Having an oil boiler and a woodburner back boiler plumbed together so
that when the oil boiler is on it heats up the woodburner circuit (! -
woodburner fitted 7 years ago presumably by a qualified installer??),
I am looking into the Dunsley Neutralizer or SystemLink SystemZone
manifolds. Does anyone have any experience with these, or any other,
solutions to the problem - especially regarding effectiveness and any
recommendations on how to find an installer who knows what he's doing
and hasa heard of these manifolds (I live on the east Norfolk/Suffolk
border).

TIA

Keith