Refrigerant Piping - Toshiba RAV-SP1102AT-E Manual De Instalación

4

REFRIGERANT PIPING

Pipe Forming/End Positioning
Flaring
1. Cut the pipe with a pipe cutter.
OK
90˚
2. Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured
for R410A are recommended.
However, the conventional tools can be used by
adjusting projection margin of the copper pipe.
• Flaring size : A (Unit : mm)
Outer dia. of copper pipe
6.4
9.5
12.7
15.9
* In case of flaring for R410A with the conventional
flare tool, pull it out approx. 0.5 mm more than that of
R22 to adjust to the specified flare size. The copper
pipe gauge is useful for adjusting projection margin
size.
NO GOOD
Obliquity Roughness Warp
A
+0
A
- 0.4
R410A R22
9.1 9.0
13.2 13.0
16.6 16.2
19.7 19.4
• Projection margin in flaring :
B (Unit : mm)
Rigid (Clutch type)
Outer dia. R410A tool used
of copper
R410A
pipe
6.4 0 to 0.5
9.5 0 to 0.5
12.7 0 to 0.5
15.9 0 to 0.5
Imperial (Wing nut type)
Outer dia. of copper pipe
6.4
9.5
12.7
15.9
7
Conventional tool used
R22 R410A
(Same as left) 1.0 to 1.5
(Same as left) 1.0 to 1.5
(Same as left) 1.0 to 1.5
(Same as left) 1.0 to 1.5
R410A
1.5 to 2.0 1.0 to 1.5
1.5 to 2.0 1.0 to 1.5
2.0 to 2.5 1.5 to 2.0
2.0 to 2.5 1.5 to 2.0
B
R22
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
0.5 to 1.0
R22