It appears that the control circuit of the boiler is extra low voltage, maybe 24V and must not be connected tot he mains supply.

For most homes, we’ll be able to generate a forecast within seconds by linking your British Gas Smart meter account, and by using historical data from our Hive thermostat. I know the boiler end of the wiring is fine and my boiler is already set to constant as my existing receiver works just fine. I don't care about the temperature on the hall when I'm spending the rest of the evening sat in the lounge. Hive Support were initially very helpful, and sent out a plate, but unfortunately it was for a thermostat. This amount includes seller specified domestic postage charges as well as applicable international postage, dispatch, and other fees.You'll save 10% on your Hive Radiator Valve(s) today and you can cancel Hive Heating Plus at any time. In the unlikely event that the thermostat cannot be installed in your home, you can receive a full refund for your purchase (this is valid for 14 days from the point you receive the product or the day of your installation). Going by the two attached images (first is my current one, second is hive) it looks like a direct swap.

Heating Efficiency Alerts uses your thermostat data to help ensure your home is warming up efficiently. The Guide states that WR1 receivers, and UT2 or EMT2 timers are compatible, so I assume that they have compatible backplates which are the same dimensions, but have more space. Just to add a little closure to this, I've now installed a tado thermostat and I think I'll stick with that platform for now.

If, however, you’re new to Hive and we have no historical data to base your forecast on, we’ll enter a learning period that takes a minimum of 30 days.

You can also manage your heating using the Hive app so you’re only using the heating when you need to. I wanted to print my own custom frames for my Hive thermostat but there doesn't appear to be any models online so I decided to create my own in Fusion 360.Issue with HW not sparking boiler/pump in to action initially, but once hub/app etc all linked and logged in it works fine (coincidence or delay in system sync? If you have both Hive Heating Plus and Boiler IQ, we’ll be managing the alerts to make sure you don’t receive duplicate alerts. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance. Boiler IQ is a device that continuously monitors your boiler 24/7 and alerts you when your boiler fails to produce heat or hot water.

Unfortunately our engineers can't install a Hive Thermostat on solid fuel boilers (such as biomass systems or coal) and heat pumps. But when I take it off the wall the back is left attached to the wall and the batteries are exposed so not very aesthetic or functional. I want to swap my existing Honeywell BDR91 wireless thermostat receiver on my combi boiler for the Hive receiver. It's probably not entirely the purpose of the Hive, but it works really well like that for us and our heating bills aren't too bad. This is a UK and ROI specific subreddit, r/DIY has a lot of US Specific content, things like products to use, where to get them, laws and codes that don't apply to the UK.After my second conversation, it appears that there is no such thing as a Stand-Off Plate (referred to as 'SP') in the Hive Thermostat Installation Guide. You can also use the thermostat stand (available separately) to position it on a table or shelf within your home.