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