On Tue, 29 May 2012 09:58:31 +0100, dennis@home wrote:

Think of how much you can save by setting it to 50C which is more than
enough to work a shower or a bath.

Engage brain this is a 300l thermal store, there is no stored
domestic ho****er. Cold mains in, ho****er out at 50C (via
thermostatic mixer valve so you don't get 80C+ water out the taps...)
at at least 20l/min and on demand. If the store was only at 50C it
wouldn't be long before the domestic hot water was only domestic luke
warm water.

--
Cheers
Dave.