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Tekmar 306P to Tekmar 261
Sorry for noob question, but I am trying to add some heating zones to what was a multi stage single zone hydronic system. I am inserting a Tekmar 306P to run pumps for each zone but am failing on the connection between between the boiler output of the 306 and the boiler demand on the 261. I believe I just need to add a 24v transformer but can't figure out the wiring.
Any help would be appreciated.