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.
chewbacca12313 Dec 2019 15:10halmi schrieb:
Please take your time to carefully read through the 20 pages here again; it has already been explained several times what needs to be done.I’m just overwhelmed ☹️D
Daniel-Sp13 Dec 2019 15:49The system technician won’t be able to help you either.
Since you don’t know the heating circuit lengths (and probably your heating installer doesn’t either), you definitely need an infrared thermometer to measure the return temperature. Heating circuits with a rapid temperature rise and higher return temperature are short circuits and need to be slowed down. The Basetech Mini 1 is a good option. You can place it directly on the pipe and get reproducible measurements. The absolute value is not as important as the difference between the individual temperatures, and for that, it works great.
Again, which heat pump has been installed? Is it a modulating heat pump?
How large are the heated rooms, how many heating distributors do you have? How many heating circuits and how are they divided?
Whether you can heat the bathroom with the heat pump alone can’t be assessed without this information.
What good is any warranty if after 5 years the compressor breaks down? You will have to pay for a new heat pump yourself then.
Don’t lose courage. If you stay on top of it now, you will have a well-adjusted, efficient heating system in a few weeks.
Since you don’t know the heating circuit lengths (and probably your heating installer doesn’t either), you definitely need an infrared thermometer to measure the return temperature. Heating circuits with a rapid temperature rise and higher return temperature are short circuits and need to be slowed down. The Basetech Mini 1 is a good option. You can place it directly on the pipe and get reproducible measurements. The absolute value is not as important as the difference between the individual temperatures, and for that, it works great.
Again, which heat pump has been installed? Is it a modulating heat pump?
How large are the heated rooms, how many heating distributors do you have? How many heating circuits and how are they divided?
Whether you can heat the bathroom with the heat pump alone can’t be assessed without this information.
What good is any warranty if after 5 years the compressor breaks down? You will have to pay for a new heat pump yourself then.
Don’t lose courage. If you stay on top of it now, you will have a well-adjusted, efficient heating system in a few weeks.
chewbacca12313 Dec 2019 16:16Daniel-Sp schrieb:
Again, which heat pump was installed, is it a modulating heat pump?
How large are the heated rooms, how many heating circuit distributors do you have? How are the heating circuits divided? Hey, I took some pictures of the heating circuit distributor. Part 1 is the ground floor, part 2 is the basement (bedroom, guest room, hobby room, and main bathroom).
The main bathroom (15sqm (160 sq ft)) is too cold, and the guest room (15sqm (160 sq ft)) is now too warm, even though it’s not set that way.
The installer wanted to reduce the flow from the master bedroom and increase it in the bathroom but that didn’t help at all.
I don’t actually know what kind of pump we have, modulating? Man, I feel really clueless. Sorry… Regards, Ina
D
Daniel-Sp13 Dec 2019 17:03Could you please list all the rooms per floor, including the size of each room and the number of heating circuits?
Do you have underfloor heating only in the bathrooms?
If you don’t mind, you can also share the floor plans of the levels.
The heating contractor should be able to tell you the model of the heat pump. What matters is the heating capacity of the heat pump and the heating demand of the house.
What is your current total flow rate?
More information would be helpful.
Do you have underfloor heating only in the bathrooms?
If you don’t mind, you can also share the floor plans of the levels.
The heating contractor should be able to tell you the model of the heat pump. What matters is the heating capacity of the heat pump and the heating demand of the house.
What is your current total flow rate?
More information would be helpful.
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