Toshiba CARRIER RAV-SP300AT2-UL - Manual (Page 25)

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c) Insertion of Flare Nut
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.
When using a conventional flare tool, be sure
to secure “dimension A” by using a gauge for
size adjustment.
Fig. 6-2-1 Flare processing dimensions
Table 6-2-3 Dimensions related to flare processing for R410A / R22
Outer diameter
(In (mm))
1/4” (6.4)
3/8” (9.5)
1/2” (12.7)
5/8” (15.9)
Thickness
(In (mm))
0.03” (0.8)
0.03” (0.8)
0.03” (0.8)
0.04” (1.0)
Flare tool for
R410A, R22clutch type
0 – 0.02” (0 – 0.5)
0 – 0.02” (0 – 0.5)
0 – 0.02” (0 – 0.5)
0 – 0.02” (0 – 0.5)
Conventional flare tool (R410A)
Clutch type Wing nut type
0.04” – 0.06” (1.0 – 1.5) 0.06” – 0.08” (1.5 – 2.0)
0.04” – 0.06” (1.0 – 1.5) 0.06” – 0.08” (1.5 – 2.0)
0.04” – 0.06” (1.0 – 1.5) 0.08” – 0.10” (2.0 – 2.5)
0.04” – 0.06” (1.0 – 1.5) 0.08” – 0.10” (2.0 – 2.5)
Table 6-2-4 Flare and flare nut dimensions for R410A
Table 6-2-5 Flare and flare nut dimensions for R22
A (In (mm))
Outer diameter
(In (mm))
1/4” (6.4)
3/8” (9.5)
1/2” (12.7)
5/8” (15.9)
Thickness
(In (mm))
0.03” (0.8)
0.03” (0.8)
0.03” (0.8)
0.04” (1.0)
Dimension (In (mm))
A B C D
0.36” (9.1) 0.36” (9.2) 0.26” (6.5) 0.51” (13)
0.52” (13.2) 0.53” (13.5) 0.38” (9.7) 0.79” (20)
0.65” (16.6) 0.63” (16.0) 0.51” (12.9) 0.91” (23)
0.78” (19.7) 0.75” (19.0) 0.63” (16.0) 0.98” (25)
Flare nut width
(In (mm))
0.67” (17)
0.87” (22)
1.02” (26)
1.14” (29)
Outer diameter
(In (mm))
1/4” (6.4)
3/8” (9.5)
1/2” (12.7)
5/8” (15.9)
3/4” (19.0)
Thickness
(In (mm))
0.03” (0.8)
0.03” (0.8)
0.03” (0.8)
0.04” (1.0)
0.04” (1.0)
Dimension (In (mm))
A B C D
0.36” (9.1) 0.36” (9.2) 0.26” (6.5) 0.51” (13)
0.51” (13.0) 0.53” (13.5) 0.38” (9.7) 0.79” (20)
0.64” (16.2) 0.63” (16.0) 0.51” (12.9) 0.79” (20)
0.76” (19.4) 0.75” (19.0) 0.63” (16.0) 0.91” (23)
0.92” (23.3) 0.94” (24.0) 0.76” (19.2) 1.34” (34)
Flare nut width
(In (mm))
0.67” (17)
0.87” (22)
0.94” (24)
1.06” (27)
1.42” (36)
A
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