I did look at the nest but don’t have access to power where I want to mount the thermostat, also got a decent deal on the hive with latest 20% off on eBay
Good evening,
I purchased a single channel Mini Hive to replace my Center wireless thermostat on my combi boiler, below is a photo of the current wiring and wiring diagram for the Center but I'm unsure which terminals on the Hive I should connect the grey and black wires currently in A & B...