How to Install Air Vent Model WH362BDX

Find a hallway located as near as possible to the middle of the house. In a multistory house, the hallway must be on the top floor. Measure the distance between the walls on the ceiling to determine the center. Make a mark at the center point.

Drill a hole all the way through the ceiling and into the attic space. Insert a length of thin wire, such as coat hanger wire, through the hole.

Locate the wire in the attic. Find the nearest ceiling joist and clear the insulation away in a 4-by-4-foot square around the joist.

Verify no electrical wires or pipes cross the square and at least 30 inches of clearance exists between the ceiling joist and the roof.

Drill two locating holes on either side of the ceiling joist completely through the ceiling.

Cut out the template printed on the fan carton.

Make an X on the hallway ceiling halfway between the two ceiling joist locating holes. Measure the distance to each wall to find the center of the hall ceiling and adjust the X mark if necessary so it is centered

Pin the X mark in the center of the template to the X mark on the ceiling with a thumbtack. Confirm the template is straight by measuring the distance to both walls. Trace around the edge of the template with a pencil.

Cut out the traced hole on the ceiling using a reciprocating saw, saber saw or keyhole saw.

Test fit the fan shutter in the hole. Trim away any excess drywall, if necessary.

Examine the ceiling joist exposed by the hole and verify it is stable.

Cut through the ceiling joist in the attic using a reciprocating saw or saber saw. Cut the joist back 1 1/2 inches from the shutter cutout.

Cut two pieces of lumber in the same width as the ceiling joists to the measured length of the shutter cutout. Nail the pieces to the intact joists on each side of the shutter cutout, and to the ends of the center joist that was removed.

Nail framing lumber laying flat to the joists around all four sides of the shutter cutout in the attic. Replace any insulation pushed aside.

Transport the fan unit up into the attic. Center the fan over the shutter cutout with the frame of the fan resting on the framing lumber.

Nail 2-by-4-inch wood blocks to the framing lumber on all sides of the fan to secure the fan in place laterally.

Unbolt the motor from its storage mounting inside the fan. Position the motor on the motor bracket on the rear of the fan. Install the drive belt on the motor pulley and the fan pulley. Pull the motor outward on its bracket until the drive belt is taut. Tighten the motor mounting bolt.

Install or have an electrician install an electrical junction box with the supplied two-speed fan switch in the hallway wired into a circuit connected to the house breaker box. Follow manufacturer's instructions and local codes for wiring the switch to the fan motor in the attic.

Position the shutter in the shutter cutout from the hallway. Orient the shutter so that when it is opened, the vanes direct air toward the fan motor. Secure the shutter with the supplied six screws with white heads.

Turn on power at the breaker box.

Open windows and doorways in areas of the house to be ventilated. Close the flue in the fireplace.

Start the fan on high speed at the switch until the vanes are fully open. Reduce to slow speed, if desired.