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Posted by HeatPro on October 18, 2004 at 13:42:58:
In Reply to: End Of Main Water Seal posted by Ted on October 18, 2004 at 13:19:45:
Yes, the condensate return should drop to the floor before it goes back up to the Hartford Loop nipple. That creates the seal to keep steam out of the return.
For very small systems there are alternative pipings:
http://www.hoffmanspecialty.com/pdf/submittals/hs-901a.pdf