LG MULTI V Installation Manual page 29

n Remove leakage prevention cap
• Remove the leakage prevention cap attached to the out-
door unit service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
1. Verify whether the liquid/gas/common pipes are locked.
2. Extract remaining refrigerant or air inside using the
service port.
3. Remove the leakage prevention cap
n Method of pipe cap work during the instal-
lation of single outdoor unit
1. Remove rubber cap inserted in the common pipe.
2. Wrap the common pipe service valve with wet towel.
3. Insert the pipe cap provided into the common pipe.
4. Place high/low pressure flare nut cap under the pipe cap so
that the pipe cap does not move.
5. Weld the pipe cap.
h If not wrapped with a wet towel, there may be damages in-
side the valve.
h If the unit is operated without pipe cap work, there may be
abnormality in the cycle caused by refrigerant leakage.
Pipe Drawing Out during Single / Series connection
n 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 connections between indoor and outdoor unit
Liquid pipe
Common pipe
Pipe Knock Out for
Liquid/Gas pipes
Pipe Knock Out for
common pipes
Service Port
Gas pipe
Leakage Prevention Cap
Pipe Cap
Flare Nut
Common pipe Liquid pipe Gas pipe
Installation Manual 29