Installation Guide

BIG ASS FAN 2025

6. Attach upper mount and upper mounting brace (to extension tube)

Note: To facilitate installation, Big Ass Fans recommends that the extension tube is horizontal with

the rectangular access hole facing up during this step. Wiring and the and safety cable are not

shown in the illustrations.

Insert the upper mounting brace into the top of the extension tube and align the four (4) mounting

holes in the brace with the four (4) mounting holes at the top of the tube as shown on the right.

Position the power supply cable, controller input cable, and safety cable in any of the four (4)

spaces between the upper mounting brace and the extension tube as shown below. Note: The

cables can go in any of the four spaces. They do not all need to be in the same space.

Attach the upper mounting brace (inside the extension tube) and the upper mount to the extension

tube using the Extension Tube Hardware as shown below. Tighten the hardware so that it is

snug, but do not torque.

Extension Tube Hardware (BAF-Supplied):

a. (2) M10 x 90 mm Socket Head Cap Screw

b. (4) M10 Flat Washer

c. (2) M10 Nylock Nut

5. Route wiring and safety cable into extension tube

Note: To facilitate installation, Big Ass Fans recommends that the extension

tube is horizontal with the rectangular access hole facing up during this step.

To route the wiring and safety cable into the extension tube:

1. Route the end of the controller input cable with the wiring harness on it (the

end without the three loose wires) down into the top of the extension tube

and out the rectangular access hole as shown.

2. Route the end of the power supply cable with the wiring harness on it down

into the top of the extension tube and out the rectangular access hole as

shown.

3. Route the end of the safety cable with the lug on it down into the top of the

extension tube and out the bottom of the tube as shown.

Power Supply

Cable

Safety Cable

Extension tube with upper

mounting brace inside

(view from above)

Spaces for cables

(use any of the four)

Upper

Mounting

Brace

Upper Mounting Brace

Installing the Fan (cont.)

Access Hole

Controller Input

Cable