Fujitsu Airstage UTP-RX08AH Installation Manual page 10

7.3.3 Wiring method
The wiring example for RB units ,outdoor units and indoor units is shown in the fi gure.
Transmission
Power
supply
L N
Breaker
L N
Transmission
Power supply
Indoor unit
230V 1 50Hz
Power
supply
L N
Breaker
L N
Transmission
Power supply
Indoor unit
230V 1 50Hz
The transmission cable connects indoor units belonging to the same RB group. The transmission cable cannot
be used to connect indoor units belonging to different RB groups.
Transmission line
Refrigerant pipe
RB unit
RB group
GOOD
If using the indoor unit as a dedicated room cooling device, connect the
transmission terminal of the indoor unit to the "OUT/RB" terminal of RB unit or
outdoor unit transmission terminal.
Transmission line
Refrigerant pipe
RB unit
RB group
GOOD
En-9
Outdoor unit
RB unit
Transmission Transmission
Indoor unit Indoor unit
RB unit
Transmission Transmission
Indoor unit Indoor unit
Transmission line
Refrigerant pipe
RB unit
RB group
PROHIBITED
Refrigerant pipe
RB unit
RB group
PROHIBITED
*1):Cooling only
Refrigerant piping
Transmission
Indoor unit
Transmission Transmission
Indoor unit Indoor unit
Transmission line
RB unit
RB group
PROHIBITED
Crossover wiring of power supply
: Pull box
Breaker
L N
Power supply
230V 1ø 50Hz
Transmission
Indoor unit
RB unit
[UTP-RX01*H]
Power
supply
L N
Breaker
L N
Transmission
Power supply
Indoor unit
230V 1 50Hz
RB unit
Power supply
L N
RB unit
Power supply
Power supply
L N
*1
RB unit
L N