Lochinvar & A.O. Smith 100277835 Kit 321894-709 Common issues include moisture contamination

Common issues include moisture contamination from the heat exchanger or electrical wire harness corrosion

and is rated for 120V to 277Vac

the factory-specified replacement for the legacy 89M7601 part number

OEM Recommended: Recognized and recommended by major equipment manufacturers for post-burnout cleanup

tech-to-tech reliability depends on matching these exact electrical specifications to the system's control board requirements

Lochinvar & A.O. Smith 100277835 Kit 321894-709 Common issues include moisture contaminationThe Lochinvar & A. O. Smith 100277835 Kit is a critical Venturi High Modulation assembly designed for precision air to fuel ratio control in high efficiency condensing boilers and water heaters. Engineered for natural gas systems, this 24 mm venturi ensures consistent performance across the full turndown range, or 5: 1 firing rate, by precisely mixing gas and air before delivery to the radial fire burner. This OEM replacement part is essential for