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5. ELECTRICAL WIRING
L
N
Power Supply
Signal wire between indoor/outdoor unit
L N
Branch Box
Power Supply
L1 L2 L3
Power Supply
Signal wire between indoor/outdoor unit
Indoor unit
L N
Branch Box
Power Supply
Power (220-240V~ 50Hz 1-Phase)
Switch / Circuit breaker
Power wiring
(outdoor)
Outdoor
Unit
Communication Bus
Mini VRF Heat Pump Outdoor Unit
Outdoor unit
X Y E
P Q E
Indoor unit
P
Q
E
X
Y
E
L N
Branch Box
For 8~18 kw (1-Phase)
Outdoor unit
X Y E
P Q E
N
P
Q
E
X
Y
E
L N
Branch Box
For 10.5~18 kw (3-Phase)
Power (220-240V~ 50Hz 1-Phase)
Switch / Circuit breaker
Power wiring
(indoor)
Indoor
Indoor
Unit
Unit
X
Y
E
CCM
Indoor unit
P
Q
E
X
Y
E
Branch Box
Signal wire between indoor units
Please use 3-core shielded wire, and connect the shielded layer to ground.
X
Y
E
CCM
Indoor unit
P
Q
E
X
Y
E
Branch Box
Signal wire between indoor units
Please use 3-core shielded wire, and connect the shielded layer to ground.
Wire distribution box
Indoor
Unit
For 8~18 kW
ELECTRICAL WIRING | 9
X
Indoor unit
L N
P
Q
E
X
Y
E
X
Indoor unit
L N
P
Q
E
X
Y
E
In broken line table, users can purchase the central
control montior when necessary.
Central control
Computer
monitor (CCM)
6 720 874 421 (2017/04) ZA
CCM
Y
E
Fig. 5-1
CCM
Y
E
Fig. 5-2
Fig. 5-3
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