Toshiba RAS-25N4KVRG-ND Service Manual page 76

Draining the Water
• Holes are provided on the base plate of the outdoor unit
to ensure that the defrost water produced during heating
operations is drained off efficiently. If a centralized drain
is required when installing the unit on a balcony or wall,
follow the steps below to drain off the water.
1. Proceed with water-proofing by installing the water-proof
rubber caps in the 2 elongated holes on the base plate of
the outdoor unit. [How to install the water-proof rubber
caps]
(1) Place four fingers into each cap, and insert the caps
into the water drain holes by pushing them into place
from the underside of the base plate.
(2) Press down on the outer circumferences of the caps
to ensure that they have been inserted tightly.
(Water leaks may result if the caps have not been
inserted properly, if their outer circumferences lift up
or the caps catch on or wedge against something.)
2. Install the drain nipple and a commercially available drain
hose (32 mm inside diameter), and drain off the water.
(For the position where the drain nipple is installed, refer to
the installation diagram of the indoor and outdoor units.)
• Check that the outdoor unit is horizontal, and route the
drain hose at a downward sloped angle while ensuring
that it is connected tautly.
Base plate
Drain nipple
Ø32
Ø32
or
Commercially available drain hose
Do not use ordinary garden hose, but one can flatten and
prevent water from draining.
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Drain nipple
90º
Ø32
10-4-3. Refrigerant piping connection
<Flaring>
1. Cut the pipe with a pipe cutter.
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
RIDGID (clutch type)
Outer dia.
of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
IMPERIAL (wing nut type)
Outer dia. of copper pipe
Ø12.70
Pipes thickness
CAUTION
• Do not scratch the inner surface of the f ared part when removing
burrs.
• Flare processing under the condition of scratches on the inner surface
of f are processing part will cause refrigerant gas leak.
C L
- 76 -
Obliquity
90°
Fig. 10-4-3
Die
Pipe
Fig. 10-4-4
Tool used
0 to 0.5
0 to 0.5
0 to 0.5
0.8 mm or more
Tool used
Ø6.35 1.5 to 2.0
Ø9.52 1.5 to 2.0
2.0 to 2.5
0.8 mm or more
Roughness
Warp
A
Conventional tool
used
1.0 to 1.5
1.0 to 1.5
1.0 to 1.5