Is it not possible to control an input boolean with a generic thermostat? I have a fireplace that I would like to have on a thermostat, but I would also like to control it with a timer to override the thermostat. It should function like an OR switch where if the thermostat is calling for heat from the fireplace OR the "boost" timer is running, then the fireplace should be on.
I would think this should be simple, giving the thermostat an input boolean as a target to switch on and off then an automation to watch the states of the timer and the input boolean to trigger the fireplace on and of, but the input boolean I created for the thermostat target is not selectable in the thermostat setup.