Lochinvar & A.O. Smith 100109941 Ignitor 321042-401 Stable Output: Maintains a steady

Stable Output: Maintains a steady gas-to-air ratio

With a pressure range of 100 to 400 psi and an adjustable differential from 35 to 200 psi

Key Benefits for the Contractor: High Thermal Capacity: Rated for up to 1

ensuring smooth operation during high-speed cycles

and the reinforced EPDM diaphragm supports high-temperature performance up to 160°F

Lochinvar & A.O. Smith 100109941 Ignitor 321042-401 Stable Output: Maintains a steadyThe Lochinvar & A. O. Smith 100109941 is a high grade Hot Surface Ignitor (HSI) engineered for precision ignition in high efficiency commercial and residential water heaters. This silicon carbide ignitor serves as the direct OEM replacement part for legacy numbers 9004566105 and 9004566115. Designed to withstand extreme thermal cycling, this component ensures reliable burner light off in Lochinvar Knight and A. O. Smith Cyclone series units. The