Boiler activation contribution?

[simoncozens]

Hello! Thanks for the great integration; it was very easy to set up and get working for my TRVZBs. One idea I have is for each thermostat to have a variable "contribution value" when it comes to boiler activation. Right now, I can have the boiler turn on when any radiator calls for heat, or when (e.g.) two radiators are both calling for heat. But I can't say "turn on the boiler either when two radiators need heat, or when the study radiator needs heat".

If we could set a contribution value for each thermostat, I could make the radiator in the study worth "2 points" and every other radiator worth "1 point", and set the boiler activation threshold to 2 points.

[tbrasser]

I was thinking it might also be nice to do this based on total heat demand. (maybe just expose this in addition to nb devices)

e.g. my dining room has 2 underlyings totaling (dummy value) 2000W, the valves are 25% open so dining room demand = 500W.

Office has 1 underlying 1500W, valve is at 5% so demand = 75W

I could use this to toggle on boiler only if total demand > 1000W, and turn off when demand drops below 500W (to prevent shortcycling).

Even better I could this to drive opentherm modulating boiler to match supply and demand power.