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F rating allows for use in various saturated steam environments
use a manometer to check if the actual draft exceeds 0
This unit is rated for 600VAC insulation and provides reliable amperage monitoring across its calibrated scale
OEM Reliability: Genuine Carrier replacement part ensures exact fitment and restores original factory performance
This specific model features a manual operator
Lochinvar & A.O. Smith 100074640 Ignitor 340155-7024 F rating allows for useThe Lochinvar & A. O. Smith 100074640 Ignitor is a critical genuine OEM ignition component engineered for high efficiency condensing water heaters and commercial boiler systems. Built to survive the rigorous thermal cycling of modern hydronic equipment, this black box ignitor assembly provides the high voltage spark necessary for consistent burner ignition and reliable system startup. As a standard replacement for Lochinvar Knight boilers and A. O.