Wiring Diagrams; Models: Whm24Sza21S And Whm36Sza21S - Westinghouse WHM24DMA21S Design & Technical Manual

5. Wiring diagrams

5-1. Models: WHM24SZA21S and WHM36SZA21S

USE COPPER SUPPLY WIRES
POWER TERMINAL PANEL
L1
L2
CONNECTION TERMINAL PANEL
C
B
Y
W
SI
4-WAY VALVE
OPTIONAL
Heating Belt
OPTIONAL
Heating
OPTIONAL
INDUCTOR
COMPRESSOR
U/R
CM
V/S
W/C
YEL/GRN
Fan motor
Pin No. Terminal
code
1 FG
2 Vsp
Vcc
3
4 GND
5
6 Vm
Temperature
Thermistor
(Outdoor temp.)
Thermistor
(Coil & Defrost temp.)
Thermistor
(Discharge temp.)
5-1. Models: WHM24SZA21S and WHM36SZA21S
BRN AC-LIN (CN501)
AC-NIN (CN502)
BLU
YEL/GRN EARTH (CN503)
BLU X12.4
X12.3
RED
X12.2
WHT
X12.1
BLK
YEL X3
4-WAY (CN507)
Heating Belt (CN509)
Heating (CN508)
L1 (CN201)
L2 (CN202)
RED U (CN103)
WHT V (CN102)
BLU
W (CN101)
Function of terminal
Revolution pulse output
Speed control voltage input
Control power voltage input
GND
Motor power voltage input
0 32 F 20 68 F
15 k 6.5 k
1.3 V 2.2 V
15 k 6.5 k
1.3 V 2.2 V
187 k 72.1 k
0.18 V 0.43 V
FG (CN901.1)
Vsp (CN901.2)
Vcc (CN901.3)
GND (CN901.4)
+310V (CN901.6)
Control Board
CN803
EEV (CN510)
HPS (X2)
OVER.H (CN704)
ROOM (CN703)
COIL (CN702)
DISS (CN701)
Lead wire
color
Compressor
24 model: 0.75
Blue
36 model: 0.75
Yellow
(
20 68 F
White
Black
Red
30 86 F
4.5 k
2.7 V
4.5 k
2.7 V
46.5 k
0.64 V
- 27 -
DC FAN MOTOR
FG
Vsp
Vcc
FM
GND
+310V
EARTH
YEL/GRN
OPTIONAL
DISPLAY BOARD
ELECTRONIC
EXPANSION
VALVE
M
HIGH PRESSURE
OVERHRAT
PROTECTOR
OPTIONAL
OUTDOOR TEMP.
COIL TEMP.
DISCHARGE TEMP.
)
5. Wiring diagrams