Pipe Connections Between Indoor And Outdoor Unit - LG MULTI V Installation Manual

Pipe connections between indoor and outdoor unit

Pipe connections between indoor and outdoor unit
• Pipe connections can be done on the front side or on the side according to the installation environments.
• Be sure to let 2.8psi(0.2kgf/cm²) 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.
Left Side Pipe Draw Out
Preparation Work
• Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs.
Removal Area for common
pipe bottom side connections.
Removal Area for Liquid/Gas pipe
bottom side connections.
CAUTION
• Remove the brackets on the inverter condenser legs that were fixed to protect the unit during the transportation.
(If bracket is not removed, abnormal noise or vibration may occur.)
Brackets for Transportation
28 Outdoor Unit
Right Side Pipe Draw Out
Front Side Pipe Draw Out
Refrigerant 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.
Nut
Washer
1. Open the front panel.
2. Remove Brackets
3. Fix with only nut and washer as shown in the
figure.
Regulator
Nitrogen
Direction
Taping
Valve
Nitrogen