Johnson Controls P70DA-2 Pressure Control R-410A specifically within gas-fired water heaters

specifically within gas-fired water heaters and air handler units

Check for a blocked flue

This configuration includes a 1/8" MPT connection below the hex

with a spring return time of less than 25 seconds at ambient temperature

fan speed adjustment

Johnson Controls P70DA-2 Pressure Control R-410A specifically within gas-fired water heatersThe Johnson Controls P70DA 2 is a heavy duty single pole high pressure control engineered specifically for HVACR ammonia applications. This SPST pressure switch features a 1 4 inch female NPT pressure connector and provides a reliable cut out range from 50 to 450 psi. Designed for critical safety monitoring, the unit operates on an open high close low logic with a manual reset lockout, ensuring the system remains offline until a technician inspects