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12
PIPE CONNECTIONS BETWEEN
INDOOR AND OUTDOOR UNIT
- Pipe connections can be done on the front side or on the side accord-
ing to the installation environments.
2
- Be sure to let 0.2kgf/cm
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.
Right
Side Pipe
Draw Out
Left Side
Pipe Draw
Out
Front 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 Liquid/Gas pipe
bottom side connections.
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 con-
necting wires using Knock Out.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor 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
Liquid pipe
Gas pipe
Leakage Prevention Cap
Regulator
Refrigerant Pipe
Nitrogen
Nitrogen
Nitrogen
Direction
Direction
Direction
Taping
Valve
Nitrogen
Service Port
Refrigerant Charging Port
Pipe Drawing Out during Single / Series connection
Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front
side pipe drawing out.
Pipe Knock
Out for
Liquid/Gas pipes
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Remove only liquid/gas pipe Knock Out
Gas pipe
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