On Sat, 8 Jan 2005 15:06:12 -0000, "Set Square"
wrote:


Thanks for that. Presumably they can only be used in vented - and not
sealed - systems?

Yes.

It would be pointless having one in a sealed system anyway, because
generally once the initial air and dissolved air is removed, there
should not be anything much more unless there is a joint which allows
air to be sucked in. The more likely situation is hydrogen from
corrosion.

For a sealed system you can use an automatic air vent, or there are
suitable air separators. I used both on my system, with a Reliance
air separator. This goes inline in the circuit and is a vertical
column with stainless steel screen inside to help separate out the air
and a relief valve on the top.

Take a look at www.rwc.co.uk

Unfortunately the search on this site isn't great but the info is
there. Do a search on the site using keywords "heating" and
"products" and you will get a clickable link to a page with a diagram
of a house.

Scroll down and you will find air separators. e.g. ASEP 192 103

They look like a robot's genitals.....

These devices collect the small amount of air that may gather and can
be periodically purged by unscrewing the gap and pressing the button
inside.



--

..andy

To email, substitute .nospam with .gl