Specification Sheet

115
CONSTRUCTION/SPECIFICATION CHECKLIST
Housing
• Curb cap has integral deep spun inlet for efcient performance and prepunched mounting holes for ease
of installation.
• Lifting lugs for easy and safe placement of the fan on the roof.
• Spun aluminum hood and skirt for weather protection and attractive appearance.
• Heavy-gauge motor support for rigidity and strength.
• Neoprene isolators for reduction of vibration and sound.
• Quick-Release latches on motor cover for easy access to motor compartment.
• Conduit passage for easy electrical connection from below roof.
• Aluminum birdscreen is standard.
• Stainless steel fasteners on exterior.
Centrifugal Wheel
• All aluminum wheel.
• Backward-inclined for efciency at higher static pressure.
• Non-overloading for safe operation in ducted systems.
• Curved blades for efciency and quiet operation.
• 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 eld installation.
• Disconnect switch standard on single speed drip-proof and totally enclosed motors.
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
• 5 year bearing warranty.
• Heavy-duty ball bearing type.
• Air handling with grease ttings.
• Sized for a minimum L50 life in excess of 200,000 hours.
AMCA Seal
• Assures accuracy of Air and Sound Performance.
cULus Label
• cULus 705 listing assures electrical safety and reliability.
• cULus 705 must be specied when required.
MODEL SDB
BELT DRIVE CENTRIFUGAL DOWNBLAST ROOF EXHAUSTER