LG THERMA V AHNW16606B0, Installation Manual, Page: 50 / 65

50 Air-to-Water Heat Pump
Piping and Wiring for Outdoor Unit
Step 2. Tightening
• Align the center of the pipes and sufficiently
tighten the flare nut by hand.
• Tighten the flare nut with a wrench until the
wrench clicks
• Tighten the torque as per values in the table:
Step 3. Preventing entering of foreign
objects
• Plug the pipe through-holes with putty or
insulation material (procured locally) to fill up
all gaps as shown in the figure on the right.
• If insects or small animals enter the outdoor
unit, it may cause a short circuit.
• Finally, fill in the vacuum in between the pipes
by wrapping the conducting portion of the
indoor unit with insulation material and
securing it with two kinds of vinyl tape. Note
that providing thermal insulation is very
important.
mm inch kgf·m
6.35 1/4 1.8 ~ 2.5
9.52 3/8 3.4 ~ 4.2
12.7 1/2 5.5 ~ 6.6
15.88 5/8 6.6 ~ 8.2
19.05 3/4 9.9 ~ 12.1
Outside diameter Torque
Outdoor unit
Continuous
Torque wrench
Gas side piping
Liquid side piping
Putty or insulating material
(produced locally)
Drain hose
(if necessary)
Connecting wire
Connection pipe