On Thu, 18 Dec 2008 13:35:52 +0000, Chris Melluish wrote:

I dont understand why the pressure would drop to nothing. It is the hot
water expansion vessel, not the cenral heating one. The pressure in the hot
water tank cannot drop to below mains pressure. I will lose a bit of hot
water out of the overflow when it heats up, but is this a problem?

D'oh! Read your post wrong. Sorry.



--
John Stumbles -- http://yaph.co.uk

A: Because it messes up the order in which people read text.
Q: Why is top-posting a bad thing?