Lochinvar & A.O. Smith 100278092 Switch 318518-761 providing the factory-spec airflow required

providing the factory-spec airflow required to maintain head pressure within design limits

including 15A at 277VAC and up to 3HP at 600VAC

By monitoring flame rectification and safety limit switches

Key Benefits Dual-Voltage Compatibility: Operates efficiently on both 208V and 240V AC systems without performance degradation

ensuring exact set-point alignment without manual calibration

Lochinvar & A.O. Smith 100278092 Switch 318518-761 providing the factory-spec airflow requiredThe Lochinvar & A. O. Smith 100278092 Switch is a critical safety and operational component designed for high performance commercial boilers and water heaters. As a factory authorized OEM flow switch, this assembly ensures the burner circuit only energizes when adequate water velocity is detected, protecting the heat exchanger from dry fire conditions and thermal stress. The unit comes integrated with a durable brass tee specifically sized for CC120