Diagram of refrigerant cycle & Wiring
Gas piping
Wide service valve
Pressure
sensor
High pressure switch
Compressor
Accumulator
4-way valve
Heat exchanger
Liquid piping
Check valve
Heating cycle
Cooling cycle
INDOOR UNIT
OUTDOOR UNIT
P
P
Heat exchanger
EEV
Service valve
Electrical wiring diagram
Refrigerant flow diagram
3
Note
:
alid for 48K
and
60K
model
s
.
High pressure switch is only v
L1 L2 PE
Power supply
Power supply
Power supply
Thermostat
Indoor unit
Outdoor unit
Power
terminal
panel
OR
(L2)
(L2)
()
(L1)
(L1)
W1
B
C
R
Y
G
G R C
C B Y W SI
W1 SI
Note
:
The SI(signal) wire between the indoor and outdoor units is not indispensable, especially when the outdoor unit is connected to an
indoor unit of a different brand. It is more energy-saving when the outdoor unit is connected to an indoor unit of the same
brand by SI wire. However, it still can run without it.