Greenheck Fan Ventilation Hood BR 30 Series User Manual

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  
W*  
• 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)  
H*  
Velocity: 2000 fpm (10.2m/s)  
Temperature: 180°F (82ºC)  
Standard Construction  
Frame: Insert mount 16 ga. (1.5mm) galvanized steel  
hat channel  
*W & H dimensions furnished approximately 1/4 in.(6mm) under size.  
Blades: 0.063 in. (1.6mm) thick formed aluminum,  
eccentrically pivoted  
3
Axles: /8 in. (9.5mm) square plated steel  
1.5 in.  
1.5 in.  
Bearings: Galvanized steel press-fit ball  
Linkage: Side mounted (out of airstream)  
Blade Seals: Pressure activated vinyl  
Counterbalance: Blade mounted with adjustable  
weights  
4 3/8 in.  
MAX  
1 in.  
MAX  
Size Limitations  
Airflow  
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)  
5 in.  
Options  
• EPDM segmented jamb seals  
• Stainless steel or aluminum frame  
• Stainless steel axles and linkage  
BR-32  
Flange on  
Intake  
BR-30  
No flange  
BR-31  
Flange on  
Discharge  
• Type 316 ball bearings with acetal races  
• Selectable start open from .05 to .13 in. wg (12 Pa - 32 Pa)  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Grizzly Cordless Drill G0759 User Manual
Harbor Freight Tools Vacuum Cleaner 94683 User Manual
Honeywell Clock TE218ELW User Manual
Honeywell Network Cables Q7055A User Manual
Hotpoint Cooktop HL500E User Manual
HP Hewlett Packard Calculator hp 49g+ User Manual
HP Hewlett Packard Network Card 232664 006 User Manual
HP Hewlett Packard Personal Computer DC5750 User Manual
Hunter Fan Home Safety Product 45180 User Manual
Hy Tek Manufacturing Personal Computer Tek Panel 190 User Manual