Preparing The Work Site - BIG ASS FANS 4900 Installation Manual

6

Preparing the work site

Before beginning installation, review the mechanical and electrical installation guidelines below.
Mechanical installation
•
personnel will be required.
• Big Ass
in this guide. Do not mount the fan to single purlins, trusses, or bar joists. Consult a structural engineer for installation methods not
covered in this manual.
• The mounting structure must be able to withstand the torque forces generated by the fan. The fan generates nearly
120 162.7 of torque during operation.
•
• Adhere to the safety requirements in the table below when selecting the fan location.
Safety requirement
Clearance
Blade height
Fan spacing
Radiant/IR heaters
Diffuser
Diffuser
Electrical installation
•
• The installation of a Big Ass Fan must be in accordance with the National Electrical Code, ANSI/NFPA 70-2011, and all local codes.
• Refer to the Electrical Installation section in this manual for detailed electrical requirements.
• Controller output/motor input leads cannot share a conduit with any other controller's AC supply feed.
I-Beam
Minimum distances
illustration below.
2.5x fan diameter, center-to-center
See the manufacturer's requirements for the minimum clearance to combustibles.
14-ft diameter
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BIG ASS FAN 4900
Angle Iron
Ass Fans suggests contacting a structural engineer.
If the fan is mounted at the same level
or higher than the diffuser, the winglets
must be at a distance that is at least 1x
the measure of the fan's diameter.
14-ft diameter
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If the fan is mounted below the diffuser,
the winglets must be at a distance that
is at least 2x the measure of the fan's
diameter.