Hi, I have a Baxi Eco Elite DS which I'm trying to instal Hive G1 Single Channel too. I have connected No1 on the Hive to No2 on the boiler and No3 on Hive to No1 on the boiler. The Hive seems to work, the light for the heating comes on when the temperature is raised above ambient but it doesn't fire the heating on the boiler. It's a new boiler with only the mechanical timer switch fitted. I've included some pictures. Any ideas please?