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- Downblast Vent, Belt Drive, 21-1/2 In
Dayton
Downblast Vent, Belt Drive, 21-1/2 In
Mfr # 7YR30
Zoro # G2675434
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Key Features
- Drive Package With Motor Included Yes
- Duty Rating - Roof Ventilators Standard
- Drive Type - Roof Ventilators Belt Drive
- Mounting Location - Roof Ventilators Roof
- Number of Speeds 1
Customers Also Purchased
- Brand Dayton
-
MFR #
7YR30
-
Zoro #
G2675434
- Country of Origin Multiple
- Category Belt Drive Centrifugal Exhaust Vents
Dimensions
Base Size - Roof Ventilators | 30 in x 30 in |
Base Height | 1 3/4 in |
Overall Height | 36 1/8 in |
Base Length | 30 in |
Base Square Size - Roof Ventilators | 30" x 30" |
Overall Dia. | 35 1/2 in |
Wheel Dia. | 21 1/2 in |
Dimension A | 30 in |
Dimension D | 5 1/2 in |
Shaft Dia. Wheel End | 3/4 in |
Dimension B | 35 1/2 in |
Base Width | 30 in |
Dimension C | 34 3/8 in |
Overall Length | 35 1/2 in |
Damper Size | 23 x 23 in |
Overall Diameter | 35 1/2 in |
Housing Length | 35.5 in |
Wheel Diameter | 21 1/2 in |
Overall Width | 35 1/2 in |
Propeller Shaft Diameter | 3/4 in |
Housing Width | 35.5 in |
Base Dimension | 30 in Square |
Base Diameter | Not Applicable |
Details
Item - Roof Ventilators | Downblast Ventilator |
Drive Package With Motor Included | Yes |
Duty Rating - Roof Ventilators | Standard |
Drive Type - Roof Ventilators | Belt Drive |
Mounting Location - Roof Ventilators | Roof |
Number of Speeds | 1 |
Voltage - Roof Ventilators | 115V AC/208V AC/230V AC |
Motor HP - Roof Ventilators | 1/4 hp |
CFM @ 0.000-In. SP | 3320 |
Adj. 6 3/8"H Roof Curb Stock No. | 4c454 |
Adj. 12 3/8"H Roof Curb Stock No. | 3C437 or 2ZV83 |
CFM @ 0.125-In. SP | 2984 |
CFM @ 0.375-In. SP | 2089 |
Recommended 12 In. Fixed Curb Item No. | 2RB79 or 4HX49 |
Drive Type | Belt Drive |
Max. Inlet Temp. | 180 Degrees |
Sones @ 0.250-In. SP @ 5 Ft. | 7.3 |
Phase | 1 |
Item | Centrifugal Downblast Roof Exhaust Fan |
Wheel Type | Backward Inclined |
Agency Compliance | AMCA Sound & Air, UL/cUL 705 |
Wheel Material | Aluminum |
Motor Voltage | 115/208/230 |
Drive Package Included | Yes |
Recommended 8 In. Fixed Curb Item No. | 4HX41 |
Includes | Drive Package, NEMA 1 Junction Box |
Hz | 60 |
Speed Controllable | No |
Max. BHP | 0.26 |
Housing Material | Aluminum |
Sones @ 0.125-In. SP @ 5 Ft. | 7.9 |
Motor HP | 1/4 |
Max. Operating Amps | 4.6/2.2-2.3 |
Assembled/Unassembled | Unassembled |
Mounting Location | Roof |
CFM @ 0.250-In. SP | 2637 |
RPM | 600 |
Bearing Type | Regreasable Pillow Block |
Standards | AMCA Sound and Air, UL/cUL 705 |
Maximum Static Pressure | 3/8 in wc |
Compatible Curb Manufacturer Part Number | 2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49 |
For Air Type | Clean Air |
Nominal Voltage | 115/208-230V AC |
Material | Aluminum Blade with Aluminum Housing |
Spark Resistant Construction Type | A |
Maximum Inlet Air Temperature | 180 Degrees F |
Exhaust Airflow @ 0.000 in SP - Range | 2,000 to 4,999 cfm |
Resistance Properties | Weather Resistant |
Electrical Connection | Power Cord |
Motor Speed | 1,725 RPM |
Motor Enclosure Design | Open Dripproof (ODP) |
Application | Industrial and Commercial Applications |
Includes Drive Package | Yes |
Frequency | 60 Hz |
Base Shape | Square |
Exhaust Airflow @ 0.000 in SP | 3,320 cfm |
Motor Enclosure | Open Dripproof |
Exhaust Airflow @ 0.250 in SP | 2,637 cfm |
Airflow @ 0.000 in SP - Range | 2,000 to 4,999 cfm |
Motor Efficiency | Standard-Efficiency Motors |
Features | Fresh Outside Air is Drawn in Under the Motor Cover to Maximize Motor Life, Fully Rolled Windband Bead for Increased Stability and Easy Transport, Nonoverloading Centrifugal Wheel Design |
Motor Location | Out of Airstream |
Brake Horsepower | 13/50 hp |
Housing Material Fabrication | Spun |
Sound Level | 6.1 sones @ 0.375 in SP and 5 ft, 7.3 sones @ 0.250 in SP and 5 ft, 7.9 sones @ 0.125 in SP and 5 ft, 8.5 sones @ 0.000 in SP and 5 ft |
For High-Static Pressure Applications | No |
Exhaust Airflow @ 0.375 in SP | 2,089 cfm |
Exhaust Airflow @ 0.125 in SP | 2,984 cfm |
Airflow @ 0.000 in SP | 3,320 cfm |
Mount Type | Roof Curb |
Current | 4.6/2.2 to 2.3 A |
Nameplate Voltage | 115/208-230V AC |
Maximum Fan Speed | 600 RPM |
Assembly | Unassembled |
Includes Motor | Yes |
Motor Horsepower | 1/4 hp |
High-Efficiency Motor | No |
Safety Features | Birdscreen, Windband |
Description
Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Wheel Diameter 21 1/2 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Nameplate Voltage 115/208-230V AC, Phase 1, Motor Horsepower 1/4 hp, Exhaust Airflow @ 0.000 in SP 3,320 cfm, For High-Static Pressure Applications No, High-Efficiency Motor No, For Air Type Clean Air, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof
- WARNING: Cancer and Reproductive Harm For more information go to www.P65Warnings.ca.gov
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