Hi I'm attempting to install Hive - not to save money but I just want to do it myself! Details: Combi boiler with seperate hot water tank. Thermostat on wall underneath boiler (appalling placement but there you go). Timer box again underneath boiler. I've looked at the wiring documentation in the installation guide - Live and Neutral are fine - I also have hot water and heating off behind the existing timer box. My question is - the wires that go to the current thermostat are they effectively the hot water and heating off wires? If they are all I have to do is reroute the wires from the current thermostat to the Hive backing box and hey presto - if not then I'm confused . I've attached pictures of the current wiring. Any help gratefully received.