Greenheck Fan WD-400 Series dimensions Application and Design, Standard Construction

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WD-400 SERIES

Non-Motorized Backdraft Damper

Horizontal or Vertical Mount (Intake)

Application and Design

The WD-400 series are non-motorized backdraft dampers which may be mounted either vertically for intake air or mounted horizontally to allow vertical airflow down and prevent reverse airflow. The dampers are opened by air pressure differential and

closed by springs. Optional motor packs are not available.

Ratings (See page 2 for specific limitations)

 

 

 

 

W*

Pressure:

2.0 in. wg (498 Pa) - differential

 

 

 

 

 

 

 

 

 

 

 

pressure

 

 

 

 

 

 

Velocity:

2500 fpm (13 m/s)

 

 

 

W*

 

 

 

 

 

Temperature:

180°F (82ºC)

 

 

 

 

 

 

 

 

 

 

W*

 

 

 

H*

 

 

 

 

 

Standard Construction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frame:

18 ga. (1.3mm) galvanized steel

 

 

 

 

 

 

Blades:

0.025 in. (0.64mm) aluminum

 

 

 

H* Single Panel

Axles:

3/16 in. (4.8mm) dia. zinc plated steel

 

 

 

 

 

 

 

 

 

 

 

 

 

rod, full length

 

 

 

 

 

 

 

 

H*

 

 

 

Bearings:

Synthetic (acetal)

 

Double Panel

Linkage:

0.064 in. (1.6mm) 6061T6 aluminum

 

 

 

 

 

 

 

 

 

tie bar

Blade Seals: Vinyl

Size Limitations (see pages 3 & 4 for specific limitations)

Minimum Panel Size

Triple Panel

*W & H dimensions furnished

 

 

approximately 1/8 in. (3mm) under size.

8 in. W x 8 in. H (203mm x 203mm)

Maximum Panel Size

Single Panel: 31 in. W x 74 in. H (787mm x 1880mm)

Double Panel (WD-400/410): 50 in. W x 74 in. H (1270mm x 1880mm)

Double Panel (WD-420/430): 63 in. W x 74 in. H (1600mm x 1880mm)

Triple Panel (WD-420/430): 74 in. W x 74 in. H (1880mm x 1880mm)

Options and Accessories (at additional cost)

• 11/2

in. (38mm) flange on discharge:

WD-420

11/2

in. (38mm) flange on intake:

WD-430

Stainless Steel Axles

 

*H

3

/8 in.

 

3

3

3

/4

in.

Max.

 

 

 

 

 

Airflow

*H

Airflow

Model WD-410

No Flange

1

/2

in.

 

1

 

 

*H

Airflow

1

1

/2 in.

 

 

 

*H

Airflow

 

 

 

 

 

 

 

 

1

1

 

in.

 

 

 

 

 

 

3

3/

in.

 

 

 

5/

 

 

/2

 

 

 

 

 

 

 

4

in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max.

 

 

 

1

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

/2 in.

 

 

4

/8 in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max.

Model WD-400

Model WD-420

No Flange

Flange on Discharge

1

1

/2 in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

in.

 

 

4

 

/8 in.

 

 

 

 

 

 

/2

 

 

 

1

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max.

Model WD-430

Flange on Intake

Image 1
Contents Application and Design Options and Accessories at additional costStandard Construction Pressure Drop Performance Data WD-400 SeriesLeakage Height Width 100 128 150 WD-400/410 SelectionSpecifications WD-420/430 Selection Specifications

WD-400 Series specifications

The Greenheck Fan WD-400 Series represents a remarkable advancement in indoor air management and ventilation technology. Known for its reliability and efficiency, this series is designed to meet diverse commercial and industrial needs while ensuring optimal performance and energy savings.

One of the standout features of the WD-400 Series is its robust construction. Made from high-quality materials, these fans are built to withstand harsh environmental conditions, making them ideal for use in various applications, including warehouses, manufacturing facilities, and commercial buildings. The durable casing not only enhances longevity but also reduces maintenance costs over the lifespan of the unit.

The WD-400 Series incorporates advanced aerodynamic design to maximize airflow and minimize noise. This design is complemented by precision-engineered fan blades which optimize performance and efficiency, ensuring that the air movement is both effective and quiet. The series features a variety of fan sizes, allowing users to select the ideal model to suit their specific airflow requirements.

Energy efficiency is a top priority for the WD-400 Series. Equipped with high-efficiency motors, these fans deliver superior performance while consuming less energy. This not only reduces operational costs but also supports sustainability goals by lowering carbon footprints. The fans also come with variable frequency drive (VFD) options, enabling users to precisely control air movement and further enhance energy savings.

In addition to top-tier performance, the WD-400 Series includes integrated control technologies that simplify operation. Users can easily monitor and adjust settings, ensuring optimal performance and system reliability. The user-friendly interface allows for quick adjustments, making it easier for maintenance personnel to manage air systems effectively.

Another notable characteristic of the WD-400 Series is its versatility. With a range of configurations available, including backward-inclined and forward-curved blade options, these fans can be tailored to meet diverse application requirements. They are suitable for both supply and exhaust applications, providing flexibility in design and installation.

In summary, the Greenheck Fan WD-400 Series stands out in the market with its robust construction, energy efficiency, advanced technology, and versatile design. Companies looking for reliable ventilation solutions can trust the WD-400 Series to deliver effective air management while minimizing operational costs and environmental impact. Its commitment to performance and efficiency makes it a valuable asset for any indoor air quality system.