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accessory with the grille), make an opening in the ceiling so that the main unit can
be installed as shown in the diagram. (The method for using the template and the
gauge is shown.)
* Before using, check the dimensions of template and gauge, because they
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* The dimensions of ceiling opening can be regulated within the range shown in
Fig. 2-2; so center the main unit against the opening of ceiling, ensuring that the
respective opposite sides on all sides of the clearance between them becomes
identical.
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A
Outer side of main unit
E
Grille
B
Bolt pitch
F
Ceiling
C
Ceiling opening
G
Multi function casement (option)
D
Outer side of Grille
H
Entire periphery
* Note that the space between ceiling panel of the unit and ceiling slab and etc must be 10
to 15 mm.
* When the optional multi-functional casement is installed, add 135 mm to the
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(mm)
Models
C
D
241
100, 125
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At the time of installation, use the duct holes (cut out) located at the positions shown
in Fig. 2-3, as and when required.
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Note:
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A
Branch duct hole
I
ø175 burring hole pitch
B
Indoor unit
J
Fresh air intake hole diagram
C
Fresh air intake hole
K
¡EXUULQJKROH
D
Drain pipe
L
ø125 burring hole pitch
E
Refrigerant pipe
M
ø100 cut out hole
F
Branch duct hole diagram
(view from either side)
N
Ceiling
O
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G
¡EXUULQJKROH
P
Insulator
H
ø150 cut out hole
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constructors and interior decorators should be consulted for details.
(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and the
ceiling foundation (framework: wooden slats and slat holders) must be reinforced
in order to protect the ceiling from vibration.
(2) Cut and remove the ceiling foundation.
(3) Reinforce the ends of the ceiling foundation where it has been cut and add ceiling
foundation for securing the ends of the ceiling board.
(4) When installing the indoor unit on a slanted ceiling, attach a pillar between the
ceiling and the grille and set so that the unit is installed horizontally.
1
Wooden structures
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as reinforcing members.
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be at least 6 cm long if the beams are separated by not more than 90 cm and their
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with the unit.)
2
Ferro-concrete structures
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hangers, etc. to install the suspension bolts.
Fig. 2-2
150
160
160
160
160
90
860-910
C
20-45
(7.5)
(7.5)
20-45
20-45
20-45
810
B
950
D
187.5
840
A
840
A
135
17
+5 0
17
+5 0
*
50
-70
*
105
35
C
D
Min. 2500
Min. 1500
860-910
C
950
D
620
G
E
F
E
F
H
+35 -5
605
B
Fig. 2-3
#
"
350
90
70°
100
100
90
100
130
*155
*167
*158
120°
120°
!
605
810
Unit
Grille
Pillar
Ceiling
Rafter
Beam
Roof beam
Use inserts rated at 100-150kg each
(procure
locally)
Suspension bolts M10 (3/8")
(procure
locally)
Steel reinforcing rod
Fig. 2-4
