Carrier 38APD025-100 Air Conditioner User Manual

GEMINI™ SELECT
38APS025-050,38APD025-100 Air-Cooled Condensing Units
with PURON® Refrigerant (R-410A)
50/60 Hz
Installation Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
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
• LONG LINE APPLICATIONS
• HOT GAS BYPASS
• FINAL CONNECTION AND LEAK TEST
• EVACUATION AND DEHYDRATION
Step 4 — Make Electrical Connections . . . . . . . . . . 26
• POWER SUPPLY
• POWER WIRING
• CONTROL POWER
• FIELD CONTROL WIRING
Step 5 — Install Accessories . . . . . . . . . . . . . . . . . . . . 34
• LOW-AMBIENT OPERATION
• MISCELLANEOUS ACCESSORIES
SAFETY CONSIDERATIONS
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.
Untrained personnel can perform basic maintenance functions, 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.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky
equipment.
CAUTION
Puron refrigerant (R-410A) systems operate at higher pressures 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
Step 1 — Inspect Shipment — Inspect unit for damage 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 nomenclature shown in Fig. 1. See Tables 1-4 for unit physical data.
Step 2 — Rig and Place Unit — All units are de-
signed for overhead rigging, and it is important that this method 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.
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.
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 cables are detached.
CAUTION
All panels must be in place when rigging. Failure to comply could result in equipment damage.
CAUTION
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.
WARNING
Open all remote disconnects before servicing this equipment. Failure to do so could result in personal injury from
electric shock.
CAUTION
For unit sizes 070 to 100, do not forklift the unit unless unit
is attached to a skid designed for forklifting. Failure to follow this caution could result in equipment damage or personal 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
4 x 24 in. perimeter support ASTM “C” channels between unit
and the isolators are recommended with a minimum of 4 channels per unit. Fasteners for mounting unit are field supplied.
See Fig. 4.
Refer to Fig. 5-8 for airflow clearances. Recommended
minimum clearances are 6 ft (1829 mm) for unrestricted airflow and service on sides of unit, 4 ft (1219 mm) on ends, and
unrestricted clear air space above the unit. Provide ample space
to connect liquid and suction lines to indoor unit. For multiple
units, allow 10 ft (3048 mm) separation between airflow
surfaces. If walls surround the unit, wall height should not exceed the top of the unit fan discharge. Installation in a pit is not
recommended.
DOMESTIC UNITS — Standard 38AP unit packaging consists of coil protection only. Skids are not provided. If overhead
rigging is not available at the jobsite, place the unit on a skid or
pad before dragging or rolling. When rolling, use a minimum
of 3 rollers. When dragging, pull the pad or skid. Do not apply
force to the unit. When in final position, raise from above to lift
unit off the pad or skid.
EXPORT UNITS — All export units are mounted on skids
with vertical coil protection. Leave the unit on the skid until it
is in final position. While on the skid, the unit can be rolled or
skidded. Apply force to the skid, not to the unit. Use a minimum of 3 rollers when rolling. When in final position, raise
from above to remove the skid.
PLACING UNITS — When considering location of the unit,
be sure to consult National Electrical Code (NEC, U.S.A.) and
local code requirements. Allow sufficient space for airflow,
wiring, piping, and service. The placement area must be level
and strong enough to support the operating weight of the unit.
(See Table 5.) When unit is in proper location, use of mounting
holes in base rails is recommended for securing unit to
supporting structure. For mounting unit on vibration isolators,
38AP
D
025
6
4
IMPORTANT: Be sure to mount unit level to ensure
proper oil return to compressors.
Refer to Fig. 9 for outdoor fan and compressor layout.
Refer to Fig. 10 and 11 for unit piping installation. See
Table 6 for refrigerant specialties part numbers.
A
1
0
0
5
38AP – Split System Condensing Unit
Packaging/Security Options
0 – Std Packaging
8 – Std Packaging, Bottom Skid
J – Bottom Skid, Top Crate, Bag
Refrigeration Circuit Options*
D – Dual Refrigeration Circuit
S – Single Refrigeration Circuit
Nominal Capacity – Tons (kW)
025 – 25 (88) 050 – 50 (176)
027 – 27 (95) 060 – 60 (211)
030 – 30 (106) 070 – 70 (246)
040 – 40 (141) 080 – 80 (281)
0
Controls/Communications Options
2 – Scrolling Marquee
3 – EMM, Scrolling Marquee
5 – No Display
090 – 90 (317)
100 – 100 (352)
Electrical Options
0 – Single Point Power, Terminal Block
1 – Single Point Power,
Non-Fused Disconnect
Pow er Supply
1 – 575-3-60
2 – 380-3-60
5 – 280/230-3-60
6 – 460-3-60
9 – 380/415-3-50
Ambient/Capacity Control/
Interrupt Options
0 – Std Ambient, Std Compressor,
Std Interrupt
2 – Std Ambient, Digital Compressor,
Std Interrupt
3 – Std Ambient, Std Compressor,
High Interrupt
5 – Std Ambient, Digital Compressor,
High Interrupt
6 – Low Ambient, Std Compressor,
Std Interrupt
8 – Low Ambient, Digital Compressor,
Std Interrupt
9 – Low Ambient, Std Compressor,
High Interrupt
C – Low Ambient, Digital Compressor,
High Interrupt
Condenser Coil/Low Sound Options
4 – MCHX, No Sound Treatment
5 – E-coat, MCHX, No Sound Treatment
C – MCHX, Low Sound Fan(s)
D – E-coat MCHX, Low Sound Fan(s)
H – MCHX, Low Sound Fan(s), Compressor Blankets
J – E-coat MCHX, Low Sound Fan(s), Compressor Blankets
Revision Level
A – Current Revision Level
a38-7100.eps
LEGEND
EMM — Energy Management Module
MCHX — Microchannel Heat Exchanger
Line Length Options
1 – Standard Line Length
2 – Long Line Length Check Valves
*38APS units available in sizes 025-050 only.
Fig. 1 — Model Number Nomenclature
2
Table 1 — 38AP025-050 Unit Physical Data — English
38AP UNIT SIZE
025
NOMINAL CAPACITY, 50/60Hz (tons)
21/25
CIRCUIT
Dual
Single
OPERATING WEIGHTS (lb)
Standard
1095
1077
With Low Sound Option
1131
1113
APPROXIMATE REFRIGERANT CHARGE,
28
24
TYPICAL (lb)*
NITROGEN SHIPPING CHARGE
COMPRESSOR
11 (2)
11 (2)
hp (Qty) (CKT A/CKT B)
CAPACITY STEPS
Standard
2
2
Digital Option
22
22
CRANKCASE HEATER (W) (each compressor)
CONDENSER FANS
Standard
Quantity
2
2
RPM
Diameter (in.)
Total Watts (60 Hz)
3300
3300
Total Watts (50 Hz)
2750
2750
Low Noise
Quantity
2
2
RPM
Diameter (in.)
Total Watts (60 Hz)
2750
2750
Total Watts (50 Hz)
2300
2300
CONDENSER COIL
No. Coils per Circuit
sq ft
27.1
27.1
TEMPERATURE RELIEF
CONNECTIONS (in.) ODF (CKT A/CKT B)
15/8
Suction Line
13/8 / 13/8
5/
5/ / 5/
Liquid Line
8
8
8
MAXIMUM HEIGHT FOR 3° F SUBCOOLING
75
75
(ft)†
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
50/50
100
MINIMUM UNIT CAPACITY (%)
50
50
MCHX
ODF
—
—
027
23/27
030
25/30
040
33/40
050
42/50
Dual
Single
Dual
Single
Dual
Single
Dual
Single
1258
1294
30
1240
1276
26
1264
1300
30
1246
1282
26
2094
2148
52
1968
2022
40
2120
2174
52
1977
2031
40
13 (2)
13 (2)
15 (2)
15 psig
15 (2)
10 (2)/
8.5 (2)
13 (3)
11 (2)/
13 (2)
15 (3)
2
22
2
22
2
22
4
44
3
33
4
44
3
33
3
3
3
4200
3500
4200
3500
4200
3500
3
3
3
3500
2900
3500
2900
3500
2900
67.8
67.8
2
22
90
Propeller Type - Direct Drive
2
2
3
1140 (60 Hz), 950 (50 Hz)
30
3300
3300
3300
4200
2750
2750
2750
3500
Shrouded Axial Fan - Direct Drive
2
2
2
3
850 (60 Hz), 700 (50 Hz)
30
2750
2750
2750
3500
2300
2300
2300
2900
MCHX Type
2
2
3300
2750
2
2750
2300
1
33.9
1
33.9
33.9
33.9
67.8
67.8
Fusible Plug on Liquid Lines of Each Circuit - 210 F
13/8 / 13/8
5/ / 5/
8
8
75
15/8
5/
8
75
13/8 / 13/8
5/ / 5/
8
8
75
15/8
7/
8
75
15/8 / 15/8
5/ / 5/
8
8
75
21/8
7/
8
75
15/8 / 15/8
5/ / 5/
8
8
75
21/8
7/
8
75
50/50
50
100
50
50/50
50
100
50
54/46
23
100
33
48/52
23
100
33
LEGEND
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
Table 2 — 38AP060-100 Unit Physical Data — English
38AP UNIT SIZE
NOMINAL CAPACITY, 50/60Hz (tons)
CIRCUIT
OPERATING WEIGHTS (lb)
Standard
With Low Sound Option
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (lb)*
NITROGEN SHIPPING CHARGE
COMPRESSOR
hp (Qty) (CKT A/CKT B)
CAPACITY STEPS
Standard
Digital Option
CRANKCASE HEATER (W) (each compressor)
CONDENSER FANS
Standard
Quantity
RPM
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
Low Noise
Quantity
RPM
Diameter (in.)
Total Watts (60 Hz)
Total Watts (50 Hz)
CONDENSER COIL
No. Coils per Circuit
sq ft
TEMPERATURE RELIEF
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
Liquid Line
MAXIMUM HEIGHT FOR 3° F SUBCOOLING
(ft)†
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
MCHX
ODF
—
—
060
50/60
Dual
070
58/70
Dual
080
67/80
Dual
090
75/90
Dual
100
83/100
Dual
2227
2299
60
2450
2522
70
2610
2700
78
2835
2943
96
2844
2952
100
13 (2)/15 (2)
15 (2)/11 (3)
15 psig
15 (2)/15 (3)
13 (3)/15 (3)
15 (3)/15 (3)
4
44
5
55
6
66
6
66
4
6200
5150
4
5200
4300
1
67.8
5
55
90
Propeller Type - Direct Drive
5
6
1140 (60 Hz), 950 (50 Hz)
30
6000
7500
9000
5000
6250
7500
Shrouded Axial Fan - Direct Drive
4
5
6
850 (60 Hz), 700 (50 Hz)
30
5000
6250
7500
4150
5200
6250
MCHX Type
2
2 to 3
3
99.6
124.5
149.4
Fusible Plug on Liquid Lines of Each Circuit - 210 F
4
6
9000
7500
6
7500
6250
3
149.4
15/8 / 15/8
5/8 / 7/8
75
15/8 / 21/8
7/8 / 7/8
75
15/8 / 21/8
7/8 / 7/8
75
21/8 / 21/8
7/8 / 7/8
75
21/8 / 25/8
7/8 / 7/8
75
46/54
23
47/53
24
40/60
20
46/54
15
50/50
17
LEGEND
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
Table 3 — 38AP025-050 Unit Physical Data — SI
38AP UNIT SIZES
025
NOMINAL CAPACITY 50/60 Hz (kW)
74/88
CIRCUIT
Dual
Single
OPERATING WEIGHTS (kg)
Standard
497
489
With Low Sound Option
513
505
APPROXIMATE REFRIGERANT CHARGE,
12.7
10.9
TYPICAL (kg)*
NITROGEN SHIPPING CHARGE
COMPRESSOR
8.2 (2)
8.2 (2)
kW (Qty) (CKT A/CKT B)
CAPACITY STEPS
Standard
2
2
Digital Option
22
22
CRANKCASE HEATER (W) (each compressor)
CONDENSER FANS
Standard
Quantity
2
2
r/s
Diameter (mm)
Total Watts (60 Hz)
3300
3300
Total Watts (50 Hz)
2750
2750
Low Noise
Quantity
2
2
r/s
Diameter (mm)
Total Watts (60 Hz)
2750
2750
Total Watts (50 Hz)
2300
2300
CONDENSER COIL
No. Coils per Circuit
sq m
2.5
2.5
TEMPERATURE RELIEF
CONNECTIONS (in.) ODF (CKT A/CKT B)
15/8
Suction Line
13/8 / 13/8
5/
5/ / 5/
Liquid Line
8
8
8
MAXIMUM HEIGHT FOR 1.7° C
23
23
SUBCOOLING (m)†
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
MCHX
ODF
—
—
027
81/95
Dual
Single
571
587
13.6
562
579
11.8
9.7 (2)
9.7 (2)
2
22
2
22
030
88/106
Dual
Single
040
116/141
Dual
Single
050
148/176
Dual
Single
573
590
13.6
950
974
23.6
893
917
18.1
961
986
23.6
897
921
18.1
7.5 (2)/
6.3 (2)
9.7 (3)
8.2 (2)/
9.7 (2)
11.2 (3)
4
44
3
33
4
44
3
33
3
3
3
4200
3500
4200
3500
4200
3500
3
3
3
3500
2900
3500
2900
3500
2900
6.3
6.3
565
582
11.8
1.03 bar
11.2 (2)
11.2 (2)
2
22
2
22
90
Propeller Type - Direct Drive
2
2
3
19 (60 Hz), 16 (50 Hz)
762
3300
3300
3300
4200
2750
2750
2750
3500
Shrouded Axial Fan - Direct Drive
2
2
2
3
14 (60 Hz), 12 (50 Hz)
762
2750
2750
2750
3500
2300
2300
2300
2900
MCHX Type
2
2
3300
2750
2
2750
2300
1
3.2
1
3.2
3.2
3.2
6.3
6.3
Fusible Plug on Liquid Lines of Each Circuit - 99 C
13/8 / 13/8
5/ / 5/
8
8
23
15/8
5/
8
23
13/8 / 13/8
5/ / 5/
8
8
23
15/8
7/
8
23
15/8 / 15/8
5/ / 5/
8
8
23
21/8
7/
8
23
15/8 / 15/8
5/ / 5/
8
8
23
21/8
7/
8
23
50/50
100
50/50
100
50/50
100
54/46
100
48/52
100
50
50
50
50
50
50
23
33
23
33
LEGEND
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
Table 4 — 38AP060-100 Unit Physical Data — SI
38AP UNIT SIZES
NOMINAL CAPACITY 50/60 Hz (kW)
CIRCUIT
OPERATING WEIGHTS (kg)
Standard
With Low Sound Option
APPROXIMATE REFRIGERANT CHARGE,
TYPICAL (kg)*
NITROGEN SHIPPING CHARGE
COMPRESSOR
kW (Qty) (CKT A/CKT B)
CAPACITY STEPS
Standard
Digital Option
CRANKCASE HEATER (W) (each compressor)
CONDENSER FANS
Standard
Quantity
r/s
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
Low Noise
Quantity
r/s
Diameter (mm)
Total Watts (60 Hz)
Total Watts (50 Hz)
CONDENSER COIL
No. Coils per Circuit
sq m
TEMPERATURE RELIEF
CONNECTIONS (in.) ODF (CKT A/CKT B)
Suction Line
Liquid Line
MAXIMUM HEIGHT FOR 1.7° C
SUBCOOLING (m)†
CAPACITY PER CIRCUIT (%) (CKT A/CKT B)
MINIMUM UNIT CAPACITY (%)
MCHX
ODF
—
—
060
176/211
Dual
070
204/246
Dual
080
236/281
Dual
090
264/317
Dual
100
292/352
Dual
1010
1043
27.2
1111
1144
31.8
1184
1225
35.4
1286
1335
43.5
1290
1339
45.4
9.7 (2)/11.2 (2)
11.2 (2)/8.2 (3)
1.03 bar
11.2 (2)/11.2 (3)
9.7 (3)/11.2 (3)
11.2 (3)/11.2 (3)
4
44
5
55
6
66
6
66
4
6200
5150
4
5200
4300
1
6.3
5
55
90
Propeller Type - Direct Drive
5
6
19 (60 Hz), 16 (50 Hz)
762
6000
7500
9000
5000
6250
7500
Shrouded Axial Fan - Direct Drive
4
5
6
14 (60 Hz), 12 (50 Hz)
762
5000
6250
7500
4150
5200
6250
MCHX Type
2
2-3
3-3
9.3
11.6
13.9
Fusible Plug on Liquid Lines of Each Circuit - 99 C
4
6
9000
7500
6
7500
6250
3-3
13.9
15/8 / 15/8
5/8 / 7/8
23
15/8 / 21/8
7/8 / 7/8
23
15/8 / 21/8
7/8 / 7/8
23
21/8 / 21/8
7/8 / 7/8
23
21/8 / 25/8
7/8 / 7/8
23
46/54
23
47/53
24
40/60
20
46/54
15
50/50
17
LEGEND
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
Table 5 — Operational Corner Weights with Refrigerant Charge (Approximate)
38APS Unit (lb)
A
B
C
D
356
396
399
619
623
253
291
293
616
620
200
240
241
380
381
281
327
328
382
383
38APS
UNIT
SIZE
025
027
030
040
050
494
569
572
906
910
OPERATIONAL CORNER WEIGHT
A
B
C
D
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
C
B
D
A
38APD
UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
502
577
580
963
975
1024
1131
1209
1316
1320
C
B
D
A
TOP VIEW, SIZES 040 TO 060
Fig. 2 — Corner Weights
7
A
B
C
D
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
C
CONTROL BOX
COMP
COMP
CONTROL BOX
COMP
COMP
CONTROL
BOX
TOP VIEW,
SIZES 025 TO 030
127
148
149
173
174
OPERATIONAL CORNER WEIGHT
TOTAL
WEIGHT
COMP
a38-7114
A
D
91
109
109
173
173
COMP
B
C
COMP
1107
1273
1279
2124
2150
2257
2494
2665
2901
2910
B
115
132
133
280
281
38APD Unit (kg)
COMP
TOTAL
WEIGHT
A
161
180
181
281
282
COMP
38APD Unit (lb)
38APD
UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
OPERATIONAL CORNER WEIGHT
TOTAL
WEIGHT
COMP
1089
1255
1261
1998
2007
OPERATIONAL CORNER WEIGHT
COMP
TOTAL
WEIGHT
COMP
38APS
UNIT
SIZE
025
027
030
040
050
38APS Unit (kg)
D
TOP VIEW, SIZES 070 TO 100
a38-7115
a38-7116
SIZES 025 TO 060
SIZES 070 TO 100
Fig. 3 — Rigging Labels
a38-7130
LEGEND
ASTM — American Society for
Testing and Materials
4 x 24 in.
ASTM “C”
CHANNEL
Fig. 4 — Perimeter Support Channel
8
9
1077 (489)
1095 (497)
1240 (563)
1258 (571)
1246 (565)
1264 (573)
1113 (505)
1131 (513)
1276 (579)
1294 (587)
1282 (582)
1300 (590)
STANDARD
WEIGHT, lb (kg)
CENTER OF GRAVITY,
in. (mm)
X
Y
17.8 (452)
36.9 (937)
17.8 (452)
37.0 (940)
18.2 (462)
37.6 (955)
18.2 (462)
37.6 (955)
18.2 (462)
37.5 (953)
18.2 (462)
37.6 (955)
17.8 (452)
36.9 (937)
17.8 (452)
37.0 (940)
18.2 (462)
37.6 (955)
18.2 (462)
37.6 (955)
18.2 (462)
37.5 (953)
18.2 (462)
37.6 (955)
78.6 (1996)
66.5 (1689)
73.1 (1857)
61.0 (1549)
HEIGHT,
in. (mm)
H
POWER ENTRY,
SERVICE VALVE
in. (mm)
CONNECTIONS, in. (mm)
P
Suction
Liquid
5/ (16)
15/8 (41)
8
24.9 (632)
5/ (16)
13/8 (35)
8
5/ (16)
15/8 (41)
8
5/ (16)
13/8 (35)
8
36.9 (937)
7/ (22)
15/8 (41)
8
5/ (16)
13/8 (35)
8
5/ (16)
15/8 (41)
8
24.9 (632)
5/ (16)
13/8 (35)
8
5/ (16)
15/8 (41)
8
5/ (16)
13/8 (35)
8
36.9 (937)
7/ (22)
15/8 (41)
8
5/ (16)
13/8 (35)
8
Fig. 5 — 38AP Unit Dimensions, Sizes 025-030
NOTES:
1. Be sure to use a wet rag to remove all valve cores before brazing field piping.
2. Do not cap or otherwise obstruct the liquid line temperature relief.
3. A 7/8 in. (22.4 mm) diameter hole is provided for locating field power wiring. Actual hole size
required depends on field wire sizing.
4. A 0.437 in. (11.1 mm) diameter hole is used for mounting unit.
5. Unit must have clearances as follows:
Top - Do not restrict.
Coil End - 72 in. (1829) from solid surface.
Panel Side - 48 in. (1219) per NEC (National Electrical Code, U.S.A. Standard).
6. Unit height dimension for standard and low sound unit with stack fan option.
7. Installation in a pit is not recommended.
8. Unit can be handled using the fork truck lift pockets.
9. Dimensions shown in inches (mm).
Low Sound
Standard
38APS025
38APD025
38APS027
38APD027
38APS030
38APD030
38APS025
38APD025
38APS027
38APD027
38APS030
38APD030
UNIT
a38-7101
UNIT
Low Sound
Standard
a38-7102
10
38APS040
38APD040
38APS050
38APD050
38APD060
38APS040
38APD040
38APS050
38APD050
38APD060
1968 (893)
2094 (950)
1977 (897)
2120 (961)
2227 (1010)
2022 (917)
2148 (974)
2031 (921)
2174 (986)
2299 (1043)
STANDARD
WEIGHT, lb (kg)
CENTER OF GRAVITY,
in. (mm)
X
Y
35.0 (869)
44.0 (1118)
33.7 (856)
44.1 (1120)
34.9 (886)
44.0 (1118)
33.4 (848)
44.1 (1120)
34.4 (874)
44.1 (1120)
35.0 (869)
44.0 (1118)
33.7 (856)
44.1 (1120)
34.9 (886)
44.0 (1118)
33.4 (848)
44.1 (1120)
34.4 (874)
44.1 (1120)
SERVICE VALVE
CONNECTIONS, in. (mm)
Suction
Liquid
7/ (22)
21/8 (54)
8
5/ (16)
15/8 (41)
8
7/ (22)
21/8 (54)
8
5/ (16)
15/8 (41)
8
5/ (16)
15/8 (41)
8
7/ (22)
21/8 (54)
8
5/ (16)
15/8 (41)
8
7/ (22)
21/8 (54)
8
5/ (16)
15/8 (41)
8
5/ (16)
15/8 (41)
8
NOTES:
1. Be sure to use a wet rag to remove all valve cores before brazing field piping.
2. Do not cap or otherwise obstruct the liquid line temperature relief.
3. A 7/8 in. (22.4 mm) diameter hole is provided for locating field power wiring.
Actual hole size required depends on field wire sizing.
4. A 0.437 in. (11.1 mm) diameter hole is used for mounting unit.
5. Unit must have clearances as follows:
Top - Do not restrict.
Coil End - 72 in. (1829) from solid surface.
Panel Side - 48 in. (1219) per NEC (National Electrical Code, U.S.A. Standard).
6. Unit height dimension for standard and low sound unit with stack fan option.
7. Installation in a pit is not recommended.
8. Unit can be handled using the fork truck lift pockets.
9. Dimensions shown in inches (mm).
10. Sizes 040 and 050 units have 3 condenser fans. Size 060 units have 4 condenser fans.
Fig. 6 — 38AP Unit Dimensions, Sizes 040-060
78.5 (1994)
73.0 (1854)
HEIGHT,
in. (mm)
H
2450 (1111)
2522 (1144)
STANDARD
WEIGHT, lb (kg)
X
50.9 (1293)
50.9 (1293)
Y
40.6 (1031)
40.6 (1031)
CENTER OF GRAVITY,
in. (mm)
H
73.0 (1854)
78.5 (1994)
HEIGHT,
in. (mm)
SERVICE VALVE CONNECTIONS,
in. (mm)
Suction
Liquid
Circuit A
Circuit B
7/ (22)
21/8 (54)
15/8 (41)
8
7/ (22)
21/8 (54)
15/8 (41)
8
Fig. 7 — 38AP Unit Dimensions, Size 070
NOTES:
1. Be sure to use a wet rag to remove all valve cores before brazing field piping.
2. Do not cap or otherwise obstruct the liquid line temperature relief.
3. A 7/8 in. (22.4 mm) diameter hole is provided for locating field power wiring.
Actual hole size required depends on field wire sizing.
4. A 0.437 in. (11.1 mm) diameter hole is used for mounting unit.
5. Unit must have clearances as follows:
Top - Do not restrict.
Coil, Panel and Rear Side - 72 in. (1829) from solid surface.
6. Unit height dimension for standard and low sound unit with stack fan option.
7. Installation in a pit is not recommended.
8. Unit can be handled using crane.
9. Dimensions shown in inches (mm).
38APD070
38APD070
UNIT
Standard
Low Sound
a38-7103
11
2610
2835
2844
2700
2943
2952
(1184)
(1286)
(1290)
(1225)
(1335)
(1339)
STANDARD
WEIGHT, lb (kg)
X
67.6 (1716)
72.4 (1839)
72.6 (1844)
67.6 (1716)
72.4 (1839)
72.6 (1844)
Y
40.2 (1020)
43.3 (1099)
43.3 (1099)
40.2 (1020)
43.3 (1099)
43.3 (1099)
CENTER OF GRAVITY,
in. (mm)
78.5 (1994)
73.0 (1854)
H
HEIGHT,
in. (mm)
SERVICE VALVE CONNECTIONS,
in. (mm)
Suction
Liquid
Circuit A
Circuit B
7/ (22)
15/8 (41)
21/8 (54)
8
7/ (22)
21/8 (54)
8
7/8 (22)
21/8 (54)
7/ (22)
21/8 (54)
15/8 (41)
8
7/ (22)
21/8 (54)
8
7/8 (22)
21/8 (54)
Fig. 8 — 38AP Unit Dimensions, Sizes 080-100
NOTES:
1. Be sure to use a wet rag to remove all valve cores before brazing field piping.
2. Do not cap or otherwise obstruct the liquid line temperature relief.
3. A 7/8 in. (22.4 mm) diameter hole is provided for locating field power wiring.
Actual hole size required depends on field wire sizing.
4. A 0.437 in. (11.1 mm) diameter hole is used for mounting unit.
5. Unit must have clearances as follows:
Top - Do not restrict.
Coil, Panel and Rear Side - 72 in. (1829) from solid surface.
6. Unit height dimension for standard and low sound unit with stack fan option.
7. Installation in a pit is not recommended.
8. Unit can be handled using crane.
9. Dimensions shown in inches (mm).
10. Size 080 units have 5 condenser fans. Sizes 090 and 100 units have 6 condenser fans.
Low Sound
38APD080
38APD090
38APD100
38APD080
38APD090
38APD100
UNIT
Standard
a38-7104
12
OUTDOOR FAN LAYOUT (Single and Dual Circuit)
CONTROL BOX
OFM2
TOP VIEW
SIZES 025-030
TOP VIEW
SIZES 040-050
CONTROL BOX
OFM1
OFM5
CONTROL BOX
CONTROL BOX
OFM2
OFM3
CONTROL BOX
OFM1
OFM1
OFM3
OFM2
OFM6
TOP VIEW
SIZE 080
OFM1
OFM3
OFM2
OFM4
TOP VIEW
SIZES 060-070
OFM1
OFM3
OFM5
OFM2
OFM4
OFM6
TOP VIEW
SIZES 090-100
COMPRESSOR LAYOUT DUAL CIRCUIT
A1
B1
A1
B1
B1
B2
TOP VIEW
SIZES 040-060
TOP VIEW
SIZES 025-030
CONTROL BOX
CONTROL BOX
CONTROL BOX
CONTROL BOX
A2
B2
A2
B3
A1
TOP VIEW
SIZES 070-080
A3
B1
a38-7131
A2
B2
A1
B3
TOP VIEW
SIZES 090-100
COMPRESSOR LAYOUT SINGLE CIRCUIT
CONTROL BOX
CONTROL BOX
A1
A1
A2
TOP VIEW
SIZES 025-030
A2
A3
TOP VIEW
SIZES 040-050
Fig. 9 — Outdoor Fan and Compressor Layout
13
LEGEND
A
— Circuit 1 Compressor
B
— Circuit 2 Compressor
OFM — Outdoor Fan
40RU
a38-7098_gs
LEGEND
LLSV — Liquid Line Solenoid Valve
NEC — National Electrical Code
TXV — Thermostatic Expansion Valve
Piping
Double Riser Piping (if required)
*Field supplied.
†If double suction riser is required for piping
system, size short riser (3 ft maximum)
according to Fig. 12.
**Field supplied. See Table 6 for refrigerant specialties part numbers.
NOTES:
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 electrical
codes.
5. Liquid line solenoid valves (solenoid drop control) are not required but are recommended
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 suction
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.
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
a38-7099_gs
LEGEND
LLSV — Liquid Line Solenoid Valve
NEC — National Electrical Code
TXV — Thermostatic Expansion Valve
Piping
*Field supplied.
†Field supplied. See Table 6 for refrigerant specialties part numbers.
NOTES:
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 electrical codes.
5. Liquid line solenoid valves (solenoid drop control) are not required but are recommended 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 suction 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.
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
Table 6 — Refrigerant Specialties Part Numbers
CIRCUIT A
38APS UNIT SIZE
Tons
LL Size (in.)
LLSV
025
24.0
5/
8
7/
8
027
26.7
5/
8
7/
8
030
31.1
5/
8
7/
8
11/8
040
39.8
5/
8
7/
8
11/8
050
48.1
7/
8
11/8
EF680028
EF680029
EF680028
EF680029
EF680028
EF680029
EF680030
EF680028
EF680029
EF680030
EF680029
EF680030
38APD
UNIT
SIZE
Tons
025
12.0
027
13.3
030
15.6
040
21.0
050
23.8
060
26.8
070
31.8
080
31.3
090
40.3
100
48.0
LL
—
LLSV —
LL Size
(in.)
1/
2
5/
8
1/2
5/
8
1/
2
5/8
7/
8
—
5/8
7/
8
5/
8
7/8
5/
8
7/
8
—
5/
8
7/
8
11/8
5/
8
7/
8
11/8
5/
8
7/
8
11/8
7/
8
11/8
LLSV
EF680031
EF680028
EF680031
EF680028
EF680031
EF680028
EF680029
—
EF680028
EF680029
EF680028
EF680029
EF680028
EF680029
—
EF680028
EF680029
EF680030
EF680028
EF680029
EF680030
EF680028
EF680029
EF680030
EF680029
EF680030
CIRCUIT A
LLSV Coil
24-v, 50/60 Hz
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
—
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
—
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
Sight
Glass
KM680004
KM680005
KM680004
KM680005
KM680004
KM680005
KM680006
—
KM680005
KM680006
KM680005
KM680006
KM680005
KM680006
—
KM680005
KM680006
KM680007
KM680005
KM680006
KM680007
KM680005
KM680006
KM680007
KM680006
KM680007
Filter
LL Size
Tons
Drier
(in.)
1/
KH680001
2
12.0
5/
KH680002
8
1/2
KH680001
13.3
5
KH680002
/8
1/
KH680001
2
5/8
15.6
KH680002
7
KH680003
/8
1/
—
2
5/8
KH680002
18.2
7
KH680003
/8
5/
KH680002
8
26.3
7/8
KH680003
5/
KH680002
8
7/
31.5
KH680003
8
—
11/8
5/
KH680002
8
7/
35.5
KH680003
8
KH680004
11/8
5/
KH680002
8
7/
46.7
KH680003
8
KH680004
11/8
KH680003*
—
7/
47.1
KH680003
8
KH680004
11/8
7/
KH680003
8
48.0
KH680004
11/8
LEGEND
Liquid Line
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.
1/
2
5/
8
7/
8
11/8
LLSV Coil
24-v, 50/60 Hz
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
mm
12.7
15.9
22.2
28.6
16
LLSV
EF680031
EF680028
EF680031
EF680028
EF680031
EF680028
EF680029
EF680028
EF680029
EF680029
EF680028
EF680029
EF680028
EF680029
EF680030
EF680028
EF680029
EF680030
EF680028
EF680029
EF680030
—
EF680029
EF680030
EF680029
EF680030
Sight Glass
Filter Drier
KM680005
KM680006
KM680005
KM680006
KM680005
KM680006
KM680007
KM680005
KM680006
KM680007
KM680006
KM680007
KH680002
KH680003
KH680002
KH680003
KH680002
KH680003
KH680004
KH680003*
KH680003
KH680004
KH680003
KH680004
CIRCUIT B
LLSV Coil
24-v, 50/60 Hz
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
EF680032
—
EF680032
EF680032
EF680032
EF680032
Sight
Glass
KM680004
KM680005
KM680004
KM680005
KM680004
KM680005
KM680006
KM680004
KM680005
KM680006
KM680005
KM680006
KM680005
KM680006
KM680007
KM680005
KM680006
KM680007
KM680005
KM680006
KM680007
—
KM680006
KM680007
KM680006
KM680007
Filter
Drier
KH680001
KH680002
KH680001
KH680002
KH680001
KH680002
KH680003
KH680001
KH680002
KH680003
KH680002
KH680003
KH680002
KH680003
KH680004
KH680002
KH680003
KH680004
KH680003*
KH680003
KH680004
—
KH680003
KH680004
KH680003
KH680004
SIZE REFRIGERANT LINES — Consider the length of piping required between the condensing unit and indoor unit
(evaporator), the amount of liquid lift, and compressor oil return. Suction and liquid lines should be sized in accordance
with Table 7. Double suction risers may be required if condensing 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 additional 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 losses. The units also have the ability to operate at low capacity.
Because of these capabilities, use special care with suction piping 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
A
B
C
D
RED.
STR
—
—
—
—
—
—
LEGEND
Pipe A, Suction Riser, without Trap
Pipe B, Suction Riser with Trap
Suction Line to Condensing Unit
Pipe D, Suction Riser Short Lift
Reducer
Street
38AP
UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
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.
D PIPE DIAMETER
Dual Circuit
Single Circuit
Circuit A
Circuit B
in.
mm
in.
mm
in.
mm
29
1 1 /8
29
1 3 /8
35
1 1 /8
1 1 /8
29
1 1 /8
29
1 3 /8
35
1 1 /8
29
1 1 /8
29
1 3 /8
35
1 3 /8
35
1 1 /8
29
1 5 /8
41
1 3 /8
35
1 3 /8
35
1 5 /8
41
1 3 /8
35
1 5 /8
41
—
—
1 5 /8
41
1 5 /8
41
—
—
1 5 /8
41
1 5 /8
41
—
—
1 5 /8
41
1 5 /8
41
—
—
1 5 /8
41
1 5 /8
41
—
—
Fig. 12 — Double Suction Riser Construction
17
Table 7 — Refrigerant Piping Requirements
38APS025-050 Single-Circuit Units (60 Hz)
38APS
UNIT
SIZE
0-25
(0-7.6)
L
025
027
030
040
050
5/
8
5/
8
5 /8
5/
8
7/
8
S
13/8
13/8
13/8
15/8
15/8
25-50
(7.6-15.2)
L
S
5/
1 5 /8
8
5/
1 5 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7/
2 1 /8
8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
L
S
L
S
L
S
L
S
7/
7/
7/
7/
1 5 /8
1 5 /8
2 1 /8
2 1 /8
8
8
8
8
7/
7/
7/
7/
1 5 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
7 /8
7 /8
7 /8
7 /8
2 1 /8
2 1 /8
2 1 /8
2 1 /8
7/
7/
7/
2 1 /8
2 1 /8
2 1 /8
1 1 /8
2 1 /8
8
8
8
7/
1
1
1
1
5
1
2 /8
1 /8
2 /8
1 /8
2 /8
1 /8
2 5 /8
8
150-175
(45.7-53.3)
L
S
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
1 1 /8
2 5 /8
1
1 /8
2 5 /8
175-200
(53.3-61.0)
L
S
7/
2 1 /8
8
7/
2 1 /8
8
1 1 /8
2 1 /8
1 1 /8
2 5 /8
1
1 /8
2 5 /8
38APD025-100 Dual-Circuit Units (60 Hz)
38APD UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
0-25
(0-7.6)
L
S
1/
1 1 /8
2
1/
1 1 /8
2
1 /2
1 1 /8
1/
1 1 /8
2
1/
1 1 /8
2
1 /2
1 1 /8
5/
1 3 /8
8
1 /2
1 1 /8
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 3 /8
5/
1 3 /8
8
5/
1 5 /8
8
5 /8
1 5 /8
5/
1 3 /8
8
7/
1 5 /8
8
5 /8
1 5 /8
7/
1 5 /8
8
7/
1 5 /8
8
7 /8
1 5 /8
25-50
(7.6-15.2)
L
S
1/
1 1 /8
2
1/
1 1 /8
2
1/2
1 1 /8
1/
1 1 /8
2
5/
1 3 /8
8
5/8
1 3 /8
5/
1 3 /8
8
5/8
1 3 /8
5/
1 5 /8
8
5/
1 5 /8
8
5/8
1 5 /8
7/
1 5 /8
8
7/
1 5 /8
8
7/8
2 1 /8
7/
1 5 /8
8
7/
2 1 /8
8
7/8
2 1 /8
7/
2 1 /8
8
7/
2 1 /8
8
7/8
2 1 /8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
L
S
L
S
L
S
L
S
5/
5/
5/
5/
1 3 /8
1 3 /8
1 3 /8
1 3 /8
8
8
8
8
5/
5/
5/
5/
1 3 /8
1 3 /8
1 3 /8
1 3 /8
8
8
8
8
5 /8
5/8
5 /8
5 /8
1 3 /8
1 3 /8
1 3 /8
1 3 /8
5/
5/
5/
5/
1 3 /8
1 3 /8
1 3 /8
1 3 /8
8
8
8
8
5/
5/
5/
5/
1 3 /8
1 3 /8
1 5 /8
1 5 /8
8
8
8
8
3
3
5
5 /8
5
5
5
1 /8
/8
1 /8
/8
1 /8
/8
1 5 /8
5/
7/
7/
7/
5/
5/
5/
1
1
1
2 1 /8
8
8
8
8
8
8
8
5 /8
5/8
7 /8
7 /8
1 5 /8
1 5 /8
1 5 /8
1 5 /8
7/
7/
7/
7/
1 5 /8
1 5 /8
2 1 /8
2 1 /8
8
8
8
8
7/
7
7
7
5
1
1
1 /8
/8
2 /8
/8
2 /8
/8
2 1 /8
8
7 /8
7/8
7 /8
7 /8
1 5 /8
2 1 /8
2 1 /8
2 1 /8
7/
7/
7/
7/
2 1 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
7/
7/
7/
7/
2 1 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
1
1
1
7 /8
7
7
7
2 /8
/8
2 /8
/8
2 /8
/8
2 1 /8
7/
7/
7/
7/
1/
1/
1/
2
2
2
2 1 /8
8
8
8
8
8
8
8
7/
7/
2 1 /8
2 1 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
8
8
7 /8
7/8
7 /8
2 1 /8
2 1 /8
2 1 /8
1 1 /8
2 1 /8
7/
1
1
1
1
5
1
2 /8
1 /8
2 /8
1 /8
2 /8
1 /8
2 5 /8
8
7/
1/
1/
1/
1/
5/
1/
2
1
2
1
2
1
2 5 /8
8
8
8
8
8
8
8
7 /8
2 1 /8
1 1 /8
2 1 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
150-175
(45.7-53.3)
L
S
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 5 /8
5/
1 5 /8
8
7/
1 5 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
1 1 /8
2 1 /8
1 1 /8
2 1 /8
1
1 /8
2 1 /8
1 1 /8
2 1 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
1
1 /8
2 5 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
175-200
(53.3-61.0)
L
S
5/
1 5 /8
8
5/
1 5 /8
8
5 /8
1 5 /8
5/
1 5 /8
8
7/
1 5 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
1 1 /8
2 1 /8
1 1 /8
2 1 /8
1
1 /8
2 5 /8
1 1 /8
2 1 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
1
1 /8
2 5 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
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
L — Liquid Line
S — Suction Line
NOTES:
1. Shading indicates double suction riser required on units if condensing unit is located higher than evaporator.
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. Example: Equivalent length = Maximum
linear length x 1.5.
in.
1 /2
5/
8
7/
8
1 1 /8
1 3 /8
1 5 /8
2 1 /8
2 5 /8
18
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
Table 7 — Refrigerant Piping Requirements (cont)
38APS025-050 Single-Circuit Units (50 Hz)
38APS
UNIT
SIZE
0-25
(0-7.6)
L
025
027
030
040
050
5/
8
5/
8
5 /8
5/
8
5/
8
S
11/8
13/8
13/8
13/8
15/8
25-50
(7.6-15.2)
L
S
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 5 /8
7/
1 5 /8
8
7/
2 1 /8
8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
L
S
L
S
L
S
L
S
5/
5/
7/
7/
1 5 /8
1 5 /8
1 5 /8
2 1 /8
8
8
8
8
5/
7/
7/
7/
1 5 /8
1 5 /8
1 5 /8
2 1 /8
8
8
8
8
7 /8
7 /8
7 /8
7 /8
1 5 /8
1 5 /8
2 1 /8
2 1 /8
7/
7/
7/
7/
2 1 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
7/
7
7
1
1
1
1
2 /8
/8
2 /8
/8
2 /8
1 /8
2 1 /8
8
150-175
(45.7-53.3)
L
S
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
1
1 /8
2 5 /8
175-200
(53.3-61.0)
L
S
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
1
1 /8
2 5 /8
38APD025-100 Dual-Circuit Units (50 Hz)
38APD UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
0-25
(0-7.6)
L
S
1/
1 1 /8
2
1/
1 1 /8
2
1 /2
1 1 /8
1/
1 1 /8
2
1/
1 1 /8
2
1 /2
1 1 /8
1/
1 1 /8
2
1 /2
1 1 /8
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 3 /8
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 3 /8
5/
1 3 /8
8
5/
1 5 /8
8
5 /8
1 3 /8
5/
1 5 /8
8
5/
1 5 /8
8
5 /8
1 5 /8
25-50
(7.6-15.2)
L
S
1/
1 1 /8
2
1/
1 1 /8
2
1/2
1 1 /8
1/
1 1 /8
2
1/
1 1 /8
2
1/2
1 1 /8
5/
1 3 /8
8
5/8
1 3 /8
5/
1 3 /8
8
5/
1 3 /8
8
5/8
1 3 /8
5/
1 5 /8
8
5/
1 5 /8
8
7/8
1 5 /8
5/
1 5 /8
8
7/
2 1 /8
8
7/8
1 5 /8
7/
2 1 /8
8
7/
2 1 /8
8
7/8
2 1 /8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
L
S
L
S
L
S
L
S
1/
5/
5/
5/
1 1 /8
1 3 /8
1 3 /8
1 3 /8
2
8
8
8
1/
5/
5/
5/
1 1 /8
1 3 /8
1 3 /8
1 3 /8
2
8
8
8
1 /2
5 /8
5 /8
5 /8
1 1 /8
1 3 /8
1 3 /8
1 3 /8
1/
5/
5/
5/
1 1 /8
1 3 /8
1 3 /8
1 3 /8
2
8
8
8
5/
5/
5/
5/
1 3 /8
1 3 /8
1 3 /8
1 3 /8
8
8
8
8
3
3
3
5 /8
5
5
5
1 /8
/8
1 /8
/8
1 /8
/8
1 3 /8
5/
5/
5/
5/
3/
5/
5/
1
1
1
1 5 /8
8
8
8
8
8
8
8
5 /8
5 /8
5 /8
5 /8
1 3 /8
1 3 /8
1 5 /8
1 5 /8
5/
5/
7/
7/
1 5 /8
1 5 /8
1 5 /8
2 1 /8
8
8
8
8
5/
7
7
7
5
5
5
1 /8
/8
1 /8
/8
1 /8
/8
2 1 /8
8
5 /8
7 /8
7 /8
7 /8
1 5 /8
1 5 /8
1 5 /8
2 1 /8
7/
7/
7/
7/
1 5 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
7/
7/
7/
7/
1 5 /8
2 1 /8
2 1 /8
2 1 /8
8
8
8
8
1
1
1
7 /8
7
7
7
2 /8
/8
2 /8
/8
2 /8
/8
2 1 /8
7/
7/
7/
7/
5/
1/
1/
1
2
2
2 1 /8
8
8
8
8
8
8
8
7/
7/
7/
2 1 /8
2 1 /8
2 1 /8
1 1 /8
2 1 /8
8
8
8
7 /8
7 /8
7 /8
7 /8
2 1 /8
2 1 /8
2 1 /8
2 1 /8
7/
7
7
1
1
1
1
2 /8
/8
2 /8
/8
2 /8
1 /8
2 1 /8
8
7/
7/
7/
1/
1/
1/
1/
2
2
2
1
2 1 /8
8
8
8
8
8
8
8
7 /8
7 /8
7 /8
2 1 /8
2 1 /8
2 1 /8
1 1 /8
2 1 /8
150-175
(45.7-53.3)
L
S
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 3 /8
5/
1 3 /8
8
5/
1 5 /8
8
5 /8
1 5 /8
7/
1 5 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
1 1 /8
2 5 /8
1 1 /8
2 1 /8
1
1 /8
2 5 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
175-200
(53.3-61.0)
L
S
5/
1 3 /8
8
5/
1 3 /8
8
5 /8
1 3 /8
5/
1 3 /8
8
5/
1 5 /8
8
5 /8
1 5 /8
7/
2 1 /8
8
7 /8
1 5 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
7/
2 1 /8
8
7 /8
2 1 /8
7/
2 1 /8
8
1 1 /8
2 5 /8
1 1 /8
2 1 /8
1
1 /8
2 5 /8
1 1 /8
2 5 /8
1 1 /8
2 5 /8
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
L — Liquid Line
S — Suction Line
NOTES:
1. Shading indicates double suction riser required on units if condensing unit is located higher than evaporator.
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. Example: Equivalent length = Maximum
linear length x 1.5.
in.
1 /2
5/
8
7/
8
1 1 /8
1 3 /8
1 5 /8
2 1 /8
2 5 /8
19
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
Table 7 — Refrigerant Piping Requirements (cont)
38APS025-50 Single-Circuit Units Double Suction Riser (60 Hz)
38APS
UNIT
SIZE
A
—
—
—
—
—
025
027
030
040
050
0-25
(0-7.6)
B
—
—
—
—
—
C
—
—
—
—
—
25-50
(7.6-15.2)
A
B
C
—
—
—
—
—
—
—
—
—
13/8 15/8 21/8
13/8 15/8 21/8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
A
B
C
A
B
C
A
B
C
A
B
C
—
—
—
—
—
—
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
150-175
(45.7-53.3)
A
B
C
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
175-200
(53.3-61.0)
A
B
C
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
150-175
(45.7-53.3)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
15/8 21/8 25/8
15/8 21/8 25/8
15/8 21/8 25/8
175-200
(53.3-61.0)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
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
15/8 21/8 25/8
38APD025-100 Dual-Circuit Units Double Suction Riser (60 Hz)
38APD UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
—
Pipe A
Pipe B
Pipe C
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
—
—
—
—
A
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0-25
(0-7.6)
B
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
25-50
(7.6-15.2)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
A
B
C
A
B
C
A
B
C
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
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 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 15/8 21/8 25/8 15/8 21/8 25/8
13/8 15/8 21/8 13/8 15/8 21/8 15/8 21/8 25/8 15/8 21/8 25/8
LEGEND
Not Required
Suction Riser without Trap
Suction Riser with Trap
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:
in.
1/
2
5/
8
7/
8
11/8
13/8
15/8
21/8
25/8
LEGEND
— Suction Riser
without Trap
Suction Riser
— with Trap
Line to
— Suction
Condensing Unit
— Pipe Diameter to be
as Listed in Fig. 12.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
SUCTION LINE PIPING
20
Table 7 — Refrigerant Piping Requirements (cont)
38APS025-50 Single-Circuit Units Double Suction Riser (50 Hz)
38APS
UNIT
SIZE
A
—
—
—
—
—
025
027
030
040
050
0-25
(0-7.6)
B
—
—
—
—
—
C
—
—
—
—
—
25-50
(7.6-15.2)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
13/8 15/8 21/8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
A
B
C
A
B
C
A
B
C
A
B
C
—
—
—
—
—
—
—
—
—
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
150-175
(45.7-53.3)
A
B
C
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
175-200
(53.3-61.0)
A
B
C
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
150-175
(45.7-53.3)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
13/8 15/8 21/8
15/8 21/8 25/8
15/8 21/8 25/8
15/8 21/8 25/8
175-200
(53.3-61.0)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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
13/8 15/8 21/8
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 (50 Hz)
38APD UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
—
Pipe A
Pipe B
Pipe C
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
Ckt A
Ckt B
—
—
—
—
A
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0-25
(0-7.6)
B
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
25-50
(7.6-15.2)
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
13/8 15/8 21/8
—
—
—
13/8 15/8 21/8
13/8 15/8 21/8
13/8 15/8 21/8
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE, ft (m)
50-75
75-100
100-125
125-150
(15.2-22.9)
(22.9-30.5)
(30.5-38.1)
(38.1-45.7)
A
B
C
A
B
C
A
B
C
A
B
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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 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
LEGEND
Not Required
Suction Riser without Trap
Suction Riser with Trap
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:
in.
1/
2
5/
8
7/
8
11/8
13/8
15/8
21/8
25/8
LEGEND
— Suction Riser
without Trap
Suction Riser
— with Trap
Line to
— Suction
Condensing Unit
— Pipe Diameter to be
as Listed in Fig. 12.
mm
12.7
15.9
22.2
28.6
34.9
41.3
54.0
66.7
SUCTION LINE PIPING
21
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
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.
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 evaporator 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 possible. 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 fieldsupplied 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 suction lines at the condenser. Refer to Table 6.
CAUTION
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 pumpdown 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 nitrogen or R-410A and an electronic leak detector.
Purge nitrogen or recover R-410A from system after completion of leak-checking procedure. Repair leak if one is found.
When finished, evacuate and dehydrate system using the following 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 obtained. 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 dehydration process. Maintain a vacuum on the system until the
standing vacuum requirement is met. This will ensure a dry
system.
By following these evacuation and dehydration procedures,
the amount of moisture present in the system will be minimized. It is required that liquid line filter driers be installed between the condenser(s) and the expansion devices to capture
any foreign debris and provide additional moisture removal capacity. Be sure to consider the pressure drop of the filter drier
when determining piping requirements.
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 evaporator 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 condensing 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 evaporator 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.
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
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
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
Table 8 — Requirements for Installation of Liquid Line Solenoid Valve
38AP UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
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
Single Circuit
Circuit A
Circuit B
Circuit A
Circuit B
Circuit A
Circuit B
Circuit A
Circuit B
Circuit A
Circuit B
4-Row, 1/2 in. Tube
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
MAXIMUM ALLOWABLE EVAPORATOR SURFACE AREA
WITHOUT LIQUID LINE SOLENOID VALVE (sq ft)
6-Row, 1/2 in. Tube 8-Row, 1/2 in. Tube 3-Row, 3/8 in. Tube
12.7
9.5
36.1
12.7
9.5
36.1
25.3
18.9
72.3
14.5
10.9
41.4
17.1
12.8
48.9
31.6
23.7
90.3
14.5
10.9
41.4
17.1
12.8
48.9
31.6
23.7
90.3
31.6
23.7
—
31.6
23.7
—
63.3
47.3
—
31.6
23.7
—
31.6
23.7
—
63.3
47.3
—
31.6
23.7
—
31.6
23.7
—
46.6
34.9
—
46.6
34.9
—
46.6
34.9
—
69.9
52.3
—
69.9
52.3
—
69.9
52.3
—
69.9
52.3
—
69.9
52.3
—
a38-7119
NOTE: Locate long line kit as close to the
condensing unit as possible.
Fig. 17 — Long Line Option Kit Installation
25
4-Row, 3/8 in. Tube
28.1
28.1
56.3
32.3
38.1
70.4
32.3
38.1
70.4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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 terminal 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 temperature sensor) and SAT (supply air temperature sensor) layout.
Figures 20-24 show specific field wiring, depending on unit
configuration and desired control requirements.
Constat Volume Application Control Options
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 thermostat 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).
a. Space Temperature Sensor with Occupancy Override Button (Part No. 33ZCT55SPT)
b. Space Temperature Sensor with Occupancy Override Button and Set Point Adjustment Slidebar
(Part No. 33ZCT56SPT)
c. Space Temperature Sensor with Occupancy Override Button, Set Point Adjustment Slidebar, and
LCD (liquid crystal display) Display (Part No.
33ZCT59SPT)
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.
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.
IMPORTANT: Operating unit on improper supply
voltage or with excessive phase imbalance constitutes
abuse and may adversely affect Carrier warranty.
CAUTION
Proper rotation of condenser fan(s) MUST be verified
before compressors are started. Consult the Controls, StartUp and Operation guide provided with the 38AP units for
correct procedure. Failure to comply could result in possible equipment damage.
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. Disconnect 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 prolonged period.
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. Refer 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
a38-7122
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.
4. Refer to certified dimensional drawings for exact locations of the main power
and control power entrance locations.
LEGEND
EQUIP GND — Equipment Ground
NEC
— National Electrical Code
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.
Fig. 18 — Field Power Wiring
a38-7133
RETURN
AIR
EAT
FS1*
SAT
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
LVT
TERMINAL
STRIP
*
6
a38-7125
*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
†
*
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
LVT
TERMINAL
STRIP
a38-7129
Fig. 24 — Optional Energy Management Module Wiring
Legend and Notes for Fig. 20-24
ALM R
—
COM
—
COOL1
—
COOL2
—
EAT
—
EMM
—
EQUIP GND —
FS1
—
LLSV
—
LVT
—
NEC
—
SA
—
SAT
—
SPT
—
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.
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.
4. Terminals 1 and 2 of the LVT are for the alarm relay. The maximum 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 handling a 24-vac load up to 50 mA.
LEGEND
Alarm Relay (24-v), 5-va Maximum
Communication
Thermostat Stage 1 (24-v)
Thermostat Stage 2 (24-v)
Evaporator Air Temperature Sensor
Energy Management Module
Equipment Ground
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
Field Control Wiring
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 factorysupplied disconnect.
30
Table 9 — 38APS Standard Condenser Fan Electrical Data
38APS UNIT
SIZE
V-Ph-Hz
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
025
027
030
040
050
SUPPLY
VOLTAGE
Min
Max
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
COMPRESSOR
Qty
2
2
2
3
3
RLA
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
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
CONDENSER FAN
LRA
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
Total Qty
2
2
2
3
3
FLA
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
MCA
MOCP
REC
FUSE
ICF
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
186.5
99.1
85.0
72.5
85.0
201.2
122.2
97.3
84.8
97.3
150
80
60
50
60
175
90
80
60
80
175
110
90
80
90
225
125
100
90
100
250
150
110
100
110
150
70
60
45
60
150
80
70
60
70
175
100
80
70
80
200
110
100
80
100
225
150
110
100
110
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
422.4
204.5
206.1
156.6
196.1
471.4
275.7
242.7
187.2
237.7
MCA
MOCP
REC
FUSE
ICF
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
184.7
99.1
83.8
71.9
83.8
199.4
122.2
96.1
84.2
96.1
150
80
60
50
60
175
90
80
60
80
175
110
90
80
90
225
125
100
90
100
250
150
110
100
110
150
70
60
45
60
150
80
70
60
70
175
100
80
70
80
200
110
100
80
100
225
150
110
100
110
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
420.6
204.5
204.9
156.0
194.9
469.6
275.7
241.5
186.6
236.5
Table 10 — 38APS Low Sound Condenser Fan Electrical Data
38APS UNIT
SIZE
025
027
030
040
050
FLA
ICF
LRA
MCA
MOCP
RLA
—
—
—
—
—
—
V-Ph-Hz
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
SUPPLY
VOLTAGE
Min
Max
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
187
254
342
418
414
506
518
632
342
440
COMPRESSOR
Qty
2
2
2
3
3
RLA
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
51.3
26.9
23.1
19.9
23.1
55.8
34.0
26.9
23.7
26.9
CONDENSER FAN
LRA
245
145
125
100
118
300
139
150
109
140
340
196
179
132
174
300
139
150
109
140
340
196
179
132
174
Total Qty
2
2
2
3
3
FLA
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
4. Wiring for main field supply must be rated 75 C. Use copper conductors
only.
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.
LEGEND
Full Load Amps
Maximum Instantaneous Current Flow
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
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
Table 11 — 38APD Standard Condenser Fan Electrical Data
38APD
UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
FLA —
ICF —
LRA —
MCA —
MOCP—
RLA —
V-Ph-Hz
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
SUPPLY
VOLTAGE
Min
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
Max
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
254
418
506
632
440
254
418
506
632
440
COMPRESSOR
CIRCUIT A
CIRCUIT B
Qty RLA LRA Qty RLA LRA
48.1
245
48.1
245
23.7
145
23.7
145
1
18.6
125
1
18.6
125
14.7
100
14.7
100
18.6
118
18.6
118
51.3
300
51.3
300
26.9
139
26.9
139
1
23.1
150
1
23.1
150
19.9
109
19.9
109
23.1
140
23.1
140
55.8
340
55.8
340
34.0
196
34.0
196
1
1
26.9
179
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
35.8
239
33.4
225
23.7
145
19.2
140
2
17.9
125
2
16.7
114
14.3
80
13.4
80
17.9
118
16.7
111
51.3
300
51.3
300
26.9
139
26.9
139
2
23.1
150
2
23.1
150
19.9
109
19.9
109
23.1
140
23.1
140
51.3
300
55.8
340
26.9
139
34.0
196
2
23.1
150
2
26.9
179
19.9
109
23.7
132
23.1
140
26.9
174
55.8
340
46.1
245
34.0
196
23.7
145
2
26.9
179
3
18.6
125
23.7
132
14.7
100
26.9
174
18.6
118
55.8
340
55.8
340
34.0
196
34.0
196
2
26.9
179
3
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
51.3
300
55.8
340
26.9
139
34.0
196
3
23.1
150
3
26.9
179
19.9
109
23.7
132
23.1
140
26.9
174
55.8
340
55.8
340
34.0
196
34.0
196
3
26.9
179
3
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
LEGEND
Full Load Amps
Maximum Instantaneous Current Flow
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
Rated Load Amps
CONDENSER FAN
Total
FLA
Qty
2
2
2
3
3
4
4
5
6
6
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
MCA
MOCP
REC
FUSE
ICF
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
388.4
235.9
187.9
163.7
187.9
150
80
60
50
60
175
90
80
60
80
175
110
90
80
90
200
125
100
80
100
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
150
70
60
45
60
150
80
70
60
70
175
100
80
70
80
175
110
90
70
90
250
125
110
90
110
300
175
125
110
125
300
175
150
125
150
350
225
175
150
175
400
225
200
150
200
400
250
200
175
200
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
645.1
368.1
321.9
254.7
311.9
658.6
389.4
333.3
266.1
328.3
4. Wiring for main field supply must be rated 75 C. Use copper
conductors only.
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.
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.
32
Table 12 — 38APD Low Sound Condenser Fan Electrical Data
38APD
UNIT
SIZE
025
027
030
040
050
060
070
080
090
100
FLA —
ICF —
LRA —
MCA —
MOCP—
RLA —
V-Ph-Hz
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
208/230-3-60
380-3-60
460-3-60
575-3-60
380/415-3-50
SUPPLY
VOLTAGE
Min
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
187
342
414
518
342
Max
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
254
418
506
632
440
254
418
506
632
440
COMPRESSOR
CIRCUIT A
CIRCUIT B
Qty RLA LRA Qty RLA LRA
48.1
245
48.1
245
23.7
145
23.7
145
1
18.6
125
1
18.6
125
14.7
100
14.7
100
18.6
118
18.6
118
51.3
300
51.3
300
26.9
139
26.9
139
1
23.1
150
1
23.1
150
19.9
109
19.9
109
23.1
140
23.1
140
55.8
340
55.8
340
34.0
196
34.0
196
1
26.9
179
1
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
35.8
239
33.4
225
23.7
145
19.2
140
2
17.9
125
2
16.7
114
14.3
80
13.4
80
17.9
118
16.7
111
48.1
245
51.3
300
23.7
145
26.9
139
2
18.6
125
2
23.1
150
14.7
100
19.9
109
18.6
118
23.1
140
51.3
300
55.8
340
26.9
139
34.0
196
2
23.1
150
2
26.9
179
19.9
109
23.7
132
23.1
140
26.9
174
55.8
340
46.1
245
34.0
196
23.7
145
2
26.9
179
3
18.6
125
23.7
132
14.7
100
26.9
174
18.6
118
55.8
340
55.8
340
34.0
196
34.0
196
2
26.9
179
3
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
51.3
300
55.8
340
26.9
139
34.0
196
3
23.1
150
3
26.9
179
19.9
109
23.7
132
23.1
140
26.9
174
55.8
340
55.8
340
34.0
196
34.0
196
3
26.9
179
3
26.9
179
23.7
132
23.7
132
26.9
174
26.9
174
LEGEND
Full Load Amps
Maximum Instantaneous Current Flow
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
Rated Load Amps
CONDENSER FAN
Total
FLA
Qty
2
2
2
3
3
4
4
5
6
6
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
MCA
MOCP
REC
FUSE
ICF
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
384.8
235.9
185.5
162.5
185.5
150
80
60
50
60
175
90
80
60
80
175
110
90
80
90
200
125
100
80
100
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
150
70
60
45
60
150
80
70
60
70
175
100
80
70
80
175
110
90
70
90
250
125
110
90
110
300
175
125
110
125
300
175
150
125
150
350
225
175
150
175
400
225
200
150
200
400
250
200
175
200
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
641.5
368.1
319.5
253.5
309.5
655.0
389.4
330.9
264.9
325.9
4. Wiring for main field supply must be rated 75 C. Use copper
conductors only.
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.
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.
33
Table 13 — Unit Incoming Power Options
UNIT INCOMING POWER OPTION
Standard Terminal
Block Option
Max
Min
Wire Size
Wire Size
2/0
#14 AWG
MOCP VALUE
100 A or less
Greater than
100 A and Less than
or Equal to 200 A
Greater than 200
AWG
kcmil
MOCP
SCCR
—
—
—
—
High SCCR Terminal Block Option
Max
Wire Size
2/0
Min
Wire Size
#6 AWG
High SCCR
Fuse Type
J, RK1, or RK5
2/0
#14 AWG
2/0
#6 AWG
J or RK1
350 kcmil
#6 AWG
600 kcmil
#2
600 kcmil
3/0
J or RK1
500 kcmil (1)
500 kcmil (2)
3/0
LEGEND
American Wire Gage
Thousand Circular Mills
Maximum Overcurrent Protection
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 management module, Navigator™ display, remote enhanced display,
Touch Pilot™ display, BACnet™ translator control, LON (local operating network) translator control, and long line accessory 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
38APS
UNIT SIZE
025-050
MINIMUM LOW
AMBIENT
(Standard Unit)
45 F (7.2 C)
MINIMUM LOW AMBIENT
MOTORMASTER® CONTROL
(Factory-Installed Option)
–20 F ( –28.9 C)
Dual Circuit
38APD
UNIT SIZE
025-040
050-060
070-100
MINIMUM LOW
AMBIENT
(Standard Unit)
32 F (0 C)
25 F ( –3.9 C)
32 F (0 C)
Standard and High SCCR
Disconnect Option
Min
Max Wire Size
Wire Size
1/0
#14 AWG
MINIMUM LOW AMBIENT
MOTORMASTER CONTROL
(Factory-Installed Option)
–20 F ( –28.9 C)
–20 F ( –28.9 C)
–20 F( –28.9 C)
34
35
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