Viking DEV1200 Benutzerhandbuch

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.

1. Locate the ventilator 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 ventilator 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.

2

3. From the outside, use the guide hole as a starting point

to lay out the installation:
A. Use a T-square to measure 9

13

/

16

" 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 rectan-

gular cutout (18" 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

ventilator at a minimum pitch of 2/12. Discharge end of the
ventilator should be pointed away from prevailing winds.

3. From the outside, use the guide hole as a starting point

to lay out the installation:
A. Use a T-square to measure 11

13

/

16

" 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 (22" 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 roof board(s).

D. Mark and cut a 1¼" diameter hole through the roof

board(s) where shown.