Greenheck Fan SEBR-10 User Manual

Application and Design

The SEBR-10 series is a severe environment 316 stainless steel eccentrically pivoted backdraft damper for low velocity systems. SEBR-10 series is a horizontally mounted damper and designed to allow vertical airflow up and prevent reverse airflow. 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) 316 stainless

steel hat channel

Blades: 20 ga. (1mm) 316 stainless steel,

eccentrically pivoted

Axles:

/8 in. (9.5mm) square 316 stainless steel

Bearings: 316 stainless steel with acetal races

Linkage: 316 stainless steel,

side mounted (out of airstream)

Blade Seals: Pressure activated vinyl

Counterbalance: Blade mounted with adjustable

316 stainless steel 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

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

SEBR-10 SERIES

Horizontal Mount Vertical Airflow Up

BAROMETRIC RELIEF DAMPER

ADJUSTABLE COUNTERBALANCE

DAMPERS AND LOUVERS

*W & H dimensions furnished approximately 1/4

in.(6mm) under size.

4 3/8 in.

MAX

1 in. MAX

1.5 in.

SEBR-10 No flange

SEBR-11 Flange on Discharge

SEBR-12 Flange on Intake

Airflow

Specifications

Barometric backdraft dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules.

Dampers shall consist of: 16 ga. (1.5mm) insert mount 316 stainless steel hat channel frame with 5 in. (127mm) depth; blades will be 20 ga. (1mm) 316 stainless steel, eccentrically pivoted;

⁄8 in. (9.5mm) square 316 stainless steel axles with 316 stainless steel bearings with acetal races; damper shall be equipped with pressure activated vinyl blade seals; and internal 316 stainless steel blade-to-blade linkage side mounted (out of airstream) with blade mounted 316 stainless steel counterbalance weights.

Damper manufacturer's printed application and performance data including pressure, velocity and temperature limitations shall be submitted for approval showing damper suitable for pressures to 2 in. wg (500 Pa), velocities to 2000 fpm (10.2m/s) and temperatures to 180°F (82ºC). Testing and ratings to be in accordance with AMCA Standard 500D.

Basis of design is Greenheck model SEBR-10 series.

Performance data results from testing a 12 in. x 1 2 in. and 36 in. x 36 in. damper in accordance with AMCA Standard 500D using Figure 5.3 (fully ducted), 5.2 (ducted exhausting into an open area), and 5.5 (plenum mounted) . All data has been corrected to represent standard air density at 0.075 lb/ft3 (1.201 kg/m3).

GREENHECK

P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410

PH. 715-359-6171

www.greenheck.com

SEBR-10 SERIESPERFORMANCE DATA

SEBR-10 series

Rev. 1 April 2004

Damper size 12 in. x 12 in.

Damper size 36 in. x 36 in.

Velocity (fpm)

Pressure Loss ( in. wg)

Velocity (fpm)

Pressure Loss ( in. wg)

2.0

1.0 .9 .8

.09 .08

.07

.06

.05

.04

.03

100

200 300 400 500 600

800

1000 2000 3000

700

900

2.0

5.5

5.2

5.3

1.0 .9 .8

.09 .08

.07

.06

.05

.04

.03

100

200 300 400 500 600

800

1000 2000 3000

700

900

5.5

5.2

5.3