Question about Honeywell AQ25142B Aquatrol Boiler Reset Control

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Which contacts do I connect the boiler to? I thought it was the TT, but I am not getting any voltage on them.

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Here is a link, that includes the wiring diagram:

It looks like the 'T-T' terminals match up with 'T-T' terminals on the Boiler Aquastat-- Do you see that control?-- and do you have wires between those controls.
Power to this Control Module is all the way to the left on the connector terminal board-- the ones that say:
R (1) C (2) - Power In

Also: Did you realize that this control is a modulating control-- Not just an 'On-Off' control?
This control has outdoor sensors, that modulate the temperature of the water temperature-- The warmer it is outside, the lower it sets the Hot Water Temperature-- thus saving fuel-- yet assuring that on very cold days, you still get Hot enough water to be comfortable in your occupied space.

Posted on Oct 17, 2013


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