Romla Model VBO remote belt-drive upblast roof fans discharge warm, humid air from the building.
PRODUCT BENEFITS
- Model VBO
- High-performance propeller for optimal efficiency
- Motor, belts, and bearings are isolated from the air stream for maximum protection from high temperatures and contaminants
- Dampers prevent rain, snow, and debris entry. Includes rubber bumpers for quiet damper operation
- Water drains through a rain runoff trough below the damper shafts
- Corrosion-resistant polyurethane coating
- Model VBO-HV (VBO Benefits+)
- Removes hot, humid, smoky, or contaminated air from the building
- Heavy-duty, die-formed steel propeller for reliable performance in high temperature environments
- UL Listed Power Ventilators for Smoke Control Systems. Meets UL requirements of 500°F for a minimum of 4 hours
- UL-793 Listed butterfly dampers meet snow load test
- Meets International Fire Code requirements of 1,000°F for a minimum of 15 minutes
- Model VBO-S (VBO Benefits+)
- Sturdy square base provides simplified installation
- Easy to service with removable wind band and fan shroud which provide direct access to fan
- CEC-compliant models available for customers that need to meet California Energy Commission standards
STANDARD FEATURES
- Heavy gauge galvanized steel wind band, beaded for additional strength
- High-performance propellers
- VBO, and VBO-S: Backward sickled polyamide blades mated to a cast aluminum hub
- VBO-HV: Heavy-duty, die-formed steel propeller for reliable performance in high temperature environments.
- Totally Enclosed Fan Cooled (TEFC) motor. Variable pitch drive (≤ 7.5 HP) adjustable for final system RPM; sized for 165% of rated HP
- Belt drive transmission with oil resistant, non-static type fan belts
- Rubber bumpers provide quieter operation. Includes magnetic damper latches
- Self-aligning pillow block bearings with minimum operating life of >200,000 hours at maximum operating speeds. Heavy-duty, grease lubricated, and self-aligning
- Extended lubrication lines. (VBO, VBO-HV)
- Deep spun venturi panel provides superior strength and higher efficiency.
- Polyurethane coated exterior.
- Dampers
- VBO, VBO-S: Butterfly steel dampers with magnetic damper latches.
- VBO-HV: Spring-loaded, galvanized steel damper with fusible link and lifting mechanism for automatic opening in case of fire. Rubber bumpers provide quieter operation. Includes magnetic damper latches.
OPTIONAL FEATURES
- Roof curbs.
- Curb adapter.
- Inner and outer guards.
- Disconnect switches.
- Custom finishes.
- Custom propeller sizes, static pressure and CFM outputs may be available upon request.
