Hitachi RCIM-1.0FSN4 Installations- Und Betriebshandbuch Seite 31

Indoor Unit Installation
b. For false ceiling without opening
If there is no opening in the existing false ceiling, provide
an opening in it before mounting the indoor unit. Cut out
the false ceiling. After hooking up the indoor unit, adjust
the position according to the procedure (a).
Dimension of opening
5
Surface
of flange
Electrical box
6 Tighten two nuts of each suspension bolt after the
adjustment is completed. Apply LOCK-TIGHT paint to the
suspension bolts and nuts in order to prevent them from
loosening. Adjust the indoor unit to the correct position,
using the checking scale.
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N O T E
While adjusting the space between the indoor unit and the ceiling
surface, keep the indoor unit level. Otherwise, it may cause a
malfunction of the float switch. Check the levelness of the unit with
a level.
Vinyl tube
Check the levelness at each corner (•) of the unit with a
level or by pouring water to the clear vinyl tube as shown in
the figure. Make the corner at the drain pipe side 1 to 3mm
lower.
21 PMML0363A rev.2 - 08/2016 - P5416559
576~590
570
5
Indoor unit
Corrugated board
Drain pipe
Level
7 The upper surface of the unit is protected by corrugated
cardboard to prevent the unit from being damaged by
spatter, etc. When mounting the air panel (optional), check
to ensure that welding around the unit has been finished
before removing the corrugated cardboard.
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Installation of air panel
Refer to "17 Installation of optional air panel:
1 Check the distance between the indoor unit and the false
+3
ceiling. It is 16 mm as shown in the figure. If not, adjust the
0
distance by using the checking scale with maintaining the
levelness of the indoor unit.
2 Check that the fixing screws for the panel are tightened.
Tighten the fixing screws for the panel until touching the
stopper to the suspension bracket.
?
N O T E
Pay attention to the distance between the indoor unit and the false
ceiling. If it is 19mm or more, it may cause dew condensation by
leaking air from the seal packing (Field-Supplied).
3 Check the indoor unit height from the false ceiling surface.
For air panel P-AP56WAM
Ceiling surface
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Installation of remote control switch
For details on installation of the remote control switch, refer to
Installation and Operation Manual of the product.
P-AP56NAM".
Indoor unit
3