ᐅ Thermal balancing – Initial measurements taken for adjustment

Created on: 3 Dec 2020 15:04
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Tx-25
Hello, I have started documenting the temperatures inside our house. I have attached a link with a table. What do you think about the data? The temperatures have remained fairly consistent under similar weather conditions. Overall, I am quite satisfied with the data. I have not made any changes since the hydraulic balancing.

The bedroom upstairs should be cooler. Can I simply reduce the flow rate there? Is there anything else I should consider given that we have very short loops (starting from 16 meters (52 feet) :/)?

In the last four days, we have ventilated very little because we have a central ventilation system. As a result, there hasn’t been much change in the values. Should I continue documenting and ventilate more aggressively and variably in the coming days to test how the rooms warm up? The heating curve is currently set to 2 out of 10. Does it need adjustment? Link description
seat883 Dec 2020 20:01
Tx-25 schrieb:

Hmm, we’ve never noticed any issues with the temperatures. It was exactly the same in the previous apartment.

@Mycraft: I took the measurements at the same time of day and in the same spot using different thermometers (switching between them). I can’t get more precise than that.

Of course, I could increase the flow rate now. But I want to optimize the heating system. Does it make sense to adjust other parameters instead?

@seat88: Don’t tell me you have more than 20 degrees in the bedroom as well. Holy crap

No, the bedroom window is always tilted open and it’s even colder than in your place. Otherwise, the average temperature is about 3 to 5 degrees higher. Sorry.
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lesmue79
3 Dec 2020 20:05
More than a 2-3 K temperature difference (if at all) is hardly achievable in a well-insulated new build, otherwise you start moving the heat around internally. The temperatures are similarly low in our case, but that is also because I had the whole house intentionally designed for a room temperature of only 20°C (68°F).
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Tx-25
3 Dec 2020 20:13
What is the downside of completely turning off the bedroom? I have disconnected all the ERRs entirely.
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lesmue79
3 Dec 2020 20:30
I’m not sure if this is nonsense, but I seem to remember reading in the pink HTD forum that you should set a minimum flow rate to prevent discoloration or biofilm buildup in the top meters (feet), which can cause them to become cloudy.
tomtom793 Dec 2020 20:32
19 degrees Celsius (66°F) in the bathroom—I would feel cold. Brrr.
Mycraft3 Dec 2020 20:55
lesmue79 schrieb:

to prevent discoloration/biofilm from forming in the top meters and causing them to become cloudy?

There should always be some flow. If the top meters become cloudy, it is usually due to system faults and low temperatures, rather than a lack of flow.
Tx-25 schrieb:

What is the downside of completely turning off the bedroom? I have disconnected all ERRs altogether.

What would be the purpose? You wouldn’t actually save anything that way. The comments about potentially inaccurate measurements were just a side note because usually the values show a curve that fluctuates somewhat.