Hitachi RCD-0.8FSN3 Installation And Operation Manual page 22

INDOOR UNIT INSTALLATION
14.3 INSTALLATION
14.3.1 Opening of False Ceiling and Location of
Suspension Bolts
1 Determine the final location and installation direction of
the indoor unit paying attention to the space for the piping,
wiring and maintenance.
2 Then cut out the false ceiling for the indoor unit installation
and install suspension bolts.
3 The position of suspension bolts is shown below:
Dimension of opening: a
20
Dimension of suspension bolts: b
4-Positions of suspension bolts
M10 or W3/8 (Field-supplied)
HP
(0.8-3.0)
(4.0-6.0)
14.3.2 Mounting Suspension Bolts
1 Strengthen the opening parts of the false ceiling. Using a
ductor makes the work easier.
2 Strengthen suspension bolts with support plates as required
in preparation for an earthquake. Suspension bolts and
support plates shall be M10 (field-supplied).
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
< 180
150 to 160mm
Steel
18 PMML0425A rev.0 - 02/2016 - P5415720
(mm)
20
Wiring connection side
Piping connection side
(Gas
76
piping)
Drain piping connection side
(Liquid
83
piping)
(Drain
65
piping)
Air panel
Hole 4-12 x 32 (For suspension)
a b
1060 910
1620 1470
Squared Timber
6 square
9 square
Insert
(100 to 150 kg)
Concrete
Anchor bolt
(W3/8 or M10)
14.3.3 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.
Checking scale for
dimension of opening
Packing (Corrugated
Board)
2 Mounting Position of the Indoor Unit
?
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.
Check the mounting position and the positional relation
between indoor unit and the air panel in the following figure.
Refrigerant gas pipe connection
Refrigerant liquid pipe connection
Drain pipe connection
Power supply wire
connection
(φ26)
Control cable /
Remote controller cable connection
(φ26)
(cm)
Pattern Board
for Installation
359
(mm)
291
Access Door
211
59 218
Surface of ceiling