Precautions About Installation In Regions With Snowfall And Cold Temperatures; Draining The Water; Refrigerant Piping Connection - Toshiba RAS-B10J2FVG-E Installation Manual

Precautions about Installation in Regions
with Snowfall and Cold Temperatures
• Do not use the supplied drain nipple for draining water. Drain the water
from all the drain holes directly.
• To protect the outdoor unit from snow accumulation, install a holding
frame, and attach a snow protection hood and plate.
* Do not use a double-stacked design.
Snow protection plate
Front
Snow protection hood
Snow accumulation line
Anchor
bolts
CAUTION
1. Install the outdoor unit in a location where there are no obstructions
near its air intake or air outlet.
2. When the outdoor unit is installed in a place that is always exposed
to strong winds like on the coast or on a high story of a building,
secure the normal fan operation using a duct or a wind shield.
3. Especially in windy areas, install the unit to prevent the admission of
wind.
4. Installation in the following places may result in trouble.
Do not install the unit in such places.
• A place full of machine oil
• A saline-place such as the coast
• A place full of sulfi de gas
• A place where high-frequency
waves are likely to be generated,
such as from audio equipment,
welders, and medical equipment.

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 effi 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-proofi 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 fi 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.)
Install at least 50 cm
above the snow
accumulation line.
At least
50 cm
Holding frame
Strong
wind
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
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
Do not use ordinary garden hose, but one can fl atten and prevent water
from draining.

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 fl are 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 fl are has the appropriate shape.
90
A
Die
Pipe
Pipe
RIDGID
Outside (clutch type)
Thickness
diameter R32 or
R410A tool
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 fl ared 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.
• Tightening torque for connection of fl are pipe
The pressure of R32 or R410A is
higher than R22 (Approx. 1.6 times).
Therefore securely tighten the fl are
pipes which connect the outdoor unit
and the indoor unit with the specifi ed
tightening torque using a torque
wrench. If any fl are pipe is incorrectly
connected, it may cause not only a
gas leakage but also trouble in the
refrigeration cycle.
11
Drain nipple
Commercially available
drain hose
Obliquity Roughness
B
A B
IMPERIAL
(wing nut
type) C
R32 or
R410A tool
mm mm mm mm
1.5 to 2.0 9.1 17
1.5 to 2.0 13.2 22
2.0 to 2.5 16.6 26
EN
ES
FR
IT
DE
PT
PL
CZ
Warp
RU
CR
C
HU
TR
Flare Nut
NL
Tighten torque
GR
N·m kgf·m
SV
14 to 18 1.4 to 1.8
33 to 42 3.3 to 4.2
FI
50 to 62 5.0 to 6.2
NO
DK
RO
BG
EE
Flare at
indoor unit side
LV
SK
Flare at
outdoor unit side
SI