Hi, I hope someone can help. I’m hoping this isn’t a permanent problem. We’ve converted a gravity vented hot water system, into an unvented indirect hot water system to improve pressure in the house.
The previous cylinders are in the loft now they’re in the garage next to the boiler. We repurposed the flow pipe that’s made of 22 mm copper the previously led from the boiler to the loft and used the section from this to supply the hot water to the house. The problem is that when it flows through the large bath tap black bits come out everything is new apart from the flow section of the copper pipe it seem to have stopped from using the shower and base alone, but when you use the bath tap it restart. I think it’s residue within the closed flow return system within the pipes. it was doing the same in the shower and basin initially, but running them seem to clear it. The bath is being a bit more stubborn. The flow isn’t continuously black. It’s just intermittently black every time you switch off the tap and then restart it the first few seconds of black, and then a minute or so later, a big black gush and splutter
Does anyone know does this clear itself?
Is there something I can use to clean it?
Any suggestions please .
The previous cylinders are in the loft now they’re in the garage next to the boiler. We repurposed the flow pipe that’s made of 22 mm copper the previously led from the boiler to the loft and used the section from this to supply the hot water to the house. The problem is that when it flows through the large bath tap black bits come out everything is new apart from the flow section of the copper pipe it seem to have stopped from using the shower and base alone, but when you use the bath tap it restart. I think it’s residue within the closed flow return system within the pipes. it was doing the same in the shower and basin initially, but running them seem to clear it. The bath is being a bit more stubborn. The flow isn’t continuously black. It’s just intermittently black every time you switch off the tap and then restart it the first few seconds of black, and then a minute or so later, a big black gush and splutter
Does anyone know does this clear itself?
Is there something I can use to clean it?
Any suggestions please .