Refrigerant Piping - Toshiba RAV-SM563AT-E Installation Manual

Optional Installation Parts (Local Procure)
Parts name

Refrigerant piping

A Liquid side : Ø6.4 mm or Ø9.5 mm
Gas side : Ø12.7 mm or Ø15.9 mm
Pipe insulating material (polyethylene
B
foam, 6 mm thick)
C Putty, PVC tapes
TAKE NOTICE THESE IMPORTANT 4 POINTS BELOW FOR PIPING WORK
1. Keep dust and moisture away from inside the connecting pipes.
2. Tightly connect the connection between pipes and the unit.
3. Evacuate the air in the connecting pipes using VACUUM PUMP .
4. Check gas leak at connected points.
4
REFRIGERANT PIPING
For the information for works (Re-use of the existing pipes), refer to Appendix in page 8.
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 manufac-
tured 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 diam. of copper pipe
6.4
9.5
12.7
15.9
Q'ty
Each one
1
Each one
CAUTION
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
Refrigerant Piping Connection
<Piping connection>
Capacity Liquid side
rank
Outer
RAV- diameter
SM56 Ø6.4
SM80 Ø9.5
* 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.
• Projection margin in flaring :
B (Unit : mm)
Rigid (Clutch type)
Outer diam.
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 diam. of copper pipe
6.4
9.5
12.7
15.9
6
Gas side
Outer
Thickness Thickness
diameter
0.8 Ø12.7
0.8 Ø15.9
Conventional tool used
R22 R410A
(Same as left) 1.0 to 1.5 0.5 to 1.0
(Same as left) 1.0 to 1.5 0.5 to 1.0
(Same as left) 1.0 to 1.5 0.5 to 1.0
(Same as left) 1.0 to 1.5 0.5 to 1.0
R410A R22
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
0.8
1.0
B
R22