"Tim S" wrote in message
news
On Tue, 02 Nov 2004 19:25:51 +0000, IMM wrote:


"Andy Hall" wrote in message
...
But must be installed by an approved professional.

yep.

I've never been a fan of unvented systems (not that I've ever had one). I
just like the intrinsic safety inherent in a vented system. And
remembering to do the annual safety check... No, not for me...

The mains pressure is reduced. A heat bank using a plate heat exchanger may
be very much higher.