this 18” damper is essential for protecting constant volume systems from bypass-related performance drops

always verify specific system surges do not exceed this threshold to prevent diaphragm damage

This specific Carrier motor is rated for Counterclockwise (CCW) rotation from the lead end

it is standard practice to synchronize the new motor with a module programmed specifically for your unit's model and serial number

controlled by the captive trippers on the 7-day dial

Lochinvar & A.O. Smith 100109680 Pilot 319825-402 this 18” damper is essentialThe Lochinvar & A. O. Smith 100109680 Pilot Assembly is a critical OEM replacement part engineered for precise ignition control in high efficiency residential and commercial gas water heaters and boilers. As a veteran grade pilot burner assembly, this component ensures consistent flame rectification and system reliability, preventing the nuisance lockouts often caused by carbon buildup or worn thermocouples. This kit features a robust thermopile and