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  9. Downblast Vent, Belt Drive, 21-1/2 In
Dayton Downblast Vent, Belt Drive, 21-1/2 In 7AF17 - main

Downblast Vent, Belt Drive, 21-1/2 In

  • Mfr # 7AF17

  • Zoro # G1724082

product price: $2,074.99
/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 #
7AF17
Zoro #
G1724082
UPC #
-
Country of Origin
Multiple

Dimensions

Base Size - Roof Ventilators
30 in x 30 in
Wheel Dia.
21 1/2 in
Base Square Size - Roof Ventilators
30" x 30"
Shaft Dia. Wheel End
3/4 in
Dimension C
34 3/8 in
Overall Dia.
35 1/2 in
Dimension A
30 in
Dimension B
35 1/2 in
Base Height
1 3/4 in
Base Length
30 in
Overall Height
36 1/8 in
Base Width
30 in
Dimension D
5 1/2 in
Damper Size
23 x 23 in
Overall Width
35 1/2 in
Overall Diameter
35 1/2 in
Housing Width
35.5 in
Wheel Diameter
21 1/2 in
Overall Length
35 1/2 in
Propeller Shaft Diameter
3/4 in
Housing Length
35.5 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
208V AC/230V AC/460V AC
Motor HP - Roof Ventilators
1/2 hp
CFM @ 0.000-In. SP
4261
Max. Operating Amps
2.3-2.4/1.2
Assembled/Unassembled
Unassembled
CFM @ 0.250-In. SP
3744
CFM @ 0.125-In. SP
4013
CFM @ 0.375-In. SP
3477
Recommended 12 In. Fixed Curb Item No.
2RB79
Speed Controllable
No
RPM
770
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Drive Package Included
Yes
Hz
60
Item
Centrifugal Downblast Roof Exhaust Fan
Mounting Location
Roof
Wheel Type
Backward Inclined
Phase
3
Housing Material
Aluminum
CFM @ 0.625-In. SP
2643
Sones @ 0.250-In. SP @ 5 Ft.
10.7
Wheel Material
Aluminum
Max. BHP
0.55
Max. Inlet Temp.
180 Degrees
Agency Compliance
& G hazardous locations, F, Motor only UL Listed for Class I Groups C & D andClass II Groups E
Recommended 8 In. Fixed Curb Item No.
4HX41
Sones @ 0.500-In. SP @ 5 Ft.
9.8
Sones @ 0.125-In. SP @ 5 Ft.
11.0
Motor Voltage
208/230/460
Motor HP
1/2
Adj. 12 3/8"H Roof Curb Stock No.
2ZV83
CFM @ 0.500-In. SP
3141
Includes
Hazardous Location Motor
Drive Type
Belt Drive
Bearing Type
Regreasable Pillow Block
Standards
AMCA Sound and Air, UL
Includes Motor
Yes
For High-Static Pressure Applications
No
Application
Industrial and Commercial Applications
Assembly
Unassembled
Hazardous Location Specification
Class I Group C, Class I Group D, Class II Group E, Class II Group F, Class II Group G
Mount Type
Roof Curb
Compatible Curb Manufacturer Part Number
2RB79, 2ZV83, 3C437, 4C454, 4HX40, 4HX41, 4HX49
Resistance Properties
Weather Resistant
Exhaust Airflow @ 0.125 in SP
4,013 cfm
Maximum Inlet Air Temperature
180 Degrees F
Motor Speed
1,725 RPM
Features
Nonoverloading Centrifugal Wheel Design
Motor Horsepower
1/2 hp
Current
2.3 to 2.4/1.2 A
Housing Material Fabrication
Spun
Frequency
60 Hz
Maximum Fan Speed
770 RPM
Exhaust Airflow @ 0.000 in SP
4,261 cfm
Nameplate Voltage
208-230/460V AC
Brake Horsepower
11/20 hp
Maximum Static Pressure
5/8 in wc
Sound Level
10.2 sones @ 0.375 in SP and 5 ft, 10.7 sones @ 0.250 in SP and 5 ft, 11.0 sones @ 0.125 in SP and 5 ft, 12.1 sones @ 0.000 in SP and 5 ft, 9.3 sones @ 0.625 in SP and 5 ft, 9.8 sones @ 0.500 in SP and 5 ft
Exhaust Airflow @ 0.375 in SP
3,477 cfm
Safety Features
Birdscreen
Includes Drive Package
Yes
Motor Enclosure
Totally Enclosed Fan Cooled
High-Efficiency Motor
No
For Air Type
Flammable Vapor
Exhaust Airflow @ 0.500 in SP
3,141 cfm
Electrical Connection
Power Cord
Base Shape
Square
Airflow @ 0.000 in SP
4,261 cfm
Motor Location
Out of Airstream
Exhaust Airflow @ 0.250 in SP
3,744 cfm

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 208-230/460V AC, Phase 3, Motor Horsepower 1/2 hp, Exhaust Airflow @ 0.000 in SP 4,261 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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