BIG ASS FANS Isis, Installation Manual

Page: 19 / 60

11
Isis
®
WWW.BIGASSFANS.COM ©2011 DELTA T CORP. DBA BIG ASS FAN CO. ALL RIGHTS RESERVED
4a. Fasten single angle irons to roof structure mounting points
If installation requires double angle irons, i.e., span is greater than 8 ft (2.4 m), proceed to step 4b.
CAUTION: The angle irons must be fastened to the roof structure at each end.
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. Note: Big Ass Fans recommends orienting the angle irons
so that the horizontal legs are facing each other. Refer to the illustration below.
Proceed to step 5.
Angle Iron Hardware (Customer-Supplied):
a. (4) 1/2-13 Bolt
b. (8) 1/2” Washer
c. (4) 1/2” Nut
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)