Hi, I am wanting to fit a basic Sunvic TLX7501 thermostat to my Worcester Bosch 230 combi boiler. The wiring diagrams are a bit vague, The stat has three terminals labelled 3(C), 2(on) and 1(off), the boiler is just labelled 1, 2 and 3. Can anyone please confirm what goes to what?
Cheers
The terminals you require will be joined together with a link wire in the boiler. Remove the link and connect those two terminals to pins 2 and 3 on the thermostat.
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