Lochinvar & A.O. Smith 100208391 Pressure Switch 322057-301 ensuring the branch circuit meets

ensuring the branch circuit meets NEC requirements for HVAC electric heater kits

OEM Standards: Guaranteed physical fit and electrical compatibility with York S1-025-27747-018 systems

the T-4000-3139 is a blank "no-window" model designed for concealed applications where temperature readings and setpoint adjustments are managed by authorized technicians only

featuring updated materials while maintaining identical electrical specs and the 18" capillary length

Lochinvar & A.O. Smith 100208391 Pressure Switch 322057-301 ensuring the branch circuit meetsThe Lochinvar & A. O. Smith 100208391 Pressure Switch is a mission critical safety component designed for precise pressure monitoring within high efficiency boilers and water heaters. Engineered to meet rigorous OEM specifications, this 0. 21" W. C. air pressure switch functions as a blower prover, ensuring the combustion blower is generating sufficient airflow before allowing the ignition sequence to proceed. By supervising the differential pressure