In article ,
Geoff wrote:
Should water recirculate thru the header tank ?

No.

I ask as I was up in the loft last night and every time I could hear the
boiler fire up for the heating, what looked like a overflow pipe
starting trickeling hot water into the header tank.

It's called pumping over, and is a bad thing since it introduces air into
the system causing corrosion.

Try reducing the pump speed. If the upper rads don't get hot after this,
the system probably needs balancing. See FAQ.

--
*Learn from your parents' mistakes - use birth control

Dave Plowman London SW
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