though upright mounting is recommended to minimize sediment buildup

specifically the H-1259B

Always check the required MBTU/h for your specific burner to ensure proper sizing

This control serves as the direct replacement for 239-45613-02

Belimo FSAF120A Actuator Refrigerant though upright mounting is recommendedThe Belimo FSAF120A Actuator is the engineered successor to the legacy FSAF120 model, specifically designed for high torque fire and smoke damper applications. This 120V spring return actuator delivers a robust 180 in lb of torque, providing a significant performance increase over the older 133 in lb versions. Built to withstand extreme conditions, it is rated for operation at 350F [177C] for 30 minutes, ensuring reliable fail safe positioning during