Submittal: 4YU91 | Products

Axial Belt-Drive Downblast Exhaust Ventilator

Designed for situations that require steady exhaust of clean air under low-to-moderate static pressures. Spun aluminum construction including a fully rolled bead on the windband, ensures stability and provides rigidity for lifting and transporting.

Maximum inlet air temperature: 120º F
NEMA 1 junction box located in motor enclosure
Optional NEMA 1 and 4 disconnects available
Regreaseable pillow block bearings
UL/cUL 705 Listed for Power Ventilators
Air handling quality bearings meet minimum of L10-100,000 hours

A	B	C	D
46 in	58 5/8 in	41 7/8 in	6 5/8 in

Performance Characteristics

Construction Features

Impeller Diameter (Typ.)	36 in
Impeller Type	Propeller
Impeller Material	Steel
Number of Blades	5
Max Inlet Temp	120 °F
Bearing Type	Regreaseable Pillow Block
Drive Package Description	Drives By Others
Warranty Length	1 Year

Air & Sound Performance

Motor HP	Max BHP	Fan RPM	CFM @	0.000'' SP	0.125'' SP	0.250'' SP	0.375'' SP	0.500'' SP	0.625'' SP	0.750'' SP
3/4	0.79	493	CFM	8261	7052	5729	4398	2580	—	—
3/4	0.79	493	Sones	—	—	—	—	—	—	—
1	1.06	542	CFM	9082	7972	6861	5569	4405	2640	—
1	1.06	542	Sones	—	—	—	—	—	—	—
1 1/2	1.57	621	CFM	10,406	9425	8502	7424	6316	5299	3733
1 1/2	1.57	621	Sones	—	—	—	—	—	—	—

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.

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 comply with the requirements of the AMCA Certified Ratings Program.

AMCA Air

UL/cUL 705
Agency Compliance