Socdesign,
Sounds like the second cylinder has done exactly what mine did on the second go round, it was fine for a few weeks before starting to pop.
The popping over several months will start to get worse from my experience and you might get it popping even when no hot water is drawn off...
I know you posted your solution and explanation on the other thread Mickyg but I made this thread before I found the other thread who had the same problem as me.
Im not sure what the dynamic pressure is, with the problem being last year I cant honestly remember what the results were?
I didn't change the cold water controls when i swopped the cylinder, so a sticking nrv could be possible?
The expansion vessel is a 24L plus i fitted a 12L
Shame it didn't sort the noise out......
Yes I agree that the customer would not think too much about the lower pressure setting.
So you've put the pressure reducer on the out going hot?
The time when it was first happening, Gledhill had said they couldn't send anyone out to have a look because I had got the cylinder from my merchants at a good price so can't afford too!! which i think is a joke!!
I was out of ideas on what it could be so my only conclusion was to have the...