Connecting The Pipings To The Indoor Unit And Drain Hose To Drain Pipe; Connecting The Pipes To The Outdoor Unit - LG AUUQ18GH0 Installation Manual

CONNECTING PIPES
8
Connecting the pipings to the
indoor unit and drain hose to
drain pipe
- Align the center of the pipings and sufficient-
ly tighten the flare nut by hand.
- Tighten the flare nut with a wrench.
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3/8
Ø12.7 1/2
Ø15.88 5/8
- When extending the drain hose at the indoor
unit, install the drain pipe.
Indoor unit tubing
Torque wrench
Indoor unit tubing
Drain pipe
Adhesive
Vinyl tape(narrow)
Connecting the pipes to the
Outdoor unit
Torque
N.m
16±2
38±4
55±6
75±7
Flare nut Pipings
Spanner (fixed)
Flare nut
Connection
pipe
Indoor unit
drain hose
• Align the center of the piping and sufficiently
tighten the flare nut by hand.
• Finally, tighten the flare nut with torque
wrench until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3/8
Ø12.7 1/2
Ø15.88 5/8
Outdoor unit
Torque wrench
* When tighten the pipe, hold the haxagonal
body.
Torque
N.m
16±2
38±4
55±6
75±7
Gas side piping
(Bigger Dia.)
Liquid side piping
(Smaller Dia.)
Tubing
Cover
Continuous
Torque Torque Torque
wrench wrench wrench
(250mm) (250mm) (250mm)
Torque
wrench
(250mm)