Greenheck Fan SESMDR-501 Merkblatt

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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)
California State Fire Marshall
 
Listing #: 2330-0981:113
Application
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.
Ratings
 
Leakage:  Class I 
 
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
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: 
1
2
 in. (13mm) dia. 316 stainless steel 
 
Bearings:  316 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- not 316SS.
•  14 ga. (2mm) or 16 ga. (1.5mm) integral sleeve
SESMDR-501
Smoke Dampers
UL 555S Leakage Class I
“UL CLASSIFIED (see complete marking on 
product)”
“UL CLASSIFIED to Canadian safety standards 
(see complete marking on product)”
 
Standard 555S (Listing #R13317)
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.
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).
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.
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.
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.
Basis of design is Greenheck’s model SESMDR-501.
Copyright © 2008 Greenheck Fan Corporation
SESMDR-501 Rev. 7 June 2008
*Dimension furnished approximately 
1
8
 in. (3mm) undersize.
D*
Installation instructions available at www.greenheck.com.