F. Unit circuit diagram
The following is a unit circuit diagram (for user's reference); the unit practical
connection should be as the circuit /wiring diagram on the machine.
1) Heat pump WITH auxiliary electric heater:
WATER TEMP.SENSOR
OPERATION PANEL
Transformer
COMPRESSOR
C
YELLOW/GREEN
S
R
Red
Blue
Blue
Blue
Black
YELLOW/GREEN
L N
POWER SUPPLY
XAD236033
2
4
485 Communication
interface
B2 A2
WHITE /12V
SEC
RED /220V
PRI
N
Black
L
Blue
White
Blue
P1
T1 T2 T3 T4 T5
IN3
IN2
IN1
LED2
COM4
COM3
COM1
COM2
COM
Blue
Red
Comp
EH Valve Fan
Red
Red
White
ELECTRIC.HEATER
YELLOW/GREEN
13
COIL TEMP.SENSOR
AMBIENT TEMP.SENSOR
EXHAUST TEMP.SENSOR
RETURN GAS TEMP. SENSOR
Gray
ELECTRIC HEATER PROTECTOR
Red
PRESURE PROTECTOR
Red
Gray
5
V1
Electronic expansion valve
Yellow
4-WAY VALVE
Yellow
FAN MOTOR
Orange
YELLOW/GREEN
White
HI
LOW
V.1