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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 weighs 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 capable of 40 ft·lb (54.2 N·m) & 3/4” socket
☐ 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 of proper installation.
✓ Dedicated Branch Circuit Protection. Each fan requires dedicated branch circuit protection.
✓ Circuit Requirements. Refer to the fan label for appropriate circuit requirements for your fan size.
✓ Conduit. Controller 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 (VFD), 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 VFD. A non-fused, 600 V,
3-phase, blade style disconnect should be used to satisfy this “line-of-sight” requirement.
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, if applicable, and all local codes.
✓ See the Electrical Guidelines section for complete input power guidelines.
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