LG L5UC728FA2 Installation Manual page 33

2. Align the center of the pipings and sufficiently
tighten the flare nut by hand
3. Finally, tighten the flare nut with torque
wrench until the wrench clicks.
I When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
CAUTION: Use two wrenches and
tighten with regular torque.
Flaring Work and Connection of Piping
Outdoor unit
B-UNIT
A-UNIT
Liquid side piping
Torque
wrench
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3.8
Ø12.7 1/2
Ø15.88 5/8
Ø19.05 3/4
Liquid side piping
Gas side piping
Torque
kgf . cm
180~250
340~420
550~560
630~820
990~1 210
Installation Manual 33