In article ws.net,
Doctor Drivel wrote:
However, these only work (IIRC) if you have a two pipe system where
each rad is connected to the boiler flow and return. A single pipe
system where the rads are all in series would need some modifications.

Which is total senile nonsense.

Then perhaps you'd give some sensible advice to the OP. As if...

--
*If at first you don't succeed, avoid skydiving.*

Dave Plowman London SW
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