Draining The Water; Refrigerant Piping Connection; Ridgid; Imperial - Toshiba RAS-18J2KVSG-E Service Manual

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 eff ciently.
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-proof ng 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 f ngers 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 (with
16 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
Do not use ordinary garden hose, but one can f atten and prevent water
from draining.
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Drain nipple
Commercially available
drain hose

10-4-3. 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.
of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
IMPERIAL (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 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.
- 79 -
Roughness
Obliquity
Fig. 10-4-3
A
Die
Pipe
Fig. 10-4-4
Conventional tool
Tool used
0 to 0.5
0 to 0.5
0 to 0.5
0.8 mm or more
Tool used
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
0.8 mm or more
Warp
used
1.0 to 1.5
1.0 to 1.5
1.0 to 1.5