compressor)
90
CONDENSER FANS
Standard
Propeller Type - Direct Drive
Quantity
2
2
2
2
2
2
3
3
3
3
RPM
1140 (60 Hz), 950 (50 Hz)
30
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
Low Noise
3300
2750
3300
2750
3300
2750
3300
2750
3300
2750
3300
2750
4200
3500
4200
3500
4200
3500
4200
3500
Shrouded Axial Fan - Direct Drive
Quantity
2
2
2
2
2
2
3
3
3
3
RPM
850 (60 Hz), 700 (50 Hz)
30
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
2750
2300
2750
2300
2750
2300
2750
2300
2750
2300
2750
2300
3500
2900
3500
2900
3500
2900
3500
2900
CONDENSER COIL
No. Coils per Circuit
sq ft
MCHX Type
1
1
27.1
27.1
33.9
33.9
33.9
33.9
67.8
67.8
67.8
67.8
TEMPERATURE RELIEF
Fusible Plug on Liquid Lines of Each Circuit - 210 F
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
13/8 / 13/8
15/8
13/8 / 13/8
15/8
13/8 / 13/8
15/8
15/8 / 15/8
21/8
15/8 / 15/8
5/8 / 5/8
21/8
5/8 / 5
75
/
8
/
5/8 / 5
75
/
8
/
/
5
5
5
5
7
7
7
Liquid Line
/
8 / 5/8
75
/
/
8 / 5/8
75
/
8
8
8
8
8
MAXIMUM HEIGHT FOR 3° F SUBCOOLING
(ft)†
75
75
75
75
75
75
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
50/50
50
100
50
50/50
50
100
50
50/50
50
100
50
54/46
23
100
33
48/52
23
100
33
LEGEND
MCHX
ODF
—
—
Microchannel Heat Exchanger
Outside Diameter, Female
*Typical operating charge with 25 ft of interconnecting piping. Operating
charge is approximate for maximum system capacity. Unit is factory supplied
with nitrogen holding charge. Refrigerant charge for dual circuit units is the
total for both circuits.
†Maximum vertical separation between evaporator coil and condensing unit if
condensing unit is below the evaporator.
3
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Table 2 — 38AP060-100 Unit Physical Data — English
38AP UNIT SIZE
NOMINAL CAPACITY, 50/60Hz (tons)
CIRCUIT
060
50/60
Dual
070
58/70
Dual
080
67/80
Dual
090
75/90
Dual
100
83/100
Dual
OPERATING WEIGHTS (lb)
Standard
With Low Sound Option
2227
2299
2450
2522
2610
2700
2835
2943
2844
2952
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (lb)*
60
70
78
96
100
NITROGEN SHIPPING CHARGE
15 psig
COMPRESSOR
hp (Qty) (CKT A/CKT B)
13 (2)/15 (2)
15 (2)/11 (3)
15 (2)/15 (3)
13 (3)/15 (3)
15 (3)/15 (3)
CAPACITY STEPS
Standard
Digital Option
4
44
5
55
5
55
6
66
6
66
CRANKCASE HEATER (W) (each compressor)
90
CONDENSER FANS
Standard
Propeller Type - Direct Drive
Quantity
4
4
5
6
6
RPM
1140 (60 Hz), 950 (50 Hz)
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
30
7500
6250
6200
5150
6000
5000
9000
7500
9000
7500
Low Noise
Quantity
Shrouded Axial Fan - Direct Drive
5
4
4
6
6
RPM
850 (60 Hz), 700 (50 Hz)
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
30
5200
4300
5000
4150
6250
5200
7500
6250
7500
6250
CONDENSER COIL
No. Coils per Circuit
sq ft
MCHX Type
2 to 3
124.5
1
67.8
2
99.6
3
3
149.4
149.4
TEMPERATURE RELIEF
Fusible Plug on Liquid Lines of Each Circuit - 210 F
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
15/8 / 15/8
5/8 / 7/8
15/8 / 21/8
15/8 / 21/8
7/8 / 7/8
21/8 / 21/8
7/8 / 7/8
21/8 / 25/8
7/8 / 7/8
Liquid Line
7/8 / 7
75
/
8
MAXIMUM HEIGHT FOR 3° F SUBCOOLING
(ft)†
75
75
75
75
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
46/54
23
47/53
24
40/60
20
46/54
15
50/50
17
LEGEND
MCHX
ODF
—
—
Microchannel Heat Exchanger
Outside Diameter, Female
*Typical operating charge with 25 ft of interconnecting piping. Operating
charge is approximate for maximum system capacity. Unit is factory supplied
with nitrogen holding charge. Refrigerant charge for dual circuit units is the
total for both circuits.
†Maximum vertical separation between evaporator coil and condensing unit if
condensing unit is below the evaporator.
4
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Table 3 — 38AP025-050 Unit Physical Data — SI
38AP UNIT SIZES
NOMINAL CAPACITY 50/60 Hz (kW)
CIRCUIT
025
74/88
027
81/95
030
88/106
040
116/141
050
148/176
Dual
Single
Dual
Single
Dual
Single
Dual
Single
Dual
Single
OPERATING WEIGHTS (kg)
Standard
With Low Sound Option
497
513
489
505
571
587
562
579
573
590
565
582
950
974
893
917
961
986
897
921
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (kg)*
12.7
10.9
13.6
11.8
13.6
11.8
23.6
18.1
23.6
18.1
NITROGEN SHIPPING CHARGE
1.03 bar
COMPRESSOR
kW (Qty) (CKT A/CKT B)
8.2 (2)
8.2 (2)
9.7 (2)
9.7 (2)
11.2 (2)
11.2 (2)
7.5 (2)/
6.3 (2)
9.7 (3)
8.2 (2)/
9.7 (2)
11.2 (3)
CAPACITY STEPS
Standard
Digital Option
2
22
2
22
2
22
2
22
2
22
2
22
4
44
3
33
4
44
3
33
CRANKCASE HEATER (W) (each compressor)
90
CONDENSER FANS
Standard
Propeller Type - Direct Drive
Quantity
2
2
2
2
2
2
3
3
3
3
r/s
19 (60 Hz), 16 (50 Hz)
762
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
3300
2750
3300
2750
3300
2750
3300
2750
3300
2750
3300
2750
4200
3500
4200
3500
4200
3500
4200
3500
Low Noise
Quantity
Shrouded Axial Fan - Direct Drive
2
2
2
2
2
2
3
3
3
3
r/s
14 (60 Hz), 12 (50 Hz)
762
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
2750
2300
2750
2300
2750
2300
2750
2300
2750
2300
2750
2300
3500
2900
3500
2900
3500
2900
3500
2900
CONDENSER COIL
No. Coils per Circuit
sq m
MCHX Type
1
1
2.5
2.5
3.2
3.2
3.2
3.2
6.3
6.3
6.3
6.3
TEMPERATURE RELIEF
Fusible Plug on Liquid Lines of Each Circuit - 99 C
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
13/8 / 13/8
5/8 / 5/8
15/8
8
13/8 / 13/8
15/8
8
13/8 / 13/8
5/8 / 5/8
15/8
8
15/8 / 15/8
21/8
8
15/8 / 15/8
21/8
8
5
5
7
7
7
Liquid Line
/
5/8 / 5
23
/
/
/
5/8 / 5
23
/
/
5/8 / 5
23
/
/
8
8
8
MAXIMUM HEIGHT FOR 1.7° C
SUBCOOLING (m)†
23
23
23
23
23
23
23
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
50/50
50
100
50
50/50
50
100
50
50/50
50
100
50
54/46
23
100
33
48/52
23
100
33
LEGEND
MCHX
ODF
—
—
Microchannel Heat Exchanger
Outside Diameter, Female
*Typical operating charge with 7.62 m of interconnecting piping. Operating
charge is approximate for maximum system capacity. Unit is factory supplied
with nitrogen holding charge. Refrigerant charge for dual circuit units is the
total for both circuits.
†Maximum vertical separation between evaporator coil and condensing unit if
condensing unit is below the evaporator.
5
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Table 4 — 38AP060-100 Unit Physical Data — SI
38AP UNIT SIZES
NOMINAL CAPACITY 50/60 Hz (kW)
CIRCUIT
060
176/211
Dual
070
204/246
Dual
080
236/281
Dual
090
264/317
Dual
100
292/352
Dual
OPERATING WEIGHTS (kg)
Standard
With Low Sound Option
1010
1043
1111
1144
1184
1225
1286
1335
1290
1339
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (kg)*
27.2
31.8
35.4
43.5
45.4
NITROGEN SHIPPING CHARGE
1.03 bar
COMPRESSOR
kW (Qty) (CKT A/CKT B)
9.7 (2)/11.2 (2)
11.2 (2)/8.2 (3)
11.2 (2)/11.2 (3)
9.7 (3)/11.2 (3)
11.2 (3)/11.2 (3)
CAPACITY STEPS
Standard
Digital Option
4
44
5
55
5
55
6
66
6
66
CRANKCASE HEATER (W) (each compressor)
90
CONDENSER FANS
Standard
Propeller Type - Direct Drive
Quantity
4
4
5
6
6
r/s
19 (60 Hz), 16 (50 Hz)
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
762
7500
6250
6200
5150
6000
5000
9000
7500
9000
7500
Low Noise
Quantity
Shrouded Axial Fan - Direct Drive
5
4
4
6
6
r/s
14 (60 Hz), 12 (50 Hz)
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
762
6250
5200
5200
4300
5000
4150
7500
6250
7500
6250
CONDENSER COIL
No. Coils per Circuit
sq m
MCHX Type
2 - 3
1
6.3
2
9.3
3 - 3
13.9
3 - 3
13.9
11.6
TEMPERATURE RELIEF
Fusible Plug on Liquid Lines of Each Circuit - 99 C
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
15/8 / 15/8
5/8 / 7/8
15/8 / 21/8
15/8 / 21/8
7/8 / 7/8
21/8 / 21/8
21/8 / 25/8
7/8 / 7/8
23
7/8 / 7
23
/
/
8 / 7/8
23
7
Liquid Line
8
MAXIMUM HEIGHT FOR 1.7° C
SUBCOOLING (m)†
23
23
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
46/54
23
47/53
24
40/60
20
46/54
15
50/50
17
LEGEND
MCHX
ODF
—
—
Microchannel Heat Exchanger
Outside Diameter, Female
*Typical operating charge with 7.62 m of interconnecting piping. Operating
charge is approximate for maximum system capacity. Unit is factory supplied
with nitrogen holding charge. Refrigerant charge for dual circuit units is the
total for both circuits.
†Maximum vertical separation between evaporator coil and condensing unit if
condensing unit is below the evaporator.
6
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Table 5 — Operational Corner Weights with Refrigerant Charge (Approximate)
38APS Unit (lb)
38APS Unit (kg)
38APS
UNIT
SIZE
OPERATIONAL CORNER WEIGHT
38APS
UNIT
SIZE
OPERATIONAL CORNER WEIGHT
TOTAL
WEIGHT
TOTAL
WEIGHT
A
B
C
D
A
B
C
D
025
027
030
040
050
1089
1255
1261
1998
2007
356
396
399
619
623
253
291
293
616
620
200
240
241
380
381
281
327
328
382
383
025
027
030
040
050
494
569
572
906
910
161
180
181
281
282
115
132
133
280
281
91
109
109
173
173
127
148
149
173
174
38APD Unit (lb)
38APD Unit (kg)
38APD
UNIT
SIZE
OPERATIONAL CORNER WEIGHT
38APD
UNIT
SIZE
OPERATIONAL CORNER WEIGHT
TOTAL
WEIGHT
TOTAL
WEIGHT
A
B
C
D
A
B
C
D
025
027
030
040
050
060
070
080
090
100
1107
1273
1279
2124
2150
2257
2494
2665
2901
2910
360
401
404
672
683
706
723
791
759
759
258
296
297
671
684
705
620
679
750
750
204
245
245
390
392
422
532
552
692
696
285
331
333
390
391
423
620
643
700
705
025
027
030
040
050
060
070
080
090
100
502
577
580
963
975
1024
1131
1209
1316
1320
163
182
183
305
310
320
328
359
344
344
117
134
135
305
310
320
281
308
340
340
93
111
111
177
178
192
241
250
314
316
129
150
151
177
178
192
281
292
318
320
B
C
B
C
B
C
a38-7114
A
D
A
D
A
D
TOP VIEW,
SIZES 025 TO 030
TOP VIEW, SIZES 040 TO 060
TOP VIEW, SIZES 070 TO 100
Fig. 2 — Corner Weights
7
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a38-7115
a38-7116
SIZES 025 TO 060
SIZES 070 TO 100
Fig. 3 — Rigging Labels
a38-7130
LEGEND
4 x 24 in.
ASTM “C”
CHANNEL
ASTM — American Society for
Testing and Materials
Fig. 4 — Perimeter Support Channel
8
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a38-7101
9
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a38-7102
10
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a38-7103
11
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a38-7104
12
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OUTDOOR FAN LAYOUT (Single and Dual Circuit)
OFM1
OFM1
OFM1
OFM2
OFM3
OFM3
OFM2
OFM2
OFM4
TOP VIEW
SIZES 025-030
TOP VIEW
SIZES 040-050
TOP VIEW
SIZES 060-070
OFM1
OFM2
OFM3
OFM5
OFM6
OFM1
OFM2
OFM5
OFM3
OFM6
OFM4
TOP VIEW
SIZE 080
TOP VIEW
SIZES 090-100
COMPRESSOR LAYOUT DUAL CIRCUIT
A1
B1
B2
B3
A2
B1
A2
A1
B1
A1
B2
TOP VIEW
SIZES 070-080
TOP VIEW
SIZES 040-060
TOP VIEW
SIZES 025-030
A3
A2
A1
B1
B2
B3
a38-7131
TOP VIEW
SIZES 090-100
LEGEND
A
B
— Circuit 1 Compressor
— Circuit 2 Compressor
OFM — Outdoor Fan
COMPRESSOR LAYOUT SINGLE CIRCUIT
A1
A2
A1
A2
A3
TOP VIEW
SIZES 040-050
TOP VIEW
SIZES 025-030
Fig. 9 — Outdoor Fan and Compressor Layout
13
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40RU
a38-7098_gs
LEGEND
NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System
Design Manual for details.
LLSV — Liquid Line Solenoid Valve
NEC — National Electrical Code
TXV — Thermostatic Expansion Valve
Piping
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not
intended for, or to include all details for, a specific installation.
4. Install field-supplied disconnect switch in accordance with all local and national electrical
codes.
Double Riser Piping (if required)
*Field supplied.
5. Liquid line solenoid valves (solenoid drop control) are not required but are recommended
to prevent refrigerant migration to the compressor.
†If double suction riser is required for piping
system, size short riser (3 ft maximum)
according to Fig. 12.
6. Factory-supplied accumulator not shown.
7. Dual-circuit piping shown. Single-circuit piping is similar but would only have one suction
line and one liquid line.
**Field supplied. See Table 6 for refrigerant spe-
cialties part numbers.
8. A field-supplied, 5% bleed port TXV is required for every application.
9. Sight glass, LLSV, and filter drier are field supplied.
10. Long line length check valves are required for liquid line installation on all linear line
length applications of more than 100 ft (30.5 m). For any 025-030 size dual-circuit unit
application where evaporator is located higher than the condensing unit, check valves
are required for linear line length above 55 ft (16.8 m).
Fig. 10 — 38AP Unit Rooftop Installation
14
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a38-7099_gs
NOTES:
LEGEND
1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System
Design Manual for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not
intended for, or to include all details for, a specific installation.
4. Install field-supplied disconnect switch in accordance with all local and national electri-
cal codes.
5. Liquid line solenoid valves (solenoid drop control) are not required but are recom-
mended to prevent refrigerant migration to the compressor.
6. Factory-supplied accumulator not shown.
7. Dual-circuit piping shown. Single-circuit piping is similar but would only have one suc-
tion line and one liquid line.
8. A field-supplied, 5% bleed port TXV is required for every application.
9. Sight glass, LLSV, and filter drier are field supplied.
LLSV — Liquid Line Solenoid Valve
NEC — National Electrical Code
TXV — Thermostatic Expansion Valve
Piping
*Field supplied.
†Field supplied. See Table 6 for refrigerant spe-
cialties part numbers.
10. Long line length check valves are required for liquid line installation on all linear line
length applications of more than 100 ft (30.5 m). For any 025-030 size dual-circuit unit
application where evaporator is located higher than the condensing unit, check valves
are required for linear line length above 55 ft (16.8 m).
Fig. 11 — 38AP Unit Ground Level Installation
15
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Table 6 — Refrigerant Specialties Part Numbers
CIRCUIT A
LLSV Coil
38APS UNIT SIZE
Tons
24.0
26.7
LL Size (in.)
LLSV
Sight Glass
Filter Drier
24-v, 50/60 Hz
5
/
EF680028
EF680029
EF680032
EF680032
KM680005
KM680006
KH680002
KH680003
8
025
027
7
/
8
5
/
EF680028
EF680029
EF680032
EF680032
KM680005
KM680006
KH680002
KH680003
8
7
/
8
5
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680002
KH680003
KH680004
8
7
030
31.1
/
8
11/8
5
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680003*
KH680003
KH680004
8
7
040
050
39.8
48.1
/
8
11/8
7
/
EF680029
EF680030
EF680032
EF680032
KM680006
KM680007
KH680003
KH680004
8
11/8
CIRCUIT A
LLSV Coil
24-v, 50/60 Hz
EF680032
EF680032
CIRCUIT B
LLSV Coil
24-v, 50/60 Hz
EF680032
EF680032
38APD
UNIT
SIZE
LL Size
(in.)
Sight
Glass
KM680004
KM680005
Filter
Drier
KH680001
KH680002
LL Size
Sight
Glass
Filter
Drier
Tons
12.0
13.3
LLSV
Tons
12.0
13.3
LLSV
(in.)
1
1
/
EF680031
EF680028
/
EF680031
EF680028
KM680004
KM680005
KH680001
KH680002
2
2
025
027
5
5
/
/
8
8
1
1
/
EF680031
EF680028
EF680032
EF680032
KM680004
KM680005
KH680001
KH680002
/
EF680031
EF680028
EF680032
EF680032
KM680004
KM680005
KH680001
KH680002
2
2
5
5
/
/
8
8
1
1
/
EF680031
EF680028
EF680029
EF680032
EF680032
EF680032
KM680004
KM680005
KM680006
KH680001
KH680002
KH680003
/
EF680031
EF680028
EF680029
EF680032
EF680032
EF680032
KM680004
KM680005
KM680006
KH680001
KH680002
KH680003
2
2
5
5
030
15.6
/
15.6
/
8
8
7
7
/
/
8
8
1
—
—
—
—
—
/
EF680028
EF680029
EF680029
EF680032
EF680032
EF680032
KM680004
KM680005
KM680006
KH680001
KH680002
KH680003
2
5
5
040
050
060
21.0
23.8
26.8
/
EF680028
EF680029
EF680032
EF680032
KM680005
KM680006
KH680002
KH680003
18.2
26.3
31.5
/
8
8
7
7
/
/
8
8
5
5
/
EF680028
EF680029
EF680032
EF680032
KM680005
KM680006
KH680002
KH680003
/
EF680028
EF680029
EF680032
EF680032
KM680005
KM680006
KH680002
KH680003
8
8
7
7
/
/
8
8
5
5
/
EF680028
EF680029
—
EF680032
EF680032
—
KM680005
KM680006
—
KH680002
KH680003
—
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680002
KH680003
KH680004
8
8
7
7
/
/
8
8
—
11/8
5
5
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680002
KH680003
KH680004
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680002
KH680003
KH680004
8
8
7
7
070
080
31.8
31.3
/
35.5
46.7
/
8
8
11/8
11/8
5
5
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680002
KH680003
KH680004
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680003*
KH680003
KH680004
8
8
7
7
/
/
8
8
11/8
11/8
5
/
EF680028
EF680029
EF680030
EF680032
EF680032
EF680032
KM680005
KM680006
KM680007
KH680003*
KH680003
KH680004
—
—
—
—
—
8
7
7
090
100
40.3
48.0
47.1
48.0
/
/
EF680029
EF680030
EF680032
EF680032
KM680006
KM680007
KH680003
KH680004
8
8
11/8
11/8
7
7
/
EF680029
EF680030
EF680032
EF680032
KM680006
KM680007
KH680003
KH680004
/
EF680029
EF680030
EF680032
EF680032
KM680006
KM680007
KH680003
KH680004
8
8
11/8
11/8
LEGEND
Liquid Line
LL
—
LLSV — Liquid Line Solenoid Valve
*Bushing required to fit 5/8 in. line.
NOTE:
1. Filter driers have been sized based upon 1 to 2 psig pressure drop clean
in accordance with ARI Standard 710.
2. All pipe sizes are OD inches. Equivalent sizes in millimeters follow:
in.
mm
12.7
15.9
22.2
28.6
1
/
2
5
/
8
7
/
8
11/8
16
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SIZE REFRIGERANT LINES — Consider the length of pip-
ing required between the condensing unit and indoor unit
(evaporator), the amount of liquid lift, and compressor oil re-
turn. Suction and liquid lines should be sized in accordance
with Table 7. Double suction risers may be required if con-
densing unit is located above the evaporator to assure proper
oil return at minimum load operating conditions. See Table 7
and Fig. 12. Note the indoor unit installtion instructions for ad-
ditional information.
Step 3 — Make Refrigerant Piping
Connections
CAUTION
Do NOT bury refrigerant piping underground. Failure to
comply could result in equipment damage.
The units have large suction lines to minimize friction loss-
es. The units also have the ability to operate at low capacity.
Because of these capabilities, use special care with suction pip-
ing and suction risers to ensure proper compressor oil return
under all operating conditions. If the evaporator is above the
condensing unit, the maximum allowable vertical separation
between the condensing unit and the evaporator is 75 ft
(22.9 m) for all units. Size suction lines in accordance with
Table 7 and Fig. 12.
CAUTION
The field-supplied liquid line solenoid valve must be
installed at the evaporator to avoid possible compressor
damage during unit operation if the maximum allowable
evaporator size is exceeded per Table 8. See Fig. 13 (for
38APD025-100 dual-circuit units), or Fig. 14 (for
38APS025-050 single-circuit units).
a38-7132
LEGEND
D PIPE DIAMETER
38AP
A
B
C
D
— Pipe A, Suction Riser, without Trap
— Pipe B, Suction Riser with Trap
— Suction Line to Condensing Unit
— Pipe D, Suction Riser Short Lift
Dual Circuit
UNIT
SIZE
Single Circuit
Circuit A
in. mm
Circuit B
in. mm
in.
mm
RED. — Reducer
STR — Street
025
027
030
040
050
060
070
080
090
100
11/8
11/8
11/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
29
29
29
35
35
35
41
41
41
41
11/8
11/8
11/8
11/8
13/8
15/8
15/8
15/8
15/8
15/8
29
29
29
29
35
41
41
41
41
41
13/8
13/8
13/8
15/8
15/8
—
35
35
35
41
41
—
—
—
—
—
NOTES:
1. Short riser, pipe D, is used when routing suction line to
condensing unit connection. See table at right.
2. See Table 7 for values of A, B, and C.
—
—
—
—
Fig. 12 — Double Suction Riser Construction
17
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Table 7 — Refrigerant Piping Requirements
38APS025-050 Single-Circuit Units (60 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
38APS
UNIT
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
75-100
100-125
125-150
150-175
175-200
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
(45.7-53.3)
(53.3-61.0)
SIZE
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
5
5
7
7
7
7
7
7
025
027
030
040
050
/
/
/
/
/
13/8
13/8
13/8
15/8
15/8
/
/
/
/
/
15/8
15/8
15/8
21/8
21/8
/
/
/
/
/
15/8
15/8
21/8
21/8
21/8
/
/
/
/
15/8
21/8
21/8
21/8
21/8
/
/
/
/
21/8
21/8
21/8
21/8
25/8
/
/
/
21/8
21/8
21/8
21/8
25/8
/
/
/
21/8
21/8
21/8
25/8
25/8
/
/
21/8
21/8
21/8
25/8
25/8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
5
5
5
7
5
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
38APD025-100 Dual-Circuit Units (60 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
(15.2-22.9)
75-100
(22.9-30.5)
100-125
(30.5-38.1)
125-150
(38.1-45.7)
150-175
(45.7-53.3)
175-200
(53.3-61.0)
38APD UNIT
SIZE
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
1
1
5
5
5
5
5
5
Ckt A
025
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
11/8
11/8
11/8
11/8
11/8
11/8
13/8
11/8
13/8
13/8
13/8
13/8
15/8
15/8
13/8
15/8
15/8
15/8
15/8
15/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
11/8
11/8
11/8
11/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
21/8
25/8
25/8
25/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
21/8
25/8
25/8
25/8
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
15/8
15/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
25/8
25/8
25/8
25/8
/
/
/
/
/
/
/
/
/
/
/
15/8
15/8
15/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
21/8
25/8
25/8
25/8
25/8
25/8
2
2
2
2
2
2
8
2
8
8
8
8
8
8
8
8
8
8
8
8
2
2
2
2
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
1
1
1
1
1
5
1
5
5
5
5
5
5
5
7
5
7
7
7
1
1
1
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7
7
7
7
5
5
5
5
5
7
5
7
7
7
7
7
7
7
7
7
5
5
5
5
5
7
7
7
7
7
7
7
7
7
5
5
5
5
5
7
7
7
7
7
7
7
7
7
5
5
5
7
7
7
7
7
7
7
5
5
5
7
7
7
7
7
7
7
Ckt B
Ckt A
Ckt B
027
Ckt A
Ckt B
030
Ckt A
Ckt B
040
Ckt A
Ckt B
050
Ckt A
Ckt B
060
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
Ckt A
Ckt B
070
Ckt A
Ckt B
080
11/8
11/8
11/8
11/8
11/8
11/8
7
Ckt A
Ckt B
/
8
090
11/8
11/8
11/8
11/8
11/8
11/8
Ckt A
Ckt B
100
LEGEND
L — Liquid Line
S — Suction Line
3. Suction and liquid line sizing is based on pressure drop equiva-
lent to 2 F (1.1 C) at nominal rating conditions.
4. All pipe sizes are OD inches. Equivalent sizes in millimeters
follow:
NOTES:
1. Shading indicates double suction riser required on units if con-
densing unit is located higher than evaporator.
in.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
1
/
/
2
2. Pipe sizes are based on an equivalent length equal to the max-
imum length of interconnecting piping, shown for each column,
plus 50% for fittings. Example: Equivalent length = Maximum
linear length x 1.5.
5
8
7
/
8
11/8
13/8
15/8
21/8
25/8
18
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Table 7 — Refrigerant Piping Requirements (cont)
38APS025-050 Single-Circuit Units (50 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
38APS
UNIT
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
75-100
100-125
125-150
150-175
175-200
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
(45.7-53.3)
(53.3-61.0)
SIZE
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
5
5
5
5
7
7
7
7
025
027
030
040
050
/
/
/
/
/
11/8
13/8
13/8
13/8
15/8
/
/
/
/
/
13/8
13/8
15/8
15/8
21/8
/
/
/
/
/
15/8
15/8
15/8
21/8
21/8
/
/
/
/
/
15/8
15/8
15/8
21/8
21/8
/
/
/
/
/
15/8
15/8
21/8
21/8
21/8
/
/
/
/
21/8
21/8
21/8
21/8
21/8
/
/
/
/
21/8
21/8
21/8
21/8
25/8
/
/
/
/
21/8
21/8
21/8
21/8
25/8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
5
5
5
5
5
5
7
7
5
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
11/8
11/8
11/8
38APD025-100 Dual-Circuit Units (50 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
(15.2-22.9)
75-100
(22.9-30.5)
100-125
(30.5-38.1)
125-150
(38.1-45.7)
150-175
(45.7-53.3)
175-200
(53.3-61.0)
38APD UNIT
SIZE
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
1
1
1
5
5
5
5
5
Ckt A
025
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
13/8
13/8
13/8
13/8
13/8
13/8
13/8
15/8
13/8
15/8
15/8
15/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
11/8
11/8
11/8
11/8
11/8
11/8
13/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
11/8
11/8
11/8
11/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
13/8
13/8
15/8
13/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
13/8
13/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
15/8
15/8
15/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
21/8
25/8
25/8
25/8
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
13/8
13/8
13/8
13/8
15/8
15/8
21/8
15/8
21/8
21/8
21/8
21/8
21/8
21/8
21/8
25/8
21/8
25/8
25/8
25/8
2
2
2
2
2
2
2
2
8
8
8
8
8
8
8
8
8
8
8
8
2
2
2
2
2
2
8
8
8
8
8
8
8
8
8
8
8
8
8
8
2
2
2
2
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
1
1
1
1
1
1
1
5
5
5
5
5
5
5
5
5
5
5
5
1
1
1
1
1
5
5
5
5
5
5
5
7
5
7
7
7
7
7
1
1
1
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7
5
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7
7
7
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7
7
7
7
5
5
5
5
5
5
5
7
7
7
7
7
7
7
5
5
5
5
5
7
7
7
7
7
7
7
7
7
5
5
5
5
5
7
7
7
7
7
7
7
7
7
Ckt B
Ckt A
Ckt B
027
Ckt A
Ckt B
030
Ckt A
Ckt B
040
Ckt A
Ckt B
050
Ckt A
Ckt B
060
Ckt A
Ckt B
070
Ckt A
Ckt B
080
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
11/8
7
Ckt A
Ckt B
/
8
090
11/8
11/8
11/8
Ckt A
Ckt B
100
LEGEND
L — Liquid Line
S — Suction Line
3. Suction and liquid line sizing is based on pressure drop equiva-
lent to 2 F (1.1 C) at nominal rating conditions.
4. All pipe sizes are OD inches. Equivalent sizes in millimeters
follow:
NOTES:
1. Shading indicates double suction riser required on units if con-
densing unit is located higher than evaporator.
in.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
1
/
/
2
2. Pipe sizes are based on an equivalent length equal to the max-
imum length of interconnecting piping, shown for each column,
plus 50% for fittings. Example: Equivalent length = Maximum
linear length x 1.5.
5
8
7
/
8
11/8
13/8
15/8
21/8
25/8
19
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Table 7 — Refrigerant Piping Requirements (cont)
38APS025-50 Single-Circuit Units Double Suction Riser (60 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
38APS
UNIT
SIZE
0-25
(0-7.6)
B
25-50
(7.6-15.2)
50-75
75-100
100-125
(30.5-38.1)
B
125-150
(38.1-45.7)
B
150-175
(45.7-53.3)
B
175-200
(53.3-61.0)
B
(15.2-22.9)
(22.9-30.5)
A
C
A
B
C
A
B
C
A
B
C
A
C
A
C
A
C
A
C
025
027
030
040
050
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
—
—
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8
—
38APD025-100 Dual-Circuit Units Double Suction Riser (60 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25
(0-7.6)
B
25-50
(7.6-15.2)
50-75
(15.2-22.9)
B
75-100
(22.9-30.5)
B
100-125
(30.5-38.1)
B
125-150
(38.1-45.7)
B
150-175
(45.7-53.3)
B
175-200
(53.3-61.0)
B
38APD UNIT
SIZE
A
C
A
B
C
A
C
A
C
A
C
A
C
A
C
A
C
Ckt A
025
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Ckt B
—
Ckt A
027
—
Ckt B
—
Ckt A
030
—
Ckt B
—
Ckt A
040
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8
Ckt B
—
—
—
—
—
—
—
Ckt A
050
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
060
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
070
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
080
—
—
—
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8 15/8 21/8 25/8
Ckt A
090
—
Ckt B
—
Ckt A
100
—
Ckt B
—
LEGEND
Not Required
Pipe A — Suction Riser without Trap
Pipe B — Suction Riser with Trap
Pipe C — Suction Line Condensing Unit
—
—
a38-4149tf
1. Refer to the figure located to the right for suction line piping locations.
2. Pipe sizes are based on an equivalent length equal to the maximum
length of interconnecting piping, shown for each column, plus 50% for
fittings.
3. Suction and liquid line sizing is based on pressure drop equivalent to 2 F
(1.1 C) at nominal rating conditions.
4. All pipe sizes are OD inches. Equivalent sizes in millimeters follow:
LEGEND
Suction Riser
—
—
—
—
without Trap
in.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
Suction Riser
with Trap
Suction Line to
Condensing Unit
Pipe Diameter to be
as Listed in Fig. 12.
1
/
2
5
/
8
7
/
8
11/8
13/8
15/8
21/8
25/8
SUCTION LINE PIPING
20
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Table 7 — Refrigerant Piping Requirements (cont)
38APS025-50 Single-Circuit Units Double Suction Riser (50 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
38APS
UNIT
SIZE
0-25
(0-7.6)
B
25-50
(7.6-15.2)
50-75
75-100
100-125
125-150
(38.1-45.7)
B
150-175
(45.7-53.3)
B
175-200
(53.3-61.0)
B
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
A
C
A
B
C
A
B
C
A
B
C
A
B
C
A
C
A
C
A
C
025
027
030
040
050
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
—
—
—
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
38APD025-100 Dual-Circuit Units Double Suction Riser (50 Hz)
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
0-25
(0-7.6)
B
25-50
(7.6-15.2)
50-75
(15.2-22.9)
B
75-100
(22.9-30.5)
B
100-125
(30.5-38.1)
B
125-150
(38.1-45.7)
B
150-175
(45.7-53.3)
B
175-200
(53.3-61.0)
B
38APD UNIT
SIZE
A
C
A
B
C
A
C
A
C
A
C
A
C
A
C
A
C
Ckt A
025
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Ckt B
—
Ckt A
027
—
Ckt B
—
Ckt A
030
—
Ckt B
—
Ckt A
040
—
13/8 15/8 21/8
Ckt B
—
—
—
—
Ckt A
050
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt B
—
Ckt A
060
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
070
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
080
—
—
—
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8
Ckt A
090
—
—
—
—
Ckt B
—
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
Ckt A
100
—
Ckt B
—
LEGEND
Not Required
Pipe A — Suction Riser without Trap
Pipe B — Suction Riser with Trap
Pipe C — Suction Line Condensing Unit
—
—
a38-4149tf
1. Refer to the figure located to the right for suction line piping locations.
2. Pipe sizes are based on an equivalent length equal to the maximum
length of interconnecting piping, shown for each column, plus 50% for
fittings.
3. Suction and liquid line sizing is based on pressure drop equivalent to 2 F
(1.1 C) at nominal rating conditions.
4. All pipe sizes are OD inches. Equivalent sizes in millimeters follow:
LEGEND
Suction Riser
—
—
—
—
without Trap
in.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
Suction Riser
with Trap
Suction Line to
Condensing Unit
Pipe Diameter to be
as Listed in Fig. 12.
1
/
2
5
/
8
7
/
8
11/8
13/8
15/8
21/8
25/8
SUCTION LINE PIPING
21
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LIQUID LINE SOLENOID VALVE — Field-supplied
liquid line solenoid valve(s) must be installed at the evaporator
if coil surface area is exceeded per Table 8. Install liquid line
solenoid valve just ahead of the TXVs (thermostatic expansion
valves) which will be mounted at the evaporator. See Fig. 13
(for 38APD025-100 dual-circuit units), or Fig. 14 (for
38APS025-050 single-circuit units). Refer to Table 6.
HOT GAS BYPASS — Hot gas bypass is not recommended.
If hot gas bypass is used, it should be introduced before the
evaporator.
FINAL CONNECTION AND LEAK TEST
CAUTION
THERMOSTATIC EXPANSION VALVES — All 38AP
units must be installed with 5% bleed TXVs to ensure proper
unit operation.
To achieve good mixing of the refrigerant leaving the evap-
orator suction header for proper sensing by the TXV bulb:
1. Install a minimum of two 90-degree elbows upstream
of the TXV bulb location. See Fig. 15 for dual-circuit
units and Fig. 16 for single-circuit units.
2. Locate the TXV bulb on a vertical riser, where possi-
ble. If a horizontal location is necessary, secure the
bulb at approximately the 4 o’clock position.
If an oil return connection is located at the bottom of the
evaporator suction header, tee-in this connection ahead of first
mixing elbow. See Fig. 15 (for dual-circuit units) or Fig. 16
(for single-circuit units). When the compressor is below the
evaporator, the riser at the evaporator should extend to the top
of the evaporator section. After the riser is installed, the suction
line can elbow down immediately. Refer to the evaporator
product data for sizing information.
LIQUID LINE FILTER DRIER — Installation of a field-
supplied filter drier and sight glasses in each refrigerant circuit
is required. Select the filter drier for maximum unit capacity
and minimum pressure drop. Figure 13 (for dual-circuit units)
or Fig. 14 (for single-circuit units) shows required location of
solenoid valves and recommended locations for the filter driers
and sight glasses. Complete the refrigerant piping from the
evaporator to the condenser before opening the liquid and suc-
tion lines at the condenser. Refer to Table 6.
The 38AP unit is shipped with a nitrogen holding charge.
Use caution when relieving unit pressure to avoid possible
equipment damage or personal injury.
Relieve the pressure caused by the nitrogen holding charge.
Connect liquid line and suction line to field piping. Refer to
Fig. 5-8 for circuit orientation.
IMPORTANT: Protect the liquid and suction service
valves from the heat of brazing. Schrader valve cores
must be removed from the liquid and suction service
valves before brazing in field connection piping to avoid
damage. Reinsert cores after brazing is completed.
The refrigerant system must not be opened and exposed to
atmosphere for longer than 15 minutes. Connection and pump-
down should be made as soon as possible to avoid acids
forming in the compressor POE (polyolester) oils, which could
damage the compressors.
Leak test the entire system by using soap bubbles and nitro-
gen or R-410A and an electronic leak detector.
Purge nitrogen or recover R-410A from system after com-
pletion of leak-checking procedure. Repair leak if one is found.
When finished, evacuate and dehydrate system using the fol-
lowing method.
EVACUATION AND DEHYDRATION — Because the
38AP systems use polyolester oil, which can absorb moisture,
it is important to minimize the amount of time that the system
interior is left exposed to the atmosphere. Minimizing the
exposure time of the oil to the atmosphere will minimize the
amount of moisture that needs to be removed during
evacuation.
Once all of the piping connections are complete, leak test
the unit and then pull a deep dehydration vacuum. Connect the
vacuum pump to the charging valve in the suction line and to
the liquid line service valve. For best results, it is recommended
that a vacuum of at least 500 microns (0.5 mm Hg) be ob-
tained. Afterwards, to ensure that no moisture is present in the
system, perform a standing vacuum-rise test.
With the unit in deep vacuum (500 microns or less), isolate
the vacuum pump from the system. Observe the rate-of-rise of
the vacuum in the system. If the vacuum rises by more than
50 microns in a 30-minute time period, then continue the dehy-
dration process. Maintain a vacuum on the system until the
standing vacuum requirement is met. This will ensure a dry
system.
CAUTION
For all units with liquid lines of 100 ft (30.5 m) or more or
any 025-030 size dual circuit unit application where evapo-
rator is located higher than the condensing unit and liquid
lines exceed 55 feet (16.8 m), a long line option kit must be
installed to prevent compressor failure. The long line
option kit must be mounted in the liquid line near the con-
densing unit. See Fig. 17.
LONG LINE APPLICATIONS — A long line option kit
must be installed for:
1. Any 025-030 size dual circuit unit where the evapora-
tor is located higher than the condensing unit and the
linear line length exceeds 55 ft (16.8 m).
2. Any size dual or single circuit unit with linear line
length of 100 ft (30.5 m) or more.
By following these evacuation and dehydration procedures,
the amount of moisture present in the system will be mini-
mized. It is required that liquid line filter driers be installed be-
tween the condenser(s) and the expansion devices to capture
any foreign debris and provide additional moisture removal ca-
pacity. Be sure to consider the pressure drop of the filter drier
when determining piping requirements.
The kit consists of a liquid line check valve and a bypass
check valve to prevent charge migration to compressor. The
long line option kit must be mounted in the liquid line near the
condensing unit. The kit may be mounted in any orientation,
horizontally or vertically. See Fig. 17 for orientation and
Fig. 11 for location.
22
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a38-7117
†
†
LEGEND
LLS — Liquid Line Solenoid
TXV — Thermostatic Expansion Valve
*Field-supplied.
†Field-supplied when required. See Table 8.
Fig. 13 — Required Location of Solenoid Valves and Recommended Filter Drier and
Sight Glass Locations for 38APD025-100 Dual-Circuit Units
a38-7118
SECTION 1
LIQUID
LINE
SECTION 2
SOLENOID VALVE†
SECTION 1
LIQUID
LINE
SECTION 2
SOLENOID VALVE†
*Field-supplied.
†Field-supplied when required. See Table 8.
Fig. 14 — Required Location of Solenoid Valves and Recommended Filter Drier and
Sight Glass Locations for 38APS025-050 Single-Circuit Units
23
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a38-7120
SECTION
SECTION
SECTION
SECTION
LEGEND
TXV — Thermostatic Expansion Valve
TYP — Typical
NOTE: For units with single condensate pan, lower coil section is first on, last off.
Fig. 15 — Typical Piping Connections for Face Split Coils for 38APD025-100 Dual-Circuit
SECTION
SECTION
SECTION
SECTION
a38-7121
LEGEND
TXV — Thermostatic Expansion Valve
TYP — Typical
NOTE: For units with single condensate pan, lower coil section is first on, last off.
Fig. 16 — Typical Piping Connections for Face Split Coils for 38APS025-050 Single-Circuit Units
24
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Table 8 — Requirements for Installation of Liquid Line Solenoid Valve
MAXIMUM ALLOWABLE EVAPORATOR SURFACE AREA
38AP UNIT
SIZE
WITHOUT LIQUID LINE SOLENOID VALVE (sq ft)
CIRCUIT
4-Row, 1/2 in. Tube 6-Row, 1/2 in. Tube 8-Row, 1/2 in. Tube 3-Row, 3/8 in. Tube 4-Row, 3/8 in. Tube
Circuit A
Circuit B
Single Circuit
Circuit A
Circuit B
Single Circuit
Circuit A
Circuit B
Single Circuit
Circuit A
Circuit B
Single Circuit
Circuit A
Circuit B
Single Circuit
Circuit A
Circuit B
Circuit A
Circuit B
Circuit A
Circuit B
Circuit A
18.9
18.9
37.9
21.7
25.6
47.3
21.7
25.6
47.3
47.3
47.3
94.7
47.3
47.3
94.7
47.3
47.3
69.7
69.7
69.7
104.6
104.6
104.6
104.6
104.6
12.7
12.7
25.3
14.5
17.1
31.6
14.5
17.1
31.6
31.6
31.6
63.3
31.6
31.6
63.3
31.6
31.6
46.6
46.6
46.6
69.9
69.9
69.9
69.9
69.9
9.5
9.5
36.1
36.1
72.3
41.4
48.9
90.3
41.4
48.9
90.3
—
—
—
—
—
—
—
—
—
28.1
28.1
56.3
32.3
38.1
70.4
32.3
38.1
70.4
—
—
—
—
—
—
—
—
—
025
027
030
040
050
18.9
10.9
12.8
23.7
10.9
12.8
23.7
23.7
23.7
47.3
23.7
23.7
47.3
23.7
23.7
34.9
34.9
34.9
52.3
52.3
52.3
52.3
52.3
060
070
080
090
100
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Circuit B
Circuit A
Circuit B
a38-7119
NOTE: Locate long line kit as close to the
condensing unit as possible.
Fig. 17 — Long Line Option Kit Installation
25
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CONTROL POWER — Control power is obtained from the
main power supply and does NOT require a separate source. A
toggle switch (marked Emergency On-Off on the unit label
diagram and by the switch) allows the control circuit to be
manually disconnected when necessary. Crankcase heaters are
in an operable state when this switch is in the Off position. All
field control wiring must comply with applicable local and
national codes.
Step 4 — Make Electrical Connections
WARNING
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
IMPORTANT: When starting up this equipment for
operation, be sure to check tightness of all electrical ter-
minal connections, clamps, screws, etc., as they may
have become loose during shipment. It is also advisable
to re-tighten all electrical connections after equipment
has been in operation and components have reacted to
operating temperature.
IMPORTANT: For 208-v systems, the connection tap
for all transformers must be changed. The factory
default setting is for 230-v. Failure to connect to the
proper tap may result in unreliable operation.
FIELD CONTROL WIRING — The standard unit control is
microprocessor based which supports multiple control
configurations. See Fig. 19 for EAT (evaporator air tempera-
ture sensor) and SAT (supply air temperature sensor) layout.
Figures 20-24 show specific field wiring, depending on unit
configuration and desired control requirements.
POWER SUPPLY — The electrical characteristics of the
available power supply must agree with the unit nameplate
rating. Supply voltage must be within the limits shown in
Tables 9-12. See Table 13 for incoming power options.
Constat Volume Application Control Options
IMPORTANT: Operating unit on improper supply
voltage or with excessive phase imbalance constitutes
abuse and may adversely affect Carrier warranty.
1. Two-Stage Thermostat (Part No. 33CS2PP2S-01) —
Refer to Fig. 20.
2. Two-Stage Thermostat (Part No. 33CS2PP2S-01) with
Multi-Step Control — Refer to Fig. 21. This thermo-
stat also requires installation of supply-air temperature
sensor and return-air temperature sensor (Part No.
33ZCSENSAT).
3. Space Sensor Control — Refer to Fig. 22. This control
also requires installation of supply-air temperature
sensor and return-air temperature sensor (Part No.
33ZCSENSAT).
CAUTION
Proper rotation of condenser fan(s) MUST be verified
before compressors are started. Consult the Controls, Start-
Up and Operation guide provided with the 38AP units for
correct procedure. Failure to comply could result in possi-
ble equipment damage.
a. Space Temperature Sensor with Occupancy Over-
ride Button (Part No. 33ZCT55SPT)
b. Space Temperature Sensor with Occupancy Over-
ride Button and Set Point Adjustment Slidebar
(Part No. 33ZCT56SPT)
c. Space Temperature Sensor with Occupancy Over-
ride Button, Set Point Adjustment Slidebar, and
LCD (liquid crystal display) Display (Part No.
33ZCT59SPT)
POWER WIRING — All power wiring must comply with
applicable local and national codes. Install field-supplied
branch circuit fused disconnect per NEC (National Electrical
Code, U.S.A) of a type that can be locked OFF or OPEN. Dis-
connect must be within sight and readily accessible from the
unit in compliance with NEC Article 440-14.
General Wiring Notes:
1. The control circuit does NOT require a separate power
source. Control circuit power is obtained by a step-down
transformer from the main three-phase power supply. Be
sure that the appropriate connection tap is connected on
all transformers for the supply voltage.
2. A low-voltage terminal strip (LVT) is provided for
field-wired control devices.
NOTE: The field-supplied disconnect should never be off
except when unit is being serviced or is to be down for a pro-
longed period.
Variable Air Volume Application Control Options
1. Discharge-air temperature control requires installation
of supply-air temperature sensor and return-air
temperature sensor (Part No. 33ZCSENSAT). Refer to
Fig. 23.
2. Interface with building automation system may require
EMM (energy management module) or translator
accessory. Refer to Fig. 23.
Energy Management Module (EMM) Option — The EMM
is available for factory or field installation. See Fig. 24 for
EMM field wiring.
3. Power entry is at one end only.
4. All field power enters the unit through a hole located in
the corner post of the unit or the bottom of the control box
shelf. Refer to Fig. 18 for field power wiring details. Re-
fer to Fig. 5-8 for exact location of field power entry.
5. Terminals for field power supply are suitable only for
copper conductors. Insulation must be rated 75 C
minimum.
6. Units with high short circuit ratings and terminal block
option require that specific fuses be applied to achieve
this rating. Refer to Table 13.
26
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a38-7122
LEGEND
b. Incoming wire size range for terminal block with MCA from 175.1 amps to
420 amps is 2 AWG to 600 kcmil.
EQUIP GND
NEC
—
—
Equipment Ground
National Electrical Code
c. Incoming wire size range for non-fused disconnect with MCA up to
100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA from
100.1 amp to 200 amps is 6 AWG to 350 kcmil.
NOTES:
1. Factory wiring is in accordance with UL 1995 standards. Field modifications
or additions must be in compliance with all applicable codes.
2. All units or modules have single point primary power connection. Main
power must be supplied from a field or factory-supplied disconnect.
3. Wiring for main field supply must be rated 75 C. Use copper conductors only.
a. Incoming wire size range for terminal block with MCA (minimum circuit
amps) up to 175 amps is 14 AWG (American Wire Gage) to 2/0.
e. Incoming wire size range for non-fused disconnect with MCA from
200.1 amp to 450 amps is 3/0 to 500 kcmil.
4. Refer to certified dimensional drawings for exact locations of the main power
and control power entrance locations.
Fig. 18 — Field Power Wiring
a38-7133
RETURN
AIR
EAT
SAT
FS1*
DUCT
SUPPLY
OUTSIDE
AIR
FAN
LEGEND
EAT — Evaporator Air Temperature Sensor
FS1 — Fan Status Switch (24-v)
SAT — Supply Air Temperature Sensor
EVAPORATOR
COIL
*FS1 can be pressure differential switch (shown), motor current detection, or sail switch.
Fig. 19 — EAT and SAT Sensor Layout
27
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LVT
TERMINAL
STRIP
*Not required for single circuit units.
Fig. 20 — Constant Volume Application Wiring Diagram 2-Stage Thermostat Control, Sizes 025-030 —
without Digital Scroll Option
LVT
TERMINAL
STRIP
*
a38-7126
*
*See Fig. 19 for EAT and SAT location.
†Not required for single circuit units.
Fig. 21 — Constant Volume Application Wiring Diagram 2-Stage Thermostat Control — with Digital Scroll
Option, Sizes 025-30 or without Digital Scroll Option, Sizes 040-100
28
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LVT
TERMINAL
STRIP
a38-7127
*
*See Fig. 19 for EAT and SAT location.
†Not required for single circuit units.
Fig. 22 — Constant Volume Application Wiring Diagram Space Temperature Sensor Control,
Sizes 025-100
LVT
TERMINAL
STRIP
a38-7128
*
*See Fig. 19 for EAT and SAT location.
†Not required for single circuit units.
Fig. 23 — Variable Air Volume Application Wiring Diagram, Sizes 025-100
29
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LVT
TERMINAL
STRIP
a38-7129
Fig. 24 — Optional Energy Management Module Wiring
Legend and Notes for Fig. 20-24
LEGEND
3. Wiring for main field supply must be rated 75 C. Use copper
conductors only.
ALM R
COM
— Alarm Relay (24-v), 5-va Maximum
— Communication
a. Incoming wire size range for terminal block with MCA (mini-
mum circuit amps) up to 175 amps is 14 AWG (American
Wire Gage) to 2/0.
b. Incoming wire size range for terminal block with MCA from
175.1 amps to 420 amps is 2 AWG to 600 kcmil.
c. Incoming wire size range for non-fused disconnect with MCA
up to 100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA
from 100.1 amp to 200 amps is 6 AWG to 350 kcmil.
e. Incoming wire size range for non-fused disconnect with MCA
from 200.1 amp to 450 amps is 3/0 to 500 kcmil.
COOL1
COOL2
EAT
— Thermostat Stage 1 (24-v)
— Thermostat Stage 2 (24-v)
— Evaporator Air Temperature Sensor
— Energy Management Module
EMM
EQUIP GND — Equipment Ground
FS1
LLSV
LVT
NEC
SA
SAT
SPT
— Fan Status Switch (24-v)
— Liquid Line Solenoid Valve
— Low Voltage Terminal
— National Electrical Code
— Set Point Adjustment (T-56, T-59)
— Supply Air Temperature Sensor
— Space Temperature Sensor (T-55, T-56, T-59)
Field Power Supply
4. Terminals 1 and 2 of the LVT are for the alarm relay. The maxi-
mum load allowed for the alarm relay is 5-va sealed and 10-va
inrush at 24-v. Field power supply is not required.
5. Refer to certified dimensional drawings for exact locations of
the main power and control power entrance locations.
6. Terminals 24, 25, and 2 of the LVT are for the control of the
field-supplied LLSV. The maximum load allowed for the LLSV is
15-va sealed and 30-va inrush at 24-v. Field power supply is not
required.
7. LLSV (24-v) should be 15-va maximum per valve as required.
8. Not used on single circuit unit.
9. Installation of fan status switch (FS1) is recommended.
10. The contacts for remote ON/OFF, fan status, and demand limit
options must be rated for dry circuit application capable of han-
dling a 24-vac load up to 50 mA.
Field Control Wiring
NOTES:
1. Factory wiring is in accordance with UL 1995 standards. Field
modifications or additions must be in compliance with all appli-
cable codes.
2. All units or modules have single point primary power connec-
tion. Main power must be supplied from a field or factory-
supplied disconnect.
30
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Table 9 — 38APS Standard Condenser Fan Electrical Data
SUPPLY
COMPRESSOR
RLA
CONDENSER FAN
38APS UNIT
SIZE
REC
FUSE
VOLTAGE
V-Ph-Hz
MCA
MOCP
ICF
Min
Max
Qty
LRA
Total Qty
FLA
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
48.1
23.7
18.6
14.7
18.6
245
145
125
100
118
6.6
3.9
3.3
2.6
3.3
121.4
61.1
48.5
38.3
48.5
150
80
150
70
60
45
60
306.3
176.5
150.2
119.9
143.2
025
027
030
040
050
460-3-60
2
2
2
2
3
3
60
575-3-60
380/415-3-50
50
60
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
300
139
150
109
140
6.6
3.9
3.3
2.6
3.3
128.6
68.3
58.6
50.0
58.6
175
90
150
80
70
60
70
364.5
173.7
179.7
134.1
169.7
460-3-60
2
2
3
3
80
575-3-60
60
380/415-3-50
80
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
55.8
34.0
26.9
23.7
26.9
340
196
179
132
174
6.6
3.9
3.3
2.6
3.3
138.8
84.3
67.1
58.5
67.1
175
110
90
80
90
175
100
80
70
80
409.0
237.8
212.5
160.9
207.5
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
300
139
150
109
140
6.6
3.9
3.3
2.6
3.3
186.5
99.1
85.0
72.5
85.0
225
125
100
90
200
110
100
80
422.4
204.5
206.1
156.6
196.1
460-3-60
575-3-60
380/415-3-50
100
100
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
55.8
34.0
26.9
23.7
26.9
340
196
179
132
174
6.6
3.9
3.3
2.6
3.3
201.2
122.2
97.3
84.8
97.3
250
150
110
100
110
225
150
110
100
110
471.4
275.7
242.7
187.2
237.7
460-3-60
575-3-60
380/415-3-50
Table 10 — 38APS Low Sound Condenser Fan Electrical Data
SUPPLY
COMPRESSOR
RLA
CONDENSER FAN
38APS UNIT
SIZE
REC
FUSE
VOLTAGE
V-Ph-Hz
MCA
MOCP
ICF
Min
Max
Qty
LRA
Total Qty
FLA
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
48.1
23.7
18.6
14.7
18.6
245
145
125
100
118
6.0
3.9
2.9
2.4
2.9
120.2
61.1
47.7
37.9
47.7
150
80
150
70
305.1
176.5
149.4
119.5
142.4
025
027
030
040
050
460-3-60
2
2
2
2
3
3
60
60
575-3-60
380/415-3-50
50
60
45
60
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
300
139
150
109
140
6.0
3.9
2.9
2.4
2.9
127.4
68.3
57.8
49.6
57.8
175
90
150
80
363.3
173.7
178.9
133.7
168.9
460-3-60
2
2
3
3
80
70
575-3-60
60
60
380/415-3-50
80
70
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
55.8
34.0
26.9
23.7
26.9
340
196
179
132
174
6.0
3.9
2.9
2.4
2.9
137.6
84.3
66.3
58.1
66.3
175
110
90
80
90
175
100
80
70
80
407.8
237.8
211.7
160.5
206.7
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
300
139
150
109
140
6.0
3.9
2.9
2.4
2.9
184.7
99.1
83.8
71.9
83.8
225
125
100
90
200
110
100
80
420.6
204.5
204.9
156.0
194.9
460-3-60
575-3-60
380/415-3-50
100
100
208/230-3-60
380-3-60
187
342
414
518
342
254
418
506
632
440
55.8
34.0
26.9
23.7
26.9
340
196
179
132
174
6.0
3.9
2.9
2.4
2.9
199.4
122.2
96.1
84.2
96.1
250
150
110
100
110
225
150
110
100
110
469.6
275.7
241.5
186.6
236.5
460-3-60
575-3-60
380/415-3-50
LEGEND
4. Wiring for main field supply must be rated 75 C. Use copper conductors
only.
FLA
ICF
—
—
—
—
Full Load Amps
a. Incoming wire size range for terminal block with MCA up to 175 amps is
14 AWG (American Wire Gage) to 2/0.
b. Incoming wire size range for terminal block with MCA from 175.1 amps
to 420 amps is 2 AWG to 600 kcmil.
c. Incoming wire size range for non-fused disconnect with MCA up to
100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA from
100.1 amp to 200 amps is 6 AWG to 350 kcmil.
e. Incoming wire size range for non-fused disconnect with MCA from
200.1 amp to 450 amps is 3/0 to 500 kcmil.
Maximum Instantaneous Current Flow
Locked Rotor Amps
LRA
MCA
Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
RLA
—
Rated Load Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to
the unit terminals is not below or above the listed minimum and maximum
limits. Maximum allowable phase imbalance is: voltage 2%; amps 10%.
2. All units or modules have single point primary power connection. Main
power must be supplied from a field-supplied disconnect.
3. For MCA that is less than or equal to 380 amps, 3 conductors are
required.
For MCA between 381 and 760 amps, 6 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
31
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Table 11 — 38APD Standard Condenser Fan Electrical Data
COMPRESSOR
CIRCUIT A CIRCUIT B
Qty RLA LRA Qty RLA LRA
CONDENSER FAN
Total
FLA
Qty
SUPPLY
38APD
UNIT
SIZE
REC
FUSE
VOLTAGE
V-Ph-Hz
MCA
MOCP
ICF
Min Max
208/230-3-60 187
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
48.1
23.7
18.6
14.7
18.6
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
35.8
23.7
17.9
14.3
17.9
51.3
26.9
23.1
19.9
23.1
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
48.1
23.7
18.6
14.7
18.6
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
33.4
19.2
16.7
13.4
16.7
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
46.1
23.7
18.6
14.7
18.6
55.8
34.0
26.9
23.7
26.9
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
6.6
3.9
3.3
2.6
3.3
121.4
61.1
48.5
38.3
48.5
128.6
68.3
58.6
50.0
58.6
138.8
84.3
67.1
58.5
67.1
167.2
103.5
83.6
66.7
83.6
231.4
119.6
99.1
82.0
99.1
254.6
145.9
119.9
103.5
119.9
296.3
163.2
129.5
107.8
129.5
326.0
198.0
157.7
137.4
157.7
374.9
214.6
176.5
152.3
176.5
150
80
150
70
306.3
176.5
150.2
119.9
143.2
364.5
173.7
179.7
134.1
169.7
409.0
237.8
212.5
160.9
207.5
361.4
218.9
186.2
128.8
179.2
467.3
225.0
220.2
166.1
210.2
524.8
299.4
265.3
205.9
260.3
566.5
316.7
274.9
210.2
269.9
596.2
351.5
303.1
239.8
298.1
380-3-60
460-3-60
575-3-60
342
414
518
025
027
030
040
050
060
070
080
090
100
1
1
1
2
2
2
2
2
3
3
1
1
1
2
2
2
3
3
3
3
2
2
2
3
3
4
4
5
6
6
60
60
50
60
45
60
380/415-3-50 342
208/230-3-60 187
175
90
150
80
380-3-60
460-3-60
575-3-60
342
414
518
80
70
60
60
380/415-3-50 342
208/230-3-60 187
80
70
175
110
90
80
90
175
100
80
70
80
175
110
90
70
90
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
239
145
125
80
225
140
114
80
200
125
100
80
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
118
111
100
300
139
150
109
140
300
139
150
109
140
340
196
179
132
174
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
245
145
125
100
118
340
196
179
132
174
340
196
179
132
174
340
196
179
132
174
250
125
110
100
110
300
175
125
125
125
300
175
150
125
150
350
225
175
150
175
400
225
200
175
200
400
250
200
175
200
250
125
110
90
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
110
300
175
125
110
125
300
175
150
125
150
350
225
175
150
175
400
225
200
150
200
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
254
418
506
632
440
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
645.1
368.1
321.9
254.7
311.9
658.6
389.4
333.3
266.1
328.3
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
388.4
235.9
187.9
163.7
187.9
400
250
200
175
200
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
LEGEND
4. Wiring for main field supply must be rated 75 C. Use copper
conductors only.
FLA — Full Load Amps
a. Incoming wire size range for terminal block with MCA up to
175 amps is 14 AWG (American Wire Gage) to 2/0.
b. Incoming wire size range for terminal block with MCA from
175.1 amps to 420 amps is 2 AWG to 600 kcmil.
c. Incoming wire size range for non-fused disconnect with MCA
up to 100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA
from 100.1 amp to 200 amps is 6 AWG to 350 kcmil.
e. Incoming wire size range for non-fused disconnect with MCA
from 200.1 amp to 450 amps is 3/0 to 500 kcmil.
ICF — Maximum Instantaneous Current Flow
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP— Maximum Overcurrent Protection
RLA — Rated Load Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage
supplied to the unit terminals is not below or above the listed
minimum and maximum limits. Maximum allowable phase
imbalance is: voltage 2%; amps 10%.
2. All units or modules have single point primary power connec-
tion. Main power must be supplied from a field-supplied
disconnect.
3. For MCA that is less than or equal to 380 amps, 3 conductors
are required.
For MCA between 381 and 760 amps, 6 conductors are
required.
Calculation of conductors required is based on 75 C copper
wire.
32
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Table 12 — 38APD Low Sound Condenser Fan Electrical Data
COMPRESSOR
CIRCUIT A CIRCUIT B
Qty RLA LRA Qty RLA LRA
CONDENSER FAN
Total
FLA
Qty
SUPPLY
38APD
UNIT
SIZE
REC
FUSE
VOLTAGE
V-Ph-Hz
MCA
MOCP
ICF
Min Max
208/230-3-60 187
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
254
418
506
632
440
48.1
23.7
18.6
14.7
18.6
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
35.8
23.7
17.9
14.3
17.9
48.1
23.7
18.6
14.7
18.6
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
48.1
23.7
18.6
14.7
18.6
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
33.4
19.2
16.7
13.4
16.7
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
46.1
23.7
18.6
14.7
18.6
55.8
34.0
26.9
23.7
26.9
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
6.0
3.9
2.9
2.4
2.9
120.2
61.1
47.7
37.9
47.7
127.4
68.3
57.8
49.6
57.8
137.6
84.3
66.3
58.1
66.3
165.4
103.5
82.4
66.1
82.4
229.6
119.6
97.9
81.4
97.9
252.2
145.9
118.3
102.7
118.3
293.9
163.2
127.9
107.0
127.9
323.0
198.0
155.7
136.4
155.7
371.3
214.6
174.1
151.1
174.1
150
80
150
70
305.1
176.5
149.4
119.5
142.4
363.3
173.7
178.9
133.7
168.9
407.8
237.8
211.7
160.5
206.7
359.6
218.9
185.0
128.2
178.0
465.5
225.0
219.0
165.5
212.0
522.4
299.4
263.7
205.1
253.7
564.1
316.7
273.3
209.4
268.3
587.2
347.6
298.2
236.4
293.2
380-3-60
460-3-60
575-3-60
342
414
518
025
027
030
040
050
060
070
080
090
100
1
1
1
2
2
2
2
2
3
3
1
1
1
2
2
2
3
3
3
3
2
2
2
3
3
4
4
5
6
6
60
60
50
60
45
60
380/415-3-50 342
208/230-3-60 187
175
90
150
80
380-3-60
460-3-60
575-3-60
342
414
518
80
70
60
60
380/415-3-50 342
208/230-3-60 187
80
70
175
110
90
80
90
175
100
80
70
80
175
110
90
70
90
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
239
145
125
80
225
140
114
80
200
125
100
80
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
118
111
100
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
245
145
125
100
118
340
196
179
132
174
340
196
179
132
174
340
196
179
132
174
250
125
110
100
110
300
175
125
125
125
300
175
150
125
150
350
225
175
150
175
400
225
200
175
200
400
250
200
175
200
250
125
110
90
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
110
300
175
125
110
125
300
175
150
125
150
350
225
175
150
175
400
225
200
150
200
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
254
418
506
632
440
254
418
506
632
440
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
55.8
34.0
26.9
23.7
26.9
641.5
368.1
319.5
253.5
309.5
655.0
389.4
330.9
264.9
325.9
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
208/230-3-60 187
384.8
235.9
185.5
162.5
185.5
400
250
200
175
200
380-3-60
460-3-60
575-3-60
342
414
518
380/415-3-50 342
LEGEND
4. Wiring for main field supply must be rated 75 C. Use copper
conductors only.
FLA — Full Load Amps
a. Incoming wire size range for terminal block with MCA up to
175 amps is 14 AWG (American Wire Gage) to 2/0.
b. Incoming wire size range for terminal block with MCA from
175.1 amps to 420 amps is 2 AWG to 600 kcmil.
c. Incoming wire size range for non-fused disconnect with MCA
up to 100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA
from 100.1 amp to 200 amps is 6 AWG to 350 kcmil.
e. Incoming wire size range for non-fused disconnect with MCA
from 200.1 amp to 450 amps is 3/0 to 500 kcmil.
ICF — Maximum Instantaneous Current Flow
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP— Maximum Overcurrent Protection
RLA — Rated Load Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage
supplied to the unit terminals is not below or above the listed
minimum and maximum limits. Maximum allowable phase
imbalance is: voltage 2%; amps 10%.
2. All units or modules have single point primary power connec-
tion. Main power must be supplied from a field-supplied
disconnect.
3. For MCA that is less than or equal to 380 amps, 3 conductors
are required.
For MCA between 381 and 760 amps, 6 conductors are
required.
Calculation of conductors required is based on 75 C copper
wire.
33
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Table 13 — Unit Incoming Power Options
UNIT INCOMING POWER OPTION
Standard Terminal
Block Option
Standard and High SCCR
Disconnect Option
High SCCR Terminal Block Option
MOCP VALUE
100 A or less
Greater than
100 A and Less than
or Equal to 200 A
Max
Wire Size
Min
Wire Size
Max
Wire Size
Min
Wire Size
High SCCR
Fuse Type
Min
Wire Size
Max Wire Size
2/0
#14 AWG
#14 AWG
2/0
#6 AWG
#6 AWG
J, RK1, or RK5
1/0
#14 AWG
2/0
2/0
J or RK1
J or RK1
350 kcmil
#6 AWG
500 kcmil (1)
500 kcmil (2)
Greater than 200
600 kcmil
#2
600 kcmil
3/0
3/0
LEGEND
AWG — American Wire Gage
kcmil — Thousand Circular Mills
MOCP — Maximum Overcurrent Protection
SCCR — Short Circuit Current Rating
NOTES:
1. Terminal block high SCCR option units must use approved
fuses to meet high SCCR rating.
2. High SCCR disconnect option units can use either approved
fuse or circuit breaker for incoming power protection.
3. Time delay fuse type required.
MISCELLANEOUS ACCESSORIES — Energy manage-
ment module, Navigator™ display, remote enhanced display,
Touch Pilot™ display, BACnet™ translator control, LON (lo-
cal operating network) translator control, and long line acces-
sory kit are available for special applications.
Step 5 — Install Accessories
LOW-AMBIENT OPERATION — If operating temperatures
below those found in Table 14 are expected, Motormaster® V
fan motor control is recommended.
Table 14 — 38AP Unit Low Ambient Limitations
Single Circuit
MINIMUM LOW
AMBIENT
(Standard Unit)
MINIMUM LOW AMBIENT
MOTORMASTER® CONTROL
(Factory-Installed Option)
38APS
UNIT SIZE
025-050
45 F (7.2 C)
–20 F (–28.9 C)
Dual Circuit
MINIMUM LOW
AMBIENT
(Standard Unit)
MINIMUM LOW AMBIENT
MOTORMASTER CONTROL
(Factory-Installed Option)
38APD
UNIT SIZE
025-040
050-060
070-100
32 F (0 C)
25 F (–3.9 C)
32 F (0 C)
–20 F (–28.9 C)
–20 F (–28.9 C)
–20 F(–28.9 C)
34
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Copyright 2009 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53380002-01
Printed in U.S.A.
Form 38AP-1SI
Pg 36
8-09
Replaces: New
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