Re: beating my head trying to figure this out please help
Where did you put the temp switch for the fan?
Keep in mind that the temp rating of a tstat is the temp they start to open. Normal operating temps should run 10~20* higher.
If you have the fan switch in the tstat housing or in the radiator near the hot water inlet, would explain when your fan stays on as it will always see temps > 180 once things warm up.
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