Greenheck Fan Ventilation Hood SMDR 501 User Manual

SMDR-501  
Smoke Dampers  
UL 555S Leakage Class I  
Application  
Model SMDR-501 meets the requirements for  
smoke dampers established by:  
Model SMDR-501 is a round smoke damper with extremely low  
leakage. The SMDR-501 has been qualified to 3,000 fpm (15.2 m/s)  
and 4 in. wg (1.0 kPa) for operational closure in emergency smoke  
control situations, for use in HVAC system applications.  
National Fire Protection Association  
NFPA Standards 92A, 92B, 101 & 105  
IBC International Building Codes  
New York City (MEA listing #260-91-M)  
Ratings  
Leakage: Class I  
California State Fire Marshall  
Pressure: 4 in. wg (1.0 kPa) - differential pressure  
Maximum Velocity: 3000 fpm (15.2 m/s)  
Temperature: 350°F (177ºC) depending on the actuator.  
Listing #: 2330-0981:104  
“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) galvanized steel round integral  
sleeve  
Blades: Double skin galvanized steel (14 ga. [2mm]  
equivalent) round style blades  
Seals: Silicone rubber.  
Axles: 12 in. (13mm) dia. plated steel.  
Bearings: Oil impregnated stainless steel  
Size Limitations:  
Minimum Size: 6 in. diameter (152mm)  
Maximum Size: 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.  
• 14 ga. (2mm) or 16 ga. (1.5mm) frame/sleeve  
D*  
* D dimension furnished approximately 18 in. (3mm) undersize.  
Specifications  
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.  
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 operation (30 psi maximum). Manufacturer’s submittal data  
shall indicate actuator space requirements around the damper.  
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  
(1kPa).  
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 licensed 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  
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.  
500-D.  
Basis of design is Greenheck’s model SMDR-501.  
Copyright © 2008 Greenheck Fan Corporation  
SMDR-501 Rev. 7 June 2008  
 

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