LG ARUM080LTE5 Engineering Product Data Book page 747

Multi V 5
8. Electrical Wiring
8.1.2 Control box and connecting positioning of wiring
• Remove all of the screws at front panel and remove the panel by pulling it forward.
WARNING
The temperature sensor for outdoor air should not be exposed to direct sunlight.
• Provide an appropriate cover to intercept direct sunlight.
36
• Connect communication line between main and sub 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 outdoor unit and
indoor units with shielded wire, connect the shield ground to the
earth screw.
Front Panel
UXB
(Take care of the phase
sequence of 3-phase
4-wire power system)
Main Board
External Board
Main power line
terminal block
Installation of Outdoor Units
UXA