BIG ASS FANS Isis, Installation Manual

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Isis
®
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12
4b. Fasten double angle irons to roof structure mounting points
CAUTION: The angle irons must be fastened to the roof structure at each end.
CAUTION: The angle irons with fan mounting holes should be positioned on the inside, facing each other.
Fasten the angle irons to the roof structure mounting points at each end with customer-supplied Grade 8 hardware as shown.
Do not
tighten the hardware until the fan has been mounted to the angle irons.
Proceed to step 5.
Angle Iron Hardware (Customer-Supplied):
a. (8) 1/2-13 Bolt
b. (16) 1/2” Washer
c. (8) 1/2” Nut
A
3”
(7.6 cm)
3”
(7.6 cm)
Ø 9/16”
(1.4 cm)
Thickness:
1/4” (6 mm)
Square Washer
b
a
d
b
c
Mounting Method: Angle Irons (cont.)
Angle Iron Hardware (BAF-Supplied):
d. (8) 3” Square Washer (see diagram)