LG Therma V AHUW096A3 Installation Manual page 43

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
- Tightening torque is as following.
Outside diameter
mm inch
6.35 1/4
9.52 3/8
12.7 1/2
15.88 5/8
19.05 3/4
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 right figure.
- If insects or small animals enter the outdoor
unit, it may cause a short circuit in the
electrical box.
- Finally, form the pipes by wrapping the
connecting portion of the indoor unit with
insulation material and secure it with two
kinds of vinyl tape. Ensuring thermal
insulation is very important.
PIPING AND WIRING FOR OUTDOOR UNIT
Torque
kgf·m
1.8 ~ 2.5
3.4 ~ 4.2
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Putty or insulating material
(produced locally)
Continuous
Torque wrench
Outdoor unit
Liquid side piping
Gas side piping
Connecting wire
Drain hose
(if necessary)
Connection pipe
43