"Christian McArdle" wrote in message
et...

Your main issue here is choosing a boiler that can maintain a low flow
temperature for the underfloor for efficiency reasons, whilst giving a
high
temperature to the hot water system and radiators. I believe the MAN
Micromat can be set up to do this, and Andy Hall may be able to advise on
such a system.

Is the Micromat a condensing boiler? I've traced the manufacturer's website
(http://www.man-heiztechnik.de/_html/...e/micromat.php) but all the
information is in German.

From what I read on this newsgroup, the condensing boiler will not operate
at its best efficiency if it has to heat water up to the temperature
required for conventional radiators. Any way around this for a mixed
underfloor/radiator solution? (Other than doubling the size of the rads!)