Linking different heating systems

KayA_2

I have a Parkray solid fuel/multi fuel central heating/domestic water heating system with solar powered domestic water system. The Parkray is only 2-3 years old and I have just spent money re-lining the chimney. Whilst I like this heating system, I recognize that as I am getting older, the manual effort makes it less attractive. Hence, I am about to have installed a gas boiler (by British Gas) to take over most of the central heating/domestic water heating but do not want to abandon the Parkray system, but keep it as a back-up (for gas boiler break downs or interruptions in gas supplies) and "feature" system.

I know it is feasible to join up the systems, e.g using H2 panel, a heat store system, etc, but I am having problems finding any plumbers/ heating engineers prepared to advise/undertake this work. British Gas say they are not prepared to undertake the work, and I am concerned about back up to the H2 panel as it seems too specialized (only one person designing, installing and maintaining them) and too expensive!

mysterons

You can link 2 systems with something like a Dunsley Neutraliser/ Esse Centraliser but I suspect the system BG are installing will be combi type and not compatible with the current open vented arrangement.
Also I wouldn't be using British Gas for a new install, they're horribly expensive compared to a local guy.