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32
REFRIGERANT PIPING INSTALLATION
ENGLISH
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 and HR unit. Flare connection for the indoor unit, and welding connection for the outdoor
pipe and the branching parts. (Including HR unit)
- Use hexagonal wrench to open/close the valve.
Low Pressure Gas pipe
Service Port
Liquid pipe
High Pressure Gas pipe
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 wires.)
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.
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REFRIGERANT PIPING INSTALLATION
CAUTION
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