Talk:Boiler Evolution
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Maybe would be nice to do as a graph showing where various developments branched off e.g. lightweight heat exchangers from cast iron, combis from heating-only etc?
--John Stumbles 13:57, 21 February 2007 (GMT)
Anybody know when building regs changed obliging non-permanent pilot light designs? --John Stumbles 16:31, 21 February 2007 (GMT)
Somewhere before the 1/4/2005 upgrade to Part L. it must have been the inspriation for the retro fitting of electronic ignition to models like the Kingfisher and Mexico.