Help with Nest Thermostat 3rd gen All aspects of plumbing questions and answers, help, tips and information

[miguew]

Hi all,

I want to replace my current thermostat with the Nest Thermostat, but wire labels don't match.

My boiler is Worcester Greenstar 24i Junior combi boiler, which is on the back of the wall where the thermostat is.

Pictures here: https://www.diynot.com/diy/threads/anot ... on.589322/

Thanks all for your help!