Toshiba RAS-M10PKVP-E Service Manual page 86

10-4-5. Refrigerant Piping Connection
CAUTION
KEEP IMPORTANT 4 POINTS FOR PIPING WORK
1. Keep dust and moisture from entering the pipes.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using
VACUUM PUMP .
4. Check gas leak. (connected points)
u Flaring
1. Cut the pipe with a pipe cutter.
90˚
Fig. 10-4-2
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.
• Projection margin in flaring :
B (Unit : mm)
Rigid (Clutch type)
R410A tool used
Outer dia. of
copper pipe
R410A
6.35 0 to 0.5 (Same as left)
9.52 0 to 0.5 (Same as left)
12.7 0 to 0.5 (Same as left)
Imperial (Wing nut type)
Outer dia. of copper pipe
6.35
9.52
12.7
Obliquity Roughness Warp
Fig. 10-4-3
Conventional tool used
R22 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
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
• Flaring size : A (Unit : mm)
Outer dia. of copper pipe
6.35
9.52
12.7
∗ In the case of flaring for R410A with the
conventional flare tool, pull out it approx. 0.5 mm
more than that for R22 to adjust to the specified
flare size. The copper pipe gauge is useful for
adjusting projection margin size.
10-4-6. Installation
NOTE
For installation, at least 3 dimensions should be
kept free from obstacles (walls).
B
As shown in the figure, hang power cord
and connecting cable downward, and
take out it along piping connection port.
Fixing bolt arrangement of outdoor unit
Suction side
Diffuser
• Secure the outdoor unit with the fixing bolts and nuts
if the unit is likely to be exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
– 86 –
Fig. 10-4-4
+0
A
- 0.4
R410A
9.1
13.2
16.6
Fig. 10-4-5
600
Fig. 10-4-6
A
R22
9.0
13.0
16.2