To Connect The Refrigerant; To Connect The Refrigerant Piping To The Compressor Module; Preparation Work; Pipe Drawing Out - LG ARUN050LMC0 Installation Manual

TO CONNECT THE REFRIGERANT

PIPING TO THE COMPRESSOR
MODULE
- Pipe connections can be done on the top side or on the rear side
according to installation enviroments.
- Be sure to let 0.2kgf/cm 2 Nitrogen flow in the pipe when welding.
- If Nitrogen was not flown during welding, many oxidized membranes
may form inside the pipe and disturb the normal operations of valves
and condensers.
Top side pipe draw out
Rear side pipe draw out

Preparation Work

- Use Knock Outs of Base Pan of the Outside Unit for Left/Right or
Bottom pipe drawing outs.
Cover the uninstalled area with a cover
<Liquid pipe>
!
CAUTION
• Do not give damage to the pipe/base during the Knock Out
work.
• Proceed to pipe work after removing burr after Knock Out work.
• Perform sleeve work to prevent damage to the wire when
connecting wires using knock Outs.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the Outside Unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether the liquid/gas pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
Regulator
Refrigerant Pipe
Nitrogen Nitrogen Nitrogen
Direction Direction Direction
Taping
Valve
Nitrogen
www.lgcomfortcooling.co.uk
Wet towel
<Gas pipe>
Charging Port
Gas Pipe to
Heat Exchanger
Module
Liquid Pipe to
Heat Exchanger
Module

Pipe Drawing Out

Method of out pipes on the top side
Close the cover with the screw.
Method of drawing out pipes on the rear side
- Proceed with the pipe work as shown in the below figure for rear
side pie drawing out.
Close the cover with the screw.
13
Gas Pipe to
Indoor Unit
Liquid Pipe to
Indoor Unit