English
8
4. PREPARATIONS BEFORE INSTALLATION
(1) Relation of ceiling opening to unit and suspension bolt position. (Unit: mm)
A
950 (Decoration panel)
860 – 910 (Ceiling opening)
840 (Indoor unit)
780 (Suspension bolt pitch)
950 (Decoration panel)
860 – 910 (Ceiling opening)
840 (Indoor unit)
710(Suspension bolt pitch)
Refrigerant
piping
Suspension
bolt (×4)
False
ceiling
View as seen from
A
Fig. 6
Hanger
bracket
125 – 130
Fig. 5
CAUTION
Reduce the distance between the unit and ceiling to 35 mm or below in order to maintain an overlapping
panel margin of 20 mm for the opening on the ceiling. If the distance exceeds 35 mm, attach a ceiling
material to the part marked
or replace the ceiling (see Fig. 7).
(Ceiling opening dimension) (Ceiling-panel overlapping dimension)
Fig. 7
(2) Make the ceiling opening needed for installation where applicable.
(For existing ceilings)
• Refer to the paper pattern for installation (5) for ceiling opening dimensions.
•
Create the ceiling opening required for installation. From the side of the opening to the casing outlet,
implement the refrigerant and drain piping and wiring for remote controller (unnecessary for wireless
type) and indoor-outdoor unit casing outlet. Refer to “6. REFRIGERANT PIPING WORK”, “7. DRAIN
PIPING WORK” and “8. ELECTRIC WIRING WORK”.
•
After making an opening in the ceiling, it may be necessary to reinforce ceiling beams to keep the
ceiling level and to prevent it from vibrating. Consult the builder for details.
(3) Install the suspension bolts.
<installation example>
Ceiling slab
Anchor
Long nut or turn-buckle
Suspension bolt
False ceiling
50 – 100
Fig. 8
Use a hole-in anchor for existing ceilings, and
a sunken insert, sunken anchor or other field
supplied parts for new ceilings to reinforce the
ceiling to bear the weight of the unit. Adjust
clearance (50 – 100mm) from the ceiling before
proceeding further.
NOTE
• All the above parts are field supplied.
Frame
Ceiling material
≥
35
≥
35
≥
20
≥
20