What flow temperatures are you currently running?

Attached are temperatures after the heating has been running overnight.

Outside temperature just now ~9°C

Guest 21.3°C
Occupied overnight.

Bathroom 20°C

Bedroom 20.3°C
Window tilted overnight because it was too warm or else it would be even warmer.

Hallway 21.3°C

Living/Dining/Kitchen 21.2°C
Window tilted for the first ventilation

WC 20.3°C
Window tilted for the first ventilation

Utility room 20-22°C
Window tilted overnight because it would otherwise be too warm or even warmer

Outside temp approx. 9°C Heating curve as usual 0.1 Desired temperature 20°
Flow rate as usual around 750 l/h

Heat pump controller requested a forward temperature setpoint of 22.5°C at these outside temperatures/heating curve


Temperature-wise everything feels good, bathroom could use a bit more flow. Then guest, bedroom, hallway, WC and utility room a bit less. Or I think I’d prefer to completely shut off the utility room via the room thermostat because it’s too warm due to external heat anyway (and I’d like the volume flow directed more towards the bathroom)

Just not sure if it makes sense to adjust again now, or if I should wait until it’s around 5°C 24/7 and the heating runs longer. And what kind of switching behavior will set in, the short circuits WC, hallway could act like a short circuit, causing the system to cycle.

"Hütte" from 2017, so 0.3 is of course way too high. And where is the room setpoint?

Differential supply/return 1 K? :rolleyes:

Room setpoint at 23° because of the bathroom and differential at 3K supply between 28-30 and return 25-27

The heating engineer said back then the house was designed for a heating curve of 0.5?

Maybe meant basepoint 1°C?

Maybe an electric quick heater for the short heat boost is an option? Programmable ones exist.

I’m just realizing that I can’t really get the bathroom warm without heavily throttling everything else. I actually don’t get it, I don’t need a warm bathroom 24/7.
Actually, I don’t really need a particularly warm bathroom, but I don’t live alone ;)

We have an electric heater in the bathroom. The question is whether it’s worth it with the electricity costs. Either let the electric heater run or turn up the bathroom fully, raise the heating curve a bit but throttle the other rooms or lower the heating curve a bit, give the other rooms a bit more flow and turn on the heater in the bathroom morning and evening,

Where is that? I haven't found it yet on my first search :D

Just try searching. Yesterday, a matte black standing piece was shown to me here in the ads... I'm sure there are other great things as well. Infrared plates, for example, which come in modern shapes and designs without being intrusive.

Is your UWP set to constant pressure?

is your UWP set to constant pressure?

do you mean me? Then yes, it is set to constant

So this morning it was 6°C outside temperature instead of 9°C, indoor temperatures almost identical to those at 9°C.

The target flow temperature at 6°C outside temperature on the heat pump controller is now half a degree higher (23°C instead of 22.5°C) than at 9°C outside temperature, that’s my theory/conclusion on how much or in what ratio the flow temperature must increase with the outside temperature...

Now I would need two or three days in a row with corresponding outside temperatures so that the heating runs continuously for about 48 hours or so, and not just starts up at night.