Questions about underfloor heating with geothermal energy

The topic can be closed

Today we spoke with a person from the plumbing team who knew what he was doing and didn’t just install. On his advice, we opened all the flow meters (that is, for all rooms), so now there is "flow." The rooms are desirably warm.

I just hope – which needs to be clarified on Monday – that all flow meters can (may/must) be fully opened. Or should not all be fully open?

Thanks to you all for the support

ok...we have that too. But the flow is only given if the actuator is open, right?

Yes, exactly

You won't believe it, but my wife is too warm. Should I now lower the heating curve overall, or rather the slope?

You will not be able to determine what needs to be changed with relatively constant outside temperatures. I personally (caution, layman's opinion) would first reduce the room controllers in your place, if necessary continue with a parallel shift of the heating curve, and finally adjust the slope. However, this requires a long-term observation. I have been observing since August without making any significant changes. Is it really too warm, or is it just stuffy due to the high humidity? We are currently heating more in some rooms than we should to get the humidity out of the new building. Especially now, with the dry cool weather, this works really well.

Then I will test the parallel shift when it gets colder (so reduce evenly from the start of the curve on the left to the end on the right, right?).

Our room thermostats ARE supposedly supposed to always remain fully open (according to Junkers).