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two stem nuts
preventing air leaks and ensuring accurate sensing of the internal temperature
Avoid the reliability issues of universal "will-fit" rods and stick with the factory-spec component built for Model UDAP/UDAS performance
which is a standard industrial size but includes specific mounting characteristics common in heavy-duty HVAC blowers
Whether you are addressing a failed ignition or erratic blower behavior
Daikin-McQuay 349956812 Control R-410A two stem nutsThe Daikin McQuay 349956812 Control is a precision engineered differential pressure switch designed specifically for dirty filter alarm applications in commercial HVAC units. As an authentic OEM Daikin replacement part, this pressure control switch ensures your air handling units maintain design spec airflow by monitoring the pressure drop across the filter bank. For seasoned technicians, this is a non negotiable component to prevent static pressure
