On Wed, 16 Feb 2005 06:08:37 +0000, John Rumm wrote:

Doctor Evil wrote:

circulation. Each pump can have its speed set to the needs of the zone.
There will be no parasitic circulation if each zone has its own flow and
return tapping off the store.

except you don't want to be running your heating off the store with a
modern boiler....

Hi John,

Why not - I thought thermal stores assisted the boiler by ensure long
efficient burns?

Tim