LG UU37WISL Installation Manual page 15

Connecting the pipes to the Outdoor unit
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
Ø 6.35
Ø 9.52
Ø 12.7
Ø 15.88
Ø 19.05
Torque wrench
C When tighten the pipe, hold the haxago-
nal body.
Preventing foreign objects from entering
- Plug the pipe through-holes with putty or
insulation material(procured locally) to stop
up all gaps.
Torque
N m
1/4 16±2
3/8 38±4
1/2 55±6
5/8 75±7
3/4 110±10
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
CONNECTING PIPES
C When tighten the pipe, hold the haxago-
nal body.
Contin-
uous
C When tighten the pipe, hold the haxago-
nal body.
C When tighten the pipe, hold the haxago-
nal body.
15
Liquid side piping
(Smaller diameter)
Gas side piping
(Bigger diameter)
Torque wrench
Torque
wrench
Continuous
Torque
wrench
Drain hose
Connecting wire
Gas side piping
Liquid side piping