ᐅ 3 underfloor heating circuits in the bathroom, 1 not working, what should I do?
Created on: 6 Dec 2018 07:30
K
KingSong
Hello everyone,
We have now been living in our new house for a week. Our main bathroom is equipped with underfloor heating consisting of 3 heating loops. The spacing of the heating pipes is 5cm (2 inches). Unfortunately, I noticed that one of the heating loops is not warming up, and it happens to be the one under the toilet :-(
What I have tried so far is setting all 3 loops on the manifold to the maximum flow rate, currently at 4 liters per minute (1 gallon per minute). The ERR function is deactivated. The room temperature setting on the heating system itself (heat pump) is set to 22°C (72°F).
What can be observed is that the floor areas with the other 2 heating loops are warming up, but the tiles above the 3rd heating loop remain completely cold. The building handover has already taken place, but the heating system was accepted on the condition that the heating itself works properly, while the heat distribution still needs to be assessed.
Does anyone have any ideas on what else I could try? I assume I can rule out a kinked pipe in the heating loop if I see visible flow on the related flow meter, right?
Thanks in advance,
Best regards
We have now been living in our new house for a week. Our main bathroom is equipped with underfloor heating consisting of 3 heating loops. The spacing of the heating pipes is 5cm (2 inches). Unfortunately, I noticed that one of the heating loops is not warming up, and it happens to be the one under the toilet :-(
What I have tried so far is setting all 3 loops on the manifold to the maximum flow rate, currently at 4 liters per minute (1 gallon per minute). The ERR function is deactivated. The room temperature setting on the heating system itself (heat pump) is set to 22°C (72°F).
What can be observed is that the floor areas with the other 2 heating loops are warming up, but the tiles above the 3rd heating loop remain completely cold. The building handover has already taken place, but the heating system was accepted on the condition that the heating itself works properly, while the heat distribution still needs to be assessed.
Does anyone have any ideas on what else I could try? I assume I can rule out a kinked pipe in the heating loop if I see visible flow on the related flow meter, right?
Thanks in advance,
Best regards
Unfortunately, I can’t answer that for you either, as I’m not an expert. We have two heating loops in the guest bathroom on the ground floor for a 6m² (65 sq ft) bathroom. The bathroom upstairs, which is being discussed here, has 11.2m² (120 sq ft) of piped surface. The total area of the bathroom is 14.8m² (160 sq ft).
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Purely based on the planned lengths, someone participated here. Everything is between 60 and 100 meters (197 and 328 feet). Not too short and not too long, this keeps the pressure loss within limits without causing a hydraulic short circuit. That is why three loops were created in the bathroom.
That was the only part where he actually put some thought into it... I think using 200mm (8 inches) piping in the rooms is too large for a new build, while 50mm (2 inches) in the bathroom is too small. I can’t recall ever encountering a 50mm (2 inches) installation spacing. You can definitely overdo it. With a 100mm (4 inches) spacing, he could have easily covered the bathroom with a single loop.
Of course, the bathroom loop would be longer than the ones in the rooms, but that’s exactly what hydraulic balancing is for.
Setting aside whether the individual loops make sense, I would just call the heating engineer and explain the problem. Regardless of the distance, he has (and wants to take) responsibility for his work.
Of course, the bathroom loop would be longer than the ones in the rooms, but that’s exactly what hydraulic balancing is for.
Setting aside whether the individual loops make sense, I would just call the heating engineer and explain the problem. Regardless of the distance, he has (and wants to take) responsibility for his work.
We deliberately chose a spacing of 50cm (20 inches) to achieve a comfortable and higher temperature in the bathroom without additional heating, compared to the other rooms.
As mentioned, I cannot call in the heating technician because:
a) he is not my contractual partner but the general contractor (GÜ) is
b) he did not install the underfloor heating but another company that also handled the screed and so on (also through the GÜ)
c) the heating system itself is running
As mentioned, I cannot call in the heating technician because:
a) he is not my contractual partner but the general contractor (GÜ) is
b) he did not install the underfloor heating but another company that also handled the screed and so on (also through the GÜ)
c) the heating system itself is running
C
chand19867 Dec 2018 09:50You need to go through your contract partner so they send someone with the proper expertise for this case—apparently the screed company from your point b).
The problem is that with a remote diagnosis that’s more or less guesswork, a blockage in the heating loop cannot be ruled out. The valve shows a full water level behind it, yet nothing heats up in the loop, and it obviously isn’t due to the actuators. A specialist company needs to handle this, in my opinion.
The problem is that with a remote diagnosis that’s more or less guesswork, a blockage in the heating loop cannot be ruled out. The valve shows a full water level behind it, yet nothing heats up in the loop, and it obviously isn’t due to the actuators. A specialist company needs to handle this, in my opinion.
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