Hitachi RPI-16.0FSN3PE Manuel D'installation Et De Fonctionnement page 9

3 Units installation
Suction Air Filter Servicing

Filter maintenance could be performed from right or left side of the unit.
Remove filter support (x2 screws / each support) and pull out the filter from the handle.
In those installations where the servicing space is narrow, the filter could be bent (in three pieces) when pulling it out.
3.1.3 Fan Performance Curve
RPI-16.0FSN3PE
100
Fan Speed Static Pressure
HSP (Std. Factory Setting)
LSP
N O T E
When design a duct, check to ensure that the Air volume is within working range as indicate "Fan Performance Curve".
•
If the Air volume is set outside working range, water-carry-over (drop in the ceiling or into the room), noise increases, fan motor
•
damaged (high temperature), insufficient Cooling/Heating capacity, phenomena can occur.
• Therefore design ducts and select the correct fan speed in order to keep the unit running in the accepted working range.
3.1.4 Static Pressure Setting
RPI units have been provided by two static pressure levels regulation depending on the installation requirements:
High static pressure (Std. Factory Setting) and low static pressure connectors are available into the Electrical Box.
Setting of static pressure shall be made by changing the Fan Unit connector.
C A U T I O N
The static pressure setting must be the same in both units.(There are 2 Electrical boxes, so connector change must be made in both
of them).
5 PMML0323A rev.2 - 06/2014
Air Filter Support Remo-
ving Direction
Air Filter
120 140 160
Airflow (m
3
/min)
Med
Hi Low
v1 v1
v2 v2
120
HSP: High Static Pressure
LSP: Low Static Pressure
v3
v4
RPI-20.0FSN3PE
140 160 180
Airflow (m
3
/min)