Application Data, Actuators and Accessories

Application Data

Damper Sleeve Dimensional Data

The drawings below and corresponding table show the position of the FSD-331 damper when mounted in a factory sleeve. The standard mounting locations provide enough space for the mounting of actuators, controls and allow space for installation of retaining angles and duct connections.

The standard location of a damper mounted in a factory sleeve ("A" dimension) is shown below. The damper can be positioned at other locations within a range of 6 in. (152mm) to 12 in. (305mm) for the "A" dimension.

11/2" max.

arie

Right hand drive is shown

Left hand drive available upon request

33/4"

53/8"

A 5" Sleeve Length

in. (mm)	"A" Dimension

	Standard	Maximum
	Standard	Maximum

All Dampers*	7 3/16 (183)	12 (305)

When H is 11 in. (279mm) or	12 (305)	12 (305)
less with OCI, RRL, or TOR

*With the exception of dampers 10 in. high (254mm) or less.

NOTE: Entire damper frame is not required to be installed within the wall. The damper blades, when closed should be contained within the wall.

T*	Actuators and Accessories
S	Space Envelopes
	Externally mounted actuators always require space
	outside of the damper sleeve. The “S” dimension
	illustrates the clearance required for various available
	actuators.

On dampers less than 18 in. (457mm) high, actuators may also require clearances above and/or below the sleeve. “B” and “T” dimensions are worst case clearance requirements for some dampers less than 18 in. (457 mm) high. All damper sizes under

18 in. (457mm) high do not require these worst case clearances. If space availability above or below the damper sleeve is limited, each damper size should be individually evaluated.

	B*	T*
Actuator Type/Model			S
Actuator Type/Model	With	With	S
	RRL, RRL/OCI, or TOR	RRL, RRL/OCI, or TOR

	120 Volt AC

ML-4XXX Series Honeywell	5¼ in. (133mm)	¾ in.(19mm)	6 in. (152mm)

MS-4XXX Series Honeywell	6 in. (152mm)	3/8 in. (10mm)	6 in. (152mm)

MS-4120 Series Honeywell	6 in. (152mm)	3/8 in. (10mm)	6 in. (152mm)

	24 Volt AC

ML-8XXX Series Honeywell	5¼ in. (133mm)	¾ in.(19mm)	6 in. (152mm)

MS-8XXX Series Honeywell	6 in. (152mm)	6 in. (152mm)	6 in. (152mm)

MS-8120 Series Honeywell	6 in. (152mm)	6 in. (152mm)	6 in. (152mm)

	Pneumatic (25 psi min.)

331-4551 Powers	1 in. (25mm)	6¼ in. (159mm)	6½ in. (165mm)

331-2976 Powers	2 3/8 in. (60mm)	12 1/8 in. (308mm)	9¼ in. (235mm)

MK2-7121 Invensys	3 3/4 in. (95mm)	16½ in. (419mm)	10 in. (254mm)

* For dampers 18 in. (457mm) or more in height these dimensions are 0 in. .

FSD-331 specifications

Greenheck Fan FSD-331 is a high-performance exhaust fan designed to provide efficient and reliable ventilation solutions in various industrial and commercial applications. With its robust construction and advanced engineering, the FSD-331 meets the demanding requirements of both indoor and outdoor environments, ensuring optimal air movement and safety.

One of the standout features of the FSD-331 is its state-of-the-art aerodynamic design, which maximizes airflow while minimizing energy consumption. The fan's blades are carefully engineered to reduce turbulence and noise, providing quieter operation compared to traditional exhaust fans. This makes the FSD-331 an ideal choice for noise-sensitive areas, such as schools, hospitals, and residential buildings.

The FSD-331 also boasts a direct-drive motor system that eliminates the need for belts and pulleys. This design not only reduces maintenance requirements but also enhances reliability, as there are fewer components that can wear and fail over time. The fan’s motor is designed to operate efficiently across a wide range of speeds, allowing users to adjust airflow as needed to accommodate varying ventilation demands.

Energy efficiency is a key characteristic of the FSD-331. It is available with various motor options, including high-efficiency models that comply with energy standards, helping building owners save on energy costs while reducing their carbon footprint. Additionally, the fan can be integrated with advanced control systems, such as variable frequency drives (VFDs), to further optimize performance and energy usage.

The FSD-331 is built to withstand challenging environmental conditions, thanks to its durable materials and weather-resistant features. Its housing is constructed from heavy-gauge steel, and options for protective coatings are available to enhance corrosion resistance. This durability ensures that the fan remains operational in harsh weather, making it suitable for rooftop installations and outdoor use.

The installation of the FSD-331 is straightforward, and it offers flexibility in mounting configurations, including horizontal and vertical orientations. This adaptability makes it easy to incorporate into existing systems or new construction projects.

In summary, the Greenheck Fan FSD-331 is an innovative solution for effective ventilation, featuring a high-performance design, energy-efficient operation, and robust construction. Whether for industrial processes, commercial buildings, or other applications, the FSD-331 is engineered to deliver reliable performance and significant operational savings.