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Hole B
Hole A
Airfoil Retainer
A. Attach winglets to airfoils
Note: Check each airfoil to ensure the AirFence is still
securely attached.
Attach a winglet to each airfoil using the Winglet
Hardware. Both a Phillips head and flat head screwdriver
are required to properly secure the fasteners. Attach
winglets to all eight airfoils before attaching the airfoils
to the fan.
Winglet Hardware:
a. 10-24 x 3/4” Barrel
b. 10-24 x 1/2” Bolt
B. Attach airfoils to hub
Slide airfoils onto the tabs of the fan hub. The airfoils must be attached to the fan hub with the curved sides facing
downward.
Attach the airfoil retainers with the Airfoil Hardware. Moving clockwise around the fan hub, position the airfoil
retainers end over end as shown. Hole A of the retainer should be positioned over top of Hole B. Do not tighten
the bolts until all the airfoil retainers have been attached!
Tighten the bolts along the outer perimeter to 29 ft·lb (39.3 N·m) using a torque wrench and 1/2” socket. After the
outer perimeter bolts are torqued, tighten the bolts along the inner perimeter to 29 ft·lb (39.3 N·m) using a torque
wrench and 1/2” socket.
Airfoil Hardware:
a. 5/16-18 x 2’’ GR 8 Bolt
b. 5/16” Flat Washer
c. 5/16-18 Nylock Nut
13. Install the Airfoils
ATTENTION
If the AirFence™ accessory was included with your fan order, examine each AirFence to ensure it is properly
installed on the airfoil.
Disconnect power to the fan before installing the airfoils.
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