SMDR-501

Smoke Dampers

UL 555S Leakage Class I

Application

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.

Ratings

Leakage: Class I

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.

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

Model SMDR-501 meets the requirements for smoke dampers established by:

National Fire Protection Association NFPA Standards 92A, 92B, 101 & 105

IBC International Building Codes New York City (MEA listing #260-91-M)

California State Fire Marshall 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)

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.

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).

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.

Installation instructions available at www.greenheck.com.

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.

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

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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Greenheck Fan SMDR-501 specifications Smoke Dampers

SMDR-501 specifications

The Greenheck Fan SMDR-501 is a state-of-the-art exhaust and supply fan designed for energy-efficient ventilation in commercial and industrial applications. This model stands at the forefront of air movement technology, making it an ideal solution for various settings, including warehouses, manufacturing facilities, and large retail spaces. One of its main features is the direct-drive motor design which not only improves efficiency but also reduces maintenance costs. The absence of belts and pulleys means that there are fewer moving parts that can wear out over time, enhancing the reliability of the system.

Another significant characteristic of the SMDR-501 is its advanced airflow performance. With a wide range of sizes and configurations, this fan can handle various air volume requirements, ensuring optimal performance no matter the application. It is engineered to deliver high static efficiency and can operate at low noise levels, making it suitable for noise-sensitive areas. The SMDR-501 incorporates a robust aluminum housing that is lightweight yet durable, designed to withstand rigorous use and challenging environments.

The fan is equipped with Greenheck’s latest technology, including electronically commutated (EC) motors, which provide superior energy savings while maintaining excellent control over airflow. These EC motors allow for variable speed operation, ensuring that air movement can be tailored to the specific needs of the facility throughout the day. This adaptability not only optimizes energy consumption but also enhances indoor air quality.

Another highlight of the SMDR-501 is its user-friendly controls, which allow for easy integration into building management systems. This capability provides facility managers with real-time monitoring and control, facilitating proactive maintenance actions that can further extend the lifespan of the fan.

In summary, the Greenheck SMDR-501 is engineered for efficiency and versatility, combining cutting-edge technologies and robust construction. Its advanced features, including direct-drive motor design, high airflow performance, and variable speed operation, position it as a leading solution for effective ventilation in any commercial or industrial environment. The SMDR-501 exemplifies Greenheck's commitment to innovation and energy efficiency, making it a wise investment for businesses looking to enhance their ventilation systems while reducing operational costs.