Toshiba RAS-B10SKVP-E Service Manual page 66

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)
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 manufac-
tured 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 R22
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
Tel: 01823 665660
Heronhill - for all your Toshiba requirements
Obliquity Roughness Warp
B
Fig. 10-4-3
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
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
– 66 –
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• Flaring size : A (Unit : mm)
Fig. 10-4-4
Outer dia. of copper pipe
6.35
9.52
12.7
* In the case of flaring for R410A with the conven-
tional 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 adjust-
ing projection margin size.
10-4-6. Installation
NOTE : For installation, at least 3 dimensions
should be kept free from obstacles (walls).
80 mm or more only when unobstructed
to the front and both sides
100 mm or more
from wall
In principle,
leave open
(C)
(B)
200 mm
or more
When installing the outdoor unit,
leave open in at least two of
directions (A), (B), (C) and (D)
shown in the right figure.
As shown in the figure, hang power cord
and connecting cable downward, and
take out it along piping connection port.
Fig. 10-4-5
Fixing bolt arrangement of outdoor unit
Suction side
Elongated
( 11 )
drain hole 115 125
30
Diffuser
Fig. 10-4-6
• 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.
Fax: 01823 665807
A
+0
A
- 0.4
R410A R22
9.1 9.0
13.2 13.0
16.6 16.2
50 mm or more
from wall
(D)
250 mm or more
from wall
(A)
600
50
Drain hole
( 10 )