Downblast Less Drive Package, 50 In
| Item - Roof Ventilators | Downblast Ventilator |
|---|---|
| Drive Package With Motor Included | No |
| Duty Rating - Roof Ventilators | Standard |
| Drive Type - Roof Ventilators | Belt Drive |
| Mounting Location - Roof Ventilators | Roof |
| Number of Speeds | 1 |
| Base Size - Roof Ventilators | 64 in x 64 in |
| Base Length | 64 in |
| Recommended Damper Size (In.) | 50 x 50 |
| Dimension C | 50-3/4 in |
| Housing Material | Aluminum |
| Overall Height | 52-1/2 in |
| Bearing Type | Regreasable Pillow Block |
| Item | Centrifugal Downblast Roof Exhaust Fan |
| Base Width | 64 in |
| Drive Type | Belt Drive |
| Motor HP Range | 1 to 10 |
| Wheel Type | Backward Inclined |
| RPM Range | 214 to 460 |
| Standards | AMCA Sound and Air, UL/cUL 705 |
| Base Height | 1.8 in |
| Dimension B | 83 in |
| Dimension D | 14-1/2 in |
| Recommended Damper Stock No. | 4HX71 |
| Wheel Material | Aluminum |
| Overall Dia. | 83 in |
| Shaft Dia. Sheave End | 1-1/4 in |
| Wheel Dia. | 50 in |
| Dimension A | 64 in |
| Includes | NEMA 1 Junction Box |
| CFM Range | 17,245 to 37,068 @ 0.0 in SP |
| Mounting Location | Roof |
| Adj. 12 3/8"H Roof Curb Stock No. | 2ZV87 |
| Recommended 12 In. Fixed Curb Item No. | 2RB83 |
| Requires | Roof Curb for New Installation |
| Max. Inlet Temp. | 180 deg F |
| Shaft Dia. Wheel End | 1-1/4 in |
| Recommended 8 In. Fixed Curb Item No. | 4YY76 |
| Speed Controllable | No |
| Features | Air Handling Quality Bearings Meet Minimum of L10-100,000 Hours, Features a Fully Rolled Windband Bead for Increased Stability and Easy Transport, Fresh Outside Air is Drawn in Under the Motor Cover to Maximize Motor Life, Nema 1 Junction Box Located in Motor Enclosure, Nonoverloading Centrifugal Wheel Design, Optional Nema 1 and 4 Disconnects Available |
| Overall Width | 50-3/4 in |
| Overall Length | 83 in |
| Application | Industrial and Commercial Buildings |
| For Air Type | Clean Air |
| Housing Width | 83 in |
| Spark Resistant Construction Type | A |
| Base Shape | Square |
| Maximum Motor Speed | 460 RPM |
| Maximum Fan Speed | 460 RPM |
| Electrical Connection | Power Cord |
| Assembly | Unassembled |
| Cutout Length | 52-1/2 in |
| Noise Level @ 0.000 in SP @ 5 ft | 9.7 sones |
| Includes Drive Package | No |
| Mount Type | Roof Curb |
| Minimum Motor Speed | 214 RPM |
| Housing Material Fabrication | Spun |
| Overall Diameter | 83 in |
| Minimum Airflow | 12,424 cfm |
| Housing Length | 83 in |
| Wheel Diameter | 50 in |
| Maximum Airflow | 37,068 cfm |
| For High-Static Pressure Applications | No |
| Resistance Properties | Weather Resistant |
| Base Diameter | Not Applicable |
| Propeller Shaft Diameter | 1-1/4 in |
| Sound Level | Fan RPM 214: 9.7 sones @ 0.000 in SP and 5 ft, 9.1 sones @ 0.125 in SP and 5 ft, 8.7 sones @ 0.250 in SP and 5 ft, Fan RPM 245: 12.2 sones @ 0.000 in SP and 5 ft, 11.6 sones @ 0.125 in SP and 5 ft, 11.0 sones @ 0.250 in SP and 5 ft, 10.7 sones @ 0.375 in SP and 5 ft, Fan RPM 269: 14.3 sones @ 0.000 in SP and 5 ft, 13.8 sones @ 0.125 in SP and 5 ft, 13.2 sones @ 0.250 in SP and 5 ft, 12.7 sones @ 0.375 in SP and 5 ft, Fan RPM 308: 17.9 sones @ 0.000 in SP and 5 ft, 17.5 sones @ 0.125 in SP and 5 ft, 16.9 sones @ 0.250 in SP and 5 ft, 16.2 sones @ 0.375 in SP and 5 ft, 15.8 sones @ 0.500 in SP and 5 ft, 15.6 sones @ 0.625 in SP and 5 ft, Fan RPM 366: 23.0 sones @ 0.000 in SP and 5 ft, 22.0 sones @ 0.125 in SP and 5 ft, 21.0 sones @ 0.250 in SP and 5 ft, 21.0 sones @ 0.375 in SP and 5 ft, 20.0 sones @ 0.500 in SP and 5 ft, 19.8 sones @ 0.625 in SP and 5 ft, 19.5 sones @ 0.750 in SP and 5 ft, 19.4 sones @ 0.875 in SP and 5 ft, Fan RPM 419: 28.0 sones @ 0.000 in SP and 5 ft, 27.0 sones @ 0.125 in SP and 5 ft, 27.0 sones @ 0.250 in SP and 5 ft, 26.0 sones @ 0.375 in SP and 5 ft, 26.0 sones @ 0.500 in SP and 5 ft, 25.0 sones @ 0.625 in SP and 5 ft, 24.0 sones @ 0.750 in SP and 5 ft, 24.0 sones @ 0.875 in SP and 5 ft, 23.0 sones @ 1.000 in SP and 5 ft, Fan RPM 460: 32.0 sones @ 0.000 in SP and 5 ft, 32.0 sones @ 0.125 in SP and 5 ft, 32.0 sones @ 0.250 in SP and 5 ft, 32.0 sones @ 0.375 in SP and 5 ft, 32.0 sones @ 0.500 in SP and 5 ft, 31.0 sones @ 0.625 in SP and 5 ft, 30.0 sones @ 0.750 in SP and 5 ft, 29.0 sones @ 0.875 in SP and 5 ft, 28.0 sones @ 1.000 in SP and 5 ft, 27.0 sones @ 1.250 in SP and 5 ft |
| Maximum Static Pressure | 1.25 in wc |
| Brake Horsepower | 1 1/25 hp |
| Includes Motor | No |
| Minimum Motor Horsepower | 1 HP |
| Safety Features | Birdscreen, Windband |
| Motor Location | Out of Airstream |
| Cutout Size | 52-1/2 in L x 52-1/2 in W |
| Maximum Motor Horsepower | 10 HP |
| Power Source | Electric Motor |
| Damper Size | 50 in x 50 in |
| Compatible Curb Manufacturer Part Number | 1VN43, 2RB83, 2ZV87, 4YY76, 4YY77 |
| Maximum Inlet Air Temperature | 180 deg F |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |