On Thu, 23 Dec 2010 02:47:50 -0800 (PST) RobertL wrote :
You see this kind of thing a lot: a balanced flue has had the (inner)
outlet pipe extended to vent flue gases at some distance from the
inlet. Surely the purpose of a balanced flue is that the outlet and
inlet are close together so that local pressure variations affect
both the same way.

Do manufacturers really make kits to separate two?

Yes, Glow-worm do, and Keston boilers have separate inlet and outlet pipes
which can be in different locations (though not opposite sides of the
building)

http://www.glow-worm.co.uk/products/...anagement-kit/

--
Tony Bryer, Greentram: 'Software to build on' Melbourne, Australia
www.superbeam.co.uk www.eurobeam.co.uk www.greentram.com