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2. From inside the attic, find the center point between the two
roof rafters and mark it as the center of the fan hole. Partially
insert a screw into the center point mark.
NOTE:
If you have a tile roof, you will need to move the
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tiles out of the way before tracing and cutting. (See Figure
2.1A)
3. Go to the roof. Using the screw as a reference point and the
provided template, trace out the 22" diameter circle.
4. Use a reciprocating saw to cut out the traced hole pattern
from the roof decking. Remove the cut out decking material
from around the hole as needed. (See Figure 2.1B)
5. If you have a shingle roof, insert the reciprocating saw
sideways between the shingles and roof decking. Starting
at the 3 o'clock position of the fan hole, begin cutting in a
sweeping motion under the shingles, cutting through any
roofing nails or staples. Continue cutting counterclockwise
around the fan hole until reaching the 9 o'clock position. Using
a roofing knife, cut a 4 inch horizontal slit in the shingles at the
9 o'clock and 3 o'clock positions of the hole, allowing the fan's
flashing to slide underneath the shingles.
6. Apply weatherproof material to the roof. (See Figure 2.1C)
7. Position the fan so that it is centered with the fan hole and
allow the power cord to hang freely from the bottom of the
fan unit. The power cord comes in 20 ft length.
(See Figure 2.1D)
NOTE:
Power cord CANNOT be used outdoors.
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8. Lifting the fan unit up at an angle, apply weatherproof caulking
to the bottom side of the fan unit. This will help keep the fan in
place and will seal nice and tight.
9. With all fan cables connected and hanging inside the fan hole,
slide the fan unit underneath the shingles until the fan reaches
the top of the hole. Secure the fan flashing to the roof. Finish
caulking around the fan and flashing it into the roof to make a
nice seal. (See Figure 2.1E)
10. If installing on a tile roof, cut tile appropriately and re-install
the tile to fit snuggly around the fan housing. (See Figure
2.1F)
6
Figure 2.1A
Figure 2.1B
Figure 2.1C
Figure 2.1D
Figure 2.1E
Figure 2.1F
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