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C. Install the Ceiling Firestop
A ceiling firestop MUST be used between
floors and attics.
• SLP pipe only - Frame opening 22,9 cm
x 22,9 cm whenever the vent penetrates
a ceiling/floor (see Figure 8.3).
• Frame the area with the same sized lumber
as used in ceiling/floor joist.
• The ceiling firestop may be installed above or
below the ceiling joists when installed with a
attic insulation shield. It must be under joists
between floors that are not insulated. Refer
to Figure 8.4.
• Secure with three fasteners on each side.
WARNING! Risk of Fire! DO NOT pack insu-
lation around the vent. Insulation must be kept
back from the pipe to prevent overheating.
32
Heat & Glo • SOHO-B-CEB, SOHO-N-CEB, SOHO-P-CEB • 2111-980 Rev. i • 3/13
Figure 8.3 Installing Ceiling Firestop
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
Figure 8.4 Installing the Attic Shield
ATTIC ABOVE
A
PIPE
A
SLP
22,9 cm
3 FASTENERS
PER SIDE
CEILING FIRESTOP
INSTALLED ABOVE CEILING
A
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