In article
,
Tim wrote:
(it has two separate heat exchanging coils, one for
CH, one for HW. No diverted valves needed).

The diverter valve on my old system was still working fine when I replaced
the boiler for a system one which has its own. It was over 25 years old.

--
*On the other hand, you have different fingers*

Dave Plowman London SW
To e-mail, change noise into sound.