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cdru
Go Colts
Premium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:7
reply to whizkid3

Re: Furnace -- missing water

said by whizkid3:

Single-pipe steam is not sealed. As the heated steam rises, it pushes air out through the system via vent valves located at each radiator.

Thanks. I guess I thought steam just eventually rose, condensed, and ran back down. Probably works a little faster if the room temperature air can just be pushed out instead.