Download PDF for Print 11/3/2025

Emergency Smoke Exhaust Ventilator

Item

Designed for industrial and commercial buildings such as warehouses, manufacturing facilities, foundries, and laboratories. Constructed of heavy gauge steel and is UL listed for "Emergency Smoke Control". A removable motor cover enables quick and easy access to the motor, belt and drives from the roof deck.

  • Maximum inlet air temperature: 120º F
  • 500º F Operation for 4 hours
  • 100º F Operation for 15 mins.
  • High temperature regreasable pillow block bearings
  • UL/cUL Listed for Emergency Smoke Control
  • Spring loaded damper lifters meet UL-793 Snow Load Rating
Item
ABCD
57 1/2 in21 3/4 in71 833/1000 in56 in
EFG
29 5/8 in24 3/8 in16 1/2 in

Performance Characteristics
Item

Construction Features

Impeller Diameter (Typ.)48 in
Impeller TypePropeller
Impeller MaterialGalvanized Steel
Number of Blades6
Max Inlet Temp120 °F
Bearing TypeHigh Temp. Regreaseable Pillow Block
Drive Package DescriptionDrives By Others
Warranty Length1 Year

Air & Sound Performance
Motor HPMax BHPFan RPMCFM @0.000'' SP0.125'' SP0.250'' SP0.375'' SP0.500'' SP
22.20433CFM25,64222,58318,650——
Sones18.818.418.2——
33.31496CFM29,37326,83623,56319,730—
Sones23.023.022.023.0—
55.49587CFM34,76132,80930,16627,31924,091
Sones29.029.029.028.029.0

Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories). 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. The AMCA Certified Ratings Seal applies to sone ratings only.

Catalog 405, January 2010

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 793
Agency Compliance