Preparation Work For Piping - LG B70AWYN985 Installation Manual

Preparation Work for piping

- 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 connecting wires
using knock Outs.
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:
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
PIPE CONNECTION
Method of pipe cap work during the installa-
tion of single outdoor unit
1. Remove rubber cap inserted in the com-
mon pipe.
2. Wrap the common pipe service valve with
wet towel.
3. Insert the pipe cap provided into the com-
mon 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 inside the valve.
h If the unit is operated without pipe cap
work, there may be abnormality in the
cycle caused by refrigerant leakage.
Liquid pipe
Gas pipe
Pipe Cap
23