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Table 1 — Physical Data — 575B072, 575C090,120 and 541A180 Units
*Unit is factory supplied with holding charge only.
†Typical operating charge with 25 ft of interconnecting pipe.
**Storage capacity of condenser coil with 80% full of liquid at 95 F.
††Equipped with an electric solenoid unloader, capacity steps are 100% and 67%.
UNIT 575B072 575C090 575C120 541A180
NOMINAL CAPACITY (tons) 6 7.5 10 15
OPERATING WEIGHTS (lb)
Aluminum-Fin Coils (standard) 345 464 506 803
Copper-Fin Coils (optional) N/A 565 607 945
REFRIGERANT* R-22
Operating Charge, Typical (lb)† 20 20 22 37
Shipping Charge (lb) 19 9 3
COMPRESSOR Scroll Semi-hermetic reciprocating
Qty...Model 1...SR_75 1...ZR_94 1...ZR125 1...06DF537††
Oil Charge (oz) 88 90 110 128
No. Cylinders N/A 6
Speed (rpm) 3500 1750
OUTDOOR FANS
Qty...Rpm 1…1100 2…1100 2…1075
Diameter (in.) 26 22 26
Nominal Hp
3
/
4
1
/
4
1
/
2
Nominal Airflow (cfm total) 6300 6500 11,000
Watts (total) 750 570 1460
OUTDOOR COILS (Qty) 12 1
Face Area (sq ft total) 24 29.2 29.2
Rows...Fins/in. 2…18 2…17 3…15
Storage Capacity (lb)** 17.3 34.2 40.1
CONTROLS
Pressurestat Settings (psig)
High Pressure
Open 420 428 ± 10 395 ± 20
Close 300 320 ± 20 295 ± 20
Low Pressure
Open 5 7 ± 3 7 ± 3
Close 20 22 ± 5 22 ± 5
PIPING CONNECTIONS (in. ODM)
Vapor 1
1
/
8
1
1
/
8
1
3
/
8
1
5
/
8
Liquid
5
/
8
1
/
2
1
/
2
5
/
8