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The pump has power to it and sounds like it's running but I think it has poor flow or dry.

There is a bleed on the return to the boiler. Is it a sealed loop? If the pump on the right was replaced what would the filling/bleeding procedure be?

I have a British gas 330 with a code f22 dry which is connected to a gledhill torrent thermal store. The pump on the right hand side of the picture is getting very hot, the tank has plenty of water in it. How does this pump system fill and bleed itself?

Did you go through with the bead insulation? As I'm considering it on a very similar property to yours.

Thanks Stem it is thermal store and functions as the above diagram, the oventrop blending valve was sticking. I replaced it today and is now working perfectly, thanks for the help guys.

It's a new issue, we've owned the house 5 years system has been fine until this morning. I've had different heating systems in other house but always found this layout to be confusing in its operation.

My hot water has stopped working the water is Luke warm at best with intermittent spells of warming up when tap is run for an extended period. The boiler is running fine with the tank and pipes hot. Would this system be described as an s plan system? Would the blue pump on the left be a hot...