On Thu, 01 Dec 2005 16:35:19 +0000 (GMT), "Dave Plowman (News)"
wrote:

-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.

Thanks to all who replied, I'll slow down the pump and bite the bullet and get
the whole lot sorted, I'm guessing that the pumping over is probably made worse
by having the upstairs rads all turned off ?


--
Geoff
www.anoraks.uk.net