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Posted by HeatPro on September 13, 2011 at 19:15:23:
In Reply to: How do I connect a Taco SR-503 to a L4081B Aquastat? posted by Paul on September 11, 2011 at 09:55:26:
Such wiring is explained at the Taco, Honeywell, and Weil McLain sites. The wiring diagram comes with the boiler in the Installation and Operation manual. Consult such diagrams online and you will find the answer. It is very complicated to describe them in words.