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  9. Downblast Vent, Belt Drive, 24-1/2 In
Dayton Downblast Vent, Belt Drive, 24-1/2 In 7AF20 - main

Downblast Vent, Belt Drive, 24-1/2 In

  • Mfr # 7AF20

  • Zoro # G1830771

product price: $2,377.99
/ea
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Key Features

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Hazardous Location
Drive Type - Roof Ventilators
Belt Drive
Mounting Location - Roof Ventilators
Roof
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Specifications

Product Information

MFR #
7AF20
Zoro #
G1830771
UPC #
00799471519479
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
34 in x 34 in
Shaft Dia. Wheel End
1 in
Dimension A
34 in
Base Width
34 in
Dimension C
38 3/8 in
Base Length
34 in
Base Height
1 3/4 in
Overall Dia.
42 3/4 in
Dimension D
5 3/4 in
Wheel Dia.
24 1/2 in
Overall Height
40 1/8 in
Dimension B
42 3/4 in
Base Square Size - Roof Ventilators
34" x 34"
Wheel Diameter
24 1/2 in
Overall Diameter
42 3/4 in
Housing Width
42.8 in
Overall Length
42 3/4 in
Damper Size
27 x 27 in
Housing Length
40.1 in
Overall Width
42 3/4 in
Propeller Shaft Diameter
1 in

Details

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
Yes
Duty Rating - Roof Ventilators
Hazardous Location
Drive Type - Roof Ventilators
Belt Drive
Mounting Location - Roof Ventilators
Roof
Number of Speeds
1
Voltage - Roof Ventilators
230V AC/460V AC
Motor HP - Roof Ventilators
1/3 hp
CFM @ 0.000-In. SP
4637
Phase
3
Recommended 12 In. Fixed Curb Item No.
2RB80
Adj. 12 3/8"H Roof Curb Stock No.
2ZV84
CFM @ 0.125-In. SP
4242
Adj. 6 3/8"H Roof Curb Stock No.
4c455
Wheel Type
Backward Inclined
Speed Controllable
No
Agency Compliance
& G hazardous locations, F, Motor only UL Listed for Class I Groups C & D andClass II Groups E
Sones @ 0.500-In. SP @ 5 Ft.
6.1
Drive Type
Belt Drive
RPM
505
CFM @ 0.375-In. SP
3060
Sones @ 0.250-In. SP @ 5 Ft.
6.9
Max. Inlet Temp.
180 Degrees
Motor Voltage
230/460
Mounting Location
Roof
Max. BHP
0.35
Housing Material
Aluminum
Hz
60
Drive Package Included
Yes
Includes
Hazardous Location Motor
Sones @ 0.125-In. SP @ 5 Ft.
7.5
Item
Centrifugal Downblast Roof Exhaust Fan
Wheel Material
Aluminum
Assembled/Unassembled
Unassembled
Max. Operating Amps
1.2/0.6
Recommended 8 In. Fixed Curb Item No.
4HX42
CFM @ 0.250-In. SP
3761
Motor HP
1/3
Bearing Type
Regreasable Pillow Block
Standards
AMCA Sound and Air, UL
Base Shape
Square
Maximum Fan Speed
505 RPM
Electrical Connection
Power Cord
Motor Horsepower
1/3 hp
High-Efficiency Motor
No
Hazardous Location Specification
Class I Group C, Class I Group D, Class II Group E, Class II Group F, Class II Group G
For High-Static Pressure Applications
No
Motor Location
Out of Airstream
For Air Type
Flammable Vapor
Assembly
Unassembled
Airflow @ 0.000 in SP
4,637 cfm
Frequency
60 Hz
Motor Enclosure
Totally Enclosed Nonventilated
Exhaust Airflow @ 0.375 in SP
3,060 cfm
Application
Industrial and Commercial Applications
Safety Features
Birdscreen
Exhaust Airflow @ 0.250 in SP
3,761 cfm
Includes Drive Package
Yes
Features
Nonoverloading Centrifugal Wheel Design
Resistance Properties
Weather Resistant
Housing Material Fabrication
Spun
Compatible Curb Manufacturer Part Number
2RB80, 2ZV84, 3C438, 4C455, 4HX42, 4HX50
Mount Type
Roof Curb
Motor Speed
1,725 RPM
Exhaust Airflow @ 0.125 in SP
4,242 cfm
Exhaust Airflow @ 0.000 in SP
4,637 cfm
Current
1.2/0.6 A
Includes Motor
Yes
Maximum Static Pressure
3/8 in wc
Brake Horsepower
7/20 hp
Maximum Inlet Air Temperature
180 Degrees F
Sound Level
6.1 sones @ 0.375 in SP and 5 ft, 6.9 sones @ 0.250 in SP and 5 ft, 7.5 sones @ 0.125 in SP and 5 ft, 7.8 sones @ 0.000 in SP and 5 ft
Nameplate Voltage
230/460V AC

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Wheel Diameter 24 1/2 in, Base Diameter Not Applicable, Base Length 34 in, Base Width 34 in, Base Shape Square, Nameplate Voltage 230/460V AC, Phase 3, Motor Horsepower 1/3 hp, Exhaust Airflow @ 0.000 in SP 4,637 cfm, For High-Static Pressure Applications No, High-Efficiency Motor No, For Air Type Flammable Vapor, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof

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