Toshiba RAS-10PKVPG-NZ Service Manual page 78

10-4-3. 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 waterproof 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 circumfer-
ences lift up or the caps catch on or wedge
against something.)
Drain nipple
Fig. 10-4-3
2. Install the drain nipple and a commercially
available drain hose (with 16 mm inside diam-
eter), 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
Do not use ordinary garden hose, but one can
flatten and prevent water from draining.
Fig. 10-4-4
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Commercially available
drain hose
10-4- . Refrigerant piping connection
<Flaring>
1. Cut the pipe with a pipe cutter.
90°
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Ridgid (Clutch type)
Outer dia.
R32 tool used
of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
Imper ial (wing nut type)
Outer dia. of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
CAUTION
• Do not scratch the inner surface of the flared part
when removing burrs.
• Flare processing under the condition of scratches
on the inner surface of fl are processing part will
cause refrigerant gas leak.
- 78 -
FILE NO. SVM-18049
Roughness
Obliquity
Fig. 10-4-
A
Die
Pipe
Fig. 10-4-
Conventional tool
used
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
0.8 mm or more
R32
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
0.8 mm or more
Warp