Greenheck Fan EM-40 dimensions Extruded Backdraft Damper, Application and Design

Page 1

Extruded BACKDRAFT DAMPER

ADJUSTABLE COUNTERBALANCE

EM-40 SERIES

Horizontal Mount - Vertical Airflow Down

Application and Design

The EM-40 series is a horizontally mounted backdraft damper that is designed to allow vertical airflow down and prevent reverse airflow. The damper is opened by air pressure differential and closed by gravity. Standard models include adjustable counterbalance weights to assist closing.

Ratings (See page 2 for specific limitations)

 

Pressure:

4.0 - 10.0 in. wg (996 Pa - 2491 Pa)

H*

 

differential pressure

 

 

Velocity:

2500 to 3500 fpm (13m/s - 18 m/s)

 

Temperature:

180°F (82ºC)

 

Standard Construction

Frame: Heavy gauge 6063T5 extruded aluminum. (0.125 in.[3.2mm] thickness)

Blades: Heavy gauge 6063T5 extruded aluminum. (0.070 in. [1.8mm] thickness)

Axles: 3/4 in. (19mm) dia. metallic

Bearings: Synthetic (acetal) sleeve type Linkage: 1/8 in. (3mm) plated steel

Blade Seals: Vinyl

EM-40

No Flange

Size Limitations

Minimum Size: 8 in. W x 11 in. H (203mm x 279mm)

Maximum Panel Size: 48 in. W x 74 in. H (1219mm x 1880mm)

Sizes larger than maximum shown will be supplied

EM-41

as two or more equal size smaller dampers required

Flange On

to make up the size specified. These larger multiple

Discharge

damper assemblies require field assembly and may

 

require additional reinforcement (not supplied by

 

Greenheck) to support the assembly.

 

W*

*W & H dimensions furnished approximately 1/4 in. (6mm) under size.

 

 

3 in.

3

1/8 in.

11 1/8 in.

 

 

 

 

5 in.

 

 

Airflow

11/2 in.

Options and Accessories

11/2 in. flange on discharge: EM-41

• 11/2 in. flange on intake:

EM-42

APC (Adjustable Pressure Controller). Allows field setting of relief pressure on all EM dampers. Use one per panel. Maximum recommended pressure set limitations are as follows:

Area ft2

Maximum Set

Pressure

(m2)

in. wg (Pa)

 

 

 

 

 

4

(.37)

.75 (187)

 

 

 

6

(.56)

.50 (125)

 

 

8 (100)

.40 (100)

 

 

10 (.93)

.30 (75)

 

 

 

15

(1.39)

.20 (50)

 

 

 

20

(1.86)

.15 (37)

 

 

 

24

(2.23)

.125 (31)

 

 

 

11/2 in.

EM-42

Flange On

Intake

Counterbalance weights may require field adjustment. Instructions are available at www. greenheck.com.

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Contents Extruded Backdraft Damper Options and AccessoriesApplication and Design Standard ConstructionPerformance Data EM-40 Specifications

EM-40 specifications

The Greenheck Fan EM-40 is a state-of-the-art ventilation solution designed for commercial and industrial applications. Known for its robust performance and reliability, the EM-40 model is engineered to meet diverse airflow needs while optimizing energy efficiency.

One of the primary features of the EM-40 is its advanced motor technology. The fan is equipped with an energy-efficient EC motor, which offers superior energy savings compared to traditional motors. This technology not only reduces energy consumption but also minimizes operating costs, making the EM-40 an economical choice for many businesses.

The design of the EM-40 is another standout feature. Constructed with durable materials, it ensures longevity and withstands challenging environments. The enclosure is built with high-quality steel, providing strength and resistance to corrosion. This durability makes the fan suitable for various environments, including manufacturing facilities and commercial kitchens.

The EM-40 also emphasizes versatility. With multiple available configurations, including different wheel types and sizes, it can be tailored to fit specific airflow requirements. Whether for exhaust or supply, the fan can handle a wide range of applications. In addition to accommodating various duct systems, its compact design allows for easy installation in tight spaces.

Noise reduction is a significant aspect of the EM-40's design. The fan features an acoustically optimized construction that minimizes operational noise, ensuring a quieter environment. This is particularly beneficial in noise-sensitive areas such as offices or schools, where a peaceful atmosphere is essential.

Another key characteristic of the EM-40 is its user-friendly control options. The fan can be equipped with advanced controls and sensors, allowing for automatic operation based on real-time conditions. This integration enhances the ease of use and further improves energy efficiency by adjusting airflow as needed.

In summary, the Greenheck Fan EM-40 stands out for its energy-efficient motor technology, durable construction, versatile configurations, noise reduction features, and user-friendly controls. These characteristics make it an ideal choice for various ventilation applications, contributing to improved indoor air quality and overall occupant comfort. With the EM-40, users can rely on a product that combines performance, efficiency, and innovation in one dependable solution.