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?
Mycraft schrieb:
Have the expansion vessel installed in stainless steel and fill it with demineralized water. I guess this would then not only include the expansion vessel but also the Kagg mini-buffer tank that manufacturers often insist on...
There isn’t much detailed information since everything is integrated within the heat pump’s internal unit.
I do know for sure that it includes a heating expansion tank as well as a small mini buffer tank with just under 20 liters (5 gallons). I didn’t want the buffer tank, but the installer wouldn’t be convinced otherwise because the manufacturer requires it due to minimum flow rates and so on.
They would have installed the system without the buffer tank as well, but only if I had waived my warranty claims.
I do know for sure that it includes a heating expansion tank as well as a small mini buffer tank with just under 20 liters (5 gallons). I didn’t want the buffer tank, but the installer wouldn’t be convinced otherwise because the manufacturer requires it due to minimum flow rates and so on.
They would have installed the system without the buffer tank as well, but only if I had waived my warranty claims.
H
hampshire18 Feb 2020 17:34Bookstar schrieb:
What would you recommend there?Exactly that:Mycraft schrieb:
Have the expansion tank installed in stainless steel and fill it with demineralized water.Maybe a stupid question, but what’s the best argument to convince the heating engineer to use a stainless steel expansion vessel (I didn’t even know these were available in stainless steel)? I assume they will suggest flushing the heating circuits as a way to fix defects, and then refill the system properly? And after a year, the fluid will be contaminated again because the root cause (the expansion vessel) is still there? Then, in return, I’ll be charged for annual flushing and refilling as additional maintenance costs? And this will continue until the 2-year warranty period has passed?