How do I design a central heating control with two thermostats and solenoid valves?

Welcome.

This is my first post on this forum. I'll point out right away that I'm not an atuomatics guy, just an IT guy.... I'm looking for help designing (so I can hopefully somehow make it myself) a control to split the CO circuit into two levels in the house.
The idea is that I have one CO cooker and it is switched on by one thermostat - standard. I have been using the two levels independently for some time and would also like to be able to heat them independently with separate thermostats.

The cooker has, of course, one pump which generates the water circuit. It just so happens that I have a manifold at the cooker for these two levels and I had the idea that I could control the shut-off of each with an electro-valve. So the solution would be some sort of system that, based on the two thermostats (from each level), would open the corresponding solenoid valve and turn on the cooker. If both thermostats give a heating signal, then the two solenoid valves would simply open. It would still be a good idea to keep the corresponding solenoid valve open for a while after the thermostat switches off, so that the water can still circulate and cool down.

I would be very grateful for help in identifying/designing a suitable system. Perhaps there is something ready-made that I could use for this purpose. This would be the best way.

Thank you in advance for any reply.
Regards.

Some kind of simple programmable relay, e.g. telematik AF, would be suitable for something like this. The version of the relay depends on what the control voltage is. If 12/24V, you will need an additional power supply. On the telematik.co.uk website you can download the relay programming software and see how it looks.

Alternatively, ordinary relays and time relays.

Write to PW, I will be happy to help.

Hello,
the idea of controlling solenoid valves is fine , except that you have to take into account the boiler output, open/closed central heating system , gas/steam etc.
Why?

I often come across central heating installations from the 80-90s which have a safety pipe - open system - in common with the supply of radiators e.g. on the first floor; putting a valve on such a pipe is a nomination for the Darwin Award.
In your solution, there is a possibility of closing two solenoid valves; with a high boiler output, there will be no heat consumers and there is a risk ... another nomination.

I suggest setting up two four-way valves electrically controlled on the basis of the "maids" plus a differential controller so that one valve is always open.