Draining The Water; Refrigerant Piping Connection - Toshiba RAS-10J2FVG-TR Installation 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 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.)
Drain nipple
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 flatten and prevent water
from draining.
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Commercially available
drain hose

Refrigerant Piping Connection

Flaring
1. Cut the pipe with a pipe cutter.
2. Deburr the inside of the pipe at its end.
Take steps to ensure that the removed burrs will not enter the pipe.
3. Remove the flare nuts provided with the indoor and outdoor units, and
insert them into the pipe.
4. Flare the pipe.
The projection margin of the pipe must be checked.
5. Check that the flare has the appropriate shape.
°
90
A
Die
Pipe
Pipe
RIDGID
Outside
Thickness (clutch type)
diameter
R32 tool
mm mm mm
6.35 0.8 0 to 0.5
9.52 0.8 0 to 0.5
12.7 0.8 0 to 0.5
CAUTION
Do not scratch the inner surface of the fared part when removing
●
burrs.
Flare processing under the condition of scratches on the inner
●
surface of fare processing part will cause refrigerant gas leak.
Tightening torque for connection of flare pipe
●
The pressure of R32 is higher than R22
(Approx. 1.6 times). Therefore securely
tighten the flare pipes which connect the
outdoor unit and the indoor unit with the
specified tightening torque using a torque
wrench. If any flare pipe is incorrectly
connected, it may cause not only
a gas leakage but also trouble in the
refrigeration cycle.
12
Obliquity Roughness
B
A B Flare Nut
IMPERIAL
(wing nut
C Tighten torque
type)
R32 tool
mm mm mm N m
•
1.5 to 2.0 9.1 17 14 to 18
1.5 to 2.0 13.2 22 33 to 42
2.0 to 2.5 16.6 26 50 to 62
Flare at
outdoor unit side
Warp
C
kgf m
•
1.4 to 1.8
3.3 to 4.2
5.0 to 6.2
Flare at
indoor unit side