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.
Bookstar schrieb:
My end point is 28 degrees, which is enough.Return flow, yes. Supply flow would be quite optimistic. But we will only find out when it actually gets really cold.
chewbacca1236 Dec 2019 17:03Lumpi_LE schrieb:
The heating curve looks quite normal, it’s very strange that it’s showing you any supply temperatures of 65°C (149°F)... I just discovered this:
chewbacca1236 Dec 2019 17:05Bookstar schrieb:
My endpoint is 28 degrees, which is sufficient.I just found this, which is probably the actual value:
30.9°C (88°F) at an outside temperature of 3°C (37°F) is far too high. The return temperature is only 0.2 K below the supply temperature, meaning the heating energy remains in the water. Most likely, all ERRs are closed?!
I would recommend having the system inspected. Nothing is working properly.
I would recommend having the system inspected. Nothing is working properly.