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the FAN4078 utilizes a larger diameter
preventing condensation buildup on the exterior of the secondary drain pan
Common Questions Is this flue hood kit compatible with 48HJ series units
Key Benefits Precise Thermal Monitoring: High-sensitivity thermistor provides accurate inlet and outlet temperature readings to optimize system modulation
Operating on a reliable 24Vac power supply
Lochinvar & A.O. Smith 100112678 Flame Sensor 322838-753 the FAN4078 utilizes a largerThe Lochinvar & A. O. Smith 100112678 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in high efficiency boilers and water heaters. Designed for Lochinvar Knight and A. O. Smith B4940, B5930, B5940, and B7930 series units, this sensor monitors the burner's ionized path to ensure the gas valve remains energized only when a stable flame is present. Constructed with a high grade Kanthal or equivalent alloy rod
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