Properly setting the air-to-water heat pump with underfloor heating

Unfortunately, I am not an expert, just an interested amateur...

There are several very good ready-made guides. Just type "hydraulischer Abgleich" into the web search.

I finally found the key for my distributor...

to me, it looks like they are already completely open?

Here is my actual status from the control:
Flow zone 1+2
Set temp "0"
Set curve "0.6" (I have now set it to 0.4)

Comfort temp 21
Reduced temp 17

Hot water setpoint 50
Hot water storage 54
Comfort 50
Reduced 42

I can’t find more values, but the menu is also very strangely structured.

You have to take pictures of your flow regulators when the heat pump is running.....otherwise they just show "0".

Otherwise, get rid of your night setback, it makes no sense at all with a heat pump, or rather doesn't save you anything.

Ah ok... so this red ring then basically moves down and indicates the flow rate?

Night setback are the "Reduced" values for heating and hot water, right?

I looked up the hydraulic balancing, apparently it is mandatory anyway according to the Energy Saving Ordinance/VOB and must be done by the heating specialists?

Yes, of course that is part of the heating installer’s tasks. However, this is where the wheat is separated from the chaff, and a roughly adjusted system is more the rule than the exception.