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Installation
4
CAUTION
Strictly comply with the following rules to prevent damage of the indoor units and human injury.
• Do not put a heavy article on the indoor unit or let a person get on it. (Even units are packaged)
• Carring the indoor unit as it is packaged if possible. If carring the indoor unit unpacked is necessary, use
buffering cloth or other material to not damage the unit.
• To move the indoor unit, hold the hooking brackets (4 positions) only.
Do not apply force to the other parts (such as refrigerant pipe, drain pan, foamed parts, or resin parts).
• Carry the package by four or more persons, and do not bundle it with plastic band at positions other than
specified.
• To install vibration isolation material to hanging bolts, confirm that it does not increase the unit vibration.
External dimensions
(Unit: in (mm))
Hanging bolt pitch B
Main unit dimension A
External dimensions of flange C
C
L
D
10.9"(275)
7.1" (180)
29.5"(750)
Hanging bolt pitch 25.6"(650)
0.9"(22)
2.0"(50)
2.0"(50)
13.6"(345)
13.6"(345) or more
2.8"(70) or more
1.7" (43) 4.5"
(1
13.5) 5.2" (131)
9.3" (236)
Access panel
Drain pan / Drain
pump check cover
7.4"
(187.5)
14.0"(355)
16.3"(415)
22.4"(570)
1.0"(25)
Electrical
control box
Dimension
Model
A
B
C
D
SM122, SM182
27.6"(700)
30.1"(765)
25.2"(640)
29.5"(750)
SM242
39.4"(1000)
41.9"(1065)
37.0"(940)
41.3"(1050)
SM302, SM362
SM422, SM482
55.2"(1400)
57.7"(1465)
52.8"(1340)
57.1"(1450)
Installation of hanging bolt
• When determining the location of the indoor unit,
consider the piping and wiring connection
• After the location of the indoor unit installation has
been determined, install hanging bolts.
• For the dimensions of the hanging bolt pitches, refer
to the external view.
• When a ceiling already exists, lay the drain pipe,
refrigerant pipe, control wires, and remote controller
wires to their connection locations before hanging
the indoor unit.
Procure hanging bolts washer and nuts for installing
the indoor unit (these are not supplied).
Hanging bolt
M10 or W3/8"
4 pieces
Nut
M10 or W3/8"
12 pieces
Washer
M10
8 pieces
Installation of hanging bolt
Use M10 hanging bolts (4 pcs, locally procured).
Matching to the existing structure, set pitch according
to size in the unit external view as shown below.
New concrete slab
Install the bolts with insert brackets or anchor bolts.
Steel flame structure
Use existing angles or install new support angles.
Existing concrete slab
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.
Rubber
Anchor bolt
(Pipe hanging
anchor bolt)
(Slide type
bracket)
(Blade type
bracket)
Hanging bolt
Support angle
Hanging bolt
Installation of indoor unit
Treatment of ceiling
The ceiling differs according to structure of building.
For details, consult your constructor or interior finish
contractor.
In the process after the ceiling board has been
removed, it is important to reinforce ceiling foundation
(frame) and to keep horizontal level of installed ceiling
correctly in order to prevent vibration of ceiling board.
• Attach the nuts and the M10 flat washers to the
hanging bolt.
• Put washers above and below of the hanging bracket
of the indoor unit to hang the indoor unit.
• Check that four sides are horizontal with a level
gauge. (Horizontal degree: Within 0.2"(5 mm))
Hanging bolt
(W3/8" or M10)
Nut
(W3/8" or M10)
Nut
(W3/8" or M10)
M10 flat washer
M10 flat washer
REQUIREMENT
• Hang the unit in a horizontal position.
When unit is hanged slanted, it may cause the
drainage to over flow.
• Install the unit within the dimension according to
the figure below.
• Use level gauge to confirm whether the unit is
hang horizontally.
Set the drain pipe connecting
port side within 0.2" (5 mm)
lower than opposite side.
Front view
0 to 0.2" (5 mm)
Side view
Set the air intake and air
discharge sides are within with
0.2" (5 mm) each other.
± 0.2" (5 mm)
5.4"
(136)
Ø4.9"(125) knockout hole
For Auxiliary fresh air taking
(Sold separately)
6.7"(170)
Refrigerant pipe
connecting port (Liquid side Ø 1/4" (6.4))
Refrigerant pipe
connecting port (Gas side Ø 1/2" (12.7))
Drain pipe
connecting port
4.3"
(108)
25.6"(650)
22.4"(570)
14.0"(355)
13.6"(345)
9.1"(233)
0.8"(20)
0.8"(20)
1.5"(37)
9.2"(233)
9.1"(232)
0.7"(18)
Air fow direction
Air
discharge
17-EN
18-EN
1128950138-00_S01_297x210_96p_S_p70_220212.indd 10
3/23/2022 8:10:11 AM
Outer dia. :
Ø 1.3" (32)
