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Is an external vent line required
Built with a high-quality bronze body with brass trim
a different expansion interface is required to ensure proper communication and safety logic
Key Benefits Enhanced Precision: Utilizing a platinum RTD element
you ensure the integrity of the boiler’s safety controls and optimize performance for residential and commercial heating loops
Lochinvar & A.O. Smith 100187858 Switch 324846-701 Is an external vent lineThe Lochinvar & A. O. Smith 100187858 Blower Prover Switch is a critical safety component designed for high efficiency gas fired boilers and commercial water heaters. This 1. 0" WC air pressure switch serves as a high limit safety device, ensuring the combustion air blower is generating sufficient airflow before allowing many Lochinvar Knight or A. O. Smith Cyclone models to proceed with the ignition sequence. Acting as a OEM replacement pressure
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