Geothermal heat pump single-family house 200m² underfloor heating kfw55 - setting/optimization

What does a structured measurement look like? Please explain it to me. Unfortunately, I only have 15 years of experience in measurement, control, and regulation technology...

The bedroom does not get warmer than 18.5°C with windows and doors closed. What is so hard to understand about that?
The shading is half lowered (slats).

What does a structured measurement look like? Please explain it to me.

For example, average values for each room over a day.

Consideration or at least mention of external influencing factors such as outdoor temperature, wall construction, windows open, direct sunlight, showering, electric heaters, hairdryer, ...

The bedroom does not get warmer than 18.5°C with windows and doors closed. What is so hard to understand about that?

That you measured 19.5, after all.

For example, average values for each room over one day.

Consideration or at least mention of external influencing factors such as outside temperature, wall structure, open windows, direct sunlight, showering, electric heaters, hair dryer, ...

That you just measured 19.5.

I set the maximum temperature value for each room. Without influencing factors like sunlight or occupancy, because these are not constant factors.
Average values are useless.

The 19.5°C was after 8 hours of sleep!
The maximum value for the bedroom is 18.5°C.

I set the maximum temperature value for each room. Without influencing factors such as sunlight or occupancy, because those are not constant factors. Average values are useless. The 19.5°C was after 8 hours of sleep! The maximum value for the bedroom is 18.5°C.

Sorry, that doesn’t make sense. How can the maximum value be lower than the measured value? And what do you mean by setting this value? Measurements are obtained through a measuring device, not by setting a value. And average values are very useful for a house, because as we see you otherwise also measure disturbing factors. Since a modern house reacts very slowly, averages are exactly the right way!

I'll explain it to you with another example:

A meeting room is used daily by a different number of people. On one day it is used by 2 people, on another day by 10 people including laptops, etc. On one day it is occupied for 2 hours, on other days up to 12 hours (also with varying numbers of people). Due to the waste heat from the people (as when sleeping) and the devices, I sometimes reach 23°C and then again (with full occupancy over several hours) up to 28°C. Should I regulate/heat according to the average temperature? According to that, I would never need to turn on the heating. However, if I enter the room alone in the morning (which according to your statement would not need to be heated), I would freeze my ass off ;)

Therefore, a maximum temperature is set for rooms, according to which the heating also regulates with its flow temperature! In my bedroom, it is 18.5°C! Which is not exceeded even when unoccupied....

I won’t go further into the somewhat absurd example of 28 degrees in the meeting room. This doesn’t even make sense in theory.

Should I now regulate/heat according to the average temperature?

Here is the answer: YES.

Because, as already mentioned, a (modern) house is very sluggish when it comes to indoor temperatures (apart from open windows and doors). The house is insulated on the outside, with large masses inside. Therefore, it takes a long time (many hours to days) for changes to take effect.

That is also exactly the reason why everyone advises deactivating the ERR and setting the amounts fixed.

Opening and closing valves briefly simply doesn’t make sense with such a sluggish system.

That’s why a maximum temperature is set for rooms, according to which the heating regulates its flow temperature! In my bedroom, it is 18.5°C! Which is not exceeded when unoccupied....

What does it mean to set this temperature? Of course, you can desire a temperature, but whether it is reached without active/external cooling is questionable.

Here, one could really do an experiment! If you are on vacation, record the temperatures of the rooms. My expectation would be that it then shows that the temperature differences between rooms within the thermal envelope turn out to be very small.