"Andy Hall" wrote in message
...
On Fri, 22 Jul 2005 01:53:19 +0100, "Doctor Drivel"
wrote:


"Andy Hall" wrote in message
.. .
On Fri, 22 Jul 2005 00:20:26 +0100, "Doctor Drivel"
wrote:



No by-pass, which could go wrong and wreck your boiler, with thermal
store.

Now you really are scratching around.

Not at all. Also they open up and defeat the object of a condensing
boiler
and greatly raise the return temperature.

You know very well that an ABV is set to only open when the circuit
flows are stopped entirely.

The hall rad is balanced it may not pass enough flow for the boiler, so the
by-pass opens. Best avoid a by-pass and use a thermal store/heat bank and
an Alpha pump.

..."self abuse"! Lord Hall doth shout
...he heavily indudges, of this no doubt
...of this act he does hanker
...that's why his mates call him the DIY ******