Lochinvar & A.O. Smith 100277758 Impeller 30067439-890 Enhances modulating damper control and

Enhances modulating damper control and parallel actuator synchronization

Key Benefits High Flow Capacity: The 4

Integrating this industrial gas solenoid ensures precise on-off control for natural gas or propane applications

maintaining optimal fluid or airflow regulation without the complexity of external bridges or legacy adapters

The technician must set the bypass flame (typically 1/8” high) after the burner has reached a stable temperature to ensure the flame does not extinguish at low settings

Lochinvar & A.O. Smith 100277758 Impeller 30067439-890 Enhances modulating damper control andThe Lochinvar & A. O. Smith 100277758 Impeller is a precision engineered 4. 75 inch plastic component designed for high efficiency hydraulic systems. As the 100277758 direct replacement for 100133559, this part ensures seamless compatibility with Lochinvar boiler pump systems and A. O. Smith water heaters. For technicians servicing high efficiency fire tube boilers or commercial water heaters, maintaining proper fluid velocity is critical for heat