I run a couple of TA UVR 1611 controllers. In the house of a family member it is installed to do logging and run the solar system. I installed one at this place because the heat pump system does not work very reliably and putting pressure on the one who installed it works so much easier if you have it documented. As time comes, the controller will take over further responsibilities, e.g. solar.
In the house of my father i take care of the heating but i am not onsite. I control this system using TA CMI, but i do the logging myself because it is so convenient.
All those UVR 1611 controllers have the CAN Logger attached. The logger pulls every two minutes the data from the controller, packages it and sends it via a messaging protocol to www.uhvauerr.de . Visit this site. It has a demo user to log in to an active system.
There is a service running which makes it easy to inspect the data. Now there is work waiting to be done to create more reports about cumulated time of active pumps, switched on burners etc. to judge the effectiveness of a renovation.