Control wiring between indoor and outdoor units
NOTE
An outdoor unit that is interconnected to the indoor units automatically becomes the header unit.
▼ Wiring example
Outdoor Power supply
380V-415V ~, 50Hz
380V ~, 60Hz
Earth
L1 L2 L3 N
terminal
Indoor unit
Earth
Indoor power supply
220-240V, ~, 50Hz
208-230V ~, 60Hz
Earth leakage
breaker power
switch
Wired remote controller wiring
• As the wired remote controller wire has non-polarity, there is no problem if connections to indoor unit terminal
blocks A and B are reversed.
▼ Wiring diagram
Address setup
Set up the addresses as per the Installation Manual supplied with the outdoor unit.
18-EN
Earth leakage
breaker
Header outdoor unit
U1 U2 U3 U4
U5 U6
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit
Earth
L N
U1 U2
A B
A B
Remote controller
Pull box
Terminal block for
remote controller
wiring of indoor unit
A
B
Outdoor Power supply
380V-415V ~, 50Hz
380V ~, 60Hz
Earth leakage
breaker
Follower outdoor unit
Earth
L1 L2 L3 N
U1 U2 U3 U4
terminal
Control wiring between outdoor units
Indoor unit
Earth
L N
U1 U2
A B
A B
Remote controller
Pull box
Wired remote controller wire
(Procured locally)
–18–
U5 U6
Indoor unit
Earth
L N
U1 U2
A B
A B
Remote controller
Pull box
Terminal block
A
Wired rem
B
controller unit
Installation Manual
L N
U1 U2
A B