Greenheck Fan NYB 用户手册

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Greenheck’s model NYD and NYB tamper-resistant centrifugal roof exhaust fans provide the industry’s 
best performance and durability for general clean air applications where tamper resistance is required.

•  Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory and

all models are licensed to bear the AMCA Air Performance seal.

•  Greenheck subjects these products to extensive life testing assuring you the fans will provide years of

reliable performance.

Housing is constructed entirely of heavy-gauge galvanized steel and includes louvered
vents for positive motor cooling.

Hood is hinged to swing fully open for complete access to all internal components. Open 
hood is safely supported and will not drop closed. Hinge is steel with protective coating.

Internal structural supports are heavy-gauge galvanized steel angles.

Drive frames and motor supports are heavy-gauge galvanized steel and are mounted on
resilient isolators.

Backward-inclined, non-overloading wheel is constructed of aluminum.

Heavy-duty ball bearing motor. Single and three phase fans include a NEMA-1 switch.

Birdscreen constructed of wire mesh is attached to the structural supports. (Removed 
from drawing for easy viewing internally)

Greenheck Fan Corporation certifies that the NYB

and NYD models 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.

The AMCA Certified Ratings Seal applies to air

performance ratings only.