Description

– Fan shall be a spun aluminum, roof mounted downblast centrifugal exhaust vent.

 Construction

 – Fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum structural components shall be constructed of minimum 16 gauge marine alloy aluminum, bolted to a rigid aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak. The discharge baffle shall have a rolled bead for added strength. An integral conduit chase shall be provided through the curb cap and into the motor compartment to facilitate wiring connections.

 Motor

 – shall be heavy duty type with permanently lubricated sealed bearing and furnished at the specified voltage, phase and enclosure. Motor shall be a NEMA “B”, class “B” insulation rated for continuous duty.

 Bearings

 – shall be designed and individually tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron pillow block housing selected for a minimum L50 life in excess of 200,000 hours

Model- 70C3B
HP- 1/4
RPM-1752,1815,1941
Tip Speed- 4586,4751,5081
Sones @ .25″- 12.7,13.7,15.6
0″ SP- 384,397,425
.125″SP- 358,372,402
.25″SP- 333,348,379
.375″SP-306,323,356
.50″SP-275,294,331
.75″SP-215,237,275