Installation manual
9
Look through the hole and make sure there are no kinks or twists in the 
ducting. Pull the ceiling box down through the hole in the ceiling.  While 
holding it in place, install a 1-3/8” drywall screw through the drywall into the 
ange of the ceiling box on each side to temporarily hold the box in place.  
Remove ceiling grill and screws from its packaging. Center the grill over the 
ceiling box. Install the grill with the white screws provided by screwing 
through the ange of the ceiling box.  Some ceiling surfaces are uneven and 
may cause a small gap to be present. This can easily be caulked later if 
excessive. 
Repeat these steps at each location
Return to the attic and go to each location. Using the nylon straps and the pan 
head screws provided, support the duct to the framing.  Make sure the motor 
head is still level and the dampers still close naturally. This will stabilize the 
entire assembly. Replace any insulation that was removed. 
Repeat these steps at each location
VERY IMPORTANT!
 Remove the shipping tape from the back draft 
dampers. Make sure the dampers will open and close easily and without 
obstruction. 
Repeat these steps at each location
Once all of the QuietCool fans are hung, it’s time to go below and install the 
ceiling box and ceiling grill at each intake location. 
8.
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T
he installation is now complete except for the electrical work necessary to 
make them operate. The electrical wiring for the fan requires a 120 volt three 
prong outlet within 6 feet of the motor head in the attic.  
T
he outlet should be wired to and controlled by a two-gang or three-gang box 
installed in the hallway wall with a timer and switch for each fan. 
VERY IMPORTANT!
 Make sure the fan blade spins freely. This is very 
important to system operation. 
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