Damper Sizing Information

Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size. The following figures show maximum damper section size and assembly configurations for multi-section dampers.

Double Section

Single Section

50 in. (1270mm)

50 in. (1270mm)

32 in. (813mm) 64 in. (1626mm)

32 in. (813mm)

Transitioned Damper Dimensions

D*+ 2 in. (

 

 

51mm) +T

s

 

 

 

When a fire/smoke damper is being used in conjunction with round or oval ductwork, the FSD-312 can be supplied in a factory sleeve with round or oval transitions on both ends of the sleeve. Dampers should be ordered to the duct dimensions. Drawings below show over- all damper size.

 

 

 

W*+

2 in. (51mm)+T

 

 

 

 

 

s

W*+ 2

in. (51mm)+T

s

 

 

 

 

 

 

 

 

 

 

 

 

 

D* + 2 in. (51mm)+T

 

 

 

 

 

 

 

 

s

 

H*+ 2 in. (51mm)+T

s

 

 

 

 

 

 

 

 

21/8 in.

 

 

 

 

 

 

 

(54mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16 in. (406mm)

D*

16 in. (406mm)

 

Min.

 

Min.

TYPE R

Specifications

 

H* + 2 in. (51mm)+T

s

 

H*

21/8 in.

 

 

 

(54mm)

 

 

W*

 

 

16 in. (406mm) Min.

TYPE O

21/8 in. H*

(54mm)

W*

TYPE C

*These dimensions are furnished approximately 1/4 in. (6mm) undersize, except round and oval dimensions which are approximately 1/8 in.(3mm) undersize.

Ts = (2)(Sleeve Thickness)

Combination Fire Smoke Dampers meeting the following specifica- tions shall be furnished and installed where shown on plans and/or as described in schedules. Dampers shall meet the requirements of NFPA 80, 90A, 92A, 92B, 101 & 105 and further shall be tested, rated and labeled in accordance with the latest edition of UL Standards 555 and 555S. Dampers shall have a UL555 fire rating of 1½ hours and be of low leakage design qualified to UL 555S Leakage Class II.

Each damper /actuator combination shall have a UL555S elevated temperature rating of 250° F (121°C) minimum and shall be opera- tional and dynamic rated to operate at maximum design air flow at its installed location. Each damper shall be supplied with an appro- priate actuator installed by the damper manufacturer at the time of damper fabrication. Damper actuator shall be (specifier select one of the following) electric type for 120 (24 or 230) volt operation or pneumatic type for 25 psi minimum (30 psi maximum) operation.

Damper blades shall be of the double skin airfoil type and shall have an equivalent thickness of 14 ga. (2mm) . Damper frame shall

be galvanized steel formed into a structural hat channel shape with reinforced corners. Bearings shall be sintered bronze sleeve type rotating in extruded holes in the damper frame. Blade edge seals shall be silicone rubber designed to inflate and provide a tighter seal against leakage as pressure on either side of the damper increases. Jamb seals shall be stainless steel compression type. Blades shall be completely symmetrical relative to their axle pivot point, present- ing identical resistance to airflow in either direction or pressure on either side of the damper.

Damper must be rated for mounting vertically (with blades running horizontal) or horizontally and be UL 555S rated for leakage and airflow in either direction through the damper. Each damper shall be supplied with a 165°F (74°C) RRL. Testing and ratings to be in ac- cordance with AMCA standard 500-D.

The basis of design is Greenheck Model FSD-312.

Copyright © 2006 Greenheck Fan Corporation FSD-312 Rev 3 June 2006

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Greenheck Fan FSD-312 dimensions Damper Sizing Information, Transitioned Damper Dimensions, Specifications

FSD-312 specifications

The Greenheck Fan FSD-312 is a high-performance component designed for commercial and industrial ventilation applications. Renowned for its durability, efficiency, and versatility, the FSD-312 represents the pinnacle of fan technology, catering to a wide array of environments including schools, hospitals, manufacturing facilities, and more.

One of the most notable features of the FSD-312 is its robust construction. Built with high-quality materials, this fan is engineered to withstand challenging conditions, ensuring longevity and reduced maintenance needs. Its aerodynamic design promotes optimal airflow, significantly improving ventilation performance without sacrificing energy efficiency.

The FSD-312 employs advanced motor technology, utilizing energy-efficient motors that help in reducing operational costs. These motors are available in various configurations, allowing for easy integration into existing systems. The fan's speed can be adjusted to match the specific ventilation requirements of the space, providing customized airflow that enhances comfort while conserving energy.

Equipped with a direct drive system, the Greenheck Fan FSD-312 eliminates the need for belts and pulleys, resulting in a more compact design with fewer moving parts. This not only lowers the risk of mechanical failures but also simplifies installation and maintenance processes. The direct drive technology contributes to quieter operation, making the FSD-312 an ideal choice for noise-sensitive environments.

In terms of airflow capabilities, the FSD-312 is designed to handle a significant volume of air, with flexible options for both static pressure and airflow direction. This versatility allows it to be utilized in various configurations, whether for exhaust, supply, or make-up air applications.

The fan's user-friendly controls and monitoring systems enable precise management of airflow and energy consumption. Users can track performance metrics easily, ensuring that the ventilation system operates within optimal parameters.

In summary, the Greenheck Fan FSD-312 combines durable construction, energy-efficient motor technology, direct drive simplicity, and versatile airflow capabilities, making it a standout choice for facilities seeking reliable and efficient ventilation solutions. Its ability to cater to diverse applications further solidifies its position as a leader in the industry, providing exceptional performance in a compact and user-friendly design.