Im trying to get a better view of my central heating and was wondering if/how I can improve on my graph to clearly display when the boiler is actually on (and how much gas) vs when hive is calling for heat.
My setup:
- Hive
- Hildebrand IHD/API
- Temp Sensors in some of the rooms
I have also installed the Hildebrand Glow Integration, I have not done anything with this yet.
I can easily get a fairly good picture, however I would like to include a line in the graph to show when gas is being used:
My guess is I need to create some sensors to capture the usage, but I am not sure where to start. 
Have you done something similar, if so please share.