The Belimo BFN230 is a fire damper actuator designed for open/close (on/off) control of fire dampers in HVAC ventilation systems. With 230 VAC supply, 9 Nm torque, and a 60-second actuation time, it is suitable for standard damper operation where reliable end-position control is required for fire safety operation and system interlocking.

In fire damper applications, the actuator is typically integrated as part of the damper assembly and coordinated with the damper’s fire safety mechanism (thermal release / spring closure depending on the damper design). Use the damper manufacturer’s installation method and the actuator wiring diagram to ensure compliance with local fire safety requirements.

Applications

• Fire damper open/close control in ventilation ductwork
• HVAC fire safety interlocks (actuator-driven damper positioning as part of a fire strategy)
• AHU / smoke control interface readiness (open/close command from control panel or fire interface module)
• Shutdown / isolation sequences where dampers must move to a defined position during an alarm condition