Johnson Controls P499VAP-105K Pressure Transducer Kit R-410A Turning the screw clockwise increases

Turning the screw clockwise increases the flow rate required to actuate the snap switch

leading to excessive use of expensive auxiliary electric heat

Enhanced System Safety: Monitors airflow and draft conditions to prevent heating operation during hazardous venting failures or flue obstructions

Optimized Performance: Pre-balanced blower wheel and motor calibration reduces vibration

making it a robust upgrade for systems that struggle during peak summer loads

Johnson Controls P499VAP-105K Pressure Transducer Kit R-410A Turning the screw clockwise increasesThe Johnson Controls P499VAP 105K is a precision electronic pressure transducer engineered for demanding HVACR applications, providing a linear 0 to 10 Vdc output signal. Designed for high side pressure monitoring in commercial refrigeration and air conditioning systems, this kit features a 0 to 500 psi range with a robust 1 8" 27 NPT external thread fitting. As the direct replacement for the legacy P499VAP 105, it utilizes a stainless steel