Thermal balancing of underfloor heating - How to proceed?

That's why I say it. Under no circumstances spin wildly. The system is now most likely more or less in balance. Therefore, if at all, only minimal adjustments are necessary.

I would simply doubt that, or rather, as an owner I would definitely want to verify it myself. I'm not sure whether a hydraulic short circuit exists due to the partially very short pipe lengths, or whether there are other "invisible" problems.

Thermal short circuits can fortunately be measured. I sent him instructions for the thermal balancing from the pink forum.

Currently, the settings are as they are for the hydraulic balancing. The heating curve is set to 2 out of 10 and the reference outdoor temperature to 12. So currently, heating only takes place at night.

The initial post states that the curve is flat and heating only occurs at night. It is also not reported that it is too cold anywhere. So it seems the system is balanced. Otherwise, there would be other problems. I would keep a low profile so as not to overinterpret and unsettle the OP now.

Actually, I am now a bit uncertain.
So I will leave the values as they are for now until it gets colder. Then I will start adjusting from the values set by the hydraulic balancing.

But if I only turn individual rooms higher or lower based on the values, I don’t see whether the heating curve needs to be adjusted, right?
What should I do with the very short circuit? Just always leave it unchanged to avoid errors?
With 16 meters, that is only the circuit in the upstairs hallway. All other circuits are considerably longer, although very different in length.

I have now attached a picture of the hydraulic balancing and the heat load calculation.
But not much can be seen from it.

I have read the explanation from the neighboring forum. But I’m not sure how to best apply that to my situation now.

Thermal short circuits can fortunately be measured. I sent him instructions for the thermal balancing from the HS dialog.

I think it's good that you are giving such detailed assistance. And yes, the curve is flat and it obviously isn't too cold at the moment. But it doesn't necessarily have to be if the system is hydraulically messed up and it leads to early compressor damage. I explicitly do NOT want to unsettle anyone and I think it's good if a heating engineer has done a good job. That just rarely happens. An extreme case here seems to be . So there is no rush, but checking is always better.