6.2 Complementary systems
6.2.1 Econofresh Kit
¿ 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 configuring the optional input signals of the Econofresh kit.
The outdoor cooling function E1 requires no CN3 connector setting.
N O T E
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.
¿ 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 Available ports, see on page 194. 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 Available ports, see on page 194. 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
6 Optional functions
194
SMGB0063 rev. 1 - 10/2010
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