snipped

So it looks like the way forward to be compliant is to put the towl
rails
onto the heating circuit and work out how much pipe would be needed to
lose
10 degrees of temp in a bypass loop and just have a big long pipe run
off
the bypass valve...

Paul


Yes !!! Someone's got the idea.

Pain in the butt though....
If it's just 4 metres it's not so bad; I've just got visions of this
stuffing great pipe looping it's way round the house to burn off the
required heat...

;-

Paul