"Dave Fawthrop" wrote in message
...
On 21 Jun 2006 23:11:53 +0200, The puppetmater of a figment of his
imagination Chris Bacon wrote:

wrote:
| While fitting a new radiator at friends house disovered there is
| only one tank. So obviously any inhibitor added to the system could be
| drawn off bit by bit via expansion into the hot water cylnder.Should
| I either leave the system un-dosed (as it always has been) fit a
| separate expansion tank ,theres easy access and plenty of room. Bearing
| in mind the crud in most headers its unlikely anyone would drink from a
| hot tap...but I think a mixer of crud and inhibitor would be Very
| bad thing indeed. Ta, everyone
|
|There should be absolutely no connection between the CH and
|the other side of things. Are you sure of your facts?

Untrue.

In the old old days people used primatic systems
http://www.rangecylinders.co.uk/prod...tic/index.html which had
only
one tank. The link indicates that they are still available and legal.
The
HW and CH circuits were kept separate by gravity.

By two air bubbles, in fact.

But CH water could
?leak? to the HW circuit, so I would not use inhibitor.

--
Dave Fawthrop dave hyphenologist co uk Google Groups is IME the *worst*
method of accessing usenet. GG subscribers would be well advised get a
newsreader, say Agent, and a newsserver, say news.individual.net. These
will allow them: to see only *new* posts, a killfile, and other goodies.