LG ARUM080LTE5 Engineering Product Data Book page 722

Multi V 5
6. Refrigerant piping Installation
6.1 Precautions on Pipe connection / Valve operation
Pipe connection is done by connecting from the end of the pipe to
the branching pipes, and the refrigerant pipe coming out of the
outdoor unit is divided at the end to connect to each indoor unit.
Flare connection for the indoor unit, and welding connection for the
outdoor pipe and the branching parts.
• Use hexagonal wrench to open/close the valve.
• In case of installing as heat pump system, be sure to maintain to
close no use pipe like below picture.
WARNING
• Always careful not to leak the refrigerant during welding.
• The refrigerant generates poisonous gas harmful to human body if combusted.
• Do not perform welding in a closed space.
• Be sure to close the cap of the service port to prevent gas leakage after the work.
CAUTION
Please block the pipe knock outs of the front and side panels after installing the pipes.
(Animals or foreign objects may be brought in to damage the cables.)
Installation of Outdoor Units
[Heat Pump]
Service Port
Liquid Pipe
No Use(Keep Closed)
Gas Pipe
[Heat Recovery]
Service Port
Liquid Pipe
Low Pressure Gas Pipe
High Pressure Gas Pipe
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