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Posted by Ryan Smith on October 24, 2006 at 09:53:47:
I have a Burnham Revolution boiler. The system circulator is on the RETURN leg just above the boiler. I cannot get the system water temp up to my target, which is 140 degrees. The boiler water temp gets up to something like 200 degrees and the boiler cuts off, even though the system water temp only gets to about 110 degrees. The control unit (TEKMAR 260) is always demanding to fire the boiler, but the boiler cuts itself off when it hits its max.
I think the problem is that the Burhnam Revolution has the internal by-pass plumbing, and the location of my system circulator (as opposed to the internal boiler circulator unique to the Revolution) on the return side of the boiler results in the system pulling water primarily from the bypass rather than the actual hot boiler water.
I'd like to verify this is the problem before I relocate the circulator. Any help is appreciated. I don't want to go through all that work and find out that is not the problem.
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