Fire Dampers > Type A Multi Blade Fire Dampers

Type A Multi Blade Fire Dampers

Carnes Type A multi blade fire dampers are UL and ULC listed for installation in walls, floors and partitions with a fire rating of 1-1/2 or 3 hours.  The type A fire damper is constructed with the damper framed the same size as the duct size and includes the blade stack and edge seals within the air stream.  Typical installation is in a low pressure (less than 3" w.c.) system

Fire dampers for use in static systems are used in duct systems and penetrations where there is little to no airflow when the damper closes.  Carnes Type A static multi blade fire dampers may be installed vertically or horizontally in static HVAC systems that automatically shut down in the event of a fire.

Fire dampers for use in dynamic system are required if the HVAC systems will be operating with the fans on during a fire incident.  Dynamic system dampers are expected to be able to close against the air velocity and pressure produced by the system fan.  Carnes Type A dynamic multi blade fire dampers may be installed vertically or horizontally in dynamic HVAC systems that continue to run in the event of a fire.

Multi blade fire dampers are available with either a hand quadrant operator, electric actuator (120v, 230v or 24v) or pneumatic actuator (25 psi).  Carnes multi blade fire dampers can be supplied with either a side plate or optional damper sleeve.

Model EAIA - Type A static curtain fire damper, multi blade (crimped 3V)

Model EAJA - Type A static curtain fire damper, multi blade (airfoil)

Model EHIA - Type A dynamic curtain fire damper, multi blade (crimped 3V)

Model EHJA - Type A dynamic curtain fire damper, multi blade (airfoil)