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ENGLISH
Installation Manual 43
Electrical Wiring
Control box and connecting position of wiring
- Remove all of the screws on front panel, and remove the front 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.
Front Panel
UW1 Chassis(460V)!
!
Main>
PCB
Magnet>
switch>
Only below >
models : >
ARUB096DT2>
ARUB115DT2>
ARUB134DT2>
ARUB154DT2
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
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