1. Connect the water pressure sensor to the Wps terminals of the
terminal strip.
0 = Earth or neutral of the power supply
S = Signal or output from the sensor
+ = Supply voltage
Connecting an outside sensor
DIEMATIC iSystem: The outside sensor must be connected to the S.EXT
input.
IniControl: An outside sensor can be connected to the Tout terminals of
the connector. In the event of an on/off thermostat, the boiler will regulate
the temperature using the set point of the internal heating curve (
F).
1. Connect the two-wire cable to the Tout terminals of the connector.
Important
An OpenTherm controller can also use this outside sensor. In that
case, the desired internal heating curve must be set on the
controller.
1 Flow temperature setting (T
set
)
2 Heating curve set point (minimum outside temperature)
3 Heating curve set point (flow temperature)
4 Heating curve set point (maximum outside temperature)
F Heating curve
If an outside temperature sensor is connected, it is possible to adapt the
internal heating curve. Various parameter settings can be used to change
the internal heating curve.
See
Manual for the control panel.
Connecting the minimum gas pressure switch (Gps)
The minimum gas pressure switch blocks the boiler if the gas inlet
pressure drops too low. Check the setting for the Gps minimum gas
pressure switch (see table below).
Tab.34 Setting the minimum gas pressure switch
C 330 ECO Minimum value (mbar)
280 14
350 13
430 10
500 10
570 10
650 10
1. Connect the minimum gas pressure switch to the Gps terminals of the
connector
2. Set the presence of the gas pressure switch using a parameter
setting.
See
Manual for the control panel.
Fig.46 Connecting an outside sensor
Fig.47 Heating curve
AD-3000038-01
0 10 20
-20
-10
10
30
70
50
90
F
1
3
4
2
Fig.48 Gps connection
6 Installation
46 7600532 - v.11 - 13122018
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