Thanks for the compliments and encouragement Pat.
"I use a Resol DeltaSol BS Plus solar controller..."
I've got a lot to learn about controllers. Each manufacturer has so many models and options it takes some time to get familiar with them. I like the idea of varying pump speed to match conditions though. I'll spend some time researching the Resol lineup. Thanks for bringing them to my attention.
"I run the hot water from that tank out to a very long Runtal Radiator..."
More interesting stuff! It seems information is a little thinner on radiators than in floor systems so I'm all ears when I hear of a system using hot water, not steam, in radiators. Have you measured your water temperature at the radiator? You say you're successfully getting supplemental heat in a large room, that's encouraging.
"Have a great Holiday Season"
To you as well. Thanks again.
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