LG L8UC100BFA2 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.
NOTICE
• In case of 100 kBtu/h Outdoor Unit: Use Short
Tube for connecting 48 kBtu/h indoor unit to
the outdoor unit, not the Branch Distributor.
• In case of 150 kBtu/h Outdoor Unit: Use Y
Connector for connecting 48 kBtu/h indoor
unit to the Branch Distributor.
Flaring Work and Connection of Piping
Outdoor 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
Short tube connector
Torque
wrench
B-UNIT
Liquid side piping
Gas side piping
Torque
kgf . cm
180~250
340~420
550~560
630~820
990~1,210
Outdoor unit
B-UNIT
A-UNIT
Liquid side piping
Installation Manual 33