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SELECTING INSTALLATION SITE
Condensation may occur if the relative humidity within the ceiling is
beyond 80%, or if the unit intakes outside air whose temperature is
–5°C or below during heating. Install an emergency drain pan (field
supply) under the unit to prevent water leakage.
1 Select an installation site where the following conditions and
the customer's requirements are satisfied.
• Where optimum air distribution is available.
• Where nothing blocks air passage.
• Where condensate can be properly drained.
• Where the ceiling is strong enough to bear the indoor unit weight.
• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service can be
ensured. (Refer to Fig. 2)
• Where there is no risk of flammable gas leakage.
• The belt needs regular maintenance.
• Where piping between indoor and outdoor units is possible within
the allowable limit. (Refer to the installation manual for the out-
door unit.)
• The unit is not for use where silent operation is required.
Install the unit in a place such as an equipment room where noise
is not a problem.
• Install the inspection opening at the side of the control box for the
convenience of maintenance and inspection.
• Place the unit so that the outlet vent does not blow air directly on
occupants of the room.
• Do not install the air inlet of the air conditioner at places such as
factories and kitchens, where oil or dust may be taken in.
• Keep indoor unit, outdoor unit, power supply wiring and transmis-
sion wiring at least 1 meter away from televisions and radios. This
is to prevent image interference and noise in those electrical
appliances.
(Noise may be generated depending on the conditions under
which the electric wave is generated, even at the distance of
1 meter.)
2 Use suspension bolts for installation. Check whether the ceil-
ing is strong enough to support the weight of the unit or not. If
there is a risk of falling, reinforce the ceiling before installing
the unit.
3 When exposing the body of this unit, install the unit where the
bottom is more than 2.5 m high out of the customer's reach.
4 The air filter (field supply) must be installed within the duct.
(Refer to Fig. 3) A return air filter must be installed during the
operation of the air conditioner.
• Please choose an appropriate air filter according to the
actual conditions of the intake air; otherwise it may lead to
dirtiness, low performance or water leakage of the heat
exchanger.
English
Service
space
800 or more
Air outlet duct
Service space
500 or more
500 or more
Inspection hatch
( 450)
Fig. 2
Provide enough clearance between
the unit and the surrounding walls
to prevent contact.
Service cover 1(R)
Ceiling surface
Supporting plate
500 or more
(field supply)
For maintenance of control box, the
suspension bolts should be 500 mm
or more away from the unit.
Fig. 3
(Air inlet duct)
Air flow
passage
[Unit:mm]
Return air filter
(field supply)
[Unit:mm]
5
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