Toshiba RAS-07PKVP-E Service Manual page 65

High Wall, Heat Pump Type
9-4. Installation of Outdoor
Unit
9-4-1. Installation Location
• A place which provides enough space 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 neighbours.
• A place which is not exposed to a strong wind.
• A place free of combustible gases.
• A place which does not block a passageway.
• When the outdoor unit is to be installed in an
elevated position, be sure to secure its feet.
• An allowable height level is up to 10 m.
• A place where the drain water does not cause any
problems.
• This air conditioner accepts a connection piping
length from 2 m to 20 m.
NOTE
• There is no need to add refrigerant as long as the
length of the connection piping is 15 m or less.
• You will need to add 20 g of refrigerant per meter of
added connection piping for installations requiring
connection piping to be between 15 m to 20 m.
Precautions for Adding Refrigerant
• Use a scale having at least 10 g per index line
precision when adding the refrigerant. Do not use a
bathroom scale or similar instrument.
• Use liquid refrigerant when refilling the refrigerant.
Since the refrigerant is in liquid form, it can fill
quickly. Therefore, perform the filling operation
carefully and insert the refrigerant gradually.
9-4-2. 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.
Front
Anchor
bolts
• Install the outdoor unit in a location where there are no
obstructions near its air intake or air outlet.
• 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.
• Especially in windy areas, install the unit to prevent
the admission of wind.
• 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 sulfide gas.
• A place where high-frequency waves are likely to
be generated, such as from audio equipment,
welders, and medical equipment.
9-4-3. 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 [8] in the 2 elongated
holes on the base plate of the outdoor unit.
2) Install the water-proof rubber caps
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.
3) 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.)
65
Service Manual
Snow protection plate
Snow protection hood
Install at least 50 cm
above the snow
At least
accumulation line.
50 cm
Snow accumulation line
Holding frame
CAUTION
Strong
wind