Have you tested the LN4890 with the openwebnet binding before ? does it work? I do not recall it can be used as a OpenWebNet gateway.
Yes, I used it as OH gateway for two years before installing MHS1. Just now it is still used as gateway for AUX command coming from domoticz to the 3486 alarm.
If yes, you can setup the RaPi with OH3 and the latest 3.1 snapshot and connect it to the LN4890 + NT4695 + room thermostats. Then we can involve you in some testing.
Sure I can connect NT4695 to the bus, configuring it via MyHomeSuite and control it by LN4890. What is hard to do (i think but I’m not sure) is manage the room thermostats both via MHS1 and LN4890 without loosing actual thermo controls during these hot days: they are controlling the refreshing system. I’ll try in few days and I’ll report here if this setup is acceptable and running.
I’ll update also 3.0 to latest snapshot to see how standalone thermostats work, TY for your great effort!