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Item Details - 4YC91

DaytonAxial Direct-Drive Downblast Supply Ventilator

Designed for situations requiring the steady supply of air under low to moderate static pressures. Fully rolled baffle bead for stability and ease of transport with spun aluminum hood construction. Galvanized steel venturi, inlet and supports.

  • Maximum inlet air temperature: 120º F
  • NEMA 1 junction box located in motor enclosure
  • Optional NEMA 1 and 4 disconnects available
  • UL/cUL 705 Listed for Power Ventilators
  • Wall or roof mountable

Agency Compliance

Performance

Motor HPMax BHPFan RPMCFM @
0.000'' SP0.125'' SP0.250'' SP0.375'' SP
1/4
0.07
1750
CFM
Sones
0.000'' SP0.125'' SP0.250'' SP0.375'' SP
929813595415
9.68.914.312.6
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.

Performance certified is for installation type A: Free inlet, Free outlet. 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 fan sone levels.

Catalog 405, January 2010

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Product Specifications (Glossary)

Agency Compliance [?]
  • AMCA Sound & Air
  • UL/cUL 705
Assembled [?]TRUE
Base Height [?]1 3/4 in
CFM [?]415 to 929 ft3/min
Curb Cap Size [?]22 in
Drive Type [?]Direct Drive
Fan DescriptionSupply Fan
Full Load Amps [?]4.2
Height [?]16 1/2 in
Hertz (Cycle) [?]60 Hz
Horsepower (Typ.) [?] 1/4 hp
Housing Material [?]Spun Aluminum
Impeller Diameter (Nom.) [?]12 in
Impeller Material [?]Aluminum
Impeller Type [?]Propeller
Includes [?]NEMA 1 Junction Box
Max Inlet Temp [?]120 °F
Max. Operating Amps [?]2
Model DescriptionAxial Direct-Drive Downblast Supply Ventilator
Motor Enclosure [?]Open Air-Over
Motor Insulation [?]B
Motor Phase [?]1
Motor Type [?]
Mounting Location [?]
  • Roof
  • Wall
Motor Nominal Efficiency58.3 %
Number of Blades [?]4
Overall Diameter [?]28 5/8 in
Recommended Damper Size15 x 15
Required Accessory [?]Roof Curb For New Installation
Roof Opening Width x Roof Opening Length [?]17 1/2 x 17 1/2 in
Shaft Diameter [?] 1/2 in
Speed Controllable [?]Yes
SuffixG
TypeAxial Direct-Drive Downblast
Voltage [?]115
Warranty Length [?]1 Year

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