Reznor 193811 Pressure Switch 318423-701 this specific assembly includes the

this specific assembly includes the auto-reset switch and the corresponding mounting bracket for standard NPT installations

Technicians should check for proper DC voltage at the solenoid and use a manometer to verify that the offset pressure matches the rating plate specifications during the trial for ignition

Full Functionality: Restores complete access to Celsius/Fahrenheit switching

though R-22 remains a primary application for this specific configuration

This kit is the specific McDonnell & Miller 421-30 replacement part for any Series 25A

Reznor 193811 Pressure Switch 318423-701 this specific assembly includes theThe Reznor 193811 Pressure Switch is a critical safety component engineered for precision monitoring of combustion air and venting pressures in commercial and industrial heating systems. As a genuine Reznor OEM pressure switch, it features a Single Pole Double Throw (SPDT) configuration, allowing for versatile control of both normally open and normally closed circuits depending on the system's differential requirements. This specific model is equipped