LB-D2460HL - LG Air Conditioner Service Manual (repair manual). Page 20

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1. Form the piping according to its routing. Avoid

bending and bending back the same piping point
more than three times. (This will result in hard-
ening the pipe.)

2. After deforming the piping, align centers of the

union fitting of the indoor unit and the piping, and
tighten them firmly with wrenches.

3. Connect pipe to the service valve or ball valve

which is located below the outdoor unit.

4. After completing the piping connection, be sure

to check if there is gas leakage in indoor and
outdoor connection.

After completing the piping connection, execute
vacuum drying for the connecting piping and the
indoor unit.
The vacuum drying must be carried out using the
service ports of both the liquid and gas side valves.

Outdoor

unit

Liquid side

Flare connection

Flare connection

Gas side

Indoor 

unit

Union

Capacity

Liquid side piping

Gas side piping

24K BTU

3/8"

5/8"

Pipe size

Torque

3/8"

4.2kg.m

1/2"

5.5kg.m

5/8"

6.6kg.m

3/4"

6.6kg.m

Liquid Side 

Gas Side