I have an air source heat pump heating system with a ventilation unit (Alpha Innotec KHZ 80) and manual room controllers in my new build.
What is the best way to control the temperature? During commissioning, I was advised to turn one room controller all the way up and set the others to the middle position. Then I should adjust the temperature by changing the heating curve up or down.
What should I do in rooms where I prefer it cooler or unheated (technical room, storage room, bedroom)? Should I turn the room controllers all the way down there?
Will the temperature be the same during the day and at night? According to commissioning, a nighttime setback is not recommended (due to inefficiency). How can I then keep bedrooms and children’s rooms cool at night?
What is the best way to control the temperature? During commissioning, I was advised to turn one room controller all the way up and set the others to the middle position. Then I should adjust the temperature by changing the heating curve up or down.
What should I do in rooms where I prefer it cooler or unheated (technical room, storage room, bedroom)? Should I turn the room controllers all the way down there?
Will the temperature be the same during the day and at night? According to commissioning, a nighttime setback is not recommended (due to inefficiency). How can I then keep bedrooms and children’s rooms cool at night?
K
Knallkörper7 Oct 2016 13:33oleda222 schrieb:
This is a matter of getting used to it, see Bieber for details.
It should be clear that you can lower the room temperature by opening a window when the outdoor temperature is suitable. However, your heating system will try its best to bring all rooms within the thermal envelope to the same temperature.Honestly, how do you come to that conclusion?
I wasn’t talking about feelings when I related the insulation values. I simply didn’t provide exact numbers because there are so many different options. An exterior wall made of 24 cm (9.5 inches) Poroton T18 with 140 mm (5.5 inches) of mineral wool insulation has an estimated U-value of around 0.2; an interior wall of 17.5 cm (7 inches) Poroton T18 has an estimated U-value of about 0.8. That’s a factor of 4 difference. The temperature gradient relevant for energy loss on the exterior wall can be up to 30°C (54°F), while the temperature difference between rooms is only around 2–3°C (4–5°F). That’s a factor of 10 difference.
The conclusion is that energy exchange between rooms certainly exists, but it is not "much greater" than the energy exchange between rooms and the outside environment, nor is it so large that different temperatures cannot be maintained.
You still need to consider the different surfaces, the door, as well as the floor/and possibly the ceiling (and thermal bridges). In my basement, I have adjacent rooms that are unheated, and they never get colder than 16°C (61°F), even though I didn’t insulate much underneath. Upstairs, without additional cold ventilation, I get less temperature difference.
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