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doug lee
03-05-2008, 11:14 PM
in the book it talkes about an "air release valve" being in the up position? what? no picture, no discription of the release vale location.

admin
03-06-2008, 04:07 PM
doug lee - Almost all thermostats have an air release valve on the t-stat. It looks like a small steel ball that is in a cage or some have a hole with a T shape metal tab stuck through it. This is what you want to have in the up or high point position.