Lochinvar & A.O. Smith 100109846 Limit Switch 318518-761 it provides reliable millivolt operation

it provides reliable millivolt operation (250mV to 750mV) without the need for external line voltage

Designed with a forged brass body and a nickel-plated stem

Its local flame sensing technology ensures stable burner operation by monitoring the flame rectification signal immediately after the ignitor de-energizes

this part is essential for resolving ignition failure codes or pressure fluctuations in commercial water heating systems

Does this ECM motor require external programming in the field

Lochinvar & A.O. Smith 100109846 Limit Switch 318518-761 it provides reliable millivolt operationThe Lochinvar & A. O. Smith 100109846 is a 90 150F M R limit switch engineered for high precision thermal protection in residential and commercial water heating systems. As a critical safety component, this manual reset thermostat monitors air or water temperature to prevent overheating conditions that can lead to equipment failure or hazardous operation. It is specifically designed for cross brand compatibility, serving as a direct replacement part