Model VB upblast fan

Model VB upblast roof fans discharge warm, humid air from the building. Whether it’s exhausting hot air or moving stagnant air, roof-mounted Model VB fans will improve your building’s ventilation.

Upblast roof fans come outfitted with dampers that open automatically when the fan is started. The high velocity exhaust airstream holds the dampers open preventing the entrance of rain or snow.

When the motor power is cut, the dampers close to provide a complete weather seal. A rain runoff trough is located below the damper shafts to provide drainage to the outside resulting in weather-tight construction.

The Model VB is a belt-drive fan. For the similar direct-drive model see the Model V.

Features

• Sizes: 24″ – 60″
• HP: 1/3 HP – 10 HP
• CFM Range: 5,000 – 100,000+
• Drive: Heavy-duty TEFC belt drive motor with variable pitch drive up to 7.5 HP
• Propeller: High-performance dynamically balanced prop for superior performance and efficiency.
• Dampers: Butterfly dampers provide weather protection and prevent backdrafts when fan is not in running.
• Housing: Heavy gauge galvanized steel wind band, beaded for additional strength. All-welded drive frame.
• Design: Deep spun venturi panel provides superior strength and higher efficiency.
• Efficiency: NEMA Premium® efficient motor.
• Finish: Protective polyurethane coating.

Options

• Protective Guards:
  • Inlet Guard
  • Outlet Guard
• Magnetic damper latches
• Disconnect Switches:
  • NEMA 3R Rainproof
  • NEMA 4 Watertight
• Roof Curbs
• Special coatings
  • Epoxy
  • Polyurethane
  • Custom finishes
• Fusible link damper lifter
• Access doors