Welcome! Here are the website rules, as well as some tips for using this forum.
Geo-thermal control idea's
for the primary loop.
Steve & Brad,
Thanks for the advice, I think I will have him re-pipe the AHU directly off of the primary and I will suggest repiping the secondary RFH zones via a mix valve or if budget allows, proportional or injection mixing.
To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"