Hitachi RAI-50PPD Manuel D'installation Et De Fonctionnement page 22

INDOOR UNIT INSTALLATION
8.3 INSTALLATION
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Opening of false ceiling and location of
suspension bolts
• Determine the final location and installation direction of
the indoor unit paying attention to the space for the piping,
wiring and maintenance.
• Then cut out the false ceiling for the indoor unit installation
and install suspension bolts, as shown below:
Dimension of opening: 576~590
Unit size: 570
Dimension of
suspension bolts: 530
Piping
connection side
connection side
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N O T E
• Ceiling work differs depending on the building structure. Consult with
a building constructor or an interior finish worker for more information.
• Do not install electric light and the indoor unit to the same furring
of the ceiling. Otherwise, electric lights may flicker or vibrate due to
indoor unit operation.
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Mounting of suspension bolts
• Strengthen the opening parts of the false ceiling. Using a
steel C-profile makes the work easier.
• Mount suspension bolts, as shown.
• Strengthen suspension bolts with support plates as required
in preparation for an earthquake. Suspension bolts and
support plates shall be M10 (field-supplied).
For concrete slab:
150 to 160mm
150 to 160mm
Steel
Steel
For steel beam:
I-Beam
12 PMML0477 rev.2 - 11/2017
(mm)
4-positions of
suspension bolts
Optional panel
Drain piping
Insert
Insert
(100 to 150kg)
(100 to 150kg)
Concrete
Concrete
Anchor Bolt Anchor bolt
(W3/8 or M10) (W3/8 or M10)
Suspension bolt
(W3/8 or M10)
For wooden beam:
Install the indoor unit to the tie beam (for single-storied building)
or to the second floor girder (for two-storied building), and use
sufficiently strong squared timber shown below.
Interval between beams
< 90 cm
< 180 cm
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Mounting indoor unit
1 Pattern board for installation and scale for dimension of
opening
a. For installation work, the pattern board is required. The
pattern board for installation and the checking scale are
printed on the back side of the packing.
b. Cut off the checking scale for dimension of opening from
the packing. The usage is shown in the item (5).
Checking scale for
dimension of opening
Packing
(Corrugated board)
2 Mounting position of the indoor unit
a. Check the mounting position of the indoor unit shown in
figure below:
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N O T E
The air panel (optional) may be deformed if the levelness of the indoor
unit and the position of the suspension brackets are incorrect, and dew
condensation may occur due to air leakage from the gap between the
indoor unit and the air panel.
Squared timber
6 square
9 square
Pattern board for
installation