En-3
3. INSTALLATION WORK
3.1 Selecting an installation location
Correct initial installation location is important because it is dif
fi
cult to move unit after it is
installed.
WARNING
Select installation locations that can properly support the weight of the indoor. Install the
units securely so that they do not topple or fall.
CAUTION
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
fi
lled 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
fi
bers or
fl
ammable dust, or volatile in
fl
ammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a
fi
re.
• 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
fl
ammable 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.
Provide protection against toppling of the unit. Toppling of the unit will cause injury or
physical damage.
If the cooling operation is performed in a high temperature and high humidity environment,
condensation may occur on the surface of the indoor unit. Dripping of condensation will
cause physical damage. When the occurrence of condensation is expected, cover the
indoor unit with heat insulation material or provide enough installation space so that the
addition of a secondary drain pan or other protection measures can be taken.
Decide the mounting position with the customer as follows:
(1) Install the indoor unit on a place having a suf
fi
cient 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 ampli
fi
ed.
(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit where
the
fi
lter can be removed.
3.2 Installation dimensions
Provide a service access for inspection purposes.
Do not place any wiring or illumination in the service space, as they will impede service.
Minimum clearance dimensions [in (mm)]
AR12/18/24
AR30/36
AR48/60
Power entry
A1
3.0 (76)
3.0 (76)
3.0 (76)
A2
6.0 (152)
6.0 (152)
6.0 (152)
Controls entry
B1
3.0 (76)
3.0 (76)
3.0 (76)
B2
6.0 (152)
6.0 (152)
6.0 (152)
If side access is required
A3/B3
6.0 (152)
6.0 (152)
6.0 (152)
Rear clearance
C
2.0 (51)
2.0 (51)
2.0 (51)
Electrical/Blower service
D
36.0 (914)
36.0 (914)
36.0 (914)
Coil service
E
36.0 (914)
36.0 (914)
36.0 (914)
Filter service
F
36.0 (914)
36.0 (914)
36.0 (914)
Condensate drain trap
G
3.0 (76)
3.0 (76)
3.0 (76)
D
C
A3
B3
A2/B2
A1
B1
E
F
G
Top view
Front view
Right side view
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.
CAUTION
Con
fi
rm 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. Unit
dimensions
Unit dimensions [in (mm)]
AR12
AR18/24
AR30/36
AR48/60
Height
A
51.0 (1295)
51.0 (1295)
57.5 (1461)
Width
B
17.7 (450)
22.2 (564)
25.1 (638)
Depth
C
23.8 (605)
23.8 (605)
23.8 (605)
Discharge
duct
D
4.2 (107)
2.0 (51)
1.9 (48)
1.8 (4.6)
E
6.9 (175)
8.2 (208)
11.8 (300)
12.2 (310)
F
10.2 (259)
12.5 (318)
12.5 (318)
13.5 (343)
Electrical
connecting
holes
G
4.3 (109)
4.5 (114)
4.6 (117)
H
3.0 (76)
2.8 (71)
2.8 (71)
I
21.0 (533)
18.8 (478)
18.8 (478)
J
6.1 (155)
4.7 (119)
4.1 (104)
K
5.5 (140)
12.7 (323)
17.0 (432)
Coil
connection
L
0.5 (12.70)
0.625 (15.88)
0.625 (15.88)/
0.75 (19.05)
0.75 (19.05)
M
5.3 (135)
4.9 (124)
5.0 (127)
N
5.6 (142)
5.2 (132)
5.3 (135)
O
13.9 (353)
13.5 (343)
13.0 (330)
13.2 (335)
P
0.25 (6.35)
0.375 (9.52)
0.375 (9.52)
0.375 (9.52)
Q
15.9 (404)
15.5 (394)
16.4 (417)/
15.5 (394)
16.1 (409)
R
3.7 (94)
3.2 (81)
2.7 (69)
2.9 (74)
S
4.4 (112)
3.5 (89)
3.2 (81)
U
3.2 (81)
3.6 (91)/
4.6(117)
4.2 (107)
V
6.0 (152)
5.2 (132)
4.9 (125)
Air intake port
W
15.0 (381)
18.9 (480)
20.0 (508)
X
21.7 (551)
21.7 (551)
21.4 (544)
