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Refrigerant pipe installation
Connecting the ared pipes
f Check if the aring is properly done according to the standard size.
f 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.
f Make sure to use ester oil to coat the are connection section.
Flare connection section Flare nut
Pipe
Monkey wrench
Torque wrench
Outer diameter (D, mm) Connection torque (N·m) Flare dimension (L, mm) Flare shape (mm)
Ø 6.35 14~18 8.7~9.1
D
L
90° ±2°
45° ±2°
R 0.4~0.8
Ø 9.52 34~42 12.8~13.2
Ø 12.70 49~61 16.2~16.6
Ø 15.88 68~82 19.3~19.7
Ø 19.05 100~120 23.6~24.0
• 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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