In article .com,
wrote:
That's the given, even if this is OK can it be right to be on both
systems and how could we have done this?

Sounds like you've managed to join the heating and potable water circuits
and you'll all die a horrible death.

--
*He who dies with the most toys is, nonetheless, dead.

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