Hooded Roof Propeller Fans Belt and Direct Drive Exhaust, Supply and Reversible

[fi[greenheck^ Building Value in Air. Hooded Roof Propeller Fans Exhaust Supply/Reversible Belt and Direct Drive From general ventilation of factories and warehouses to industrial duty, the range of construction and performance capabilities offered in this catalog represent the most comprehensive hooded propeller roof fan line available. Regardless of fan size, performance or duty level, all Greenheck hooded propeller roof fans are built to perform with the same high standards of reliability and durability. Exhaust, supply and reversible models are available in belt or direct drive. Filtered...

Direct Drive Fan Selection Two propeller and drive frame combinations are available. These models are designed and constructed for applications with static pressure ranges up to 1 in. wg. Models RE2 and RS2 are available with welded and die formed steel blades, while models RCE3 and RCS3 offer a cast aluminum propeller. For low sound applications, it is best to select the largest fan with the lowest RPM to meet the performance requirements. This ensures the tip speeds will be as low as possible. H Propeller: Straight, moderately pitched blade. It is designed for applications where static pressures are...

Superior Hood Design Greenheck’s interlocking rib design combines four material thicknesses with I-beam design principles producing a hood far superior in strength to conventional designs (an important feature in high snow or wind load regions). Formed channels adjacent to the ribs provide water drainage to ensure weather tightness. Hoods are available in galvanized steel, painted steel or aluminum construction. Hood support angles are heavy-gauge galvanized steel. Construction Features • Fan hoods and bases are constructed of galvanized, aluminum, steel or painted steel as specified. Hood panels...

[^GREENHECK Building Value in Air. Access and Service Periodic maintenance requires accessibility to fan components such as motors, belts, pulleys and propellers located under the hood. Greenheck’s hooded roof propeller fan design incorporates many service friendly features which reduce maintenance time and promotes proper servicing. These features include: • Hinged Hood - Sizes 36 and smaller are able to be hinged by removing two of the four hood fasteners. The hood may then be laid over on the roof deck while servicing. • Removable Hood - Sizes 36 and larger allow for complete removal of the...

Tall Base -Tall bases are recommended for installations including a gravity damper or a motorized damper and greatly simplifies installation and servicing. The damper components are factory assembled as part of the tall base and shipped as a single unit reducing field assembly time and costs. Inspection, service and cleaning of the damper, actuator and linkages are made easy with an access door including two cam latches with plated steel handles and a slide-out rack. Tall bases are designed to provide the necessary minimum spacing between the propeller and the damper. The tall base increases...

Options and Accessories Disconnect Switches – Toggle type and heavyduty disconnect switches are available for positive electrical shut-off and safety in servicing fans. The following switches are available to meet individual electrical requirements and can be factory mounted or shipped loose for field mounting. Wiring from the motor to the disconnect box is provided with factory mounted disconnect switches. • NEMA-1 for general purpose • NEMA-3R for rain resistant • NEMA-4 for watertight • NEMA-3R and NEMA-4 for heavy-duty • NEMA-7 and NEMA-9 for Class 1 and Class 2 hazardous locations and explosion...

[^GREENHECK^ Building Value in Air. The first consideration in any fan selection is the amount of air to be moved and the resistance to this air movement. With specific performance and application criteria in mind, propeller fan selections typically require decisions based on the following criteria: Belt Drive vs. Direct Drive Belt drive fans offer the ability to adjust fan speed for system balancing if necessary. They also offer more flexibility in speeds and motor selections. In a cost comparison, belt drive fans are typically less costly than comparable size direct drive fans with low speed...

Reversible Models Only Filter Performance and Control Center 0.7 Filter Performance Reversible Fan Control Center For reversible models RPDRF and RPBRF, with 2‑inch washable aluminum filters, use the filter performance graph above to determine the static pressure drop added by the filters. The filter loss is included in the performance data and no calculation will need to be determined for the RBF and RBCF models. Model ES-CC The airflow (cfm) and the desired fan size must be known to determine the pressure drop added by the filters. Example: Size 42‑inch RPDRF for 20,000 cfm at 0.125 in. wg....

Dimensional Data A sq.- Exhaust / Supply RE2, RS2, RCE3, RCS3, RBE, RBS, RBF, RBCE, RBCS, RBCF (Belt Drive Sizes 20-72 Direct Drive Sizes 18-54) All dimensions shown in inches (millimeters); *square dimensions

Material Data J 5 [^GREENHECK ^ Building Value in Air. B 7 Tm Direct Drive Model Number Code The model number system is designed to completely identify the fan. The correct code letters must be specified to designate direct drive with R E 2 - 24 R - Fabricated Prop RC - Cast Prop E - Exhaust S - Supply Construction Level 2 or 3 Fan Size No. of Blades - exhaust or supply air configuration. The remainder of the model number is determined by the size and performance selected from the following pages. Minimum Material Gauges Blade Pitch Propeller Roof Fan Direct Drive Reversible Filtered (Optional)...

Direct Drive Exhaust RE2-18 — 54 Building Value in Air. Model Number Performance certified is for model RE2 exhaust for installation type A: free inlet, free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of appurtenances (Birdscreen). The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: free outlet hemispherical sone levels. The AMCA Certified Ratings Sound Seal applies to sone ratings only. *Sones shown apply...