Hitachi RCI-4.0FSR - Econofresh Kit

5 Optional functions
Complementary systems
SMGB0137 rev.0 - 05/2021
174
5.3.2 Econofresh Kit
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Available ports
The system has three optional input signals programmed into the PCB using connector CN3 on the RPI unit and using
the remote control. Connector CN3 has two ports for conguring the optional input signals of the Econofresh kit.
The outdoor cooling function E1 requires no CN3 connector setting.
? NOTE
When the RPI unit DSW6 is set for use of the Econofresh kit, CN3 connectors 1 and 2 are locked on the RPI unit PCB.
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Description of optional input signals
Enthalpy sensor
On-screen display: E2.
The signal opens and closes the air inlet valves and the outlet damper, mixing the outdoor air and the return air of the
Econofresh kit. This function is based on the air quality parameters that provide precise control of the air quality.
Connect the cables as indicated in point “5.1.1 Available ports”. Only CN3 contacts 1 and 2 can be connected.
The signal has the following control logic:
Connector Contact number X1 Damper valve
CN3 1, 2
ON —
OFF Enabled
CO
2
sensor
On-screen display: E4.
This signal controls the inlet of outdoor air according to the concentration of CO
2
inside the room.
Connect the cables as indicated in point “5.1.1 Available ports”. Only CN3 contacts 1 and 2 can be connected.
The signal has the following control logic:
Connector Contact number X1 Damper valve
CN3 1, 2
ON —
OFF Enabled
Compatibilities between optional signals
The following table shows the compatibility between the di󰀨erent optional signals:
PC-ARPFE
optional
functions
Room
thermostat
Remote
control
thermistor
Remote
thermistor
Wireless
remote
control
Outdoor
cooling
mode
Enthalpy
sensor
CO
2
sensor
Room
thermostat
– – – – – – – –
Remote
control
thermistor
C8
– – – – O O O
Remote
thermistor
– – – – – – – –
Wireless
remote control
– – – – – O O O
Outdoor
cooling mode
E1
– O – O – – –
Enthalpy
sensor
E2
– O – O – – –
CO
2
sensor
E4
– O – O – – –
Not available: –
Available: O