Ceiling Firestop/Floor Penetration Framing; Install Attic Insulation Shield - Heat & Glo COSMO32-IFT-B Installation Manual

C. Ceiling Firestop/Floor Penetra-
tion Framing
WARNING! Risk of Fire! DO NOT pack insu-
lation around the vent. Maintain clearances to
vent to prevent overheating.
A ceiling fi restop MUST be used between
fl oors and attics.
• SLP pipe only - Frame opening 9 in. x 9
in. (229 mm x 229 mm) whenever the vent
penetrates a ceiling/fl oor (see Figure 5.3).
• Frame the area with the same sized lumber
as used in ceiling/fl oor joist.
• The ceiling fi restop may be installed above or
below the ceiling joists when installed with an
attic insulation shield. It must be under joists
between fl oors that are not insulated. Refer
to Figure 5.4.
• Secure in place with nails or screws.
D. Install Attic Insulation Shield
WARNING! Fire Risk. The use of an attic
shield is required to prevent loose materials
or insulation from contacting the vent causing
overheating and a fi re.
The International Fuel Gas Code requires an
attic shield constructed of 26 gauge minimum
steel that extends at least 2 in. (51 mm) above
insulation.
• Attic insulation shields must meet specifi ed
clearances to combustible materials and be
secured in place.
• An attic insulation shield kit is available from
Hearth & Home Technologies. Contact your
dealer to order. Install attic insulation shield
according to instructions included with kit.
Heat & Glo • COSMO32-IFT-B, COSMO36-IFT-B, COSMO42-IFT-B Installation Manual • 2619-980 Rev. G • 7/20
Figure 5.3 Installing Ceiling Firestop
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
Figure 5.4 Installing the Attic Shield
ATTIC ABOVE
A
A
A
PIPE
SLP 9 in. (229 mm)
CEILING FIRESTOP
INSTALLED ABOVE CEILING
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