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Thanks very much - I know there are lots of posts on here, I only wanted to check my understanding. I'll take another look at the wiring tonight. Am I really just comparing the colour of the wires at the boiler to those on the thermostat? Am I right in thinking I only replace the thermostat...

hi, I'm looking to install hive on a Volkera Linea 726 boiler. There is a clock installed on the boiler and I have a Honeywell Thermostat on the wall. I believe it's best to leave the clock in place (permanently on) and simply install the thermostat? The existing thermostat has a red wire in...