That is interesting reading, things are never simple. When only electric UFH is used a.m. like for breakfast, then E7 might payoff. Certainly feels comfy underfoot on cold mornings. Thanks for post.
Hi, did you ever get to the solution. I tried all above, but intelligent stat knows best! Wanted only to use with Economy 7, but no good if turns on at any time of 24 HR cycle it sees fit to do so! Grumble.