Model FSD-311V
Combination FIRE SMOKE DAMPERS
Steel Airfoil Blades
APPLICATION | UL 555S Leakage Class I |
Model | UL555 1 1/2 Hour Fire Resistance Rating |
nation fire smoke damper. High strength airfoil blades ensure the | Model |
lowest resistance to airflow in HVAC systems with velocities to 4000 | |
fpm (20.3m/s) and 4 in. wg (1.0 kPa). | dampers, smoke dampers and combination fire |
| smoke dampers established by: |
Ratings
UL 555 Fire Resistance Rating: |
|
Fire Rating: | 1½ hours |
Dynamic Closure Rating: Actual ratings are size dependent | |
Max. Velocity: | up to 4000 fpm (20.3 m/s) |
Max. Pressure: | 4 in. wg (1 kPa) |
UL555S Leakage Rating: |
|
Leakage Class: | I |
Operational Rating: | Actual ratings are size dependent |
Max. Velocity: | up to 4000 fpm (20.3m/s) |
Max. Pressure: | 4 in. wg (1 kPa) |
Maximum Temperature: 350°F (177°C)- depending upon | |
| the actuator |
Standard Construction | |
Frame: | 5 in. x 1 in. (127mm x 25mm) |
| galvanized steel hat channel with |
| reinforced corners. A low profile |
| head and sill are used on sizes less |
| than 17 in. (432mm) high to |
| maximize free area and |
| performance. |
Blades: | Double skin airfoil shape of |
| galvanized steel with full length |
| structural reinforcement. 14 ga. |
| (2 mm) equivalent thickness. |
Seals: | Extruded silicone rubber blade |
| seals. Flexible stainless steel jamb |
| seals. |
Closure Device: | RRL 165°F (74°C) |
Linkage: | Concealed in jamb. |
Axles: | 1/2 in. (13mm) dia. plated steel. |
Bearings: | 304 stainless steel |
Size Limitations: |
|
Minimum Size: | 6 in. W x 8 in. H |
Maximum Size- | (152mm W x 203mm H) |
| |
Single Section: | 50 in. W x 32 in. H |
| (1270mm W x 813mm H) |
Multiple Section: | 100 in. W x 32 in. H |
| (2540mm W x 813mm H) |
Optional Features
•OCI (Open closed indication switches)
•Electric or pneumatic actuators to accomplish smoke management and system functions.
•Transitions (R, C, O)
•POC retaining angles
•Momentary Switch
•Sealed transitions and sleeves
•RRL/OCI (Open closed indication switches)
•165ºF (74°C), 212ºF (100°C), 250ºF (121°C), 350ºF (177°C) RRL's available
•TOR (remote override closure allows damper to perform smoke management functions during a fire emergency.)
•PRV (pneumatic relief valve)
•Security Bars
•Sealed transitions and sleeves
National Fire Protection Association
NFPA Standards 80, 90A, 92A, 92B, 101 & 105
IBC International Building Codes
ICBO Uniform Building Codes
CSFM California State Fire Marshal
Fire Damper Listing
Leakage (Smoke) Damper Listing
New York City (MEA listing
“UL CLASSIFIED (see complete marking on product)”
“UL CLASSIFIED to Canadian safety standards (see complete marking on product)”
Standard 555 & 555S (Listing #R13317)
W*
H*
*W&H dimensions furnished approximately 1/4 in. (6mm) undersize.
