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2. Installing the indoor unit
25/32 to 1-25/32
32-27/32 to 35-13/16 C
5-11/16
7-19/32
8-3/4
G
F
E
Fig. 2-2
F
D
2-3/8
10-11/16
14-1/16
E
C
Fig. 2-3
A
C
B
1
F G
D
E
D Ceiling
E Rafter
F Beam
G Roof beam
Fig. 2-4
37-3/8 D
25/32 to
1-25/32
31-5/16 B
5-11/16
33-1/16 A
E
F
Min. 19-11/16
H
Floor
A
Models
C
B
(E)P08-18
3
(E)P24-48
3-1/32
A Main unit
B Grille
C Pillar
2
J
H
I
H Use inserts rated at 100-150 kg, 221-
331 lbs each (procure locally)
I Suspension bolts M10 (3/8") (procure
locally)
J Steel reinforcing rod
2.2. Ceiling openings and suspension bolt installation
(inch)
locations (Fig. 2-2)
Caution:
Install the indoor unit at least 2.4 m, 94-1/2 inch above floor or grade level.
For appliances not accessible to the general public.
• Using the installation template (top of the package) and the gauge (supplied as an
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
change due to fluctuations of temperature and humidity.
* 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.
• Use M10 (3/8") suspension bolts.
* Suspension bolts are to be procured at the field.
• Install securely, ensuring that there is no clearance between the ceiling panel &
grille, and between the main unit & grille.
A Outer side of main unit
B Bolt pitch
C Ceiling opening
D Outer side of Grille
* Note that the space between ceiling panel of the unit and ceiling slab, etc. must be
10 to 15 mm, 25/64 to 19/32 inch.
* When the optional multi-functional casement is installed, add 135 mm, 5-5/16 inch
to the dimensions marked on the figure.
Models
EP08-18
241, 9-1/2
P08-30
EP24-48
281, 11-1/16
P36-48
2.3. Refrigerant and drainage piping locations of in-
door unit
The figure marked with * in the drawing represent the dimensions of the main unit
excluding those of the optional multi function casement. (Fig. 2-3)
A Drain pipe
B Ceiling
C Grille
D Refrigerant pipe (liquid)
(inch)
E Refrigerant pipe (gas)
F Main unit
D
* When the optional multi-functional casement is installed, add 135 mm, 5-5/16 inch
3-1/32
to the dimensions marked on the figure.
2.4. Suspension structure (Give site of suspension
(inch)
strong structure) (Fig. 2-4)
• The ceiling work differs according to the construction of the building. Building con-
structors 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.
Wooden structures
1
• Use tie beams (single storied houses) or second floor beams (2 story houses) as
reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their sides must
be at least 60 mm, 2-3/8 inch long if the beams are separated by not more than
900 mm, 35-7/16 inch and their sides must be at least 90 mm, 3-9/16 inch long if
the beams are separated by as much as 1800 mm, 70-7/18 inch. The size of the
suspension bolts should be ø10 (3/8"). (The bolts do not come with the unit.)
Ferro-concrete structures
2
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
E Grille
F Ceiling
G Multi function casement (option)
H Entire periphery
(mm, inch)
A
B
258, 10-3/16
298, 11-3/4
3
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