Model BR-10 Series - Greenheck

1 Model BR-10 Series Barometric Relief Dampers Horizontal Mount - Vertical Airflow Up Application The BR-10 Series is an eccentrically pivoted backdraft damper for low velocity systems. BR-10 Series is a horizontally mounted damper and designed to allow vertical airflow up and prevent reverse airflow. The blade is formed aluminum which increases sensitivity and reduces blade mounted counterbalance weights. 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 H*. W*. Room pressurization Ductwork outlets Poor Applications Propeller fan outlets (high velocity) W & H dimensions furnished approximately 1/4 in. (6mm) undersize. Centrifugal fan outlets (high velocity). Building pressurization (sensitive to wind). Pressure relief exceeding in. wg ( kPa) 5" 4 3/8 in. MAX.

2 BR-10 . Ratings No Flange Back Pressure: in. wg ( kPa). Start -to-Open Pressure: in. wg (.01 kPa). 1 in. MAX. Velocity: 2000 fpm ( m/s). Temperature: 180 F (82 C). Construction Standard Optional BR-11. Frame Material Galvanized Steel 304SS, Aluminum Flange on Discharge Frame Thickness 16 ga. - ( ) in. No Flange - ( BR-10 ). Frame Type Flange on Discharge - BR-12. (BR-11). Flange on Flange on Intake - Intake (BR-12). in. Blade Material Aluminum - Blade Seal TPE None Airflow Blade Thickness in. - ( ). Size Limitations Axle 3. 8 in. ( ) sq. Galva- 304SS. nized Steel Maximum Size Minimum Axle Bearings WxH Single Multiple Galvanized Steel Press Fit Acetal w/SS Ball Size Section Sections Linkage Material Galvanized Steel - Inches 8x6 48 x 74 96 x 148. Jamb Seal None EPDM. mm 203 x 152 1220 x 1880 2438 x 3759. Counterbalance Blade mounted with - adjustable weights Paint Finishes None Baked Enamel, Feature Epoxy, Hi Pro Polyester, Selectable start open from.

3 05 to .30 in. wg Industrial Epoxy, ( kPa - kPa). Kynar/Hylar (70%). Installation instructions available at Performance Data BR-10 Series Performance data results from testing a 12 in. x 12 in. and 36 in. x 36 in. (305mm x 305mm and 914mm x 914mm) in accordance with AMCA Standard 500-D using Figure (fully ducted), (ducted exhausting into an open area), and (plenum mounted). All data has been corrected to represent standard air density at lb/ft3 ( kg/m3). Pressure drop data shown is based on minimum start open pressure. Higher start open pressure will result in different pressure drop. Damper Size Damper Size 12 in. x 12 in. 36 in. x 36 in. (305mm x 305mm) (914mm x 914mm)..9 .9..8 .8..7 .7..6 .6..5 .5. Pressure Drop (in. wg). Pressure Drop (in. wg)..4 .4..3 .3..2 .2..1 .1..09 .09..08 .08..07 .07..06 .06..05 .05..04 .04..03 .03. 100 200 300 400 500 600 800 1000 2000 3000 100 200 300 400 500 600 800 1000 2000 3000. 700 900 700 900.

4 Velocity Velocity (fpm) (fpm). Specifications Barometric backdraft dampers meeting the following TPE blade seals; and internal plated steel blade-to-blade specifications shall be furnished and installed where shown linkage with blade mounted counterbalance weights. on plans and/or as described in schedules. Damper manufacturer's printed application and Dampers shall consist of: 16 ga. ( ) insert mount performance data including pressure, velocity, and galvanized steel hat channel frame with 5 in. (127mm) temperature limitations shall be submitted for approval depth; blades from in. ( ) thick formed showing damper suitable for pressures to 2 in. wg ( aluminum, eccentrically pivoted; 8 in. ( ) square 3 kPa), velocities to 2000 fpm ( m/s, and temperatures plated steel axles with galvanized steel press-fit ball to 180 F (82 C). Testing and ratings to be in accordance bearings; damper shall be equipped with pressure activated with AMCA Standard 500-D.)

5 Basis of design is Greenheck Model BR-10 . Copyright 2017 Greenheck Corporation BR-10 Series Rev. 5 September 2017.