PREPARE THE INSTALLATION LOCATION
ROOF INSTALLATIONS
PREPARE THE INSTALLATION LOCATION
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.
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.
2. Mark and drill a guide hole centered between roof | Ø | |
rafters. | ||
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20"17"
Ø |
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| 18" |
| 1¼" dia. hole |
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Ø |
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| Guide hole |
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1¼" dia. hole |
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| 3" | ||||
1411/16" | (centered between studs) | ||||||
| REMOVE SHINGLES | ||||||
1211/16" | 1" |
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RafterRoof | StudWall |
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RoofRafter | 20½" |
| Stud | 29½" | |||
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Guide hole |
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(centered | 11" dia. |
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| 11" dia. |
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between rafters) | hole |
| REMOVE | Wall |
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| SIDING |
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| 115 |
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| 912 //168" |
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| 18" |
| 1114135//168"" |
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| 21" |
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25"2"
3.From the outside, use the guide hole as a starting point
to lay out the installation: | 3. From the outside, use the guide hole as a starting point | ||||||
A. Use a | |||||||
guide hole, then up 1211/16" to locate the | to lay out the installation: |
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corner of the layout. | A. Use a | ||||||
guide hole, then up 1411/16" to locate the | |||||||
B. Starting from the | |||||||
corner of the layout. |
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lar cutout (21" W x 20½" H) and remove only the |
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B. Starting from the | |||||||
shingles in this area. | |||||||
lar cutout (25" W x 29½" H) and remove only the | |||||||
C. Mark an 11" diameter hole centered on the guide | |||||||
siding in this area. |
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hole. Cut this hole through the roof board(s). |
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C. Mark an 11" diameter hole centered on the guide | |||||||
D. Mark and cut a 1¼" diameter hole through the roof | |||||||
hole. Cut this hole through the wall. | |||||||
board(s) where shown. | |||||||
D. Mark and cut a 1¼" diameter hole through the wall | |||||||
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2" |
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7"
25"2"
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. 2
