Broan Blower NuTone User Manual

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of 12
 
2
11" dia.
hole
20½"
11" dia.
hole
1"
ØØ
9
11
/
16
"
20½"
ØØ
18"
12
5
/
8
"
18"
12
11
/
16
"
1¼" dia. hole1¼" dia. hole
Roof Rafter
Roof Rafter
Roof Rafter
REMOVE SHINGLESREMOVE SHINGLES
Roof Rafter
Guide hole
(centered
between rafters)
Guide hole
(centered
between rafters)
12
11
/
16
"
21"
11" dia.
hole
22"
Guide hole
(centered between studs)
25"
29½"29½"
14
11
/
16"
11
13
/
16"14
5
/
8"
17"
Wall Stud
Wall Stud
11" dia.
hole
20"
1¼" dia. hole1¼" dia. hole
3
"
ØØ
ØØ
REMOVE
SIDING
REMOVE
SIDING
Guide hole
(centered between studs)
1. Choose a position on the outside wall. Make sure that no
wall studs, pipes or wires run through the opening area.
2. From inside, mark and drill a guide hole centered
between wall studs.
PREPARE THE INSTALLATION
LOCATION
ROOF INSTALLATIONS
25"
2"
7"
29-1/2"
2"
WALL INSTALLATIONS
1. Locate the blower on the rear slope of the roof. Place
it in a location to minimize duct run. The location should
be free of obstacles (T.V. leads, electrical lines, etc.).
If the blower top is level with the roof peak, it will not be
seen from the street. Keep this approximate location in
mind as you work from within the attic.
2. Mark and drill a guide hole centered between roof
rafters.
3. From the outside, use the guide hole as a starting point
to lay out the installation:
A. Use a T-square to measure 12
5
/
8
" to the left of the
guide hole, then up 12
11
/
16
" to locate the top-left
corner of the layout.
B. Starting from the top-left corner, mark the rectangular
cutout (21" W x 20½" H) and remove only the
shingles in this area.
C. Mark an 11" diameter hole centered on the guide
hole. Cut this hole through the roof board(s).
D. Mark and cut a 1¼" diameter hole through the roof
board(s) where shown.
4. For flat roof installations, build a curb that will mount the
blower at a minimum pitch of 2/12. Discharge end of the
blower should be pointed away from prevailing winds.
PREPARE THE INSTALLATION
LOCATION
3. From the outside, use the guide hole as a starting point
to lay out the installation:
A. Use a T-square to measure 14
5
/
8
" to the left of the
guide hole, then up 14
11
/
16
" to locate the top-left
corner of the layout.
B. Starting from the top-left corner, mark the rectan-
gular cutout (25" W x 29½" H) and remove only the
siding in this area.
C. Mark an 11" diameter hole centered on the guide
hole. Cut this hole through the wall.
D. Mark and cut a 1¼" diameter hole through the wall
where shown.

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