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MODEL 804701
Page 2
OUTSIDE - ROOF VIEW
OUTSIDE - ROOF VIEW
OUTSIDE - ROOF VIEW
OUTSIDE - ROOF VIEW
10 Cover
10 Cover
Screws
Screws
10 Cover
Screws
Drill 6
Mounting
Holes
Remove
roofing
nails from
top 2/3 of
shingles.
Remove
roofing
nails from
top 2/3 of
shingles.
Bird Screen
Bird Screen
Flashing
Sheet
Flashing
Sheet
Drill 6
Mounting
Holes
Damper
ROOF MOUNT
INSTALLATION
For use with Wolf CTWH30/CTWH36 wall mount, IH4227 island chimney hoods, DD30R/DD36R downdraft ventilators, 18” tall
island/wall hoods & 12” tall liners.
PREPARE THE ROOF
WIRE THE VENTILATOR
11" dia.
hole
20½"
11" dia.
hole
1"
9
11
/
16
"
20½"
18"
12
5
/
8
"
18"
12
11
/
16
"
1¼" dia. hole
1¼" dia. hole
Roof Rafter
Roof Rafter
Roof Rafter
REMOVE SHINGLES
REMOVE SHINGLES
Roof Rafter
12
11
/
16
"
21"
Pilot Hole
(centered
between rafters)
Pilot Hole
(centered
between rafters)
From inside the attic space:
q 1
Drill a PILOT HOLE up through the roof, centered between
ROOF RAFTERS.
From outside - on the roof:
q 2
Measure and mark the 21" x 20½" rectangle. Cut and
remove only the shingles inside this rectangle.
q 3
Measure and mark the 11" DIAMETER HOLE and the
1¼" DIAMETER HOLE. Cut these holes all the way
through the roof.
For flat roof installations:
q 4
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.
7"
2"
29½"
25"
2"
BLACK TO BLUE
WHITE
TO
BROWN
120
VAC
LINE
IN
GROUND
TO
GROUNDING
SCREW
INSTALL THE VENTILATOR
q 5
Remove 10
COVER SCREWS
and lift off
ventilator cover.
q 6
Feed the electric
power cable
through the 1¼"
DIAMETER HOLE
and connect cable
to ventilator with a
proper connector
for the type of
cable being used.
q 7
Connect BLACK
TO BLUE, WHITE
TO BROWN, and
GROUND TO
GROUNDING
SCREW.
q 8
Remove roofing nails from top 2/3 of shingles around cut-
out area.
q 9
Slide the ventilator's FLASHING SHEET up and under the
loosened shingles until ventilator's discharge collar fits
into 11" diameter hole.
q 10
Use the 6 screws (provided) to attach the ventilator to the
roof. DRILL 6 MOUNTING HOLES inside the ventilator,
as necessary.
q 11
Seal the screw heads, loosened shingles, and edges of
the flashing sheet, with a good grade of roofing cement.
q 12
Check for free movement of the spring-loaded DAMPER,
and re-install the ventilator cover. Turn on power and
check operation.
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