Bigass 4900 Manuel D'installation page 19

D. Fasten angle irons to roof structure mounting points
Single Angle Iron
Fasten the angle irons to the roof structure mounting
points at each end with Grade 8 hardware as shown.
Do not tighten the hardware until the upper mount
has been mounted to the angle irons. We recommend
orienting the angle irons so that the horizontal legs
are facing each other (or the vertical legs are on the
outside).
Grade 8 Hardware (Installer-Supplied):
a. (4) 1/2-13 Bolt
b. (8) 1/2" Washer
c. (4) 3" Square Washer (supplied; see diagram)
d. (4) 1/2-13 Nylock Nut
Single Angle Irons
a
b
c
b
d
Vertical walls are
to the outside
Square Washer
3" (7.6 cm)
Ø 9/16"
(1.4 cm)
Thickness:
1/4" (6 mm)
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Double Angle Iron
Fasten the angle irons to the roof structure mounting
points at each end with Grade 8 hardware as shown.
The angle irons with fan mounting holes should be
positioned on the inside, facing each other. Do not
tighten the hardware until the upper mount has
been mounted to the angle irons.
Grade 8 Hardware (Installer-Supplied):
a. (8) 1/2-13 Bolt
b. (16) 1/2" Washer
c. (8) 3" Square Washer (supplied; see diagram)
d. (8) 1/2-13 Nylock Nut
3"
(7.6 cm)
Double Angle Irons
ALL RIGHTS RESERVED.
a
b
c
b
d
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