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Room Thermostat Wiring

https://forums.diydoctor.org.uk/viewtopic.php?f=177&t=7313

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Room Thermostat Wiring

Posted: Sun Dec 23, 2007 6:07 pm
by horny_kez
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

Posted: Sun Dec 23, 2007 10:30 pm
by marrtin
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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