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This conversion is critical for maintaining variable-rate modulation and high-fidelity communication between the primary control board and external BMS or system sensors
this 3-way control head is engineered specifically for direct-fired burners utilizing negative pressure (pull-through) applications
Its robust construction ensures exceptional corrosion resistance and the ability to withstand severe water hammer and freeze-up conditions without damage
replacing a motor with different HP or RPM specifications can lead to incorrect airflow
Lochinvar & A.O. Smith 100290327 Inducer Assembly 321702-401 This conversion is critical forThe Lochinvar & A. O. Smith 100290327 Inducer Assembly is a critical 115V, 3000 RPM combustion fan designed for high efficiency condensing boilers and water heaters. As a veteran grade OEM replacement, this assembly ensures the precise expulsion of flue gases and maintains the negative pressure required for safe burner ignition. It is the direct replacement for part 100144973, engineered specifically for Lochinvar Knight and A. O. Smith systems. This