Switching contact function

CAUTION! With pre-heating/supplementary heating. Incorrect installation will result in unit damage. If external pre-heating or supplementary heating is selected, the power supply for the component should be switched via an external relay.

Parameters: Switching contact
Setting value: alarm, filter message, operating display, shutter, supplementary heating, pre-heating, brine EHE (unregulated pump). One of the aforementioned external components can be switched with the potential-free switching contact (max. 5 A) of the basic circuit board (main board).

Additional settings for supplementary heating switching points

Under Switching contact, select the Supplementary heating parameter.
Under Supplementary heating

Set Supplementary heating parameter to “yes”.
Adjust switching point to hysteresis setpoint temperature.
Set Supplementary heating parameter to “no”.

Additional settings for brine EHE switching points

Under Switching contact, select the Brine EHE parameter.
Under Brine EHE

Set Brine earth heat exchanger parameter to “yes”.
Adjust switching points to T air inlet offset heating, T air inlet hysteresis heating and T air inlet hysteresis cooling parameters.
Set Brine earth heat exchanger parameter to “no”.