8’ - 24’ POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
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26
Installing Airfoils
Big Ass Fans recommends completing electrical installation (p. 27) before installing the airfoils.
WARNING: Disconnect power to the fan before installing the airfoils.
a
b
1. Attach Winglets to Airfoils (Powerfoil,
PowerfoilPlus Only)
Attach the winglet to the airfoil using the Winglet Hardware as shown.
You will need to use both a Phillips head and flat head screwdriver to
properly secure the fasteners.
ATTENTION: The Powerfoil winglets and PowerfoilPlus winglets will
be attached the same way using the same hardware kit.
Attach winglets to all 10 airfoils before attaching the airfoils to the fan.
Winglet Hardware Kit (BAF-Supplied):
a. (10) 10-24 x 1/2” Bolt
b. (10) 10-24 x 3/4” Barrel
2. Attach Airfoils to Hub
WARNING: Disconnect power to the fan before installing
the airfoils.
Slide the airfoils onto the tabs of the fan hub.
An airfoil will
only attach to the fan hub in one direction. Do not force
an airfoil into place.
Attach the 10 airfoil retainers using the Airfoil Hardware.
Moving clockwise around the fan hub, position the airfoil
retainers end over end as shown. Hole A should be positioned
over top of Hole B.
Do not tighten the bolts until all the
airfoil retainers have been attached!
First, tighten the bolts along the outside perimeter to 29 ft·lb
f
(39 N·m) using a 1/2” socket with torque wrench.
Second, tighten the bolts along the inside perimeter to 29 ft·lb
f
(39 N·m) using a 1/2” socket with torque wrench.
Airfoil Hardware Kit (BAF-Supplied):
a. (20) 5/16-18 x 2’’ GR 8 Bolt
b. (40) 5/16” Flat Washer
c. (20) 5/16-18 Nylock Nut
b
c
a
b
Hole B
Hole A
Airfoil Retainer
