Toshiba MMK-AP0157HPUL Service Manual page 91

NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes
automatically the header unit.
Wiring example
Outdoor Power supply
Ground
L1 L2 L3 N
terminal
Indoor unit
Ground
Disconnect
switch per
NEC
Indoor
power
supply
Circuit
208 /
breaker
230-1-60
Address setup
Set up the addresses as per the Installation Manual supplied with the outdoor unit.
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
Terminal block for
remote controller
wiring of indoor unit
Outdoor Power supply
Circuit breaker
Header outdoor unit
Ground
U1 U2 U3 U4 U5 U6
terminal
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit
Ground
A B
L1 L2 U1 U2 L1 L2
Disconnect
switch per
A B
NEC
Remote control
Wired remote controller wire
(Procured locally)
Circuit breaker
Follower outdoor unit
L1 L2 L3 N U1 U2 U3 U4 U5 U6
Control wiring between outdoor units
Indoor unit
Ground
A B
U1 U2 L1 L2
Disconnect
switch per
A B
NEC
Remote control
Terminal block
Wired remote
controller unit
- 91 -
Indoor unit
Ground
A B
U1 U2 L1 L2 U1 U2
Disconnect
switch per
A B
NEC
Remote control
Group control
A B