Jobs & Education1 min ago
Cold Water Tank (again)
I posted a question re the overflow on my cold water tank on 14.12.05. I followed the advice given but my cold water tank still overflows. The valve is new and I've bent the float arm downwards near the float end so that the float stops the water about on the water mark line. I've put the system under load and watched the water fill the tank to the water level mark. After a couple of days though, there is water dripping from the overflow pipe. In the water tank there a what look like copper deposits. What else can I do to stop water dripping from the overflow?.
Answers
No best answer has yet been selected by andyjc. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.If you are happy the new valve is not leaking then the water must be coming from elsewhere. Either the system has been installed wrongly or the copper deposits might indicate a leaking heating coil in the hotwater cylinder. The central heating header tank would need to be higher than the main tank to do this. It could also be the cylinder overheating and forcing water up the air vent to the tank.
Do you have an old Primatic hot water tank where there is no other header tank for the central heating? You need to eliminate all the above possibilities.