ᐅ Heat pump is not compatible with a hydronic (water-heated) fireplace.

RotorMotor schrieb:

Oh, you could actually scroll further in the datasheet, and there is indeed an A16 model that you apparently have.
With that unit, you could easily heat a multi-family house!
It probably uses a lot of electricity and cycles frequently, but that would be the next challenge after you have the power consumption somewhat under control.
How do you measure the electricity consumption anyway?
Where does the 65 kWh consumption figure come from?

And yes, 28°C (82°F) would also be expensive with wood chip or gas heating.
That has nothing to do with heat pumps.

But as I said, focus on the basics first if you can’t find a heating professional:
Turn on the electric heating element only at freezing temperatures, both for heating and hot water.
Set a reasonably sensible heating curve according to the instructions.
Set all room thermostats to reasonable values; maybe 2°C (36°F) lower in bedrooms, and 3°C (37°F) or 4°C (39°F) in other rooms depending on desired temperature.
Turn the bathroom thermostat fully up.

Then adjust the flow rates at the manifold boxes, but maybe that can wait until later.

Jessica388 schrieb:

I'm also confused by everything, so that fits!

I just looked at these settings on the heating system:
Target room temperature 19 degrees, reduced 17
Heating curve
Slope 0.8
Shift 0 K
Flow temperature 27 degrees

Our heating technician comes about once a week and "experiments"… connects things differently, etc. All without success.
The thermostats are turned down because the rooms are reaching an "excessive" 20 degrees, which is enough. The doors are always open. Only in the bathroom do I want it warmer, so it's turned up there.

Mycraft schrieb:

Nice! And I struggle every time with my 0.4 and think that’s too much.

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Forget the idea that the heat pump heats individual rooms separately.

Think of your entire house with all the rooms as one large water circuit.

Each room has an access point that can be regulated to control how much water flows through and at what rate.

The entire circuit is heated to a set temperature.

To bring a room to the desired temperature, you need to allow a certain amount of water into that room depending on its size.

If all rooms are the same size, this isn’t a problem—you just let the same amount of water flow everywhere.

But rooms always vary in size, so you have to allow the right amount of water for each room.

You control this through the access point (manifold of the underfloor heating, where you can adjust the flow rate).

Unfortunately, some rooms cannot take in enough water to reach the desired temperature (usually bathrooms because they are small and require higher temperatures).

Now you can either create space for more water (by reducing pipe spacing or using wall heating) or increase the temperature of the water.

Raising the temperature (this is the well-known flow temperature) does provide the desired warmth in the bathroom, but the other rooms will also get warmer.

So here you need to reduce the amount of water until you reach your desired temperature.

This process is called hydraulic balancing.

The problem arises at low outdoor temperatures when the heat output is no longer sufficient.

You might want to increase the amount of water flowing into each room, but then you have to re-balance everything precisely, and you’re still limited by smaller rooms that can't take more water.

However, our heating system knows from the outdoor sensor that the outside temperature is dropping.

So it increases the flow temperature to compensate.

Because all rooms were previously balanced correctly during hydraulic balancing, this works as intended.

This is the heating curve of the system, which defines how much the flow temperature needs to be adjusted in relation to changes in outdoor temperature.

This is of course a simplified explanation, but it illustrates the basic function.

Jessica388 schrieb:

Since we have photovoltaic panels, we use an app that "monitors" the electricity. The consumption data comes from there, and I can clearly see when the heating turns on...

Jessica388 schrieb:

Since we have the photovoltaic system, we have an app that "monitors" the electricity. It provides the consumption data, and I can clearly see when the heating turns on…

kati1337 schrieb:

😳 😳 😳
We had a situation like that yesterday—the plasterers had covered our outdoor unit with plastic sheeting and forgot to remove it.

Edit: The question is, what is your heating system doing when it switches on every two hours like crazy?
Our system currently only reaches such high values when it is producing hot water. But not every two hours.
I don’t think it’s the underfloor heating; it’s probably your domestic hot water?