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BEFORE INSTALLING YOUR FAN
Review the following pre-installation procedures and checks to ensure you have all necessary items for installation.
Tools
The largest Big Ass Fan can weigh up to a maximum of 415 lbs (188 kg). A suitable means for lifting the weight of
the fan, such as a scissor lift, at least two personnel, and the following tools will be required. Note: Depending on
your application, additional tools may be required.
☐ Standard wrench set
☐ Standard socket set and ratchet
☐ Torque wrench and 3/4” socket capable of 40 ft·lb (54.2 N·m)
☐ Phillips and flat head screwdrivers
☐ Standard allen wrench set
☐ 1/4” nut driver
☐ 5/16” nut driver
☐ #10 to #14 AWG strippers
☐ Medium channel locks
☐ Multimeter
Power supply guidelines
If you are unfamiliar or uncomfortable with the installation of electrical components, do not attempt to install the
fan without an electrician. This guide is merely a recommendation for proper installation.
✓
Dedicated Branch Circuit Protection.
Each fan requires dedicated branch circuit protection.
✓
Circuit Requirements.
See “Electrical Guidelines” and fan label for circuit requirements for your fan size.
✓
Conduit.
VFD output/motor input leads cannot share a conduit with any other controller’s AC supply feed.
✓
Local Disconnect.
If required, a local disconnect should be installed per NEC and all local codes.
✓
Onboard VFD.
If you are installing an onboard variable frequency drive, route the power wiring to the location
where the fan will be mounted.
✓
Manual Disconnect.
To satisfy some local code requirements, it may be necessary to install a manual disconnect
at the fan motor location when the fan assembly is not within line-of-sight from the auxiliary controller. A non-
fused, 600 V, 3-phase, blade-style disconnect should be used.
Power wiring guidelines
✓ To reduce the risk of electric shock, wiring should be performed by a qualified electrician. Incorrect assembly
can cause electric shock or damage to the motor or controller.
✓ The electrical installation of the fan must be in accordance with the National Electrical Code, ANSI/NFPA 70-
2014, and all local safety codes.
✓ See the Electrical Guidelines section for complete input power information.
