Lochinvar & A.O. Smith 100074640 Ignitor 340155-7024 This specific model features a

This specific model features a manual operator

Can I use a generic pressure switch as a substitute

5 to 3-ton air handlers without impinging on airflow

Integrated circuit breakers provide dedicated protection for each transformer output

use a manometer to check if the actual draft exceeds 0

Lochinvar & A.O. Smith 100074640 Ignitor 340155-7024 This specific model features aThe 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.