Preparing The Work Site - BIG ASS FANS Isis Installation Manual

Preparing the work site

The fan should only be installed according to the instructions described in this manual. Consult a structural
engineer for installation methods not covered in this manual. For optional mounting methods, refer to the installation
instructions included with the fan parts.
When surveying the work site, keep the following mechanical and electrical guidelines in mind.
Mechanical
• A suitable means for lifting the weight of the fan, such as a scissor lift, and at least two installation personnel will be required.
• If hanging the fan from angle irons, the minimum dimensions of the angle iron must be 2-1/2''×2-1/2''×1/4''
(6.4 cm × 6.4 cm × 0.6 cm) and it cannot be longer than 12 ft (3.6 m). It must be secured to the structure. Do not mount the fan to a
single purlin, truss, or bar joist. Consult a structural engineer for installation methods not covered in this manual.
• To reduce the risk of injury to persons, install the fan so that the airfoils are at least 10 ft (3.05 m) above the floor.
• If mounting the fan in the vicinity of an infrared/radiant heater, it is recommended that the fan be mounted outside of the clearances
recommended by the manufacturer of the heater and at a height equal to or above the shielding on the heating element with the
controller on the opposite side of the heater. If mounting the fan below the heater shielding, all fan elements must be outside of the
clearances recommended by the heater manufacturer. The installation manual for the specific model of heater will typically provide
the minimum clearance to combustibles (MCC).
• Ensure the mounting location will not expose the fan to direct contact with water unless the fan is labeled, "Suitable for use in wet
locations."
• Adhere to the safety requirements in the table below when selecting where to mount the fan.
Safety requirement
Clearance
Blade height
HVAC equipment
Fan spacing
Radiant/IR heaters
HVAC
Diffuser
≥1x fan's diameter (8 ft) (2.4 m)
HVAC
Diffuser
≥2x fan's diameter (16 ft) (4.9 m)
Electrical
• Identify the existing wiring to determine which wiring application is needed to install the fan.
• A wall controller is provided only with fans sold in the United States, Canada, and Saudi Arabia. Customers outside of these
countries must supply a lighting dimmer rated for incandescent loads only.
• If installing the fan on a typical lighting circuit with one basic light switch in which the critical red conductor or "traveler" is absent, you
will need to purchase the Limited Access Controller. Please discuss this option with your Big Ass Fans representative.
Pre-Installation (cont.)
Minimum distances
≥2 ft from all fan parts and ≥3 ft below sprinklers. The fan installation area must also be free of
obstructions such as lights, cables, or other building structure.
≥10 ft above the floor
≥1x fan diameter if above diffuser. ≥2x fan diameter if below diffuser. Refer to the illustration below.
2.5x fan diameter, center-to-center
See the manufacturer's requirements for the minimum clearance to combustibles.
8-ft diameter
8-ft diameter
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Isis
®
The fan is located at or above
the HVAC discharge or intake.
The fan is located below the
HVAC discharge or intake.
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