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.
Ignore my previous questions about what type of 2-pipe system you have. You have a 2-pipe vented. I had read that, but forgot about that part of your post before I got back to it. As others have alre… (View Post)
I'm going to pose a question. How often has anyone who participates on this forum ever walked into a boiler room that still had all of its original accessory apparatus in tact, such as a return trap,… (View Post)
Before you get too far down this path, I would check to see if there are orifice plates installed in the unions of the supply valves on each radiator. Some of the folks who convert systems to operate… (View Post)