| MODEL CWD CENTRIFUGAL SIDEWALL EXHAUSTERS
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Application
Models CWD are high capacity sidewall mounted centrifugal exhaust fans rated from 170 to 3360 CFM, with static pressure capabilities to 1 inch. They are used to exhaust relatively clean air from a variety of industrial, commercial and institutional buildings such as machinery and equipment rooms, storage areas, office buildings, restaurants, retail stores, schools and similar buildings.
The nonoverloading backward inclined centrifugal wheel with its high static pressure capability, makes it suitable for either ducted or nonducted applications. It should be used where a sidewall mounted location is preferred to roof mounting.
The spun aluminum exterior provides a pleasing appearance, weatherproof construction and resistance to corrosion. The low silhouette design is less noticeable on the building exterior and the removable dome provides easy access to the fan interior for service and cleaning.
Model CWD is compatible with belt driven Model DB and companion gravity units to make up a complete ventilation system. Direct drive units use smaller diameter wheels, resulting in low sound levels and quiet operation. They have no belts or fan bearings to maintain or adjust and consequently require very little maintenance. | Construction/Specification Checklist
Housing
• Integral spun inlet for efficient performance.
• Spun aluminum dome for weather protection and attractive appearance.
• Motor support of heavy-gauge aluminum for rigidity and strength.
• Ventilated motor compartment with motor out of air stream for long trouble-free service.
• Dome easily removes for access to motor compartment.
• Water-tight construction.
• Duct connection provided at wheel inlet.
Centrifugal Wheel
• Backward inclined for efficiency at higher static pressure.
• Nonoverloading for safe operation in ducted systems.
• Statically and dynamically balanced for smooth, quiet operation.
• Heavy aluminum hub for extra strength.
• All aluminum construction.
Motors
• Speed controllable motors available on most models.
• Brands are nationally recognized and locally serviced.
• Single speed open drip-proof are standard.
• Two speed drip-proof and single speed explosion-proof motors are available for most models.
• Disconnect switch standard with single speed drip-proof motors (except explosion proof and two speed units).
AMCA Seal
• Models CWD are licensed for Air and Sound Performance.
UL Label
• UL 705 available when specified. |
