Thank you for all the quick and good input.
That’s not quite entirely an unfair question: I have 4 floors with in total 11 heat zones. I would like to check the T for each zone (11) operate the water pumps if required (4) and check the in/out temp of the heating (22). Thats in total 36 ‘elements’ I need to check. Beyond that, to keep things a bit comprehensible I’d prefer to ‘code’ the sensors e.g.
zones based on number and floor. e.g. 2nd floor 1st zone = V21, 4th floor 2 zone = V42 (which is the highest V-pin number I’d like to set).
The fact that each VP is unique per device is actually a bit annoying for me as I’d like to accumulate all sensor input at one point and regulate from there on. If you’re interested, this is our situation currently:
The valves are directly operated by the thermostats (220V relay).
I want to remotely control each setting and EVERY zone (considering to add valves to the two open zones as well), additionally I want to check whether the zones are actually working. So e.g. if T1 says ‘go’ then V1 opens and then Zone 1 gets heated. I’d like to check whether thats actually happening (initially by checking the current, but its too low, then by voltage, but too dangerous, then by waterflow, but too expensive, so finally by checking the dT between outgoing and incomming heating tube.)