Toshiba Carrier MMD-UP0721HP-UL Manual De Instalación página 17

Wiring between indoor and outdoor units
NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically
the header unit.
Wiring example
Outdoor Power supply
Circuit breaker
Header outdoor unit
Ground
L1 L2 L3 N
terminal
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit Indoor unit
Ground Ground
L1 L2
Disconnect Disconnect
switch per switch per
NEC NEC
A B
Remote control
Indoor
power
supply
208/
Circuit
230-1-60
breaker
31-EN
Outdoor Power supply
Circuit breaker
Follower outdoor unit
Ground
L1 L2 L3 N
terminal
Control wiring between outdoor units
Indoor unit Indoor unit
Ground Ground
L1 L2 L1 L2 L1 L2
Disconnect Disconnect
switch per switch per
NEC NEC
A B A B
Remote control Remote control
Group control
– 16 –
EN
EN
ID
32-EN