42
B
Indoor units are provided with unified power supply*, which are wired as follows:
1. HyperLink (M1M2) communication with the unified power supply:
M1
M2
CN23
M1
M2
L
N
CN1
CN10
M1
M2
L
N
CN1
CN10
L1
La
M1
M2
L
N
CN1
CN10
Ln
××
××
Distribution box
Master
outdoor unit
Indoor unit (n-1)#
···
2-(n-2)# Indoor unit
Indoor unit 1#
Circuit breaker
Power supply for indoor unit
Power supply cable
Communication wires
L1+La+Ln ≤ 2000m
Indoor unit n#
Wire diameter: 0.75mm2
Distribution box
2. P/Q communication:
P
Q
CN22
L
N
CN1
L
N
CN1
L1
La
L
N
CN1
Ln
××
××
P
Q
CN6
P
Q
CN6
P
Q
CN6
R
Master
outdoor unit
Indoor unit (n-1)#
···
2-(n-2)# Indoor unit
Indoor unit 1#
Circuit breaker
Power supply for indoor unit
Power supply cable
Communication wires
Indoor unit n#
Distribution box
Distribution box
Use shielded cables and earth the shield layer.
3. P/Q/E communication:
P Q
CN22
L
N
CN1
L
N
CN1
L1
La
L
N
CN1
Ln
××
××
P Q
CN6
E
E
P Q
CN6
E
P Q
CN6
E
R
Master
outdoor unit
Indoor unit (n-1)#
···
2-(n-2)# Indoor unit
Indoor unit 1#
Circuit breaker
Power supply for indoor unit
Power supply cable
Communication wires
Indoor unit n#
Distribution box
Distribution box
Use shielded cables and earth the shield layer.