BAROMETRIC RELIEF DAMPER

ADJUSTABLE COUNTERBALANCE

DAMPERS AND LOUVERS

BR-30 SERIES

 

Vertical Mount Horizontal Airflow

Application and Design

The BR-30 series is an eccentrically pivoted backdraft damper for low velocity systems. BR-30 series is a vertical mounted damper and designed to allow horizontal airflow and prevent reverse airflow. To increase sensitivity and reduce blade mounted counterbalance, the blade skin is formed aluminum. On-blade counterweights are provided to fine tune start-to-open and full open blade operation. Ball bearings minimize friction.

Recommended Applications:

Gravity hood intake and exhaust

Stairwell pressurization

Room pressurization

Ductwork outlets

Poor Applications:

Propeller fan outlets (high velocity)

Centrifugal fan outlets (high velocity)

Building pressurization (sensitive to wind)

Pressure relief exceeding 0.13 in. wg (32 Pa)

Ratings

Back Pressure: 2.0 in. wg (500 Pa)

Start-to-Open Pressure: 0.05 in. wg (12 Pa)

Velocity: 2000 fpm (10.2m/s)

Temperature: 180°F (82ºC)

Standard Construction

Frame: Insert mount 16 ga. (1.5mm) galvanized steel hat channel

Blades: 0.063 in. (1.6mm) thick formed aluminum, eccentrically pivoted

Axles: 3/8 in. (9.5mm) square plated steel

Bearings: Galvanized steel press-fit ball

Linkage: Side mounted (out of airstream)

Blade Seals: Pressure activated vinyl Counterbalance: Blade mounted with adjustable

weights

Size Limitations

Minimum Size: 8 in. W x 6 in. H (203mm x 152mm)

Maximum Panel Size: 48 in. W x 74 in. H (1220mm x 1880mm)

Options

EPDM segmented jamb seals

Stainless steel or aluminum frame

Stainless steel axles and linkage

Type 316 ball bearings with acetal races

Selectable start open from .05 to .13 in. wg (12 Pa - 32 Pa)

W*

H*

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

1.5 in.

1.5 in.

4 3/8 in.

MAX

1 in.

MAX

Airflow

5 in.

BR-30

BR-31

BR-32

No flange

Flange on

Flange on

 

Discharge

Intake

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Greenheck Fan BR-30 Series dimensions Application and Design, Ratings, Standard Construction, Size Limitations, Options

BR-30 Series specifications

The Greenheck Fan BR-30 Series represents a significant advancement in the realm of commercial and industrial ventilation solutions. Known for its robust engineering and efficient design, this fan series is tailored to meet the demanding needs of various applications, from general ventilation to specific task-oriented exhaust systems.

One of the standout features of the BR-30 Series is its high-efficiency backward-inclined impeller. This design minimizes energy consumption while maximizing airflow. With a variety of motor options, the fans can be tailored to specific application requirements, ensuring optimal performance. The motors are equipped with advanced thermal protection systems that enhance safety and prevent overheating, adding another layer of reliability to the product.

The BR-30 Series is also notable for its exceptional noise reduction capabilities. Integrated acoustic treatments and carefully designed housing minimize operational noise, making these fans perfect for environments where sound levels must be kept to a minimum, such as schools, offices, and hospitals. The overall airflow design further aids in maintaining a quiet operation while still delivering impressive airflow performance.

Additionally, the BR-30 Series features a lightweight, yet durable construction. The fan housing is crafted from high-quality materials, ensuring long-lasting performance even in harsh environmental conditions. Various protective coatings are available to enhance corrosion resistance, extending the lifespan of the fan in moisture-prone or chemically aggressive environments.

Installation and maintenance have been simplified with the BR-30 Series. The fans come equipped with easily accessible maintenance ports, allowing for quick inspections and repairs. Their modular design allows for straightforward installation, reducing labor time and costs associated with setup.

The BR-30 Series fans are also designed with energy efficiency in mind, complying with industry standards for sustainability. By incorporating advanced technologies, these fans help reduce overall energy consumption, contributing to lower utility bills and a smaller carbon footprint.

In summary, the Greenheck Fan BR-30 Series delivers high performance, noise reduction, and energy efficiency wrapped in a durable, user-friendly package. Its flexibility and adaptability make it an excellent choice for a wide range of ventilation applications, making it a popular selection for engineers and facility managers seeking reliable air movement solutions.