Install Attic Insulation Shield - Heatilator CNXT4236IT Owner's Manual

D. Install Attic Insulation Shield
WARNING
Fire Risk
Keep loose materials or blown insulation
from touching the vent pipe.
• National building codes recommend using
attic shield to keep loose materials/blown
insulation from contacting vent.
• Hearth & Home Technologies requires
the use of an attic shield.
Flat Ceiling Installation
• Remove one shield from box.
Note: Cut previously installed batt insulation to make room
for the attic insulation shield.
• Wrap shield around pipe if pipe is already installed in area
to be insulated.
• Match the three holes in each side and fasten with three
screws to form a tube.
• Bend four tabs inward on bottom of shield where it rests on
the ceiling fi restop to maintain the air space between the
pipe and shield. Set the shield on the ceiling fi restop.
• Bend all tabs inward 90° around the top of the shield.
These tabs must be used to prevent blow-in insulation from
getting between the shield and vent pipe, and to maintain
clearance.
Vaulted Ceiling Installation
• The attic insulation shield has been laser-etched with cut
lines and ceiling pitches to make fi eld trimming easier.
• Remove one shield from box.
Note: Cut previously installed batt insulation to make room
for the attic insulation shield.
• Cut the attic insulation shield (if application is for vaulted
ceiling) using a laser-etched cut line, to fi t your ceiling
pitch. Snip cut edge to create three bend tabs.
• Wrap shield around pipe if pipe is already installed in area
to be insulated.
• Match the three holes in each side and fasten with three
screws to form a tube.
• Bend four of the remaining tabs inward 90° on bottom
of shield to maintain the air space between the pipe and
shield. Cover the resulting holes with aluminum tape. Set
the shield on the ceiling fi restop.
• Bend all tabs inward 90° around the top of the shield.
These tabs must be used to prevent blow-in insulation from
getting between the shield and vent pipe, and to maintain
clearance.
28 Heatilator • Caliber CNXT Series • 4047-132 Rev P • 11/07
Bend all tabs inward
90° to maintain
clearance and
prevent insulation
from falling inside
Figure 6.6 Attic Insulation Shield
Laser-etched
cut lines
Insert 3
screws
Bend 4 tabs
inward 90°
to maintain
clearance