Recent content by i386

Yes, the old system was gravity HW and pumped CH. The megaflo installer didn't touch any pipes underneath the floor, but from the surface it looks OK. but re your last concern, is there a way to identify this without stripping the floor boards? I tried, when turning the CH on, the water...

Hi, excuse my knowledge by what do you mean by "differential bypass"? :shock: We've checked and can be 100% sure that the zone valves are in the right direction.

yes the pump (inside the boiler in Megaflo systems) is still working and the internal bypass joining the IN/OUT of the boiler gets very hot. The water in the other pipes is still (no flow, as can be felt by temperature).

Thanks, but if this were the case, why it works when the CH is turned on? The CH and HW return pipes join very early and the joint is visible to me in the cylinder room. after that, it's just one pipe going underneath the floor. If a valve is stuck close, then the CH return would have been...

Hi there, Thanks for the reply - you mentioned something I've never heard of... indeed the house was recently bought by us and its piping underneath the floor is unknown to us. Your explanation sounds like quite possible though, but do you know how we can find this out or resolve this? And...

Hi forum, This problem has been scratching me for weeks; even the plumber/gas safe engineer doesn't have a clue after days of work attempting to find the root cause of, let alone a resolution to the problem. Recently I got a qualified CH installer to upgrade our home's CH system, from a...