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Table 1 — 38AP025-050 Unit Physical Data — English
LEGEND
*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.
38AP UNIT SIZE 025 027 030 040 050
NOMINAL CAPACITY, 50/60Hz (tons) 21/25 23/27 25/30 33/40 42/50
CIRCUIT Dual Single Dual Single Dual Single Dual Single Dual Single
OPERATING WEIGHTS (lb)
Standard 1095 1077 1258 1240 1264 1246 2094 1968 2120 1977
With Low Sound Option 1131 1113 1294 1276 1300 1282 2148 2022 2174 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 2222224343
Digital Option 22 22 22 22 22 22 44 33 44 33
CRANKCASE HEATER (W) (each compressor) 90
CONDENSER FANS
Standard Propeller Type - Direct Drive
Quantity 2222223333
RPM 1140 (60 Hz), 950 (50 Hz)
Diameter (in.) 30
Total Watts (60 Hz) 3300 3300 3300 3300 3300 3300 4200 4200 4200 4200
Total Watts (50 Hz) 2750 2750 2750 2750 2750 2750 3500 3500 3500 3500
Low Noise
Shrouded Axial Fan - Direct Drive
Quantity 2222223333
RPM
850 (60 Hz), 700 (50 Hz)
Diameter (in.) 30
Total Watts (60 Hz) 2750 2750 2750 2750 2750 2750 3500 3500 3500 3500
Total Watts (50 Hz) 2300 2300 2300 2300 2300 2300 2900 2900 2900 2900
CONDENSER COIL MCHX Type
No. Coils per Circuit 11
sq ft 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 1
3
/
8
/ 1
3
/
8
1
5
/
8
1
3
/
8
/ 1
3
/
8
1
5
/
8
1
3
/
8
/ 1
3
/
8
1
5
/
8
1
5
/
8
/ 1
5
/
8
2
1
/
8
1
5
/
8
/ 1
5
/
8
2
1
/
8
Liquid Line
5
/
8
/
5
/
8
5
/
8
5
/
8
/
5
/
8
5
/
8
5
/
8
/
5
/
8
7
/
8
5
/
8
/
5
/
8
7
/
8
5
/
8
/
5
/
8
7
/
8
MAXIMUM HEIGHT FOR 3° F SUBCOOLING
(ft)†
75 75 75 75 75 75 75 75 75 75
CAPACITY PER CIRCUIT (%) (CKT A/CKT B) 50/50 100 50/50 100 50/50 100 54/46 100 48/52 100
MINIMUM UNIT CAPACITY (%) 50 50 50 50 50 50 23 33 23 33
MCHX — Microchannel Heat Exchanger
ODF — Outside Diameter, Female