I just can't seem to get it properly adjusted. We have an outdoor temperature sensor. Most radiators are set to a maximum of two, some even turned off, and yet they're still warm. And consumption has, of course, increased now. 6m3 in one day. I think that's a lot, right?
My gas boiler has an antifreeze program that activates when the outside temperature is below 3°C and after the antifreeze delay (6h) has elapsed. So as long as the valves in the rooms are open, the heating circuits of the rooms will get warm, even if the rooms are sufficiently warm due to the fireplace. I have now completely deactivated the heating circuit in the settings. Since then, it's been quiet.
To say something about your consumption, more information is still missing. How much living space, energetic condition of the house, room temperature, flow temperature. Then one could probably estimate it a bit better. Depending on the living space and insulation, 6m³ per day during the heating season doesn't sound too much.