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3. INSTALLATION WORK
3.1. Selecting an installation location
Correct initial installation location is important because it is difficult to move unit after it is
installed.
Select installation locations that can properly support the weight of the indoor. Install the
units securely so that they do not topple or fall.
Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside.
It will deteriorate metal parts, causing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen.
It will deteriorate plastic parts, causing the parts to fail or the unit to leak water.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali.
It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant
leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile flammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not use the unit for special purposes, such as storing food, raising animals, growing
plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or flammable gas.
Install the unit where drainage does not cause any trouble.
Install the indoor unit, power supply cable, transmission cable, and remote controller
cable at least 40 in (1 m) away from a television or radio receivers. The purpose of this
is to prevent TV reception interference or radio noise.
(Even if they are installed more than 40 in (1 m) apart, you could still receive noise
under some signal conditions.)
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
Decide the mounting position with the customer as follows:
(1) Install the indoor unit on a place having a sufficient strength so that it withstands
against the weight of the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(3) Leave the space required to service the air conditioner.
(4) A place from where the air can be distributed evenly throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit (or RB unit) is easy.
(6) Install the unit where the connection pipe can be easily installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibrations are not amplified.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
3.2. Installation dimensions
3.2.1. Installation by which service space is made on top of the
unit (recommended)
Install the unit away from the ceiling by 18 in (450 mm) or more.
18 (450)
or more
Unit: in (mm)
3.2.2. Installation by which service is carried out from the bottom
of the unit
1 (20)
or more
Unit: in (mm)
En-3
WARNING
CAUTION
18 (450)
or more
Service
space
Service access
Service
space
18 (450)
or more
Service access
3.2.3. (For maintenance)
(1) Maintenance work of the control box is possible with the service access of the mea-
surement shown in the figure.
(2) If maintenance work is to be done from the bottom side, the service access needs to
be larger than the outside dimension of the indoor unit.
(3) If maintenance work is to be done from the top, keep the space of the more than
18 in (450 mm) between the indoor unit and ceiling.
Service access size of 3.2.1
2 (30)
or more
58-11/16 (1490)
36 (890)
Indoor unit
or more
8 (200)
or more
AIR
Service access size of 3.2.2
Unit: in (mm)
3.3. Installing the unit
Install the air conditioner in a location which can withstand a load of at least 5 times the
weight of the main unit and which will not amplify sound or vibration. If the installation
location is not strong enough, the indoor unit may fall and cause injuries.
Confirm the directions of the air intake and outlet before installing the unit.
The unit takes in air from the evaporator side, and expels it from the fan side.
3.3.1. Conveyance method
• Leave the packing materials on until the unit is at the installation site.
• Remove the packing hardware and dispose of it.
• Be careful not to dispose the accessories.
• Unit is packed upside down.
Fan holder (2 locations)
Pull them out towards you.
Leave the packing materials on until the unit is at the installation site.
Remove the packing hardware and dispose of it.
20 (500)
or more
AIR
18 (450)
AIR
or more
Control box
WARNING
CAUTION
Accessories
Packing hardware
(4 locations)
28 (700)
or more
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