Fujitsu AIRSTAGE K00250LW - 6.2. Wiring Method Overview; Wiring Diagram Examples

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6. 2. Wiring method
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
(N)
L1
L2
L3
L1
L2
L3
L1
L2
L3
L1
L2
L3
L1
L2
L3
L1
L2
L3
To other refrigerant circuit
outdoor unit
Power supply
208/230V 3Φ 60Hz
Outdoor unit 1
(Master unit)
Power supply
IN/U
IN/U
RB unit
Indoor unit
Indoor unit Indoor unit Indoor unit Indoor unit
*1
RB unit
Refrigerant piping
(*1:Cooling only)
Breaker 1: Ground Fault Equipment Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker (MAX. CKT. BKR)
Power supply Power supply
Transmission Transmission Transmission
Outdoor unit 2
(Slave unit 1)
Outdoor unit 3
(Slave unit 2)
Breaker1 Breaker1 Breaker1
Breaker2 Breaker2 Breaker2
Power supply
208/230V 3Φ 60Hz
Power supply
208/230V 3Φ 60Hz
Power
supply
Power
supply
Breaker2 Breaker2
Breaker1 Breaker1
Breaker2
Breaker2
Breaker2
Breaker2
Breaker2
Breaker1
Breaker1
Breaker1
Breaker1
Breaker1
Transmission
Transmission Transmission Transmission Transmission
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power supply
208/230V 1Φ
60Hz
Power
supply
Power
supply
Power
supply
Power
supply
Power
supply
Remote
control
Remote
control
Remote
control
Remote
control
Remote
control
Remote
control unit
Remote
controller
Remote
controller
Remote
controller
Remote
controller
The wiring example for RB units ,outdoor units and indoor units is shown in the fi gure.
• 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.)
9378945159-04_IM.indb 139378945159-04_IM.indb 13 2015/12/1 10:50:562015/12/1 10:50:56