Outdoor Unit; Installation Place; Precautions About Installation In Regions With Snowfall And Cold Temperatures; Draining The Water - Toshiba RAS-25N4KVPG-ND Installation Manual

Installation Place

• A place which provides the spaces around the outdoor unit as shown in
the diagram
• A place which can bear the weight of the outdoor unit and does not allow
an increase in noise level and vibration
• A place where the operation noise and discharged air do not disturb your
neighbors
• A place which is not exposed to a strong wind
• A place free of a leakage of combustible gases
• A place which does not block a passage
• When the outdoor unit is to be installed in an elevated position, be sure to
secure its feet.
• The allowable length of the connecting pipe.
Model RAS-25N4AVPG-ND
Chargeless up to 15 m
Maximum length 25 m
Additional refrigerant
16 - 25 m
(20 g / 1 m)
charging
Maximum refrigerant
1.30 kg
charging
• The allowable height of outdoor unit installation site.
Model RAS-25N4AVPG-ND
Maximum height 15 m
• A place where the drain water does not raise any problems
Precautions for adding refrigerant
Use a scale having a precision with at least 10 g per index line when adding
the refrigerant.
Do not use a bathroom scale or similar instrument.
CAUTION
When the outdoor unit is installed in a place where the drain water might
cause any problems, Seal the water leakage point tightly using a silicone
adhesive or caulking compound.
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
At least
50 cm
Snow accumulation line
Anchor
bolts

OUTDOOR UNIT

RAS-35N4AVPG-ND
up to 15 m
25 m
16 - 25 m
(20 g / 1 m)
1.30 kg
RAS-35N4AVPG-ND
15 m
Install at least 50 cm
above the snow
accumulation line.
Holding frame
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place always exposed to strong
wind like a coast or on a high storey of a building, secure the normal fan
operation using a duct or a windshield.
3. In particularly windy areas, install the unit such as to avoid 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 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 3 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.)
Drain nipple
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
32
32
or
Commercially available drain hose
Do not use ordinary garden hose, but one can fl atten and prevent water
from draining.
10
Strong
wind
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
90°
C L
32
EN