Primary-Secondary Pumping Made Easy!
by Dan Holohan
Looky Rating System: Violence 0/5, Love & Romance 0/5, Mental Health 0/5, Language 0/5, Substance Use 0/5, Fear / Horror 0/5, Fantasy / Supernatural 0/5, LGBTQ+ Representation 0/5.
Description
I was fortunate to have had the late, great Gil Carlson as one of my teachers. He invented primary-secondary pumping in the early '50s and went on to do many other things. Over the years, I've watched a lot of trial and error with primary-secondary heating systems. That's a shame because guesswork costs both time and money.