Reverse return

fxhvac1 · April 6

I’m working on a reverse return hydronic piping system and added a sketch for clarity. After the last radiator, should both the supply and return mains be capped, or just one of them?

Should I consider a one loop pipe since its only 4 baseboards ?

. Thank you

Jamie Hall · April 6

Don't really need a cap —those lines can just stop at the radiator!

Except… your diagram isn't a reverse return at all. It's a simple parallel. To make it a reverse return, the return line should start at radiator 1, then pick up the others in order, and THEN come back to the close spaced Ts with no connections.

hot_rod · April 6

the "dead end" method would require more piping.

Reverse return

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