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    Wiring for Vaillant Ecotec 438

    Hi, I'm after advice on wiring for an Ecotec 438 boiler, coupled with a Drayton Lifestyle heating control pack (mid position valve) but with a Honeywell CM907 room stat. Based upon the given Drayton circuit the standard RTS1 room stat is wired to terminals 2,4,5 on the JB and the boiler is wired...
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