Search results

hi, i have an old style central heating system, boiler, pump, 3 way valve. For ages now i have been trying to solve the reason behind bad knocking of the pipes when the heating starts up. Recently i changed over the pump which had finally packed in, this did not resolve the banging. What i did...

Hi, first time i have posted so hope i have done this the right way! I have had a few problems with my conventional central heating system since I moved into the house. I am trying to get my head round how it all should work. The only thing I can not understand is a small 10mm pipe which is...