Dated 2005 - but looks good reference stuff for specific manufacturers' boilers, programmers and system wiring.
"Domestic Central Heating Wiring Systs"
Or get the latest diagrams from Honeywell:
Yes - but the book "provide(s) a comprehensive reference manual for hundreds of items of heating and control equipment" having terminal connection data and wiring for the majority of manufacturers hardware as well as the Honeywell stuff.
Don't forget our own even nicer set:
Well done that man, that's a superb set, very useful.
Phil
Credit where it is due to Davey Oz who drew all of those! (I just uploaded it!)
He's the one I meant ;)
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