Heat & Glo • Soho24 • 2077-900 Rev. J • 01/07
17
Installing the Ceiling Firestop
• Frame an opening 10 inches by 10
inches whenever the vent system pen-
etrates a ceiling/
fl
oor (see Figure 6.3).
• Frame the area with the same sized
lumber as used in ceiling/
fl
oor joist.
• When installing a top vent vertical ter-
mination appliance the hole should be
directly above the appliance, unless the
fl
ue is offset.
• Do not pack insulation around the vent.
Insulation must be kept away from the
pipe.
Installing Attic Shield
Note:
An additional ceiling
fi
restop is not
required if attic shield is used.
• Frame opening for attic shield.
• Attic shield may be installed above or
below ceiling (see Figure 6.4).
• Secure with three fasteners on each
side.
• Fold tabs at top of attic shield in toward
vent pipe. Tabs must keep vent pipe
centered within shield.
• Field construct additional shield height if
insulation is deeper than height of attic
shield.
C. Vertical Penetration Framing
Figure 6.3
ATTIC ABOVE
10 IN. (254 MM)
HOLE SHOULD MEASURE
10 IN. X 10 IN.
(254 MM X 254 MM)
INSIDE TO INSIDE
10 IN.
(254 MM)
Fire Hazard
Keep loose materials or blown
insulation from touching the
vent pipe.
Figure 6.4 Installing the Attic Shield
•
National building codes recommend us-
ing attic shield to keep loose materials/
blown insulation from contacting vent.
•
Hearth & Home Technologies requires
the use of an attic shield.
3 FASTENER S
PER SIDE
BEND TABS IN
AROUND PIPE
ATTIC SHIELD INS TALLED
BELOW CEILING
ATTIC SHIELD INS TALLED
ABOVE CEILING
WARNING
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