Air-water heat pump current consumption and data

There might still be some room.
Although 5 K is okay, the heat pump often runs with less.

There might still be some room.
Although 5 K is okay, the heat pump often runs with less.

My heat pump has never seen a 4,x spread in heating mode. I am curious about the next heating cycle myself. But as it looks, I can only regulate the temperature in the house via the heating curve and no longer via the flow rate, otherwise the mess starts all over again. From my point of view, this severely restricts temperature adjustment of individual rooms. The KG doesn’t help either because the 3 radiators with 0.5 l/min already produce 22 degrees.

I could still increase the office from 1.25 to 1.75. But that would be it. Then I would be at 1380 l/h without KG. Nominal output is 1600 l/h.

That was the disaster day today and yesterday and the reference day 05.01 of the "perfectly running" heat pump.

Normally, you do it exactly like that. Open all [HKV] and then lower the heating curve until the reference room becomes too cold, and then go back one value. Only when that fits do you throttle.

Normally you do it exactly like that. Open all HKVs and then lower the heating curve until the reference room gets too cold and then go back one value. Only when that fits do you throttle.

OK, apparently I haven't managed that in the last 3 weeks and I've tried a lot. I rather have the problem that the ground floor is always 2-3 degrees warmer than the upstairs bathroom where the flow rate is now already at 3l/min. So upstairs bathroom 21.5 and ground floor 23.5-24 degrees. The problem now is that I need every flow rate on the ground floor, otherwise it doesn't fit again. Oh yes, and upstairs the bedroom and the office will then also end up at 22.5 degrees and the children's rooms at 20.5 degrees with the new flow rates. That's why everything was set so low in the first place: to make sure exactly these rooms are not so ridiculously warm.

Where are Err from?
You started with a completely open HKV?
Which room do you want to take as a reference?
Bathroom upstairs?
It's best to start your own thread for that to check.

I don’t have it in my head but how big was your house and which KfW type?
28 kW is over 80 kWh of heat, I find that a lot.

It is a KFW55 with controlled residential ventilation and 180 m² plus a basement. The basement is half heated. The amount of heat is about 90 kWh per day and comes from the heat pump meter of the system.