On Tue, 23 Nov 2004 07:07:07 -0800, Eithera wrote:

I have a Saunier Duval ISOFAST 28 E whose pressure varies from 2.4bars
(when on) to 0.4 bars (when off for some time). I have to frequently
fill in. Sounds like the vessel is packing up. Any idea what is the
normal life of a vessel and what causes its failure? Many thanks in
advance

See FAQ.

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html