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52
AH/AY-X08CR
AH/AY-X10CR
AH/AY-X13CR
AH/AY-X10CR
AH/AY-X13CR
2.2 Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does
not enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is
used, and that refrigerant does not leak. When using lubricating oils in the piping processing, use such
lubricating oils whose water content has been removed. When stored, be sure to seal the container with an
airtight cap or any other cover.
(1) Flare Processing Procedures and Precautions
not enter the pipe interior, that no other oil other than lubricating oils used in the installed air conditioner is
used, and that refrigerant does not leak. When using lubricating oils in the piping processing, use such
lubricating oils whose water content has been removed. When stored, be sure to seal the container with an
airtight cap or any other cover.
(1) Flare Processing Procedures and Precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur. Carefully remove all burrs and
clean the cut surface before installation.
clean the cut surface before installation.
c) Insertion of Flare Nut
d) Flare Processing
d) Flare Processing
Make certain that a clamp bar and copper pipe have been cleaned.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according to the type of flare
tool. Be careful. When using a conventional flare tool, be sure to
secure "dimension A" by using a gage for size adjustment.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according to the type of flare
tool. Be careful. When using a conventional flare tool, be sure to
secure "dimension A" by using a gage for size adjustment.
Table 4. Dimensions related to Flare Processing for R410A
Norminal
diameter
Norminal
diameter
(mm)
A (mm)
Conventional flare tool
Clutch type
Wing nut type
1.5 ~ 2.0
1.5 ~ 2.0
2.0 ~ 2.5
2.0 ~ 2.5
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
0 ~ 0.5
0 ~ 0.5
0 ~ 0.5
0 ~ 0.5
Flare tool fot R410A
Clutch type
1/4
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
3/8
1/2
5/8
Table 5. Dimensions related to Flare Processing for R22
Norminal
diameter
Norminal
diameter
(mm)
A (mm)
Conventional flare tool
Clutch type
Wing nut type
1.0 ~ 1.5
1.0 ~ 1.5
1.5 ~ 2.0
1.5 ~ 2.0
0.5 ~ 1.0
0.5 ~ 1.0
0.5 ~ 1.0
0.5 ~ 1.0
0 ~ 0.5
0 ~ 0.5
0 ~ 0.5
0 ~ 0.5
Flare tool fot R410A
Clutch type
1/4
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
3/8
1/2
5/8
Table 6. Flare and Flare Nut Dimensions for R410A
Norminal
diameter
Norminal
diameter
(mm)
Dimension (mm)
Flare nut
width
9.1
13.2
16.6
19.7
A
9.2
13.5
16.0
19.0
B
6.5
9.7
12.9
16.0
C
13
17
22
26
29
20
23
25
D
1/4
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
3/8
1/2
5/8
[Unit: mm]
ØD
A
Fig. 3 Flare Processing DImensions
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