43
PIPING AND WIRING FOR OUTDOOR UNIT
ENGLISH
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.
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.
Outside diameter
Torque
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
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