Damper Sizing Information, Specifications

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 damper sections and assemblies that have been qualified for operation with a single actuator. Larger sizes can be accommodated using multiples of these assembles.

Single Section

Multi Section

50 in. (1270mm)

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

Transitioned Damper Dimensions

32 in. (813mm)

When a fire/smoke damper is being used in conjunction with round or oval ductwork, the SSSMD-201 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 overall damper size.

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

D* + 2 in. (51mm)+T	s	H*+ 2 in. (51mm)+T	s
		H*+ 2 in. (51mm)+T	s
		21/8 in.
		(54mm)
		(54mm)

21/8 in. H* (54mm)

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

21/8 in. H*

(54mm)

16 in. (406mm) Min.

	W*
16 in. (406mm)	16 in. (406mm)
Min.	Min.

TYPE R

TYPE O

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)

Specifications

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 NFPA 92A, 92B, 101 and 105 and further 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.

Dampers shall have a UL555S leakage rating of Class I and a temperature rating of 250ºF (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 (specifier select one of the following) electric type for 120V, 24V, 230 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.

Damper blades shall be 16 ga. (1.5mm) 304 stainless steel 3V type

with three longitudinal grooves for reinforcement. Blades shall be completely symmetrical relative to their axle pivot point, presenting identical resistance to airflow and operation in either direction through the damper (blades that are non-symmetrical relative to their axle pivot point or utilize blade stops larger than 0.5 in. are unacceptable).

Damper frames shall be 16 ga. (1.5mm) 304 stainless steel formed into a structural hat channel shape with reinforced corners. Bearings shall be stainless steel type rotating in extruded holes in the damper frame. Jamb seals shall be stainless steel compression type.

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 shall be developed in accordance with the latest edition of AMCA Standard 500-D.

The basis of design is Greenheck’s model SSSMD-201.

SSSMD-201 specifications

The Greenheck Fan SSSMD-201 is a state-of-the-art tool engineered for efficiency and performance in the realm of commercial and industrial ventilation. This model stands out for its advanced design, reliability, and technological features, making it an ideal choice for various applications that require precise air management.

One of the primary characteristics of the SSSMD-201 is its innovative direct-drive motor system. This technology minimizes maintenance needs and maximizes efficiency by eliminating the need for belts and pulleys. The motor is capable of operating at multiple speeds, allowing users to adjust airflow based on specific requirements, thereby achieving optimal performance while conserving energy.

In addition to its motor system, the SSSMD-201 features a robust and aerodynamic fan blade design. These blades not only enhance airflow performance but also reduce noise levels, making this fan suitable for environments where acoustic comfort is a priority. Constructed from durable materials, the fan is built to withstand harsh conditions, ensuring a long lifespan and reducing the total cost of ownership.

Another significant feature of the Greenheck SSSMD-201 is its integrated control system. This offers users a seamless way to manage fan operation through advanced controls, including options for remote access and automation. The integration of smart technologies allows for monitoring and adjustment, ensuring that the fan operates at peak efficiency under varying loads.

The SSSMD-201 is also designed with energy efficiency in mind, as seen in its high-efficiency motor options that comply with Energy Star standards. This not only helps businesses save on energy costs but also contributes to a more sustainable approach to ventilation.

Moreover, the fan’s modular design simplifies installation and maintenance, making it user-friendly for technicians and operators alike. Its compact footprint allows for space-saving installation in tight applications, further enhancing its versatility.

Overall, the Greenheck Fan SSSMD-201 is an exemplary solution for businesses seeking an effective, reliable, and efficient ventilation system. With its innovative features, noise reduction capabilities, energy efficiency, and ease of use, it stands out as a premier choice in the industry.