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Hitachi RPIL-0.4FSRE Installations- Und Betriebshandbuch Seite 36

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INDOOR UNITS INSTALLATION

Nut pre-assembly prior to leveling unit
Nut (field-supplied)
Washer with insulation (accessory)
Suspension bracket
(attached indoor unit)
Washer (accessory)
Nut (field-supplied)
Sling bolt (field-supplied)
Surface of ceiling

Suspend the indoor unit using the following steps
1 Hook suspension bracket to the nut and washer of each
sling bolt, as shown, starting from one side.
2 Check the nut and washer are correctly fixes by the retainers
of the suspension bracket.
3 Hook the suspension bracket of the other side to nut and
washer.
Nut
Washer with insulation
Suspension bracket
Washer
Nut
Sling bolt
?
N O T E
Make sure to use washers (accessories) for fixing the suspension bolts to
the suspension brackets. The washer with insulation must be fitted with
the insulation side downward to facilitate hanging work.
4.3.2 Duct & suction air filter installation

Field Supply Duct installation
Fix the Flexible Air Duct to External Faces of unit flanges (the
unit is equipped with factory supply flanges for this purpose).
It is recommended to use a Flexible field supply Duct portion in
order to avoid any abnormal sound vibration.
Insulate frame corners by using properly tape, field supplied.
RPIL units are equiped with standard Air Filter at the suction
side. This filter is provided for the cases in which no Suction
Duct is applied (or it is very short).
6
PMML0527 rev.1 - 02/2021
It is recommended the following indications depending on the
installation.
Keep the standard Air Filter in case of no Suction Duct is
applied (fig. 1).
In case of applying Suction Duct, it is recommended to apply
Air Filter at the inlet point of Suction Duct, removing the
standard Air Filter of the unit (fig. 2).
Fig. 1
Std. Air filter
(Factory supplied)
Fig. 2
Air filter (Field supplied or
adapted factory supplied)

Suction Air Filter Servicing
There are two options for filter extraction, depending on the
location of the unit:
Inlet air
Lower extraction:
a. Turn 90° the fixing screw and remove the lower Air Filter
support from the unit.
b. Pull down the Air Filter.
Fixing screw
Air flow
Air flow
Air Filter
Air Filter
Support

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