Specification Sheet

157
MODEL STXD
DIRECT DRIVE CENTRIFUGAL UPBLAST ROOF EXHAUSTER
CONSTRUCTION/SPECIFICATION CHECKLIST
Housing
• Curb cap with integral deep single piece spun inlet for efcient performance and prevention of leakage
into ductwork.
• Lifting lugs for easy and safe placement of the fan on the roof.
• Heavy-gauge aluminum housing and curb cap for strength and rigidity. Curb cap is galvanized steel on all
UL 762 units.
• Adjustable motor base for proper belt tension and ease of adjustment.
• Enclosed ventilated motor/drive compartment isolates motor and drives from exhaust air.
• Neoprene isolators for reduction of vibration and sound.
• Quick-Release latches on motor cover for easy access to motor compartment.
• Water-tight conduit tube for easy electrical connection without having to wire through the breather tube.
• NFPA - Model STXB is suitable for National Fire Protection Association installations. Contact factory for
required accessories.
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
• Brands are nationally recognized and locally serviced.
• Single speed drip-proof motors are provided on standard models.
• Disconnect switch is standard with single speed open drip-proof and totally enclosed motors.
• Welded motor brackets designed for maximum strength.
Drives
• Sized for minimum 150% of drive horse power.
• Machined cast iron adjustable motor pulleys.
• Adjustable base for belt tensioning.
• Nonstatic 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 Listed Power Roof Ventilator label assures electrical reliability.
• cUL762us Listed for Restaurant Exhaust Appliance available for applications where required.
MODEL STXB
BELT DRIVE CENTRIFUGAL UPBLAST ROOF EXHAUSTER