PAGE 10
1. Choose a location on the roof that minimizes the duct run. Avoid obstacles such as TV
leads, electric lines, etc. If remote blower top is level with roof peak, it will not be seen
from street. Remember this location as you work from inside the attic. Measure THE
DISTANCE BETWEEN YOUR RAFTERS BEFORE YOU BEGIN. Make sure you have enough
room between rafters for electrical and duct holes. (See
FIGURE 2 and 3)
2. CLOSE TO YOUR CHOSEN LOCATION FROM
THE INSIDE
OF YOUR ATTIC OR CRAWL
SPACE. Start by marking and drilling a pilot hole up thru the roof
halfway between
roof
rafters.
3.
From the outside
, using the guide hole as a starting point, mark the rectangular cut-
out as indicated in FIGURE 2 & 3. Remove
ONLY
the shingles in
THIS AREA
.
RB1200 = 27 1/2” wide x 34” high , RB900 = 17 3/4” wide x 23 1/4” high
4. Mark an 11” diameter circle around the ducting guide hole as indicated in FIGURE 2 and
3. Mark the center of the 1-1/4” diameter hole for the electrical wiring as indicated in
FIGURE 2 and 3.
5. Break the electrical knock out hole in the back of the blower. Bring proper electrical
wiring through the knockout hole into the blower and secure it according to local codes.
6. Cut out the roof boards along the 11” diameter circle. Drill the 1 - 1/4” diameter electrical
wiring hole.
7. Remove roofing nails from the upper two-thirds of the shingles to allow the back
flashing sheet on the remote blower housing to fit
under
them. See FIGURE 4.
8. Center the remote blower ring in the 11” diameter hole, making sure that the 1 - 1/4”
diameter electrical wiring hole in the roof lines up with the hole in the wiring box.
9. Attach the remote blower to roof or frame using screws appropriate for your
installation. All four holes in the back panel must be sealed to prevent moisture that may
get inside the remote blower housing from leaking into the home.
10. Seal all the shingles around the remote blower housing, flashing sheet, and
mounting screw heads or frame with a good grade of roofing cement. Top and side
flanges of the back plate may be covered with trim. It is recommended that electrical
connection be made and checked first. Do not block the vent grill opening at the bottom
of the trim. Doing so will decrease blower performance.
11. CHECK FOR FREE MOVEMENT OF THE DAMPER
12. Go to “electrical connections”, Page 16.
Roof installations (See Page 12 for Flat roof installations)
