The Efficient Home Forum

I live in Poland. I bought a Nefit EMS-OT Converter in the Netherlands.
It works perfectly with my Buderus Logamax plus GB072(K)V2 (EMS protocol communication, Bosch group).
To put it very simply, my configuration:
Honeywell Evohome -> Honeywell R8810A1018 -> Nefit EMS-OT -> Buderus boiler.

I live in Poland. I bought a Nefit EMS-OT Converter in the Netherlands.
It works perfectly with my Buderus Logamax plus GB072(K)V2 (EMS protocol communication, Bosch group).
To put it very simply, my configuration:
Honeywell Evohome -> Honeywell R8810A1018 -> Nefit EMS-OT -> Buderus boiler.

If I understood what you wrote correctly, I would use an additional electromagnetic relay (ordinary, unprogrammed Honewell) and connect it electrically so that when there is a demand for hot water, BDR91 for hot water would simultaneously turn off the power supply of BDR91 for central heating. After ...

Thanks, that's a shame, and a waste of materials. Maybe I'll use it for experiments on seeing what can be done with the micro USB port on the side of the valve!
Micro USB is used to connect a magnetic window opening sensor. 100% certainty that HR92 will respond to opening and closing the window. I ...

Hi,
disable "local override" in the ATC driver settings for your HR92. If temperature changes are caused by damage to some electronic component in HR92, the above setting on the control unit can stop such changes.
https://support.resideo.com/s/article/How-to-disable-local-override-on-HR92UK?language ...

Hi,
In my opinion, HR92 calibration should only be performed with the heating on. Why? It is usually warmer near a hot radiator than in the interior of the room. In such a situation, the offset is to allow the room to be heated up by preventing the thermostatic valve from closing too quickly.