Johnson Controls C-9506-1 Positioner 30067439-890 but the unit must never

but the unit must never be operated permanently without a functioning 10728312 limit control

York S1-1PS0306 High Altitude Pressure Switch

System Stability: Safeguards remote temperature selector settings to maintain consistent discharge air temperatures

the unit staying in defrost mode for more than 15 minutes

also cataloged as VPA589-6SRD

Johnson Controls C-9506-1 Positioner 30067439-890 but the unit must neverThe Johnson Controls C 9506 1 Positioner is a high performance pneumatic damper actuator positioner and air switching cumulator designed for precise airflow regulation in demanding HVACR environments. Engineered for versatility, this direct acting device allows for a 2 12 PSI adjustable starting point and a 3 13 PSI adjustable operating span, providing the technical flexibility required for custom sequencing. This specific model is supplied without