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View the thread, titled "How do I wire up this Honeywell T3R Thermostat?" which is posted in DIY Plumbing Advice on UK Plumbers Forums.

Hi, I live in a really remote part of the Highlands, so paying for a plumber (or electrician?) to do this will be brutally expensive, so I need to do it myself.
I have a Grant Combi 26e boiler.
I'm replacing the old thermostat with a new one.
Although the boiler is a combi, I think the old thermostat was wired up as an on/off (it has a bridge wire)? The old system worked fine, so unless there's good reason not to, I'd like to just keep it as an on/off.
You guys probably don't need the thermostat's wiring instructions, but I've included them just in case.
board.jpg
wires.jpg
IMG_20230915_160100.jpg


In the 2nd pic I've number the new thermostat's connector things 1 to 7. Providing I don't need any more wires from the boiler, could you guys tells me which number the: "Plug Earth", "Plug Live", "Plug Neutral", "Boiler Live", and the bridge go to?

-I'm not rich at the moment, but I'll happily make a small donation to charity for the help (I see others have done this). It would be cool if the site owners had one in mind, and had a link we could use...?
 

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How do I wire up this Honeywell T3R Thermostat?
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DIY Plumbing Advice
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Davemon,
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