Replacing the old sensor typically restores consistent pilot operation

although vertical upright positioning is recommended to prevent sediment buildup in the core tube

This part is specifically engineered for Lennox HVAC models such as the AF90MPB

With a 1/2" NPT connection and a robust 4 Cv flow factor

For technical accuracy

Lochinvar & A.O. Smith 100112662 High Limit Els PW 29614 Replacing the old sensor typicallyThe Lochinvar & A. O. Smith 100112662 High Limit is a critical OEM safety control designed to prevent terminal damage in high output commercial and residential heating systems. Engineered for hydronic boilers and gas water heaters, this 165 degree limit switch monitors internal temperatures and breaks the electrical circuit if limits are exceeded. As a manual reset safety switch, it requires technician intervention to investigate the root cause of an