Wiring Method - Fujitsu AIRSTAGE K00250LW Addendum

6. 2.

Wiring method

The wiring example for RB units ,outdoor units and indoor units is shown in the fi gure.
To other refrigerant circuit
outdoor unit
Power supply
208/230V 3Φ 60Hz
L1 L2 L3
Breaker1
Breaker2
Outdoor unit 1
(Master unit)
L1 L2 L3
Power supply
Transmission
RB unit
Power
supply
IN/U
L1 L2
(N)
Breaker2
Breaker1
L1 L2 Transmission
(N)
Power supply Indoor unit
208/230V 1Φ
Power
60Hz Remote
supply
control
L1 L2
(N)
Breaker2
Breaker1
L1 L2
(N)
Remote
Power supply control unit
208/230V 1Φ
60Hz
• There are two types of remote controller: the 2-wire type and the 3-wire type. For details, see the relevant remote controller installation manual. (When connecting the 2-wire type
remote controller, Y3 is not used.)
En-13
Power supply Power supply
208/230V 3Φ 60Hz 208/230V 3Φ 60Hz
L1 L2 L3 L1 L2 L3
Breaker1
Breaker2
Outdoor unit 2
(Slave unit 1)
L1 L2 L3
Power supply Power supply
Transmission
RB unit
Power
supply
IN/U
L2
L1
(N)
Breaker2
Breaker1
Transmission
L1 L2
(N)
Indoor unit
Power supply
208/230V 1Φ
Power
Remote
60Hz
supply
control
L1 L2
(N)
Breaker2
Breaker1
L2
L1
(N)
Remote
Power supply
controller
208/230V 1Φ
60Hz
Breaker 1: Ground Fault Equipment Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker (MAX. CKT. BKR)
Breaker1
Breaker2
Outdoor unit 3
(Slave unit 2)
L1 L2 L3
Transmission
Transmission
Indoor unit
Power
Remote
supply
control
L2
L1
(N)
Breaker2
Breaker1
L1 L2
(N)
Remote
Power supply
controller
208/230V 1Φ
60Hz
(*1:Cooling only)
Refrigerant piping
Transmission
Indoor unit
Power Power
Remote
supply supply
control
L1 L2 L1
(N)
Breaker2
Breaker2
Breaker1
Breaker1
L2
L1
(N)
Remote
Power supply
Power supply
controller
208/230V 1Φ
208/230V 1Φ
60Hz
60Hz
*1
Transmission
Indoor unit
Remote
control
L2
(N)
L1 L2
(N)
Remote
controller