Toshiba Carrier RBM-Y0611F4PUL Manuel D'installation page 14

System wiring diagram
Indoor unit / FS unit
power supply
208 / 230 V-1-60 Hz
Circuit breaker
Pull box
EN-25
Outdoor Power supply
Circuit breaker
Header outdoor unit
Ground
L1 L2 L3 U1 U2 S U3 U4 U5 U6 S U1 U2 U3 U4 U5 U6
terminal
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit Indoor unit
Ground Ground
L1 L2 U1 U2 A B
Disconnect Disconnect
A B
switch per switch per
NEC NEC
Remote
control
Pull box
Communication
wire
FS unit
A B
L1 L2
Ground
Disconnect
switch per
NEC
Pull box
13
Outdoor Power supply
Circuit breaker
Follower outdoor unit
Ground
L1 L2 L3 U1 U2 S U3 U4 U5 U6 S
terminal
Control wiring between outdoor units
Indoor unit
Ground
L1 L2 U1 U2 A B L1 L2 U1 U2 A B
Disconnect
A B A B
switch per
NEC
Remote Remote
control control
Pull box Pull box
Communication Communication
wire wire
A B A B
Indoor unit
Ground
L1 L2 U1 U2 A B
Disconnect
switch per
NEC
FS unit
A B A B
L1 L2
Ground
Disconnect
switch per
NEC
Pull box
A B
EN-26