Hello everyone.
As a first-time homebuyer, I have many questions. One that has been on my mind lately is this:
We have a KfW70 house with good insulation (16cm (6 inches) masonry and 18cm (7 inches) insulation), and underfloor heating powered by a ground source heat pump.
When I drop my little one off at kindergarten in the morning, I am always surprised that the tiles in the kindergarten’s entrance area feel noticeably warm.
Our tiles, for example in the living room, on the other hand, feel noticeably cold. The thermostat in the living room is set to 20°C (68°F), and it maintains that temperature well, which is good. But why do the tiles feel cold to the touch?
Is it because the kindergarten is not heated with geothermal energy and, on the other hand, is not insulated like our house?
Of course, the underfloor heating is meant to maintain the room temperature (which it does) and not to warm your feet. But what explains the "noticeably cold tiles" anyway? Our heating system obviously doesn’t have to work as hard because of the good insulation.
An explanation would definitely help me feel more at ease.
As a first-time homebuyer, I have many questions. One that has been on my mind lately is this:
We have a KfW70 house with good insulation (16cm (6 inches) masonry and 18cm (7 inches) insulation), and underfloor heating powered by a ground source heat pump.
When I drop my little one off at kindergarten in the morning, I am always surprised that the tiles in the kindergarten’s entrance area feel noticeably warm.
Our tiles, for example in the living room, on the other hand, feel noticeably cold. The thermostat in the living room is set to 20°C (68°F), and it maintains that temperature well, which is good. But why do the tiles feel cold to the touch?
Is it because the kindergarten is not heated with geothermal energy and, on the other hand, is not insulated like our house?
Of course, the underfloor heating is meant to maintain the room temperature (which it does) and not to warm your feet. But what explains the "noticeably cold tiles" anyway? Our heating system obviously doesn’t have to work as hard because of the good insulation.
An explanation would definitely help me feel more at ease.
C
crazy517021 Nov 2014 19:13The topic can be closed
Today, we spoke with someone from the plumbing team who was knowledgeable and not just installing. Based on their advice, we opened all flow meters (for every room), so now there is proper flow. The rooms are pleasantly warm.
I just hope—for clarification on Monday—that all flow meters can be fully opened (allowed/required). Or should not all be completely open?
Thanks to everyone for the support
Today, we spoke with someone from the plumbing team who was knowledgeable and not just installing. Based on their advice, we opened all flow meters (for every room), so now there is proper flow. The rooms are pleasantly warm.
I just hope—for clarification on Monday—that all flow meters can be fully opened (allowed/required). Or should not all be completely open?
Thanks to everyone for the support
D
DerBjoern23 Nov 2014 22:04Musketier schrieb:
ok...we have that too. But the flow is only given when the actuator is open, right?Yes, exactly
C
crazy517026 Nov 2014 16:22You won’t believe it, but my wife says it’s too warm.
Should I lower the heating curve overall, or just reduce the slope?
Should I lower the heating curve overall, or just reduce the slope?
You won’t be able to notice what needs to be adjusted if the outdoor temperature remains relatively constant.
Personally (just a layman’s opinion), if I were in your position, I would first try reducing the room thermostats, then, if necessary, shift the heating curve parallelly, and only finally adjust the slope. However, this requires observing over a longer period. I have been monitoring since August without making significant changes.
Is it really too warm, or does it just feel oppressive due to high humidity?
At the moment, we are also heating some rooms more than necessary to reduce the humidity from the new building.
Especially now, with the dry and cool weather, this works really well.
Personally (just a layman’s opinion), if I were in your position, I would first try reducing the room thermostats, then, if necessary, shift the heating curve parallelly, and only finally adjust the slope. However, this requires observing over a longer period. I have been monitoring since August without making significant changes.
Is it really too warm, or does it just feel oppressive due to high humidity?
At the moment, we are also heating some rooms more than necessary to reduce the humidity from the new building.
Especially now, with the dry and cool weather, this works really well.
C
crazy517027 Nov 2014 12:23Then I will test the parallel shift when it gets colder (so start from the curve on the left and reduce evenly until the end on the right, correct?).
Our room thermostats are supposed to remain fully open at all times (according to Junkers).
Our room thermostats are supposed to remain fully open at all times (according to Junkers).
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