Hi need help with s plan using 3/4 link from non combi valiant have done my s plan still a wee problem, does no 4 boiler link go to no 10 in my centre with the m valves oranges. what about no3 from link am i right in thinking this is a permanant live anyway and is it required. my s/w returns from the stat and cyl stat go to each brown on m valves, I am using the factory fitted pump over run from boiler direct to pump. using 4/6 for ch/ hw from programmer each taking a live to each corresponding stat greys are together linked with no 1 live
s plan non combi boiler
- Thread starter philjc123
- Start date
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Greys to 3 Oranges to 4.
Not really as you are providing the switching voltage via the PCB and not the system's main wiring. It gives the boiler added protection.
It is a Vaillant after all.
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