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expansion tank connection, incorrect and correct options

Options
hot_rod
hot_rod Member Posts: 28,129
Screenshot 2026-08-30 at 5.23.37 PM.png Screenshot 2026-08-30 at 5.26.57 PM.png

Pumping into the return of a boiler IF the expansion tank is upstream, suction side, of circulator

Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream