Hitachi RCI-1.0FSR Service Manual page 58

3 Electrical and control settings
Unit electrical wiring and connection
RPI-(16.0/20.0)FSN3PE(-f) Terminal board connections
Nº
PCB1 Printed circuit board 1
PCB2 Printed circuit board 2
TF Transformer
TB Terminal board
CB Circuit breaker
AR Auxiliary relay
Service panel for
electrical box
Wiring
holes
Test run
The fan motor in RPI-(8.0/10.0)FSN3E(-f) and RPI-(16.0/20.0)FSN3(-f)PE
units can be configured in two different ways:
• A: connector CN24 LSP (Low Static Pressure) (factory supplied setting);
• B: connector CN25 HSP (High Static Pressure).
!
C A U T I O N
Perform the connection with the same settings in both units that make up models
RPI-(16.0/20.0)FSN3E; otherwise malfunction may occur, causing damage to the units.
According to the Static Pressure setting (connector CN24 LSP (Low Static Pressure) or CN25 HSP (High Static
Pressure)) the fan speed available in the Remote Control Switch are the ones show as example in the following pictures.
• Example for RPI-(8.0/10.0)FSN3E(-f):
Static pressure setting HSP
Upper
ESP limit
Air flow (m
!
C A U T I O N
• Make sure SP-02 is selected on the remote control for RPI-(0.8-6.0)FSN4E units in the case of short duct installations. To configure
SP-02, refer the optional functions C5->"02", low static pressure option. Make sure the low static pressure option (LSP) is selected for
RPI-(8.0/10.0)FSN3E(-f) units.
• Ensure a minimal resistance is maintained in the duct, as shown in the fan performance graphs. Starting the unit with a duct that is too
short causes it to operate outside its accepted operating range.
48 SMGB0137 rev.0 - 05/2021
Part
High / Med
Low
Lower ESP limit
3 /min)
AR
CB
Static pressure setting LSP
Upper
ESP limit
Low
Air flow (m
TF
PCB2
PCB1
TB
High / Med
Lower ESP limit
3 /min)