The question is whether you get more flow through the underfloor heating if you slowly (step by step) close the bypass valve? You still have 26 compressor starts in 48h. I have 3 per day.
The question is whether you get more flow through the underfloor heating if you slowly (stepwise) close the bypass valve? You still have 26 compressor starts in 48 hours. I have 3 a day.
Can nothing happen if you gradually close the valve? So can nothing break if pressure builds up that is not released?
Then the heat pump gives an error message and shuts off. You can then reopen the bypass valve and reset the error. Therefore, close it step by step when the pump is currently heating, you just have to adjust, or briefly raise the heating curve to initiate a heating process.
could it also be because I only have a flow of 1059 l/h instead of the 1600 that the LAD 9 requires?
Exactly, the bathroom radiator is electric, independent of the air-water heat pump.
This is because hot water reaches the return flow too quickly. However, this does not happen with water that flows through the circuits of the underfloor heating, but with water that flows past the heating circuits. So in your case, via the bypass valve. Regardless of how powerful the heat pump is.
For the estimation, you need Ht, envelope surface area, heated gross volume, desired temperatures, standard outside temperature, number of occupants.
You can find these, for example, in the KFW certificate.
This will get you a good estimation.
To estimate you need Ht, envelope area, heated gross volume, desired temperatures, standard outside temperature, number of people. You can find these, for example, in the KfW certificate. That will give you a good estimate.