2. PRECAUTION FOR INSTALLATION
Precaution for installation
Selection of pipe
Pipe thickness
Outer diameter Thickness
1/4” (6.35mm) 0.8 mm
3/8” (9.52mm) 0.8 mm
1/2
”
(12.7mm) 0.8 mm
Be sure to use this pipe thickness and over
for countermeasure against higher
pressure.
Flare and flare nuts
Diameter 1/4” (6.35mm) 3/8”(9.52mm) 1/2” (12.7mm)
Refrigerant
R410A
R22
/R407C
R410A R410A
A 9.1 9.0 13.2 13.0 16.6
16.2
B 13 12 20 15 13 20
C 12 11 16 12.5 19 16
Nut width 17 22 26 24
Always use the flare nut that is packed
with the product.
Do not use existing (for R22) pipes
• Be sure to use new pipes when replacing
conventional (R22) model with HFC
(R407C, R410A) model.
• If you use existing pipes, it may cause
resolution of compressor oil by remaining
mineral oil.
R22
/R407C
R22
/R407C
06-02
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