Westinghouse WHU09DHA21S, Service Manual, Page: 4 / 97

Specifications
Type
Duct
Inverter heat pump
Model name WHU09DHA21S WHU12DHA21S WHU18DHA21S WHU24DHA21S
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 198—253 V 176—253 V
Capacity
Cooling
Rated
kW 2.64 3.52 5.28 7.03
Btu/h 9,000 12,000 18,000 24,000
Min.—Max.
kW 1.42—3.40 1.70—3.84 1.23—6.16 2.49—7.91
Btu/h 4,850—11,600 5,800—13,100 4,200—21,000 8,500—27,000
Heating
Rated
kW 3.22 3.52 5.28 8.21
Btu/h 11,000 12,000 18,000 28,000
Min.—Max.
kW 1.27—3.60 1.29—4.22 1.64—7.03 2.23—8.32
Btu/h 4,500—10,000 4,400—14,400 5,600—24,000 7,600—28,400
Input power
Cooling
Rated
kW
0.750 1.091 1.670 2.290
Min.—Max. 0.390—0.994 0.375—1.280 0.278—1.980 0.730—2.170
Heating
Rated 0.908 1.091 1.600 2.275
Min.—Max. 0.229—1.043 0.457—1.611 0.381—2.320 0.749—2.304
Current
Cooling
Rated A
3.7 4.8 7.6 10.3
Heating 3.9 4.8 7.3 8.7
EER Cooling
W/W 3.52 3.22 3.16 3.07
Btu/hW 12.00 11.00 10.78 10.48
COP Heating
W/W 3.55 3.22 3.30 3.61
Btu/hW 12.11 11.00 11.25 12.31
SEER Cooling Btu/hW 20.0 19.5 19.5 18.0
HSPF Heating Btu/hW 10.0 10.0 10.0 11.0
Power factor
Cooling
%
99
Heating 99
Moisture removal pints/h (L/h) 1.7 (0.8) 2.3 (1.1) 3.2 (1.5) 4.0 (1.9)
Maximum operating current*
1
Cooling
A
15.0 20.0 35.0
Heating 15.0 20.0 35.0
Fan
Airflow rate
Cooling
HIGH
CFM (m
3
/h)
309 (520) 324 (550) 529 (900) 706 (1,200)
MED 259 (435) 285 (484) 441 (750) 588 (1,000)
LOW 208 (350) 235 (400) 371 (630) 500 (850)
Heating
HIGH 309 (520) 324 (550) 529 (900) 706 (1,200)
MED 259 (435) 285 (484) 441 (750) 588 (1,000)
LOW 208 (350) 235 (400) 371 (630) 500 (850)
Type × Q'ty Sirocco × 2 Sirocco × 3 Sirocco × 2
Motor output W 40 60 95
Static pressure range inWG (Pa) 0 to 0.2 (0 to 50) 0.1 to 0.4 (25 to 100)
Sound pressure level*
2
Cooling
HIGH
dB (A)
35 36 38 42
MED 33 34 37 38
LOW 32 33 36 36
Heating
HIGH 35 36 38 42
MED 33 34 37 38
LOW 32 33 36 36
Heat exchanger type
Dimensions (H × W × D) in (mm)
8-1/4 × 28-13/16 × 1-5/8
(210 × 732 × 40.8)
8-1/4 × 39-7/16 × 1-5/8
(210 × 1,002 × 40.8)
11-9/16 × 27-9/16 × 1-5/8
(294 × 700 × 40.8)
Fin pitch FPI 16
Rows × Stages 3 × 10 3 × 14
Pipe type Copper
Fin type Aluminum
Dimensions
(H × W × D)
Net
in (mm)
7-1/2 × 35-7/8 × 17-5/8
(190 × 910 × 447)
7-1/2 × 46-1/2 × 17-5/8
(190 × 1,180 × 447)
10-5/8 × 35-3/8 × 28-3/8
(270 × 900 × 720)
Gross
11-1/4 × 42-1/2 × 22-1/4
(285 × 1,080 × 565)
11-1/4 × 53-1/8 × 22-1/4
(285 × 1,350 × 565)
13-3/8 × 46-1/8 × 34-1/4
(340 × 1,170 × 870)
Weight
Net
lb (kg)
39.7 (18) 49.6 (22.5) 66.1 (30)
Gross 46.3 (21) 57.3 (26) 77.2 (35)
Connection pipe
Size
Liquid
in (mm)
Ø1/4 (Ø6.35) Ø1/4 (Ø6.35) Ø1/4 (Ø6.35)
Gas Ø3/8 (Ø9.52) Ø1/2 (Ø12.70) Ø5/8 (Ø15.88)
Method Flare
Drain hose
Material PVC
Tip diameter in (mm) Ø1-1/8 (Ø27.8) (I.D.), Ø1-1/4 (Ø32.3) (O.D.)
Operation range
Cooling
°F (°C) 61 to 86 (16 to 30)
%RH 80 or less
Heating °F (°C) 61 to 86 (16 to 30)
Remote controller type Wired (IR receiver unit [option])
IR receiver unit (Option) Model name WH-AIRDH1
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 (15.56 °CWB), and outdoor temperature of 47 °FDB (8.33 °CDB)/43 °FWB (6.11 °CWB).
– Pipe length: 25 ft (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: Maximum current is maximum value when operated within the operation range.
• *2: 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.
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