ᐅ Heat pump is not compatible with a hydronic (water-heated) fireplace.
Created on: 20 Oct 2023 18:54
J
Jessica388
Hello everyone,
I hope someone here can help us because our heating engineer doesn’t seem to be able to…
Key data
New build 2022 with 250 m² (2,691 ft²)
Heat pump Viessmann Vitocal 200-A
Multifunction storage tank MFS1000S
Water-heated stove with heating capacity on the water side of 8 kW
Photovoltaic system
Electric heating element
I am attaching the schematic of the storage tank layout.
The stove was initially connected under “old” and now it has been modified.
Everything works fine as long as the underfloor heating is off.
When the underfloor heating is on, our hot water temperature doesn’t exceed about 55°C (131°F).
When the underfloor heating is off, the temperature ranges between 65–75°C (149–167°F), either via the electric heating element during sunshine or by stoking the stove.
Now, however, this energy seems to be wasted. It can’t be that the underfloor heating requires 70°C (158°F) supply temperature to achieve a flow temperature of 35°C (95°F), right? The return water is only slightly cooler. So the water should only need to be heated by a maximum of 5°C (9°F).
We assume either a) something is still connected incorrectly, or b) the cold water from the underfloor heating causes such circulation that the hot water cools down within minutes.
What can be done about this?
Has anyone experienced similar problems?
Normally, we should almost run without electric power, but currently the heat pump switches on almost every hour to heat hot water…
I hope someone here can help us because our heating engineer doesn’t seem to be able to…
Key data
New build 2022 with 250 m² (2,691 ft²)
Heat pump Viessmann Vitocal 200-A
Multifunction storage tank MFS1000S
Water-heated stove with heating capacity on the water side of 8 kW
Photovoltaic system
Electric heating element
I am attaching the schematic of the storage tank layout.
The stove was initially connected under “old” and now it has been modified.
Everything works fine as long as the underfloor heating is off.
When the underfloor heating is on, our hot water temperature doesn’t exceed about 55°C (131°F).
When the underfloor heating is off, the temperature ranges between 65–75°C (149–167°F), either via the electric heating element during sunshine or by stoking the stove.
Now, however, this energy seems to be wasted. It can’t be that the underfloor heating requires 70°C (158°F) supply temperature to achieve a flow temperature of 35°C (95°F), right? The return water is only slightly cooler. So the water should only need to be heated by a maximum of 5°C (9°F).
We assume either a) something is still connected incorrectly, or b) the cold water from the underfloor heating causes such circulation that the hot water cools down within minutes.
What can be done about this?
Has anyone experienced similar problems?
Normally, we should almost run without electric power, but currently the heat pump switches on almost every hour to heat hot water…
Jessica388 schrieb:
Should I just let my food spoil? Sorry, but we don’t have a basement. Feel free to tell me how I can do it better or the right way. Which foods actually require a window to be left open all the time? There are countless people who have built without a basement, and I’m sure none of them keep a window open permanently. That’s not a good idea in winter, no matter what heating system you use.
We have a storage room where the heating is turned down, but since it’s close to the living area, it’s practically as warm as the rest of the house. We don’t have any problems with food spoiling. Anything that needs to be kept cool goes in the fridge.
J
Jessica38826 Oct 2023 09:41kati1337 schrieb:
Which foods require a window to be kept open constantly? There are countless people who have built without a basement, and I’m sure none of them keep a window open all the time. That’s not a good idea in winter, no matter what heating you use.
We have a pantry where the heating is turned down, but since it’s near the living area, it’s basically just as warm as the rest of the house. We have no problems with food spoiling. Anything that needs cooling goes into the refrigerator. 200 kilograms (440 pounds) of potatoes, the same amount of apples, carrots, etc.
At 20°C (68°F), which I typically have if the window is closed, you can throw all of that away after a short time.
Jessica388 schrieb:
2 hundredweight of potatoes, just as many apples,
carrots, etc.
At 20°C (68°F), which I usually have easily when the window is closed, you can throw all of that away after a short time.That would mean poor planning. In modern houses, even the basements are no longer that cold, but they would still be more suitable for storage.R
Radfahrer26 Oct 2023 09:50Well, you can forget about the potatoes.
You need a well-ventilated cellar for that.
You need a well-ventilated cellar for that.
J
Jessica38826 Oct 2023 09:54Radfahrer schrieb:
Well, you can forget about the potatoes.
You need a well-ventilated basement for that.That’s why the window is constantly open, but it’s still too warm…R
Radfahrer26 Oct 2023 09:58Sure, that won’t work. It should be less than 7° (better less than 5°).
Similar topics