as far as i am into floor heating, the “common” valves have open / close state only don’t they?
Yes, I think so
all in all you could use the max heating valves for opening and closing the valves on the distributor but not sure if there is enought space to fit the big actors on each valve then.
You think they fit if there is enought space…
But in my case I need then sometimes 2 Valves per room and they have to work syncron. There is the idee with the relay-board better.
But there is one big Problem… the woman acceptance faktor. This works only with a good Interface to controll the heating temperature.