Belt Drive Propeller Roof Ventilators - usfan.com

1 Page 65 Models USC and USCH are low silhouette belt Drive propellerfans for exhaust or supply ventilation. Capacities up to 74,200 CFM and up to 7/8 inch static pressure. USC and USCH fansare designed for high capacity general ventilation. Typicalapplications include a wide range of commercial, industrial, andinstitutional facilities such as schools, hospitals, prisons, andassembly FeaturesHousing Hood and framework constructed of heavy gauge aluminum Hinged hood provides easy access to motor drivecompartment Large hood provides full perimeter opening for efficient air flowand weather protection Steel fasteners are zinc dichromate plated Welded tubular steel frame supports motor, Propeller and driveassembly Heavy gauge galvanized wire birdscreenAluminum Propeller All welded heavy gauge aluminum Propeller Non-overloading design for safe operation Precision balanced for smooth vibration free operationDisconnect Switch Mounted over knock-out in orifice plate allowing convenientwiring to power sourceBearings Permanently lubricated in a duplex split pillow block housing Bearings are resiliently mounted in neoprene rings Rated at L50life of 200,000 hours 5 yearlimited warranty on duplex split pillow block bearings Unitary pillow block bearings are standard on USCH72 Drive Assembly Cast iron drives sized for 150% of Drive horsepower Static free.

2 Oil and heat resistant beltsMotors Continuous duty motors located in the airstream for cooleroperation and longer life under continuous duty Motor compartment cooled by fins located on top of impellerOptions/Accessories Roof Curbs Dampers Coatings Filters,vertical andhorizontalBelt Drive Propeller Roof VentilatorsModels USC and USCHDIMENSIONSFanModelABB+CC+ERoofOpenin g*DamperModelCurbModelUSCH24 x x x x x x x x x x x For Supply Units with Filter are shown in inches.*Recommended Fan International certifies that the models shownherein are licensed to bear the AMCA seal.

3 The ratingsshown are based on tests and procedures performed inaccordance with AMCA Publication 211 and AMCAP ublication 311 and comply with the requirements of theAMCA Certified Ratings 705 ListedCSA CertifiedConsult your Fan representative for Roof FansFast Ship ProgramNext Day10 DayUSC-S30 USCH24-48 USCH24-48-S Consult factory for specific motor 66 PERFORMANCE and Sones vs. Static ".100".125".250".375".500".625".750".875 " 1 1 1 1 1/22357 1 1/22357 1 shown is for Installation Type A: Free inlet, Free Outlet Power Rating (BHP) does not include Drive ratings do not include the effects of appurtenances in the airstream. The sound ratings shown for Models USC, USC-S, and USCH, and USCH-S are loudnessvalues in fan sones at 5 feet ( m) in a hemispherical free field calculated per AMCA Standard 301.

4 Values shown are for Installation Type A: Free Inlet fan sone brake horsepower capability of a fan motor is dependent on the degree of cooling the motor receives from the moving air stream over the motor. The motor loading beyondthe motor name plate rating does not overheat the motor and is within NEMA recommended limits. It is therefore not detrimental to the motor and is economically VENTILATORSP ropeller Roof FansPage 67 SUPPLY VENTILATORSPERFORMANCE and Sones vs. Static ".100".125".250".375".500".625".750".875 " 1 1 1 1 1/22357 1 1/22357 1 shown is for Installation Type A: Free inlet, Free Outlet Power Rating (BHP) does not include Drive ratings do not include the effects of appurtenances in the airstream.

5 The sound ratings shown for Models USC, USC-S, and USCH, and USCH-S are loudnessvalues in fan sones at 5 feet ( m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for Installation Type A: Free Inlet fan sone brake horsepower capability of a fan motor is dependent on the degree of cooling the motor receives from the moving air stream over the motor. The motor loading beyondthe motor name plate rating does not overheat the motor and is within NEMA recommended limits. It is therefore not detrimental to the motor and is economically Roof Fans