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ok, I think you're right there - it's just the pipe is running in the opposite direction to the cylinder but without breaking up the whole floor I wouldn't know... if that is the purpose, then something's not working rigth - it takes a good minute to run hot downstairs and longer upstairs...

Hi, I have a raised floor in my kitchen, presumably to cover pipes not buried in foundation. I am reducing this slightly and pierced a 16mm (I am in France) copper pipe which I was not expecting to find :) I cut out the mid section as I would be burying this anyway and capped off the feed end...

if I were regular as clockwork for needing hot water every day then the timer would work. As I'm not, the pump would then be running when I don't need the water and as it's on a loop, I fear it's losing all its heat running around the system - hence the only on demand query....

Hi, my boiler is quite far away from my taps so someone installed a Grundfos pump to speed up the flow. When on, it all works fine but found that if left on for 20 mins or so, all the hot water (200l tank) goes. I guess this is because there is a loop back to the cylinder and the cycle is...