This alone would make the difference when the heating has been on. Once the valve is open the micro switch in the valve is closed. Whilst the hot water is on and calling the boiler for heat you will get a back feed from the boiler down the orange to the heating valve, through the micro switch...
I am looking for a 2 part contactor to transfer a boiler enable signal from first floor to ground floor where there is no practical way of running a cable.
In short the unit needs to receive a 230v call for heat from the wiring centre and send an RF signal to a receiver contactor that will...
