Lochinvar & A.O. Smith 100278106 Vent Damper 30067439-890 Optimized Startup: Maintains lubricant temperature

Optimized Startup: Maintains lubricant temperature to ensure proper viscosity and prevent liquid slugging during initial torque application

Always match the OEM-specified capacitance range for Copeland compressors

Genuine OEM construction ensures correct mounting hole alignment and electrical pin-out matches

the Reznor cutout device ensures the unit operates within specified safety parameters

Lochinvar & A.O. Smith 100278106 Vent Damper 30067439-890 Optimized Startup: Maintains lubricant temperatureThe Lochinvar & A. O. Smith 100278106 Vent Damper is a critical OEM replacement component designed specifically for 7 inch flue applications. Engineered for compatibility with RB RW225 270 boiler and water heater models, this automatic vent damper enhances system efficiency by preventing standby heat loss through the stack. When the burner cycle completes, the motorized actuator closes the baffle, trapping residual heat within the heat exchanger to