Standard Model: FD-M-R-A
FD-M-L-A
Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fireresistance rated walls and floors.
Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fireresistance rated walls and floors.
This device is actually used inside air transfer outlets and air ducts of the smoke control or air distribution system. It is specifically designed to automatically close whenever it senses heat. Additionally, it interrupts the migratory airflow, stops flames from spreading by obstructing its flow from the place on fire to the unaffected places. Fire Dampers are operated by a fusible device or a temperature sensor which typically provides signal to the actuator once the temperature reaches set limit. The actuator then moves the blades in closed position & shut off the fire from spreading in other premises. These devices are generally installed near the wall or the floor, right at the point where the duct penetrates the wall for retaining the integrity as well as the fire rating of the walls or the floor.
● Frame: 1.6mm (16 G) galvanized steel hat channel
● Blades: 1.6mm (16 G) galvanized steel 3 V groove
● Linkage: Concealed in frame
● Bearing & Axies: Brass bush pressed into frame 10mm square plated mild steel
● Jackshaft: Ø 12.7mm (Ø 1/2″) plated steel
● Jamb Seals: Stainless Steel
● Sleeve: 1 mm (20G) galvanized steel extended over frame
Actuator: UL Listing spring return 24V/230V electric actuator
Thermal Sensor: UL Listing T.R.D. of temperature rating 165°F
Limit Switch: For BMS open / close indication
Control Panel: For accurate information regarding the status of the damper and its operation capabilities
COSMOS UL Classified Fire Dampers are tested for the following performance test as per UL555 standards
01-Fire Endurance and Hose Stream Test
02-Operational Reliability Cycle Test
03-Salt Spray Exposure Test
● Fire Rating : 1-1/2 hrs. (90 min.)
● Max. Velocity : upto 2000 fpm (10.2m/s)
● Pressure : 4 inches water gauge (1000 pa)