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3. INSTALLATION WORK
Correct initial installation location is important because it is difficult to move unit after it is
installed.
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
CAUTION
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, caus-
ing 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.
Take precautions to prevent the unit from falling.
(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) Install the unit where connection to the outdoor unit (or RB unit) is easy.
(5) Install the unit where the connection pipe can be easily installed.
(6) Install the unit where the drain pipe can be easily installed.
(7) Install the unit where noise and vibrations are not amplified.
(8) Take servicing, etc., into consideration and leave the spaces. Also install the unit
where the filter can be removed.
(9) Do not install the unit where it will be exposed to direct sunlight.
3.2. Installation dimensions
Floor console
12 (300) or more
Left Right
Unit: in (mm)
12 (300) or more
Under ceiling
Ceiling
Ceiling
Indoor unit
Left
6 (150)
or more
12 (300)
or more
91 (2300)
or more
Unit: in
(mm)
Floor
1 (20) or more
Right
3.3. Installing the unit
WARNING
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.
3.3.1. Preparing indoor unit installation
Open the intake grille and remove
the 3 screws.
Remark:
The main unit can be wired before
the indoor unit is installed.
Select the most appropriate instal-
lation order.
Machine screw
Tapping screw
Tapping
screw
Intake
grille
3.3.2. Indoor unit installation
A. Floor console type
Drilling for piping
Select piping and drain
directions.
The piping and drain can
be made in 3 directions as
following figure.
For direction
, bore the
oval hole shown in the
following figure.
VIEW
Hole
The drain hose can be
connected to either the left
or right side.
Drain hose
(right side)
Drain hose
(left side)
When the directions are selected, drill a
3-15/16 in (100 mm) dia. hole on the wall so
that the hole is tilted downward toward the
outdoor for smooth water flow.
When the pipe is led out from the rear,
make a hole as shown in the figure, at the
position shown.
Unit: in (mm)
1/4 (6)
3-15/16 (100)
Wall
Indoor side Outdoor side
When installing set to wall install the accessory wall bracket at the position as following
figure, and mount the set to it.
Wall bracket
Unit: in (mm)
Side of set
39 (990)
19-11/16 (500)
2-9/16
(65)
25-13/16 (655)
20-7/8 (530)
1-3/4 (45)
2-9/16 (65)
Ø1-15/16
(50)
4-15/16 (125) 3-15/16 (100)
Ø3-15/16
(100)
9-5/8
(245)
B. Under ceiling type
Using the installation
template, drill holes for
piping and suspension
bolts (for holes).
Unit: in (mm)
Installation
template
(accessories)
7-7/8
(200)
Drilling position
for suspension
bolt
Ceiling
Wall
Drilling position for piping
35-7/16 (900)
9367701162-02_IM.indb Sec1:39367701162-02_IM.indb Sec1:3 27/09/2019 09:32:5627/09/2019 09:32:56
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