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Discuss fitting room thermostat to ferroli optimax in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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jonesey10

hello all,
i have fitted a sallus room thermometer to my ferolli optimax combi bolier.
it all seemed fairly straightforward apart from one thing, the wiring plugs.
i removed the old wiring plugs from the clock and noticed it was numbered 1, 2, 3, 5
on putting in the boiler control module i noticed it was numbered 1, 2, 3, 4. with 4 being switched live normally open.
there is a 5 slot but no terminal spade.
i understand the terminals are fairly standard so my question is do i connect plug 5 from the clock to terminal 4 of the boiler module? or do i try and move the terminal spade from slot 4 to 5 and connect the plug to that terminal.
i hope that all makes sense. Roy
 
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