Always remember to flip off the circuit breaker or remove the fuse when working with electricity.
Step 2: Determine Center:
If there is no central light fixture, determine where the center of the room is and if need be move a little off center just far enough between the joists to fasten the side of the fan’s new junction box directly to the joist.
Step 3: Install Junction Box:
Cut a hole large enough for the junction box to be slipped in. If it’s next to the joist, drill holes in its side and screw it to the joist. Attach the box to the joist with the two 1 1/2-inch No. 10 hex-head screws provided. Drive in the screws with a drill/driver equipped with a 5/16-inch nut-driver tip.
Installation between joists is OK, too. Fasten the box to a 2×4 header nailed between the joists. If there isn’t a 2×4 you can insert one through the junction box’s hole, nailing it to each joist. If you can’t insert one, you may have to make a bigger hole and patch it later.
Step 4: Assemble the Fan:
Be sure to follow the specific instructions with the unit that you buy. Regardless of the manufacturer’s instructions, if the fan blades are less than a screwdriver’s length away from the ceiling, it may be best to install the blades before hanging the fan.
Step 5: Install Hanger Pipe:
The hanger pipe is usually placed into its hole on top of the motor. The wires are then drawn up in the center. A set-screw is tightened securely to make sure the pipe stays in place after it is threaded down.
Step 6: Attach the Fan Blades:
To attach the fan blades, set the motor unit down where it will be stable.
Most fan blades have a two-pronged attachment, using screws that come through holes in the blades and into the flanges. These need to be tightened, but do not over tighten. Do not damage the threads or the finish on the blades. On some fans you’ll see the flanges, or prongs, also need to be mounted to the motor housing. If this is the case, mount them before the flanges are mounted to the blades themselves.
Mounting the Fan to the Box
Step 1: Install Hanger Bracket:
Install the hanger bracket on the box with screws and lock washers. Using lock washers will help prevent fan vibration from loosening the screws over time.
Step 2: Wire the Unit:
Be sure to connect the black house wires to the black fan wires, and the white house wires to the white fan wires.
Step 3: Ground the Fan:
The fan should be electrically grounded to both the metal box and the fan. The grounding wires will be either green or bare copper. A green grounding pigtail attached to the box by a bonding screw will make your work easier. Use a wirenut to ground the wires from the box; the fan and the power supply together.
Tip: If the fan wobbles when it runs, its blades may be unbalanced. To correct this, try interchanging two adjacent blades. If that doesn’t work, take all the blades off and weigh each one on a food or postal scale. If any is underweight, tape a soft object such as a pencil eraser or modeling clay to the top center of the blade, making its weight the same as the others. Fan balancing kits with detailed instructions are also available. Reinstall the blades and the fan should run smoothly.