Lochinvar & A.O. Smith 100208172 Rollout Switch 318973-401 often used to verify both

often used to verify both the initial pull of the inducer motor and the sustained static pressure during the heating cycle to ensure the system is venting safely

such as the BAYLPKT series

and Payne HVAC systems to ensure seamless integration

Engineered for modern high-pressure environments

commercial

Lochinvar & A.O. Smith 100208172 Rollout Switch 318973-401 often used to verify bothThe Lochinvar & A. O. Smith 100208172 Rollout Switch is a critical safety component designed for manual reset operation in high efficiency gas fired boilers and water heaters. Rated at a 250F trip temperature, this flame rollout limit switch monitors the burner enclosure for abnormal thermal conditions. If combustion flames spill out of the heat exchangeroften due to a cracked heat exchanger, blocked venting, or a failing inducer motorthe switch opens