Installation Guide

ROOF CAP INSTALLATION INSTRUCTIONS
For 3” or 4” Round Duct
Plan installation carefully. Before installing roof cap, make
sure that birdscreen is in place. Refer to “MAINTENANCE”
section. Roof cap will accept 3” or 4” round duct. Tape all
joints with duct tape to prevent air and water leaks.
NOTE: DO NOT INSTALL THE ROOF CAP ON A FLAT ROOF.
1. Cut hole in roof approximately ½” larger than ductwork.
2. Insert ductwork through opening and run it back to fan.
Leave a maximum of ¾” of duct projecting above roof sur-
face on the high side.
3. Trim ductwork parallel to roof pitch.
MAINTENANCE
To replace damper flap or gasket material:
1. Remove birdscreen, using sharp pointed tool. Pull screen
down and pop it out.
2. Remove screw (Item #7) in center of damper plate assem-
bly and pull assembly out.
3. Pull out damper rod and lift damper flap out.
4. Replace defective or worn parts and reinstall damper flap
with rib in flap facing up.
5. Slide damper plate assembly into grooves on inside of cap
and replace screw. Make sure that damper opens freely.
6. Replace screen and position as shown.
NOTE: The high quality
paint coating on our out-
door accessories may
be used as the exte-
rior finish or as a
prime coat for the fin-
ish of your choice.
Apply the coating
best suited for the
special conditions of
your application.
99041929C
6. Carefully lift shingles and slide back flange of roof cap un-
der shingles. Nail flange to roof under shingles at top and
two sides. Nail directly to roof at bottom.
7. Use roof cement to seal shingles to top and sides of roof
cap. Seal all nail heads with roof cement as well.
NAILS
(Seal all nail heads
with roof cement)
ROOF CEMENT
(Seal shingles to roof cap
on sides and top)
¾"
MAX.
¾"
MAX.
4. Lay roof cap over ductwork and trace outling of roof flange
onto shingles.
2"
1¾"
1¾"
5. Trim shingles as shown, so they will fit snugly around hood
of roof cap when installed. Seal all around duct with roof
cement.
KEY 636 636AL
NO. PART NO. PART NO. DESCRIPTION
1 97006558 97011262 Housing
2 98005783 97005783 Bird Screen
3 98008277 98008277 Damper Plate
4 98005784 98005784 Damper Flap
5 99500326 99500326 Sealant Strip
6 98005785 98005785 Damper Rod
7 99150576 99150576 Screw