Download PDF for Print 11/21/2024

Centrifugal Belt-Drive Downblast Exhaust Ventilator

Item

Designed to meet the general clean air exhaust requirements for industrial and commercial buildings. 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.

  • Aluminum backward inclined, nonoverloading centrifugal wheel design
  • Maximum inlet air temperature: 180º F
  • NEMA 1 junction box located in motor enclosure
  • Optional NEMA 1 and 4 disconnects available
  • Regreaseable pillow block bearings
  • Air handling quality bearings meet minimum of L10-100,000 hours
  • UL/cUL 705 Listed for Power Ventilators
Item
ABCD
42 in50 in36 in8 1/4 in

Performance Characteristics
Item

Construction Features

Impeller Diameter (Typ.)30 1/2 in
Impeller TypeBackward Inclined Centrifugal
Impeller MaterialAluminum
Max Inlet Temp180 °F
Bearing TypeRegreaseable Pillow Block
Drive Package DescriptionDrives Assembled
Warranty Length1 Year

Motor Information

Motor Item Number4YU31
Voltage115/208-230
Hertz (Cycle)60 Hz
Motor Phase1
Motor EnclosureOpen Drip Proof
RPM1,725 rpm
Full Load Amps13.2/7.2-6.6

Other Components

ComponentDescriptionItem #
Fan DescriptionExhaust Fan—
BeltA56 (QTY: 1)3X704
Driver Sheave1VP56x5/83X494
Driven SheaveBK160H3X609
Driven BushingH x 13X576

Air & Sound Performance
Motor HPMax BHPFan RPMCFM @0.000'' SP0.125'' SP0.250'' SP0.375'' SP0.500'' SP0.625'' SP0.750'' SP0.875'' SP
1 1/21.55600CFM97199334890784467952738867215743
Sones15.915.414.914.313.813.212.211.1

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects of a birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: Free inlet hemispherical sone levels.

Catalog 405, January 2010

Operating Range of Drive Package

Turns Open01/211 1/222 2/133 1/244 1/25
Approx. FRPM600580569557546534523511500488

Agency Compliance

Dayton Electric Mfg. Co. certifies that the ventilators shown herein are licensed to bear the AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

AMCA Sound & Air
Agency Compliance
UL/cUL 705
Agency Compliance
CSA Certified Motor