Hello everyone, I noticed that the supply line on the underfloor heating manifold has developed discoloration.
I’ve read about various causes, from harmless biofilm to rust or sludge buildup.
What seems strange to me is that only the supply line is discolored, while the corresponding return line is not. The heating water should have been mixed during the screed’s heating process, right?
Has anyone experienced this before or knows what it might be?
I’ve read about various causes, from harmless biofilm to rust or sludge buildup.
What seems strange to me is that only the supply line is discolored, while the corresponding return line is not. The heating water should have been mixed during the screed’s heating process, right?
Has anyone experienced this before or knows what it might be?
H
hampshire18 Feb 2020 09:56We had the same issue in our old house, then at some point flushed the system and refilled it with new "suitable" water. Quite a hassle.
H
hampshire18 Feb 2020 10:30I would address this issue early on, because in our case it only became apparent after more than 10 years, when some rooms no longer regulated as usual. The valves had been damaged.
I will raise this as a defect regarding the warranty at the handover of the house at the end of the week.
I will also request proof that the system was filled with the appropriate water according to the manufacturer’s requirements and the VDI guidelines.
Additionally, I will ask for documentation on material compatibility.
So, I’ll push this a bit and see what response I get.
If the heating technician is so confident that nothing will happen (following the motto “we’ve always done it this way, never had any problems”), it shouldn’t be a problem for him to confirm this in writing.
I will also request proof that the system was filled with the appropriate water according to the manufacturer’s requirements and the VDI guidelines.
Additionally, I will ask for documentation on material compatibility.
So, I’ll push this a bit and see what response I get.
If the heating technician is so confident that nothing will happen (following the motto “we’ve always done it this way, never had any problems”), it shouldn’t be a problem for him to confirm this in writing.
