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Item Details - 2RB67

DaytonEmergency Smoke Exhaust Ventilator

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. Select unit with drive package.

  • 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

Agency Compliance

Performance

Motor HPMax BHPFan RPMCFM @
0.000'' SP0.125'' SP0.250'' SP0.375'' SP0.500'' SP
2
2.20
433
CFM
Sones
3
3.31
496
CFM
Sones
5
5.49
587
CFM
Sones
0.000'' SP0.125'' SP0.250'' SP0.375'' SP0.500'' SP
25,64222,58318,650——
18.818.418.2——
29,37326,83623,56319,730—
23.023.022.023.0—
34,76132,80930,16627,31924,091
29.029.029.028.029.0
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. 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

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Product Specifications (Glossary)

Agency Compliance [?]
  • UL/cUL 793
  • AMCA Sound & Air
Assembled [?]FALSE
Base Height [?]1 3/4 in
Bearing Type [?]High Temp. Regreaseable Pillow Block
CFM [?]18,650 to 34,761 ft3/min
Drive Package Description [?]Drives By Others
Drive Type [?]Belt Drive
Fan DescriptionExhaust Fan
Frame Material [?]Galvanized Steel
Height [?]71 833/1000 in
Horsepower [?]2 to 5 hp
Housing Material [?]Galvanized Steel
Impeller Diameter (Nom.) [?]48 in
Impeller Material [?]Galvanized Steel
Impeller Type [?]Propeller
Max Inlet Temp [?]120 °F
Model DescriptionEmergency Smoke Exhaust Ventilator
Mounting Location [?]Roof
Number of Blades [?]6
Overall Diameter [?]56 in
Required Accessory [?]Roof Curb For New Installation
Roof Opening Width x Roof Opening Length [?]52 x 52 in
Shaft Diameter [?]1 1/4 in
Speed Controllable [?]No
TypeEmergency Smoke Removal, Axial Upblast Less Drive Package
Warranty Length [?]1 Year

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