In article ,
RichardS noaccess@invalid wrote:
this is the first time it has been known to happen, though (heating the
storage tank). They say that the immersion was left switched on for a
day, I have suspicions that it was far, far longer than that, though...

If the stat had stuck on, and it was left on without being used, the steam
from the boiling water will heat the header tank over time.

--
*One nice thing about egotists: they don't talk about other people.

Dave Plowman London SW
To e-mail, change noise into sound.