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Hello, in need of some help please, bought a Nest 3rd Gen Learning Thermostat Kit, currently have an oil fired external combi boiler with a Honeywell Home Programmer and wired thermostat, the thermostat will become redundant and I need to replace the programmer with the new Nest heatlink, all good so far, wiring seems straight forward just a basic install for me.
Now, from the videos I have seen the feed wires for the heatlink comes from the boiler in most cases including the power, so usually boiler power to a switch, from switch tot he boiler, then from boiler tot he programmer, in my case the switch power comes into the programmer then there is a wire that goes from the programmer to the boiler outside.
Have attached a photo below, I am assuming I just need to do the exact same thing in the heatlink? So the grey mains wire goes to the old room thermostat so that will be scrapped but the wire from the switch live neutral and the wire live neutral going to the boiler both together in the same normal live an neutral terminals on the heatlink?
Thanks in advance, think I am way over thinking this but wanted to make sure before blowing the boiler up
Now, from the videos I have seen the feed wires for the heatlink comes from the boiler in most cases including the power, so usually boiler power to a switch, from switch tot he boiler, then from boiler tot he programmer, in my case the switch power comes into the programmer then there is a wire that goes from the programmer to the boiler outside.
Have attached a photo below, I am assuming I just need to do the exact same thing in the heatlink? So the grey mains wire goes to the old room thermostat so that will be scrapped but the wire from the switch live neutral and the wire live neutral going to the boiler both together in the same normal live an neutral terminals on the heatlink?
Thanks in advance, think I am way over thinking this but wanted to make sure before blowing the boiler up