Fujitsu Airstage J-II Series Design & Technical Manual page 613

„ WIRING METHOD
„
Practical transmission wiring method is shown below.
Each terminal has to be connected the following rules.
To other refrigerant circuit outdoor unit
Breaker 2
Breaker 1
Outdoor unit
Transmission
Indoor unit
*1
Transmission
Power supply
Remote control
G
(N)
*2
Breaker 2
Breaker 1
G
(N)
Remote
control unit
208 / 230V 1ø 60 Hz
● X1, X2 : Indoor units to outdoor unit (Master)
„
● Z1, Z2 : Connection for different refrigerant circuit of master outdoor unit
„
● H1, H2 : Module link connection between master and slave outdoor units
„
(It is required for combination use.)
● Breaker 1 : Ground Fault Equipment Breaker (GFEB)
„
● Breaker 2 : Maximum Circuit Breaker (MAX.CKT.BKR)
„
*1 : The number of power supply terminals is different depending on the indoor unit model.
For the wiring, refer to the indoor unit installation manual.
*Caution: When installing this system in high humidity locations, install using ground fault equipment breakers
(often referred to in other countries as an ELCB earth leakage current breaker) to reduce the risk of leaking cur-
rent which may result in electric shock or potential fire. We suggest installing GFEB or follow local electrical code.
This system uses an inverter, which means that when used with a ground fault breaker you must use breakers that
can handle higher harmonics such as a (GFEB) Ground Fault Equipment Breaker (30 mA or greater) in order to
prevent malfunctioning of ground fault device
Power supply
208/230V 1ø 60Hz
G
Indoor unit
*1
Transmission
Power supply
Remote control
G
(N)
Breaker 2
Breaker 1
G
(N)
208 / 230 V 1ø 60 Hz
- (06 - 49) -
*1
Transmission
Power supply
*2
Breaker 2
Breaker 1
Remote
control unit
208 / 230V 1ø 60 Hz
Indoor unit
Remote control
G
(N)
*2
G
(N)
Remote
control unit