Westinghouse WHP09SZA21S, Service Manual, Page: 7 / 53

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Type Inverter heat pump
Model name WHP18SZA21S WHP24SZA21S
Power supply 208/230 V ~ 60 Hz
Available voltage range 198—253 V
Fan
Airflow rate
CFM (m
3
/h)
1,648
(2,800)
2,354
(4,000)
Type × Q'ty Propeller fan × 1
Motor output W 60 70
Sound pressure level *
1 dB (A) 55 58
Heat exchanger type
Dimensions
(H × W × D)
in (mm)
35-1/4 × 24-13/16 × 11/16
(895 × 630 × 18.19)
34-1/8 × 24-13/16 × 11/16
(867 × 630 × 18.19)
35-1/4 × 24-13/16 × 11/16
(895 × 630 × 18.19)
34-1/8 × 24-13/16 × 11/16
(867 × 630 × 18.19)
19-11/16 × 24-13/16 × 11/16
(500 × 630 × 18.19)
Fin pitch FPI 18
Rows × Stages 2 × 30 3 × 30
Pipe type Copper
Fin type
Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type Rotary
Refrigerant
Type R410A
Charge
lb oz 3 lb 7 oz 4 lb 12 oz
g 1,550 2,150
Refrigerant oil Type VG74 (POE)
Enclosure
Material Steel sheet
Color White
Dimensions
(H × W × D)
Net
in (mm)
25-9/16 × 33-7/8 × 12-3/16
(650 × 860 × 310)
31-5/16 × 34-13/16 × 14-7/16
(795 × 885 × 366)
Gross
28-3/8 × 39-3/16 × 16-9/16
(720 × 995 × 420)
35-1/16 × 41-5/16 × 19-11/16
(890 × 1,050 × 500)
Weight
Net
lb (kg)
99 (45) 134 (61)
Gross 108 (49) 144 (65.5)
Connection pipe
Size
Liquid
in (mm)
Ø 1/4 (Ø 6.35) Ø 3/8 (Ø 9.52)
Gas Ø 1/2 (Ø 12.7) Ø 5/8 (Ø 15.88)
Method Flare
Pre-charge length
ft (m)
24 (7.5)
Max. length 65 (20)
Max. height difference
Indoor unit higher than outdoor unit: 32 (10)
Outdoor unit higher than indoor unit: 16 (5)
Operation range
Cooling
°F (°C)
5 to 115 (-15 to 46)
Heating -4 to 75 (-20 to 24)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) / 67 °FWB (19.44 °CWB), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °FWB (23.9 °CWB).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) / 59 °FWB (15 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB) / 43 °FWB (6.11 °CWB).
– Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Sound pressure level
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.