Dennis, put in an F&T trap on the outlet of the heater. No check valve, no vent. That should make it work fine with a condensate tank. BTW, I happen to have a Hoffman tank and pump that had about 4 years of use. It was removed when I put in the new boiler and went to a gravity return. It works great. It's a Hoffman WC-6-20B. It has a cast iron tank. I'd take $400 obo.
Wow! Thirty minutes is a VERY long time for steam to make it to the end of a main with an open valve. I am assuming it was a gate or ball valve and not a globe valve, which would have some restrictio… (View Post)