LG A3UW186FA3 Installation Manual page 17

3. Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping
housing section.
CAUTION: Installation Information (For right piping)
For right piping, follow the instruction below.
Good case
• Press on the upper side of clamp and unfold
the tubing to downward slowly.
Connection of piping - Outdoor
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Connecting pipe order
1) A~E-UNIT gas side pipe
2) A~E-UNIT liquid side pipe
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
Ø9.52
Ø12.7
Ø15.88
Ø19.05
Torque
kgf . m
1/4 1.8~2.5
3/8 3.4~4.2
1/2 5.5~6.6
5/8 6.3~8.2
3/4 9.9~12.1
Flaring Work and Connection of Piping
Wrap with vinyl tape
Pipe
Drain hose
Bad case
• Following bending type from left to right could
cause problem of pipe damage.
Outdoor unit
Liquid
side piping
Vinyl tape(wide)
Gas side piping
A-UNIT
B-UNIT
C-UNIT
D-UNIT
E-UNIT
Main gas
side valve
Main liquid
side valve
Installation Manual 17