Maintenance-Free Design: The non-linting aerated pilot reduces nuisance service calls by preventing dust and debris buildup in the primary air intake

optimizing the refrigerant flow for consistent cooling performance

You may hear a loud humming

Precise Fit: Standard 1 inch NPT connections allow for seamless integration with existing McDonnell & Miller water columns

though upstream strainers are recommended for maximum service life

Lochinvar & A.O. Smith 100278092 Switch R-407C Maintenance-Free Design: The non-linting aeratedThe 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