BIG ASS FANS Basic 6 Manuel D'installation page 8

Consult a structural engineer to determine the appropriate mounting method for your building structure. The
safety cables are required for all mounting methods.
Bar Joists
I-Beam
Z-Purlins
Solid Beam
4
MOUNTING GUIDE
See Preparing the Mounting Structure: Bar Joists for instructions.
☐ The installer must supply angle irons and suitable 1/2"-13 Grade 8
mounting hardware.
☐ Do not install the fan from a single purlin, truss, or bar joist.
☐ Angle iron spans should not exceed 12 ft (3.7 m).
☐ The angle irons must be fastened to the roof structure at each end.
☐ Do not use beam clips on angle irons.
See Preparing the Mounting Structure: I-Beam for instructions.
☐ Big Ass Fans does not recommend mounting the fan to a fabricated
I-beam.
☐ Do not mount the fan directly to an I-beam without the upper mount,
extension tube, and lower yoke.
☐ The I-beam must be part of the existing building structure.
☐ Install spacers if the flange thickness exceeds 3/8" (10 mm).
☐ For an angled I-beam or pitched roof, the beam flange width must
be 5" to 9-7/8" (127 to 251 mm).
See the instructions included with the Z-Purlin Kit.
☐ Purlin length: ≤ 30 ft (9.1 m)
☐ Purlin spacing: ≤ 5 ft (1.5 m)
☐ Purlins must be made from minimum 14 gauge steel.
☐ The angle iron length must be ≤ 5 ft (1.5 m) and 1 in. (25 mm) less
than the distance between purlins.
☐ Angle iron W x H x T = 3" x 3" x 1/4" (76 x 76 x 6 mm)
See the instructions included with the L-Bracket Kit.
☐ Beam thickness up to 14-3/8" (365 mm) for small upper mount or
8-3/8" to 19-1/8" (213 to 486 mm) for large upper mount.
☐ The installer must supply suitable 1/2"-13 Grade 8 mounting
hardware.
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