SEFSDR-511
Combination Fire Smoke Dampers
Round Stainless Steel Blade
Application
UL 555S Leakage Class I
UL555 1 1/2 Hour Fire Resistance Rating
Model SEFSDR-511 is a severe environment 316SS combination fire
smoke damper with round style blade. The SEFSDR-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
SEFSDR-511 may be installed vertically (with blades running
horizontal) or horizontally and is rated for airflow and leakage in
either direction.
Model SEFSDR-511 meets the requirements for fire
dampers, smoke dampers and combination fire smoke
dampers established by:
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
Ratings
UL 555 Fire Resistance Rating
Fire Rating: 1 1/2 Hour
Dynamic Closure Rating: Actual ratings are size dependant
Maximum Velocity: 3000 fpm (15.2 m/s)
Maximum Pressure: 4 in. wg (1 kPa)
Listing #: 3225-0981:112 (fire)
Listing #: 3230-0981:113 (smoke)
UL 555S Leakage Rating
“UL CLASSIFIED (see complete marking on
product)”
Leakage Class:
Operational Rating: Actual ratings are actuator dependant
Maximum Velocity: 3000 fpm (15.2 m/s)
I
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555 (Listing #R13317)
Maximum Pressure: 4 in. wg (1 kPa)
Maximum Temperature: 350º F (177°C) —Depending on actuator
Standard 555S (Listing #R13447)
Standard Construction
Frame/Sleeve: 20 ga. (1mm) 316 stainless steel integral
sleeve
Blade: Double skin 316 stainless steel (14 ga.
[2mm] equivalent) round style blade
Seal: Extruded silicone rubber blade seal
Axle: 1/2 in. (13mm) dia. 316 stainless steel
Bearing: 316 stainless steel sleeve type
Fusible Link: UL listed 165ºF (74ºC) -not 316SS
Size Limitations
Minimum Size: 6 in. (152mm) diameter
Maximum Size: 24 in. (610mm) diameter
Optional Features
• OCI (Open closed indication switches) -not 316SS
• 165ºF (74°C), 212ºF (100°C), and 350ºF (177°C) RRL - not 316SS.
• TOR (remote override of 165º F (74°C) closure allows damper to
perform smoke management functions during a fire emergency) -not
316SS.
D*
• Electric or pneumatic actuators to accomplish smoke management
and system functions.
* Dimensions furnished approximately 1/8 in. (3mm) undersize.
• One retainer plate required, additional retainer plate available
• 14 ga. (2mm) or 16 ga. (1.5mm) frame/sleeve
Nut
Opening + 2 in. Min.
Retaining
Plate Assembly
Clamping
Minimum Wall/Floor Opening
Screw
= Nominal Dia. + 7/8 in.
Clamping Screw
1.00 in. Min. Typ.
Fasteners
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