Oilman you are correct as regards the Efel Harmony, but that is just one recomended way of fitting their stoves,-----mine is less than 12 months old-----and that is a recomended way of fitting not a regulation.
As regards your regulations, i can find nothing in there that says a chimney HAS to have a liner- stainless steel -installed into any chimney -EXCEPT where you use a factory made flue for a timber and plasterboard chimney.
I cannot find where it states you NEED TO HAVE a stainless steel flue liner installed into an existing/traditional--brick/concrete/concrete block/stone chimney for use with a stove--can you point this out please?
As regards your regulations, i can find nothing in there that says a chimney HAS to have a liner- stainless steel -installed into any chimney -EXCEPT where you use a factory made flue for a timber and plasterboard chimney.
I cannot find where it states you NEED TO HAVE a stainless steel flue liner installed into an existing/traditional--brick/concrete/concrete block/stone chimney for use with a stove--can you point this out please?