8’–24’ POWERFOIL
®
X2.0 & POWERFOIL
®
X2.0PLUS FANS
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8
Preparing the work site
Before beginning installation, review the mechanical and electrical installation guidelines below.
Mechanical installation
•
A 24-ft (7.3-m) Powerfoil
®
X2.0 fan weighs, at maximum, 500 lbs (227 kg). A suitable means for lifting the weight of the fan, such as a
scissor lift, and at least two (2) installation personnel will be required.
•
Big Ass Fans can only be mounted to an I-beam or angle irons. If mounting to an I-beam, the I-beam must be part of the existing
building structure. Do not mount the fan to a single purlin, truss, or bar joist. Consult a structural engineer for installation methods not
covered in the guide.
•
The mounting structure must be able to withstand the torque forces generated by the fan. A 24-ft fan generates nearly 300 ft·lb
(406.7 N·m) of torque during operation.
• Fans mounted on fabricated I-beams, which are common in steel buildings, could cause the beam to flex and the fan to move
significantly during operation. If this flexing causes a clearance problem, we suggest installing the I-Beam Stabilizer kit.
•
If the fan’s extension tube is 4 ft (1.2 m) or longer or if the mounting structure requires it, the fan’s lateral movement must be secured
using guy wires. If the fan is close to any building fixtures it is recommended to secure the fan with guy wires as a safety measure.
•
Adhere to the safety requirements in the table below when selecting where to mount the fan.
Safety requirement
Minimum distances
Clearance
≥2 ft from all fan parts. The fan installation area must be free of obstructions such as lights, cables,
sprinklers, or other building structure.
Blade height
≥10 ft above the floor
HVAC equipment
≥1x fan diameter if above diffuser. ≥2x fan diameter if below diffuser. Refer to the illustration below.
Fan spacing
2.5x fan diameter, center-to-center
Radiant/IR heaters
Minimum clearance to combustibles
Electrical installation
• To reduce the risk of electric shock, wiring should be performed by a qualified electrician! Incorrect assembly can cause electric
shock or damage the motor and the controller!
•
The installation of a Big Ass Fan must be in accordance with the National Electrical Code (NEC), ANSI/NFPA 70-1999, and all local
codes.
•
AC supply feeds for one fan controller may share the same conduit with AC supply feeds for one or more controllers.
•
All unused conductors that share a conduit with the AC supply feeds must be grounded on both ends.
•
If required, a local disconnect should be installed per NEC and all local codes.
• Refer to specifications on page 25 for appropriate circuit requirements.
•
Each fan requires dedicated branch circuit protection.
• To avoid damage to the VFD and fan controller, test the VFD and fan controller with a test cable before wiring the CAT 5 cable!
Pre-Installation (cont.)
Angle Iron
I-Beam
HVAC
Diffuser
HVAC
Diffuser
If the fan is mounted at the same level
or higher than a diffuser, the winglets
must be at a distance that is at least 1x
the measure of the fan’s diameter.
≥1x fan’s diameter
(24 ft)
≥2x fan’s diameter
(48 ft)
24-ft diameter
24-ft diameter
If the fan is mounted below a diffuser,
the winglets must be at a distance that
is at least 2x the measure of the fan’s
diameter.
