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  9. Downblast Less Drive Package, 21-1/2In
Dayton Downblast Less Drive Package, 21-1/2In 4YU98 - main

Downblast Less Drive Package, 21-1/2In

  • Mfr # 4YU98

  • Zoro # G1222426

product price: $1,498.99
/ea
Item requires special delivery charges. A $150.00 per item surcharge will be applied.

Key Features

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
No
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 #
4YU98
Zoro #
G1222426
UPC #
190735339374
Country of Origin
United States

Dimensions

Base Size - Roof Ventilators
30 in x 30 in
Dimension B
35 1/2 in
Base Height
1.8 in
Recommended Damper Size (In.)
23 x 23
Dimension C
34 3/8 in
Shaft Dia. Sheave End
3/4 in
Dimension A
30 in
Base Width
30 in
Dimension D
5 1/2 in
Wheel Dia.
21 1/2 in
Overall Height
36 1/8 in
Shaft Dia. Wheel End
3/4 in
Base Length
30 in
Overall Dia.
35 1/2 in
Overall Width
34 3/8 in
Overall Length
35 1/2 in
Cutout Size
25.5 in L x 25.5 in W
Housing Length
35.5 in
Propeller Shaft Diameter
3/4 in
Cutout Length
25.5 in
Wheel Diameter
21 1/2 in
Damper Size
23 x 23 in
Overall Diameter
35 1/2 in
Housing Width
35.5 in

Details

Item - Roof Ventilators
Downblast Ventilator
Drive Package With Motor Included
No
Duty Rating - Roof Ventilators
Hazardous Location
Drive Type - Roof Ventilators
Belt Drive
Mounting Location - Roof Ventilators
Roof
Number of Speeds
1
Adj. 6 3/8"H Roof Curb Stock No.
4c454
Recommended 8 In. Fixed Curb Item No.
4HX41
Max. Inlet Temp.
180 Degrees
Drive Type
Belt Drive
Housing Material
Aluminum
Requires
Roof curb for new installations
Includes
NEMA 1 Junction Box
Wheel Type
Backward Inclined
Standards
AMCA Sound and Air, UL/cUL 705
Motor HP Range
1/4 to 2
CFM Range
3320 to 6640 @ 0.0 in SP
Item
Centrifugal Downblast Roof Exhaust Fan
Bearing Type
Regreasable Pillow Block
Recommended 12 In. Fixed Curb Item No.
2RB79
Adj. 12 3/8"H Roof Curb Stock No.
2ZV83
Recommended Damper Stock No.
4HX67
Wheel Material
Aluminum
Mounting Location
Roof
RPM Range
600 to 1200
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
Application
Industrial and Commercial Buildings
For Air Type
Clean Air
Minimum Airflow
2,089 cfm
Safety Features
Birdscreen, Windband
Assembly
Unassembled
Power Source
Electric Motor
Maximum Static Pressure
1 3/4 in wc
Maximum Inlet Air Temperature
180 Degrees F
Noise Level @ 0.000 in SP @ 5 ft
20 sones
Spark Resistant Construction Type
A
Minimum Motor Speed
600 RPM
Compatible Curb Manufacturer Part Number
2RB79, 2ZV83, 3C437, 4C454, 4HX41, 4HX49
Includes Drive Package
No
Mount Type
Roof Curb
Maximum Airflow
6,640 cfm
Sound Level
Fan RPM 1090: 20.0 sones @ 0.000 in SP and 5 ft, 19.6 sones @ 0.125 in SP and 5 ft, 18.9 sones @ 0.250 in SP and 5 ft, 18.4 sones @ 0.375 in SP and 5 ft, 18.1 sones @ 0.500 in SP and 5 ft, 17.8 sones @ 0.625 in SP and 5 ft, 17.5 sones @ 0.750 in SP and 5 ft, 17.2 sones @ 0.875 in SP and 5 ft, 16.8 sones @ 1.000 in SP and 5 ft, 15.8 sones @ 1.250 in SP and 5 ft, Fan RPM 1200: 24.0 sones @ 0.000 in SP and 5 ft, 23.0 sones @ 0.125 in SP and 5 ft, 23.0 sones @ 0.250 in SP and 5 ft, 22.0 sones @ 0.375 in SP and 5 ft, 22.0 sones @ 0.500 in SP and 5 ft, 21.0 sones @ 0.625 in SP and 5 ft, 21.0 sones @ 0.750 in SP and 5 ft, 21.0 sones @ 0.875 in SP and 5 ft, 21.0 sones @ 1.000 in SP and 5 ft, 19.9 sones @ 1.250 in SP and 5 ft, 18.6 sones @ 1.500 in SP and 5 ft, 16.7 sones @ 1.750 in SP and 5 ft, Fan RPM 665: 9.6 sones @ 0.000 in SP and 5 ft, 9.0 sones @ 0.125 in SP and 5 ft, 8.5 sones @ 0.250 in SP and 5 ft, 7.7 sones @ 0.375 in SP and 5 ft, 6.7 sones @ 0.500 in SP and 5 ft, Fan RPM 730: 8.5 sones @ 0.000 in SP and 5 ft, 7.9 sones @ 0.125 in SP and 5 ft, 7.3 sones @ 0.250 in SP and 5 ft, 6.1 sones @ 0.375 in SP and 5 ft, Fan RPM 770: 12.1 sones @ 0.000 in SP and 5 ft, 11.0 sones @ 0.125 in SP and 5 ft, 10.7 sones @ 0.250 in SP and 5 ft, 10.2 sones @ 0.375 in SP and 5 ft, 9.8 sones @ 0.500 in SP and 5 ft, 9.3 sones @ 0.625 in SP and 5 ft, Fan RPM 860: 14.1 sones @ 0.000 in SP and 5 ft, 13.3 sones @ 0.125 in SP and 5 ft, 12.9 sones @ 0.250 in SP and 5 ft, 12.4 sones @ 0.375 in SP and 5 ft, 11.8 sones @ 0.500 in SP and 5 ft, 11.4 sones @ 0.625 in SP and 5 ft, 11.1 sones @ 0.750 in SP and 5 ft, 11.4 sones @ 0.875 in SP and 5 ft, Fan RPM 965: 16.7 sones @ 0.000 in SP and 5 ft, 16.0 sones @ 0.125 in SP and 5 ft, 15.4 sones @ 0.250 in SP and 5 ft, 15.0 sones @ 0.375 in SP and 5 ft, 14.5 sones @ 0.500 in SP and 5 ft, 14.1 sones @ 0.625 in SP and 5 ft, 13.7 sones @ 0.750 in SP and 5 ft, 13.2 sones @ 0.875 in SP and 5 ft, 13.0 sones @ 1.000 in SP and 5 ft
Includes Motor
No
Maximum Motor Horsepower
2 hp
Minimum Motor Horsepower
1/4 hp
Base Shape
Square
Maximum Fan Speed
1,200 RPM
Brake Horsepower
13/50 hp
Resistance Properties
Weather Resistant
Maximum Motor Speed
1,200 RPM
Housing Material Fabrication
Spun
Electrical Connection
Power Cord
For High-Static Pressure Applications
No
Motor Location
Out of Airstream

Description

Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Mounting Location Roof, Wheel Diameter 21 1/2 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Minimum Airflow 2,089 cfm, Maximum Airflow 6,640 cfm, Maximum Motor Horsepower 2 hp, Minimum Motor Horsepower 1/4 hp, Minimum Motor Speed 600 RPM, Maximum Motor Speed 1,200 RPM, Maximum Static Pressure 1 3/4 in wc, For High-Static Pressure Applications No

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