Thanks AC,
But sizing circ pumps is no different than any other pump App. Knowing what you want to do, the system constraints and the search for economic possibilities.
The hot water copper corrosion problem I learned from experience. Pin hole leaks developing in 10 year old copper. A Google search uncovered the high velocity hot water corrosion problem and tested velocity limitation solutions. A well defined temperature, velocity related problem with copper. Just a heads up to store away.
Not a HVAC tech, just an old school engineer. 100% DIY shows up undaunted limitations.
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