Lochinvar & A.O. Smith 100111317 Pressure Switch 340155-7024 Ensure the physical footprint and

Ensure the physical footprint and the 120V/24V specifications match your original part

you should typically see at least 250-350mV under load at the gas valve terminals to ensure the main burner solenoid stays engaged

ensuring stable combustion across the firing cycle

HVAC systems are calibrated for specific airflow resistance

Professional-grade construction minimizes signal drift

Lochinvar & A.O. Smith 100111317 Pressure Switch 340155-7024 Ensure the physical footprint andThe Lochinvar & A. O. Smith 100111317 Pressure Switch is a critical OEM safety component engineered for precise airflow verification in high efficiency water heaters and boilers. This normally open air pressure switch is calibrated to a fixed set point of 0. 20" WC (Water Column), ensuring the combustion blower is generating sufficient negative pressure before the ignition sequence initiates. As a genuine 100111317 replacement part, it provides the