Lochinvar & A.O. Smith 100112148 Switch 340155-7026 providing a restricted-fit seal to

providing a restricted-fit seal to prevent bypass

allowing for more accurate temperature control in large open commercial zones where the thermostat cannot be mounted in the ideal sensing location

vibration-dampening foundation for York air handler blower motors and 180-240 series DACW units

This unit is compatible with standard 2" 4-bolt flange sets

450 pounds per hour

Lochinvar & A.O. Smith 100112148 Switch 340155-7026 providing a restricted-fit seal toThe 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