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View Full Version : Wiring diagram for hydronic air handler with ac separate transformers


magnum257
Oct 4, 2015, 08:42 AM
I'm working on an older hydronic air handler with 2 coils one heat one achas three wire on low voltage side a separate transformer for the heat side to energize the circulator. When in heat I have to disconnect the compressor wire as it pulls in the contactor. I think it's a simple thermostat wiring prob but cant find one that's right for the application. Any help would be appreciated. 120v single phase with 24v low voltage on control side. Thanks