Hitachi FSG Series, Technical Catalogue

Page: 24 / 424

1
/10
SYSTEM DESCRIPTION
1.2.4 RPI – IN-THE-CEILING TYPE
0.8HP ~ 1,5HP
2.0HP ~ 5.0HP
n
New Solid Structure and reduced dimensions
New RPI design is giving more solid, reinforced structure
to the unit and improving rigidity when it is suspended.
The unit has reduced dimensions requesting field shorter
for installation and it has the lowest height in the market.
n
Quiet Operation
A precision-balanced fan provides quiet and efficient
operation.
Sound Level (dB A)
Models
STD SP HSP LSP
RPI-0.8 41 – –
RPI-1.0 41 – –
RPI-1.5 45 – –
RPI-2.0 42 44 35
RPI-2.5 44 47 39
RPI-3.0 45 48 41
RPI-4.0 48 50 44
RPI-5.0 50 52 48
n
New Fan Unit with three static pressure levels
The unit is set at static pressure for normal operations as
standard (STD SP).The High Static pressure (HSP) is
available for long ducts installation giving the possibility to
acurate the air flow distribution in the building.
And it is giving additional advantage of the new low static
pressure (LSP) option for extra short duct.
Actual noise levels in the field can be decreased taking
advantage of the static pressure selectionability, and all
fan speed levels: High, Medium & Low are available.
n
Drain pump as standard
All unit range, from 0.8HP to 5.0HP, are equipped with an
internal Drain pump, that remove the accumulated
condensation from the drain pump even while the cooling
operation is in progress.
An electronic sensor monitors the water level and
automatically activates the pump when draining becomes
necessary.
This easy to service unit is equiped with transparent
ductled drain pipe in order to improve the commissioning
process.
Example: (2.0HP to 5.0HP)
n
Suction filter as STD accessory
New RPI unit is already equipped with filter as standard
accessories that can be used in cases that suction unit is
accessible because of not suction duct is used or it is
very short.
See subchapter 12.4 for more information
In case that suction duct is very long, the same filter can
be installed in the suction false ceiling filter. The new
incorporade standard filter is giving more advantages and
facilities for duct type units installation.
n
Air suction direction change
(only for 2.0HP to 5.0HP)
Air suction direction could be modified changing back
cover (2) for fan cover (1).
Transparent Ducted Drain Pipe
Standard Air Filter
(Factory supplied)
Outlet Air Flow
Back Suction Bottom Suction