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…
I assume that anyone who stores this much vegetables and fruit and gets free wood has farmers in the family? Can’t they store the produce at their place, and you pick up about 5 kilograms (11 pounds) once a week? Or build an outside cellar. Has anyone here done that? There’s a thread about it, but I forgot who.
@haydee was it you?
@haydee was it you?
J
Jessica38826 Oct 2023 10:30Tolentino schrieb:
I assume that anyone storing that much fruit and vegetables and getting wood for free must have farmers in the family? Couldn’t they store the items on their property, and you pick up about 5 kilograms (11 pounds) once a week? Or build an outdoor cellar. Someone here has done that, there’s even a thread about it, but I forgot who.
@haydee was it you?The outdoor cellar is an idea. Thanks, I’ll look into that.Jessica388 schrieb:
That’s why the window is always open, but it’s still too warm…Help! We don’t have a window at all in the pantry 😱 What do we do now?!The 65 kWh per day is becoming a realistic figure.
No, it wasn’t me. I store my potatoes in the old above-ground cellar and the apples in the garage. Potatoes and apples should not be stored together. Preserved food is kept in the attic.
You can’t store that amount of potatoes in a pantry in a new building. They don’t really like cold concrete cellars from the 1960s up until the start of the energy-saving regulations.
The storage issue should have been known in advance.
You can’t store that amount of potatoes in a pantry in a new building. They don’t really like cold concrete cellars from the 1960s up until the start of the energy-saving regulations.
The storage issue should have been known in advance.
H
HeimatBauer26 Oct 2023 13:41haydee schrieb:
The storage issue should actually have been known beforehand. To be honest, I often have to bite my tongue when people voluntarily acquire items that simply don’t fit their situation. Sure, I grew up in a 1950s house where we had a potato bin in the pantry cellar, and the potatoes would last for months. But you couldn’t store anything else there, especially nothing that could rust.
And once again, I have to say: energy is still way too cheap. If we continue with such absurd practices (or can afford to) like the compulsive bundling of heating and ventilation, then my opinion is this: the price per kWh must be at least 30 euros (for every type of energy!) before people start thinking about how sensible their actions really are.