Table of Contents
Installation
Flare Connection
(a) Stiffened pipe must always be annealed at least once prior to the flaring work.
(b) A pipe cutter must be used to cut the pipe. (A large pipe cutter must be used where the pipe
(c) Set the flaring tool to make sure the flare size remains within the prescribed limits.
New Rank Compatible Flare Tool
Compared to previous refrigerants, the components of a HFC refrigerant is small. R-410A also
has a higher pressure than other refrigerants. Therefore, in order to strengthen the intensity of
the form and size of the flare section used for R-410A (class 2) apparatus, unlike the
specification of the conventional refrigerants, it was set up with different standards.
When carrying out flare processing, use a new rank compatible flare tool or a conventional flare
tool.
Flare Gauge (Adapter Corresponding to the New Rank)
When using the later, use a flare gauge to take out the pipe from the gauge bar, adjust it, and
then carry out the flare processing.
Size from the dice surface to the copper tip (in mm)
(d) Coat the inner and outer surface of the flare with refrigerator oil (Ester or ether oil). (this
30
has a large diameter. When cutting a pipe which is too big for the pipe cutter a metal saw
may be used but care must be taken to ensure that the debris from sawing does not get into
the pipe.)
Nominal diameter
Outer
Wall
Name
diameter
thickness
1/4"
6.35
0.8
3/8"
9.52
0.8
1/2"
12.70
0.8
5/8"
15.88
1.0
ensures that the flare nut passes smoothly, preventing the pipe from twisting.)
Do not use SUNISO-4GS oil.
External diameter of pipe d
1/4
6.35
3/8
9.52
1/2
12.7
5/8
15.88
3/4
19.05
Size
Thickness
Previous refrigerant (R-22, R-407C etc.)
The conventional flare tool
Clutch type
0~0.5
0~0.5
0~0.5
0~0.5
Oil
Oil
Pipe widening dimensions A
9.1
13.2
16.6
19.7
24.0
12mm×72mm
1.0×0.5mm Each
Flare gauge
R-410A
The conventional flare tool
Clutch type
1.0~1.5
1.0~1.5
1.0~1.5
1.0~1.5
General Information
SiEN34-705
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