Lochinvar & A.O. Smith 100208172 Rollout Switch 318973-401 it specifically replaces the Honeywell

it specifically replaces the Honeywell WV8840B5069 found in many A

specifically designed for these high-output commercial applications

the Trane CNT01537 is the updated manufacturer part number and is functionally identical to the 1537 as a drop-in replacement

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

and Payne HVAC systems to ensure seamless integration

Lochinvar & A.O. Smith 100208172 Rollout Switch 318973-401 it specifically replaces the HoneywellThe 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