MODEL DB BELT DRIVE CENTRIFUGAL ROOF
EXHAUSTERS
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Application
Model DB belt drive units are roof mounted centrifugal exhausters rated from 230 to over 28,000 CFM, with static pressure capabilities to 1-1/4”. They are used for the exhaust of relatively clean air from a wide range of commercial, industrial and institutional environments such as manufacturing and assembly plants, office buildings, schools, hospitals, restaurants, athletic facilities and many others.
Breidert covers the DB with a 5 year warranty and a 1 year motor warranty. The nonoverloading backward inclined wheel with its higher static pressure capability makes this unit suitable for either ducted or nonducted applications. It’s roof mounting permits location near the area to be ventilated, allowing short duct runs and more efficient operation.
The aluminum exterior provides an attractive appearance. Belt drive results in lower operating RPM and sound levels, making the Model DB well suited to applications where quiet operation is important. Belt drive also permits easy performance adjustments when needed to balance the total ventilation system.Construction/Specification Checklist
Housing
• Curb cap with integral deep spun inlet for efficient performance.
• Heavy-gauge aluminum for extra strength.
• Designed for maximum weather protection and attractive appearance.
• Heavy-gauge motor support for rigidity and strength.
• Neoprene isolators for reduction of vibration and sound.
• Cover easily removed for quick access to motor compartment.
• Water tight conduit tube for easy electrical connection from below roof.
• Aluminum birdscreen and disconnect are included on standard models (Disconnect not included with explosion proof or two speed units).
• Stainless steel fasteners on exterior. |
Centrifugal Wheel
• All aluminum wheel.
• Backward inclined for efficiency at higher static pressure.
• Nonoverloading for safe operation in ducted systems.
• Tapered blades for efficiency and quiet operation.
• Heavy aluminum hub for extra strength.
• Statically and dynamically balanced for smooth operation.
Motors
• 1 year warranty.
• Brands are nationally recognized and locally serviced.
• Single speed open drip-proof are standard.
• Explosion-proof, totally enclosed and two-speed motors are available.
• All motors are rated for continuous duty.
• 182T and larger motors shipped unmounted for field installation.
• Disconnect switch standard (Except explosion proof and two speed).
Drives
• Sized for minimum 150% of drive horsepower.
• Machined cast iron adjustable motor pulleys.
• Adjustable base for belt tensioning.
• Non-static oil resistant V-Belts.
Bearings
• Heavy duty ball bearing type.
• Pre-lubricated and permanently sealed.
• 5 year warranty.
AMCA Seal
• Assures accuracy of Air and Sound Performance.
• Computerized Selection Program.
• Allows best selection for your job requirement.
UL Label
• UL 705 Listing assures electrical safety and reliability.
• UL 705 must be specified when required. |
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Options/Accessories
Roof Curb: Prefabricated insulated heavy-gauge galvanized steel welded construction, 8” high with 1-1/2” wood nailer. Assures perfect fit of exhauster to roof curb. Options include burglar bars, single and double pitch construction and additional curb heights.
Sound Curb: Option of thermal acoustical lining or a complete maximum sound attenuating baffle system. Provision for mounting damper is available. Contact factory for information regarding effect on exhauster air performance and sound level.
Motor Operated Damper: Motor operated for positive closure against backdraft.
Automatic Damper: Automatic aluminum damper for ease in installation and effective backdraft protection.
Companion Gravity Units: Model RCX-II come in a wide range of sizes and air capacities to provide relief or intake air to the system. Curbs and dampers are available to fit all sizes. Spun aluminum hoods provide a pleasing appearance, complementing the Model DB exhauster.
Epoxy Finish: For use in an alkaline type atmosphere (not for use in acetic and nitric acids). Epoxy forms an excellent hard, heavy film barrier against chemical attack as well as physical damage from direct impact and abrasion.
Special Coatings: Heresite and Eisenheiss are available when specified.
Optisizer Selection Program
Please refer to Breidert’s Optisizer Program for fan curve, submittal information and other details of the DB series and other Breidert products. Contact your representative or factory for a copy. Visit Breidert’s website for additional information: www.breidert.com.
Quickship Program
Most DB Models and many optional accessories are available on the Quickship Program. This program provides rapid delivery of standard products so that tight project deadlines can be met and downtime on replacement work can be held to a minimum.
All specifications are subject to change without notice unless approved
in submittal by Breidert Air Products. |
