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Amber for flame
Use a 393691 kit for Natural to LP transitions or a 394588 kit for LP to Natural gas conversions
Built for durability and technical performance
Functionally identical to the 220736A/U
Lochinvar & A.O. Smith 100112148 Switch 322056-301 Amber for flameThe Lochinvar & A. O. Smith 100112148 Switch is a critical safety component designed for high efficiency water heaters and boilers. As a normally open pressure switch, it monitors negative air pressure created by the combustion air blower, ensuring the unit only proceeds to ignition once a proper draft is established. This genuine OEM replacement part is engineered to meet 2" WC specifications, providing the precision required to prevent hazardous gas
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