While searching for info elsewhere, I came across this site which has some great diagrams and installation instructions on a large range of appliances. My Apollo Fanfare boiler was there, fortunately.
Also appliances other than CH.
http://www.partsarena.co.uk/baxi/System/
You might need a download called Grafixview to view some of the pages.
Hope this is of use to somebody. Thanks for all your tips I have used....
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