How to attach a thermostat to an attic fan 1.
Install attic fan thermostat.
Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill.
Mount the thermostat in the attic.
Installing an attic fan step 1.
You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications.
Shut off the power to the fan at the main service panel.
Check the fan s electrical connections with a voltmeter.
With the wiring in place the thermostat switch should work automatically.
Installing the shutter center the front of the automatic shutter over the vent hole make sure the shutter s.
If the meter reads anything other than zero stop.
To do this screw the thermostat cover in place and use your screwdriver to set the temperature at 105 degrees.
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.
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.
Staple the cable within 8 inches of both the attic light box and the thermostat box.
Leave enough cable at each end to work with.
This is when the attic fan will kick in and start removing the hot air.
Installing the shutter if the existing gable vent is smaller than the diameter of the fan you ll need to remove.
To save time use an existing roof or gable vent to install your new attic fan.