Hitachi RPIM Serie Manual De Instalación página 9

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2.1.3. 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.
RPIM-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).
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
Air Flow
Fig.2
Air Flow
Suction Air Filter Servicing
Remove the stay support (2 screws) from the unit and pull
down the Air Filter.
Air Filter Support
removing direction
2.1.4. AIR SUCTION DIRECTION CHANGE
RPIM units, Air Suction direction can be modified by
changing Back Cover direction as shown in the diagram.
Front Cover
Back Cover
Std. Air Filter
(Factory-supplied)
Air Flow
Air Filter
(Factory-supplied or
adapted factory one)
Air Flow
Air Filter
Air sucction direction
factory supplied.
Remove Front cover,
back cover and E-Box
from the unit.
E-Box
UNITS INSTALLATION
2.1.5. FAN PERFORMANCE CURVE
RPIM-0.8/1.0
Fan Speed
Static
(RCS)
Pressure setting
SP-01
SP-00 (*)
SP-02
(*): Factory Setting
Air Flow (m3/min)
RPIM-1.5
Fan Speed
Static
(RCS)
Pressure setting
SP-01
SP-00 (*)
SP-02
(*): Factory Setting
Air Flow (m3/min)
2
3
Swap Front cover and
Back cover position.
Change E-box
direction as shown in
the figure.
Optional Air sucction
direction al bottom
side.
Hi
Med
Low
V2
V3
V3
V3
V3
V4
V3
V3
V4
NOTE:
"•": Nominal Point
"*": Std Suction Filte
V
: Motor fan
(2/3/4)
Speed
Hi
Med
Low
V1
V2
V2
V2
V2
V3
V2
V2
V3
NOTE:
"•": Nominal Point
"*": Std Suction Filte
V
: Motor fan
(1/2/3)
Speed
loading