AA
24
Connecting the ared pipes
Check if the aring is properly done according to the standard size.
Align the center of the piping and tighten the are nut with your hands. Then, tighten the are nut with torque wrench
in a direction of the arrow indicated in below illustration.
Make sure to use ester oil to coat the are connection section.
Pipe
Flare nutFlare connection section
Monkty
wrench
Torque
wrench
Outside
Diameter
(mm)
Connection
torque
(N·m)
Expansion
dimension
(mm)
Expansion specication
Ø
6.35 1.46~1.76 8.7~9.1
R 0.4~0.8
90° ±2°
45°
±2°
Ø
9.52 3.35~4.09 12.8~13.2
Ø
12.70 5.08~6.18 16.2~16.6
Ø
15.88 6.33~7.73 19.3~19.7
Installation of Air-conditioner
• Blowing Nitrogen gas should be done when welding the pipe.
• Make sure to use the provided are nut.
• Make sure that there are no cracks or twisted part when you need to bend the pipe.
• Do not fasten the are nut with excessive strength.
• R-410A is a high pressure refrigerant and there is a risk of refrigerant leakage if the are connection is not
coated with ester oil. Therefore, apply ester oil to coat the are connection area.
Caution
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