On Sat, 12 Nov 2016 15:15:46 -0000 (UTC), Tim+
wrote:

It seems an awfully complicated way of meeting two very different demands.

Why it's just a matter of changing where the thermostats that trigger
the burner are placed except on the underfloor system a different
stat triggers on from the one that turns off the boiler?

Wouldn't two boilers be simpler/cheaper? Condensing multipoint for HW and
standard condensing boiler for CH?

At over £700 each?

AJH