it is specifically designed for 24 VAC circuits

and Richmond power-vented units

flame signal

it offers multiple ignition attempts to ensure flame establishment

Belimo FSNF24 Actuator Freon it is specifically designed forThe Belimo FSNF24 is a fire and smoke damper actuator engineered for UL555 and UL555S applications. This spring return actuator provides 70 in lb of torque, ensuring reliable fail safe operation in life safety systems. Operating on 24 VAC, the unit utilizes a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC) to maintain constant torque and speed regardless of load variations. Designed for quick response smoke control,