Fujitsu Airstage J-II Series - Page 613

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WIRING METHOD
Practical transmission wiring method is shown below.
Each terminal has to be connected the following rules.
G
Breaker 1
Breaker 2
G
(N)
G
(N)
Breaker 1
Breaker 2
208 / 230V 1ø 60 Hz
G
(N)
G
(N)
Breaker 1
Breaker 2
208 / 230 V 1ø 60 Hz
G
(N)
G
(N)
Breaker 1
Breaker 2
208 / 230V 1ø 60 Hz
To other refrigerant circuit outdoor unit
Power supply
208/230V 1ø 60Hz
Outdoor unit
Remote
control unit
Remote
control unit
Remote
control unit
Indoor unit
Transmission
Transmission
Remote control Remote control Remote control
Transmission Transmission
Indoor unit Indoor unit
Power supply
Power supply
Power supply
*1
*2 *2 *2
*1 *1
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●
X1, X2 : Indoor units to outdoor unit (Master)
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●
Z1, Z2 : Connection for di󰀨erent refrigerant circuit of master outdoor unit
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●
H1, H2 : Module link connection between master and slave outdoor units
(It is required for combination use.)
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Breaker 1 : Ground Fault Equipment Breaker (GFEB)
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Breaker 2 : Maximum Circuit Breaker (MAX.CKT.BKR)
*1 : The number of power supply terminals is di󰀨erent 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 re. 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
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SYSTEM DESIGN SYSTEM DESIGN