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Electrical Connections (Continued)
18
E-
Wiring Diagram of the indoor and outdoor unit
Indoor Unit 1
Indoor Unit 2
Outdoor Unit
C C
A A
U U
T T
I I
O O
N N
C C
A A
U U
T T
I I
O O
N N
When the communication cable exceeds the specified length,
the air conditioner may not operate due to the trouble of
communication between indoor and outdoor unit.
- Maximum length of wiring: less than 120m
- Total length of wiring: less than 240m
- Maximum communication branch cable: 10 branches
Use separate power supply and communication cables.
Cord
Power
cable
Connect the power cable applying the following torque.
Size of terminal screw
M4
M5
M6
M9
Indoor Unit 3
Power
cable
Communication
cable
Cord
Tightening Torque
25~40kgf•cm
35~40kgf•cm
40~80kgf•cm
50~100kgf•cm
Communication
cable
Cord
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