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Hi I have a bypass valve fitted between the cyclinder coil and just before the motorized valve, can anyone tell me if this is to ... a, control the temp\flow through the coil inside the cylinder b, like a manual ABV - to keep flow consistent when TRVs are closed on rads c, a safety feature...

Hi, I would like remove some banked earth in the garden and then I need to build a wall to hold back the earth but Im not sure how deep the footings need to be and whether I should go for single brick or breeze block construction? Also how long will I have to get the wall up before the...

Hi, I am having problems with 2 upstairs radiators not getting hot also the boiler is making a noise which sounds like a bird flapping around inside, I think this is what they call kettling ?. took problem rad off the wall and ran hosepipe through, replaced TRV with regular valve and re-hung...