With a properly planned heating system, it is even more comfortable NOT to use the ERR.
Where did you get that nonsense from?
Clearly neither from studying nor from practical experience.
The entire system works including the heating circuits of the sunlit rooms and adjusts itself correctly.
Nothing adjusts without actuators.
What you mean is that certain self-regulating effects occur as soon as saturation happens in the rooms.
But that neither saves energy nor increases comfort.
Apart from that, the underfloor heating regulates anyway, even with solar gain, with such a time delay that a shutdown by the ERR only takes effect in the evening or at night.
And that is also wrong.
It reacts pretty quickly.
For example, set to 21.5 degrees in the office, it maintains the temperature continuously.
If exceeded, it closes the circuit and the temperature immediately stops rising.
A bit of physics again: The heating circuit delivers 200W at a delta T of 3 degrees and flow rate of 1 l/min.
The PC, monitors, notebook, and one person alone already produce about 400W.
Not reacting to that and continuing to heat with 600W cannot make sense if the alternative is real regulation.
You know that proper cooling doesn’t work with underfloor heating anyway?
Again, you apparently have no practical experience here.
My experience: it works just as well as heating!
In winter, when heating, I have an indoor to outdoor delta T sometimes over 30 degrees.
In summer when cooling, rarely more than 5 or 10, so inside 23, outside 30, that's only about 7 degrees delta T.
That can be cooled very well.
Then please also install a corresponding humidity sensor in all rooms or at least in the hydraulic balancing valve.
With KNX absolutely no problem at all.
Although installing in all rooms is of course nonsense.
Basically, it is enough to evaluate the exhaust air humidity from the controlled residential ventilation.
Just switch over and let it run.
Haha, you’re something else, first saying it doesn’t work and must be done very elaborately, and then saying you just do it somehow and wonder why it doesn’t work?!
What kind of rooms are you actually referring to with &Co? What sense does it make not to cool certain rooms? Just as pointless in the house as not heating rooms.
When cooling, I want the hydraulic balancing essentially reversed compared to heating. And that is exactly what a sensible ERR control does automatically.
For example, when heating, I want minimal flow in the bedrooms so it doesn’t get too warm when sleeping.
When cooling, I of course want the flow to be as high as possible.
For bathrooms, exactly the opposite: in winter fully open to make them nice and warm,
in summer fully closed so it doesn’t get too cold. And in bathrooms you can really get condensation problems quickly if you pump cold water through the floor or walls.
And ultimately, this applies to all rooms. With ERR I just set the target temperature once and it is maintained. I don’t have to go to the distribution box twice a year to redo the hydraulic balancing.
But frankly, what’s the point of the discussion?
How can someone come up with the idea of making their house smart, spending tens of thousands of euros, and want to save a hundred on an actuator plus a few tens for control valves just because someone on the internet said “underfloor heating regulates itself”?