Wiring Diagrams & Electrical Guidelines - Bigass 4900 Manuel D'installation

WIRING DIAGRAMS & ELECTRICAL GUIDELINES
WARNING: 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! Hazard of electrical
shock!
WARNING: The installation of a Big Ass Fan must be in accordance with the requirements specified in this
installation manual and with any additional requirements set forth by the National Electric Code (NEC),
ANSI/NFPA 70-2014, and all local codes. Code compliance is ultimately YOUR responsibility!
WARNING: The fan VFDs contain high voltage capacitors that take time to discharge after removal of
mains supply. Before working on the VFD, ensure isolation of mains supply from line inputs at the VFD's
disconnect if installed. Wait three (3) minutes for capacitors to discharge to safe voltage levels. Failure
to do so may result in personal injury or death. Note: Darkened display LEDs are not an indication of safe
voltage levels.
CAUTION: It is the sole responsibility of the installer to verify the operating voltage of the fan system prior
to installation! It is also mandatory that the installer verify that airfoils, motor hub assemblies, and VFDs
are matched properly at the time of installation, especially if multiple fan systems will be installed.
CAUTION: An incorrectly installed VFD can result in component damage or reduction in the fan's life.
Wiring or application errors such as under-sizing the VFD, incorrect or inadequate AC supply, or excessive
ambient temperatures may result in a malfunction of the fan system. Verify correct voltage, phase, and
horsepower before beginning installation!
WARNING: Exercise caution and common sense when powering the fan. Do not connect the fan to a
damaged or hazardous power source. Do not attempt to resolve electrical malfunctions or failures on
your own. Contact Big Ass Fans if you have any questions regarding the electrical installation of this fan.
CAUTION: For use with Big Ass Fans-supplied variable frequency drive only. Not for use with other speed
control devices!
CAUTION: The product warranty will not cover equipment damage or failure that is caused by improper
installation.
CAUTION: The following information is merely a guide for proper installation. Big Ass Fans cannot assume
responsibility for the compliance or the non-compliance to any code, national, local, or otherwise for the
proper installation of these controllers, fans, or associated equipment. A hazard of personal injury and/or
equipment damage exists if codes are ignored during installation.
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