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
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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.
D
Daniel-Sp17 Dec 2019 08:39My flow tubes have a stop at fully open and cannot be unscrewed beyond that.
More flow in the bathroom?
What setting is the bypass valve on?
By closing it, I was able to achieve more flow, but only gradually turning it at first.
More flow in the bathroom?
What setting is the bypass valve on?
By closing it, I was able to achieve more flow, but only gradually turning it at first.
chewbacca12317 Dec 2019 08:52guckuck2 schrieb:
Maybe take a break for a while. It was 10°C (50°F) outside here this morning. At that point, adjusting settings doesn't really help anymore.You’re right, with all my overenthusiasm, I hadn’t really thought about that anymore.chewbacca12317 Dec 2019 08:57Daniel-Sp schrieb:
My flow tubes have a stop at fully open, so they can’t be unscrewed completely.
More flow in the bathroom?
What setting is the bypass valve on?
Closing it allowed me to get more flow, but only adjust it gradually at first. Yes, I was apparently able to unscrew mine completely, and then I took a shower. But only for a fraction of a second—I reacted quickly and screwed it back in.
I’m monitoring the situation now and will report back tomorrow morning, or maybe this evening.
Do you know why I couldn’t give the bathroom more than two? I reduced the supply to the hallway quite a bit, including the parents’ bedroom and the walk-in closet.
D
Daniel-Sp17 Dec 2019 10:41This is a matter of resistance (pipe length, diameter, bending radius, installation spacing). Heating water also follows the path of least resistance. As I mentioned, I was able to increase flow further by closing the bypass valve.
chewbacca12317 Dec 2019 11:59Daniel-Sp schrieb:
This is a matter of resistance (pipe length, diameter, bend radius, installation spacing). Heating water always follows the path of least resistance. As I said, in my case, more flow was achieved by closing the bypass valve. But can I simply close the bypass valve, even if the individual room thermostats are still installed?
Over the past two days, I have consumed around 30 kWh per day, which is obviously very high.
However, this was likely due to our house becoming extremely warm.
What do you think—how will the kilowatt-hour consumption develop from here? Should I expect improvement by tomorrow?