Installation Of Outdoor Unit - Toshiba RAS-M18UAV-E Installation Manual

5 INSTALLATION OF OUTDOOR UNIT

Installation location
• 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 neighbors.
• 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.
• If the outdoor unit is to be mounted on a wall, make sure the platform supporting it
is sturdy enough.
• The base plate should be designed and manufactured to maintain its strength over
a long period of time, and sufficient consideration should be given to ensuring that
the outdoor unit will not fall.
• When the outdoor unit is to be mounted high on a wall, take particular care to
ensure that parts do not fall, and that the installer is protected.
• When doing installation work at ground level, it is usual to make wiring and pipe
connections to the indoor units, first, and then to make connections to the outdoor
units.
However, if outdoor work is difficult it is possible, instead, to make changes to the
procedure.
For example, by making adjustments to the wiring and piping lengths on the inside
(rather than the outside).
• A place where the drain water does not cause any problems.
• 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.
Necessary space for installation
NOTE: For installation, at least 3 sides should be kept away from obstacles (walls).
80 mm or more only
when unobstructed to
the front and both sides
In principle,
leave open
(C)
100 mm or more
from wall
200 mm or more
(B)
When installing the
outdoor unit, leave open in
at least two of directions
(A), (B), (C) and (D)
shown in the right figure.
Ensure sufficient space
to allow drainage
50 mm or more
from wall
As shown in the
figure, position
power cord and
(D)
connecting
cable
downward, and
lead out along
piping
connection port.
(A)
250 mm or
more from wall
Power cord
Extension drain hose
Draining off the water from the outdoor unit
• If it is necessary to drain off the water from the outdoor unit, install two water-
proofing rubber caps and a drain nipple.
Precautions about installation in regions with snowfall and
cold temperatures
• Do not use the water-proofing rubber cap and drain nipple.
• If there is a danger that the drain water might freeze, take steps to ensure that the
water will drain off in the most efficient manner.
• To protect the outdoor unit from snow accumulation, install a holding frame, and
attach a snow protection hood and plate.
• Install at least 500 mm above the snow accumulation line.
Front
Anchor
bolts
Fixing the outdoor unit
• Secure the outdoor unit with the anchor bolts.
• Use 8 mm or 10 mm anchor bolts and nuts.
• Set the out margin of the anchor bolt to 15 mm or less.
• Install the outdoor unit so that it is level.
• Install the foundation and vibration-proof rubber pads to directly support the bottom
surface of the fixing leg.
Suction side
Elongated
drain hole
Diffuser
GOOD
Fixing leg
Foundation
NO GOOD
If only the end of the
fixing leg is supported,
it may deform.
Foundation
4
Water-proofing rubber
caps (supplied with the
outdoor unit)
Base plate
Drain nipple
Snow protection plate
Snow protection hood
At least
500 mm
Snow accumulation line
Holding frame
Drain hole
Absorb vibration with vibration-proof
rubber pads
GOOD
Foundation
Support the bottom surface of the fixing
leg that is in contact with and
underneath the bottom plate of the
outdoor unit.
Do not support the outdoor unit only
with the fixing leg.
15 or less
Bottom plate
of outdoor unit
EN