Refrigerant piping, Ok no good, Caution – Toshiba RAV-SM561AT-E User Manual
Page 9
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RAV-SM561AT-E, RAV-SM801AT-E
Optional Installation Parts (Local Procure)
Refrigerant Piping Connection
<Piping connection>
A
B
C
Parts name
Refrigerant piping
Liquid side : Ø6.4 mm or Ø9.5 mm
Gas side : Ø12.7 mm or Ø15.9 mm
Pipe insulating material (polyethylene
foam, 6 mm thick)
Putty, PVC tapes
Q’ty
Each one
1
Each one
CAUTION
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.
Capacity
rank
RAV-
SM56
SM80
Liquid side
Outer
Thickness
diameter
Ш6.4
0.8
Ш9.5
0.8
Gas side
Outer
Thickness
diameter
Ш12.7
0.8
Ш15.9
1.0
4
REFRIGERANT PIPING
90˚
Obliquity
OK
NO GOOD
Roughness
Warp
Flaring
1. Cut the pipe with a pipe cutter.
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)
A
* 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)
Imperial (Wing nut type)
Outer diam.
of copper
pipe
6.4
9.5
12.7
15.9
R410A tool used
R410A
R22
0 to 0.5
(Same as left)
0 to 0.5
(Same as left)
0 to 0.5
(Same as left)
0 to 0.5
(Same as left)
Conventional tool used
R410A
R22
1.0 to 1.5
0.5 to 1.0
1.0 to 1.5
0.5 to 1.0
1.0 to 1.5
0.5 to 1.0
1.0 to 1.5
0.5 to 1.0
Outer diam. of copper pipe
6.4
9.5
12.7
15.9
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
- 0.4
A
R410A
R22
9.1
9.0
13.2
13.0
16.6
16.2
19.7
19.4
Outer diam. of copper pipe
6.4
9.5
12.7
15.9
B