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4
Installation
REQUIREMENT
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. (Even units are packaged)
• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by necessity, be sure to
use buffering cloth, etc. to not damage the unit.
• To move the indoor unit, hold the hooking metals (4 positions) only.
Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, or resin parts, etc.).
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.
External view
(Unit:mm)
(mm)
Model MMU-
A
B
C
D
Model MMU-
A
B
C
D
Ceiling bottom
surface
Knockout square hole
for divide duct
For Ø150
Knockout square
hole for divide duct
For Ø150
840 Unit external dimension
Ceiling bottom surface
Electrical
control box
Refrigerant pipe
connecting port
(Liquid) B
Refrigerant pipe
connecting port
(Gas) C
Take-in port
of wires
Ceiling
bottom
surface
Drain pipe
connecting
port
Knockout square hole
for divide duct
For Ø150
Hanging bolt M10 or Ø3/8
(Locally procured)
Knockout square hole for divide duct
For Ø150
690 ± 20 Hanging bolt pitch
860 to 910 Ceiling opening dimension
950 Panel external dimension
Knockout square hole for humidifier
Ceiling panel (sold separately)
Ceiling bottom surface
Z view
Knockout for
simple OA
For Ø100
Ceiling bottom
surface
86
0 t
o
9
1
0 C
eilin
g
op
en
in
g d
im
ens
io
n
78
0 H
a
ng
in
g bo
lt pit
ch
950
Pan
el
ex
te
rn
al
di
me
ns
io
n
Opening a ceiling and
installation of hanging bolts
• Consider the piping / wiring after the unit is hung
when determining the location of the indoor unit
installation and orientation.
• After the location of the indoor unit installation has
been determined, open the ceiling and install
hanging bolts.
• The dimensions of the ceiling opening and hanging
bolt pitches are given in the outline drawing and the
attached installation pattern.
• When a ceiling already exists, lay the drain pipe,
refrigerant pipe, indoor unit / outdoor unit connection
wires, and remote controller wires to their connection
locations before hanging the indoor unit.
Procure hanging bolts and nuts for installing the indoor
unit (these are not supplied).
◆
Using the installation pattern
(accessory)
The installation pattern is provided inside the
packaging cap.
<For existing ceiling>
Use the installation pattern positioning a ceiling
opening and hanging bolts.
<For new ceiling>
Use the installation pattern to position the ceiling
opening when hanging a ceiling.
• After the hanging bolts have been installed, install
the indoor unit.
• Hook the four holes in the installation pattern to the
panel fixing screws of the indoor unit.
• When hanging a ceiling, open the ceiling along the
outside dimensions of the installation pattern.
◆
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.
1. Cut and remove the ceiling foundation.
2. Reinforce the cut surface of ceiling foundation, and
add ceiling foundation for fixing the end of ceiling
board.
◆
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.
Hanging bolt
M10 or W3/8
4 pieces
Nut
M10 or W3/8
12 pieces
Indoor unit
Panel fixing
screw
Installation pattern (Accessory)
Hole
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
(Blade type
bracket)
(Slide type
bracket)
(Pipe hanging
anchor bolt)
Hanging bolt
Hanging bolt Support angle
UP009 to UP012
256
Ø6.4
Ø9.5
120
UP024 to UP030
256
Ø9.5
Ø15.9
120
UP015 to UP018
256
Ø6.4
Ø12.7
120
UP036 to P056
319
Ø9.5
Ø15.9
183
U
17-EN
18-EN
