ᐅ Underfloor heating with an air-to-water heat pump. House gets too warm when the sun is shining.
Created on: 4 Dec 2019 14:18
C
chewbacca123
Hello everyone,
I have a general question.
We moved into our new build four months ago. The living area on the ground floor has three large floor-to-ceiling windows facing south. We have underfloor heating and an air-to-water heat pump.
It provides a really comfortable temperature inside the house, but we have a problem – whenever the sun is shining in winter, even if it’s -2°C (28°F) outside, the temperature suddenly rises to 24°C (75°F) in the living room. It gets uncomfortably warm in here, and the underfloor heating can’t be turned down quickly.
Should we assume that the large floor-to-ceiling windows are responsible for the heat gain? A photo of the south-facing side of the house is attached.
What would you do – always lower all the blinds as soon as sunlight is forecast? That seems quite annoying...
We have motorized blinds controlled by Somfy. Would you consider buying a sensor that automatically lowers the blinds at a certain temperature?
Thanks in advance for your replies.
I have a general question.
We moved into our new build four months ago. The living area on the ground floor has three large floor-to-ceiling windows facing south. We have underfloor heating and an air-to-water heat pump.
It provides a really comfortable temperature inside the house, but we have a problem – whenever the sun is shining in winter, even if it’s -2°C (28°F) outside, the temperature suddenly rises to 24°C (75°F) in the living room. It gets uncomfortably warm in here, and the underfloor heating can’t be turned down quickly.
Should we assume that the large floor-to-ceiling windows are responsible for the heat gain? A photo of the south-facing side of the house is attached.
What would you do – always lower all the blinds as soon as sunlight is forecast? That seems quite annoying...
We have motorized blinds controlled by Somfy. Would you consider buying a sensor that automatically lowers the blinds at a certain temperature?
Thanks in advance for your replies.
N
nordanney11 Jan 2021 14:03Bookstar schrieb:
Novelan Chinese devices Uh – Novelan, like Alpha Innotec, belongs to Nibe and is therefore Swedish 😉
nordanney schrieb:
Uh – Novelan, like Alpha Innotec, belongs to Nibe and is therefore Swedish 😉 Are they really manufactured there? I was more referring to the quality anyway..
N
nordanney11 Jan 2021 14:07Bookstar schrieb:
Are they really built there? No. Of course not. Both Novelan and Alpha Innotec develop and manufacture exclusively in Germany. No China involved. So that can’t be the reason.
Bookstar schrieb:
So, our situation is really escalating right now. At minus 8 degrees Celsius (17.6°F), we need 38 kWh of electricity daily. The system has automatically lowered the hot water temperature from 48 to 44 degrees Celsius (118.4 to 111.2°F). It can’t manage more at this outdoor temperature.
Sometimes I really long for the gas heating back, especially in winter 🙁 So, you really had a house consumption of about 50 kWh yesterday? I don’t quite understand that. You were shocked how much my flow temperature increased last time. For me, that means your flow temperature is probably around the low 30 degrees Celsius (about low 80s°F). So the heating curve can’t be the issue here. Your heat pump must be running almost continuously or with very short breaks, right?
D
Daniel-Sp11 Jan 2021 14:44With a modulating heat pump, the ideal scenario is to turn it on in autumn and off in spring, resulting in one cycle.
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