46
Refrigerant pipe installation
Connecting the flared pipes
f
Check if the flaring is properly done according to the standard size.
f
Align the center of the piping and tighten the flare nut with your hands. Then, tighten the flare nut with torque wrench in
a direction of the arrow indicated in below illustration.
f
Make sure to use ester oil to coat the flare 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 flare nut.
• Make sure that there are no cracks or twisted part when you need to bend the pipe.
• Do not fasten the flare nut with excessive strength.
• R-410A is a high pressure refrigerant and there is a risk of refrigerant leakage if the flare connection is not coated
with ester oil. Therefore, apply ester oil to coat the flare connection area.
CAUTION
Summary of Contents for DVM S AM080FXVAGH
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