Greenheck Fan Ventilation Hood SESMDR 501 User Manual

SESMDR-501  
Smoke Dampers  
Application  
UL 555S Leakage Class I  
Model SESMDR-501 is a severe environment 316SS leakage round  
smoke damper with extremely low leakage. The SESMDR-501  
has been qualified to 3,000 fpm (15.2m/s) and 4 in. w.g. (1 kPa) for  
operational closure in emergency smoke control situations, for use  
in HVAC system applications.  
Model SESMDR-501 meets the requirements for  
smoke dampers established by:  
National Fire Protection Association  
NFPA Standards 92A, 92B, 101 & 105  
IBC International Building Codes  
SBCCI Standard Building Codes  
New York City (MEA listing #260-91-M)  
Ratings  
California State Fire Marshall  
Leakage: Class I  
Listing #: 2330-0981:113  
Pressure: 4 in. wg (1 kPa) - differential pressure  
Maximum Velocity: 3000 fpm (15.2 m/s)  
Temperature: 350°F (177°C) depending on the actuator  
“UL CLASSIFIED (see complete marking on  
product)”  
“UL CLASSIFIED to Canadian safety standards  
(see complete marking on product)”  
Standard 555S (Listing #R13317)  
Standard Construction  
Frame/Sleeve: 20 ga. (1mm) 316 stainless steel integral  
sleeve  
Blades: Double skin 316 stainless steel (14 ga. [2mm]  
equivalent) round style blades  
Seals: Silicone rubber  
Axles: 12 in. (13mm) dia. 316 stainless steel  
Bearings: 316 stainless steel  
Size Limitations:  
Minimum Size:  
Maximum Size:  
6 in. diameter (152mm)  
24 in. diameter (610mm)  
Optional Features:  
• Electric or pneumatic actuators to accomplish smoke  
management and system functions.  
• Open/Close Indicator (OCI) for remote indication of blade  
position- not 316SS.  
D*  
• 14 ga. (2mm) or 16 ga. (1.5mm) integral sleeve  
*Dimension furnished approximately 18 in. (3mm) undersize.  
Specifications  
Damper actuators shall be (specified select one of the following)  
electric type for 120 (or 24) volt operation or pneumatic type for  
25 psi minimum (30 psi maximum) operation. Manufacturer’s  
submittal data shall indicate actuator space requirements around  
the damper.  
True Round Smoke Dampers meeting the following specifications shall  
be furnished and installed where shown on plans and/or as described  
in schedules. Dampers shall meet the requirements of the latest  
edition of NFPA 92A, 92B, 101 & 105.  
Dampers shall be tested, rated and labeled in accordance with the  
latest edition of UL Standards 555S. Dampers shall be UL labeled for  
use in dynamic systems. The damper shall have a dynamic closure  
airflow rating equal to or greater than the airflow at the damper’s  
installed location and a dynamic closure pressure rating of 4 in. wg  
(1 kPa).  
All UL555S operational ratings and leakage ratings shall be  
qualified for airflow and pressure in either direction through the  
damper. UL ratings shall allow for mounting damper vertically or  
horizontally.  
The Damper Manufacturer’s submittal data shall certify all air  
performance pressure drop data is tested in accordance with the  
AMCA certified ratings program for test figures 5.2, 5.3, and 5.5.  
Damper air performance data shall be developed in accordance  
with the latest edition of AMCA Standard 500-D.  
Dampers shall have a UL 555S leakage rating of Class I and a  
temperature rating of 250º F (121ºC) minimum. Dampers shall have a  
UL555S operational airflow rating equal to or greater than the airflow  
at its installed location and an operational pressure rating of 4 in. wg  
(1 kPa). Damper actuators shall be factory mounted and qualified for  
use with the damper in accordance with UL555S.  
Basis of design is Greenheck’s model SESMDR-501.  
Copyright © 2008 Greenheck Fan Corporation  
SESMDR-501 Rev. 7 June 2008  
 

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