No floor heating experience! Previously "fast" electric floor heating! And now?

Good day. In my old small apartment, I had an electric underfloor heating system. It was very practical. I came home from work and turned it on. Half an hour later, the apartment was warm. When I went to bed, I simply turned it off again. During the day, I was at work. But now I have a pellet underfloor heating system. And I don't even know how to operate it yet... I leave the house at 8:30 a.m. (work). I come home around 6 p.m. On Saturdays and Sundays I am at home. I live alone in my apartment about 90% of the time (80m2, 3 rooms, separate circuits). Occasionally my niece visits (stays overnight). But how do I have to set the underfloor heating to keep it warm? I don't really like it too warm. But according to the developer, I have to properly ventilate and heat at the beginning because I am moving into a new building. Who can give me tips regarding underfloor heating? Thank you very much Erika

Don't adjust anything for three days and see where the temperature stabilizes. Then make minimal adjustments up or down until you feel comfortable. Always wait 2 days in between. Ventilating in between is largely irrelevant for the underfloor heating. I haven't touched my controllers for three years ...

Don't adjust anything for three days and see where the temperature settles.

Then make minimal adjustments up or down until you feel comfortable. Always wait 2 days in between.

Ventilating in between is largely irrelevant for the underfloor heating.

I haven't touched my controllers for three years ...

That means, for example, setting the dial of the underfloor heating to level 3 out of 10 at the beginning.
And then - if it's too cold - turn it up or down.

But: Does the underfloor heating then run all day long?

Yes.

The underfloor heating should be controlled by the heating system. As a surface heating, the floor (and the apartment or the house) stores the heat, so the constant loss (or heating demand) is low. Turning it down for a few hours does not work.

I am now assuming a modern underfloor heating system in an insulated house, not one that is 30 years old ...

Just don’t adjust anything for three days, and see where the temperature settles.

Then adjust in minimal steps up or down until you feel comfortable. Always wait 2 days in between.

Ventilating in between is largely irrelevant for the underfloor heating.

I haven’t touched my controllers in three years ...

That means, set the dial of the underfloor heating at the beginning, for example to level 3 out of 10. And then - if it’s too cold - up or down.

But: Does the underfloor heating then run all day long?

Yes.

The underfloor heating should be controlled via the heating system. As a surface heating system, the floor (and the apartment or the house) stores the heat, so the constant loss (or heating demand) is low. Turning it down for hours at a time doesn’t work.

I assumed a modern underfloor heating in an insulated house, not one that is 30 years old ...

Yes, I’m moving into a new Kfw70 condominium. So the underfloor heating runs all day long. So if the underfloor heating water runs all day long, is it cheaper than if less heating water flows through the meters? I thought the underfloor heating is billed based on flow rate. That’s why I would always turn off the underfloor heating when I go to work and always turn it on when I come home. But I really have to get used to this...

The underfloor heating must run all the time if you want to save. Paradox, right? But if it runs continuously, the system requires lower flow temperatures than in intermittent operation, where the flow temperatures have to be increased, for example, in the morning to have a warm bath. And this is where the savings lie... low temperature over a long period saves more energy than high temperature for a short time and partially off. But this is only explained very superficially...