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4. INSTALLATION WORK
Do not turn on the power until all installation work is complete.
Carrying and installation of the unit should be performed by a sufficient number of
people and with sufficient equipment that is adequate for the weight of the unit.
Performing such work with an insufficient number of people or with inadequate equip-
ment could result in dropping of the unit or personal injury.
For installation details, refer to the technical data.
4.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
Select installation locations that can properly support the weight of the indoor 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.
Install the units securely so that they do not topple or fall.
Do not install the indoor unit in the following areas:
• Area with high salt content, such as at the seaside.
It will deteriorate metal parts, causing the parts to fall 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 fall 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 inflammables 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, outdoor unit, power supply cable, connection cable, and remote
control cable at least 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 1 m apart, you could still receive noise under
some signal conditions.)
Install the unit where ambient temperature does not reach 60°C or more.
Take a measure such as ventilation for an environment in which heat is retained.
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
(1) The inlet and outlet ports should not be obstructed; the air should be able to blow all
over the room.
(2) Leave the space required to service the air conditioner.
(3) Install the unit where connection to the outdoor unit is easy.
(4) Install the unit where the connection pipe can be easily installed.
(5) Install the unit where the drain pipe can be easily installed.
(6) Install the unit where noise and vibrations are not amplified.
(7) Take servicing, etc., into consideration and leave the spaces. Also install the unit where
the filter can be removed.
(8) Do not install the unit where it will be exposed to direct sunlight.
Correct initial installation location is important because it is difficult to move unit after it is
installed.
En-4
WARNING
CAUTION
WARNING
CAUTION
4.2. Installation dimension
Install at least 20mm from the ceiling.
2500 or more
(When no
ceiling)
Floor
(For maintenance)
(1) Maintenance work of the control box is possible with the maintenance hole of the
measurement shown in the figure.
(2) If maintenance work is to be done from the bottom side, the maintenance hole 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
500 mm between the indoor unit and ceiling.
Control box
Maintenance hole
4.3. Installing the unit
Carrying and installation of the unit should be performed by a sufficient number of
people and with sufficient equipment that is adequate for the weight of the unit. Per-
forming such work with an insufficient number of people or with inadequate equipment
could result in dropping of the unit or personal injury.
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
When fastening the hangers, make the bolt positions uniform.
Confirm the directions of the air intake and outlet before installing the unit.
The unit takes in air from the fan side, and expels it from the evaporator side.
Check that duct work does not exceed the range of external static pressure of equip-
ment.
Make sure to insulate ducts to avoid the dew condensation.
Make sure to insulate between ducts and walls if metal ducts are used.
Please explain handling and washing methods of locally purchased materials to the
customer.
To prevent people from touching the parts inside the unit, be sure to install grilles on
the inlet and outlet ports. The grilles must be designed in such a way that cannot be
removed without tools.
When connecting the duct to the outlet port of the indoor unit, be sure to insulate the
outlet port and the installation screws to prevent water from leaking around the port.
RECOMMENDED RANGE OF
EXTERNAL STATIC PRESSURE [Pa]
450
(Service space)
Unit : mm
450
500
Unit : mm
WARNING
CAUTION
100 - 250
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