Extruded BACKDRAFT DAMPER

EM-30 SERIES

Vertical Mount - Horizontal Airflow

Application and Design

The EM-30 series is a vertical mounted backdraft damper that is designed to allow horizontal airflow and prevent reverse airflow. The damper is opened by air pressure differential and closed by gravity.

Ratings (See page 2 for specific limitations)

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

differential pressure.

Velocity: 2500 to 3500 fpm (13 m/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

H*

W*

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

Size Limitations

 

11 1/8 in.

Minimum Size (without weights):

8 in. W x 8 in. H

3 in.*

5 in.

 

 

 

(203mm x 203mm)

 

 

Minimum Size (with weights):

8 in. W x 11 in. H

 

 

 

(203mm x 279mm)

 

 

*Optional counterbalance weights dimensioned (5/8 in. without weights).

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

Sizes larger than maximum shown will be supplied as two or more equal size smaller dampers required to make up the size specified. These larger multiple damper assemblies require field assembly and may require additional reinforcement (not supplied by Greenheck) to support the assembly.

Options and Accessories

Counterbalance Weights

APC (Adjustable Pressure Controller). Allows field setting of relief pressure on

Airflow

 

all EM dampers. Use one per panel.

 

 

 

 

 

 

 

11/2 in.

11/2 in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum recommended pressure set

 

 

 

 

 

 

 

 

 

 

 

 

 

31/8 in.

 

 

 

 

 

 

 

limitations are as follows:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EM-30

EM-31

 

 

 

 

 

EM-32

(EM-30 damper must be equipped with counterbalance.)

 

 

 

 

 

 

 

 

 

 

 

 

 

No Flange

Flange On

 

 

 

 

 

Flange On

 

 

 

 

 

 

 

 

Discharge

 

 

 

 

 

Intake

 

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)

 

Counterbalance weights may require field adjustment. Instructions are

 

 

 

 

 

 

24

(2.23)

.125 (31)

 

 

 

available at www. greenheck.com.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Greenheck Fan EM-30 Series dimensions Extruded Backdraft Damper, Application and Design, Standard Construction

EM-30 Series specifications

The Greenheck Fan EM-30 Series represents a culmination of innovative engineering and superior performance in air management systems. This series is designed to meet the demands of commercial and industrial applications, ensuring efficient ventilation while adhering to stringent energy efficiency standards.

One of the hallmark features of the EM-30 Series is its robust construction. Each unit is built with high-quality materials that enhance durability and resistance to environmental factors such as moisture and extreme temperatures. This ensures longevity and consistent performance over time, making it a reliable choice for various settings, including manufacturing plants, restaurants, and warehouses.

The EM-30 Series comes equipped with advanced fan technology, including the efficient backward-inclined fan blades. This design minimizes energy consumption while providing a high airflow rate, making it ideal for scenarios that require effective air movement without excessive energy expenditure. The fan is also designed to operate quietly, which is especially beneficial in environments where noise reduction is a priority.

In addition to its fan design, the EM-30 Series incorporates a direct drive motor that enhances performance while reducing maintenance needs. The absence of belts and pulleys eliminates common wear and tear issues, thus extending the operational lifespan of the system. This direct drive configuration also contributes to reduced energy costs, aligning with the growing demand for sustainability in energy consumption.

The EM-30 Series is designed with versatility in mind. It offers a range of configurations and options, allowing users to customize the unit to fit their specific airflow and pressure requirements. Whether it’s a standard model or a specialized version with additional features such as variable speed controls, the EM-30 can be tailored to meet diverse application needs.

Another standout characteristic of the EM-30 Series is its ease of installation and serviceability. The thoughtful design allows for straightforward mounting and minimal operational disruption during maintenance. This user-friendly approach minimizes downtime and ensures that facilities can maintain optimal airflow conditions without extensive delays.

Moreover, the EM-30 Series is built to comply with various energy efficiency and environmental regulations, making it an excellent choice for organizations looking to enhance their sustainable practices. Features like integrated energy recovery ventilators and smart controls allow buildings to optimize air quality while reducing energy usage.

In summary, the Greenheck Fan EM-30 Series showcases a blend of durability, efficiency, and versatility. Its advanced technologies, such as the backward-inclined fan design and direct drive motor, contribute to its reputation as a leading choice for effective ventilation solutions. Its user-friendly design guarantees ease of installation and maintenance, promoting long-term operational effectiveness across diverse settings. The EM-30 Series stands as a testament to Greenheck's commitment to innovation in air management technology.