Air-water heat pump current consumption and data

2021-02-10 14:48:50

It’s the same for me. I don’t know why either...
Within an hour, the return flow drops by 3K

so much for: Your screed stores much more energy than your buffer :p :p :p :p :p

2021-02-10 14:51:58

Why do you quote yourself? Your screed never cools down by 3k within an hour.

2021-02-10 15:02:29

If the return flow drops quickly and sharply, it is due to:
Hydraulics
Buffer tank
The screed has this temperature
Missing insulation

2021-02-10 15:03:11

I would say the -3 degrees outside temperature :). But you have that too, so that would not be an explanation.

Exactly

2021-02-10 15:06:54

Is your UV completely closed?

Great point you bring up! According to 3 different HVAC technicians, it must absolutely not be closed, because otherwise the flow rate during defrosting is insufficient. I didn’t believe it, but they were right.

I constantly had defrosting issues because the minimum flow rate could not be achieved.

2021-02-10 15:13:35

Great point you bring up! According to 3 different HVAC technicians, it must definitely not be closed, because otherwise the flow rate is not sufficient during defrosting. I didn’t believe it, but they were right.

I constantly had defrosting malfunctions because the minimum flow rate could not be reached.

Then your hydraulic settings are probably incorrect, and 28 degrees flow temperature is very high for a modern house. I run 25 21 0 in a KfW 70.

And that would also explain the rapidly rising return temperature.

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Air-water heat pump current consumption and data

Alessandro

halmi

T_im_Norden

Zaba12

Bookstar

tomtom79