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
• Tightening torque is as following.
Step 3. Preventing entering of foreign
objects
• Plug the pipe through-holes with putty or insu-
lation 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 con-
necting portion of the indoor unit with insulation
material and secure it with two kinds of vinyl
tape. Ensuring thermal insulation is very impor-
tant.
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
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