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Installation Manual 49
ENGLISH
Electrical Wiring
Control box and connecting position of wiring
- Remove all of the screws at front panel and remove the panel by pulling it forward.
- Connect communication line between master and
slave outdoor unit through the terminal block.
- Connect communication lines between outdoor unit
and indoor units through the terminal block.
- When the central control system is connected to the
outdoor unit, a dedicated PCB must be connected
between them.
- When connecting communication line between out-
door unit and indoor units with shielded wire, con-
nect the shield ground to the earth screw.
WARNING
The temperature sensor for outdoor air should not be exposed to direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
UW1 Chassis(460V)
Main
PCB
Magnet
switch
Only below
models :
ARUN115DT2
ARUN134DT2
ARUN154DT2
Inverter
PCB
Reactor
Inverter
FAN PCB
Take care of the phase sequence
of 3-phase 3-wire power system
Bridge
diode
UW1 Chassis(208/230V)
Noise
Filter
Main
PCB
Magnet
switch
Inverter
PCB
Inverter
FAN PCB
Take care of the phase sequence
of 3-phase 3-wire power system
Transformer
Noise Filter
Front Panel
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