On Tue, 22 Jan 2013 17:16:22 -0500, Paul Franklin
wrote:



From your description, it sounds like the controls might be wired
wrong and the circulator is being stopped when the water reaches upper
limit. This is not only wrong, but is a potential safety issue.

You may want to try to find a tech who really understands HWH systems
and boilers to figure out why it's so messed up.


That was my guess too. Either wired wrong or a failed control.