With the wiring in place the thermostat switch should work automatically.
Install attic fan thermostat.
To do this screw the thermostat cover in place and use your screwdriver to set the temperature at 105 degrees.
Run nm cable from the attic fan thermostat to the attic light.
You now need to set the temperature for the attic fan thermostat switch.
Leave enough cable at each end to work with.
Use the hammer and staples to secure the cable to the joists at 12 inch intervals.
Ideally the thermostat should be mounted to.
If the meter reads anything other than zero stop.
Check the fan s electrical connections with a voltmeter.
Installing the shutter center the front of the automatic shutter over the vent hole make sure the shutter s.
Shut off the power to the fan at the main service panel.
This way you don t have to cut a brand new hole but simply make the hole for the vent larger so it can accommodate the fan.
You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications.
Staple the cable within 8 inches of both the attic light box and the thermostat box.
Installing the shutter if the existing gable vent is smaller than the diameter of the fan you ll need to remove.
This is when the attic fan will kick in and start removing the hot air.
Mount the thermostat in the attic.
Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill.
Installing an attic fan step 1.