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Specifications
®
Centrifugal Upblast Roof Exhaust Fans
H-CUE — Direct Drive
Model
Motors shall be heavy duty ball bearing type, carefully matched to the fan load, and furnished mounted to the steel drive assembly at the specified voltage, phase, and enclosure. Motors or drive assembly shall be mounted on vibration isolators. Fresh air for motor cooling shall be drawn into the motor compartment through a breather tube free of discharge contaminants. Motors shall be readily accessible for maintenance.
A disconnect shall be NEMA rated and factory installed with wiring included from the fan motor to a junction box installed within the motor compartment. A conduit chase shall be provided through the base to the motor compartment for ease of electrical wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved nameplate constructed of aluminum and containing the model number and individual serial number for future identification.
Fans shall meet all Greenheck wind load standards and shall contain the following third party certifications:
•Licensed P.E. calculations shall be available for fan per ASCE
•Fan shall be tested in accordance with ASTM
•Licensed P.E. calculations for attachment of fan to curb shall be available for ASCE
•All calculations and testing shall be done by a state licensed P.E., and a certified test lab.
Fans shall be Greenheck models
H-CUBE — Belt Drive
Model
Motors shall be
Precision ground and polished fan shafts shall be mounted in pillow block ball bearings. Bearings shall be selected for a minimum (L10) life in excess of 100,000 hours (L50 average of 500,000 hrs) at maximum cataloged operating speed. Drives shall be sized for a minimum of 150% of driven horsepower. Pulleys shall be of the cast type, keyed and securely attached to the wheel and motor shafts.
Motor pulleys shall be adjustable for fi nal system balancing. A disconnect switch shall be NEMA rated and factory installed with wiring included from the fan motor to a junction box installed within the motor compartment. A conduit chase shall be provided through the base to the motor compartment for ease of electrical wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affi xed manufacturer’s engraved metal nameplate containing the model number and individual serial number for future identifi cation.
Fans shall meet all Greenheck wind load standards and shall contain the following third party certifi cations.
•Licensed P.E. calculations shall be available for fan per ASCE
•Fan shall be tested in accordance with ASTM
•Licensed P.E. calculations for attachment of fan to curb shall be available for ASCE
•All calculations and testing shall be done by a state licensed P.E., and a certifi ed test lab.
Fans shall be Greenheck models | 7 | |
Schofi eld, Wisconsin. | ||
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