FSDR-511
Combination Fire Smoke Damper
Application
Round Steel Blade
Model FSDR-511 is a combination fire smoke damper with round style
blades. The FSDR-511 has been qualified to 3000 fpm (15.2 m/s) and
4 in. wg (1 kPa) for operation and dynamic closure in emergency fire
smoke situations. Model FSDR-511 may be installed vertically (with
blades running horizontal) or horizontally and is rated for airflow and
leakage in either direction.
UL 555S Leakage Class I
UL555 1 1/2 Hour Fire Resistance Rating
Model FSDR-511 meets the requirements for fire
dampers, smoke dampers and combination fire
smoke dampers established by:
Ratings
UL 555 Fire Resistance Rating
Fire Rating: 1 1/2 Hour
National Fire Protection Association
NFPA Standards 80, 90A, 92A, 92B, 101, & 105
IBC International Building Codes
New York City (MEA listing #260-91-M)
California State Fire Marshall
Dynamic Closure Rating: Actual ratings are size dependant
Maximum Velocity: 3000 fpm (15.2 m/s)
Maximum Pressure: 4 in. wg (1 kPa)
UL 555S Leakage Rating
Leakage Class:
I
Listing #: 3225-0981:112 (fire)
Operational Rating: Actual ratings are actuator dependant
Maximum Velocity: 3000 fpm (15.2 m/s)
Listing #: 3230-0981:113 (smoke)
Maximum Pressure: 4 in. wg (1 kPa)
Maximum Temperature: 350º F (177°C) —Depending on actuator
“UL CLASSIFIED (see complete marking on
product)”
Standard Construction
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555 (Listing #R13317)
Frame/Sleeve: 20 ga. (1mm) galvanized steel round
Blade: Double skin galvanized steel (14 ga.
[2mm] equivalent) round style blades
Standard 555S (Listing #R13447)
Seal: Extruded silicone rubber blade seals
Axle: 1/2 in. (13mm) dia. plated steel
Bearings: Stainless steel sleeve type
Fusible Link: UL listed 165ºF (74ºC) -not 304SS
Size Limitations
Minimum Size: 6 in. (152mm) diameter
Maximum Size: 24 in. (610mm) diameter
Optional Features
• OCI (Open closed indication switches)
• 165º F (74°C), 212º F (100°C), and 350º F (177°C) RRL available
• TOR (remote override of 165º F (74°C) closure allows damper to
perform smoke management functions during a fire emergency)
• Electric or pneumatic actuators to accomplish smoke management
and system functions.
• One retainer plate required, additional retainer plate available.
• 14 ga. (2mm) or 16 ga. (1.5mm) frame/sleeve
* Dimensions furnished approximately 1/8 in. (3mm) undersize.
Opening + 2 in. Min.
Nut
Clamping
Minimum Wall/Floor Opening
Screw
Retaining
Plate Assembly
= Nominal Dia. + 7/8 in.
1.00 in. Min. Typ.
Fasteners
Clamping Screw
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