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Heat & Glo • 550TRSI-AUF, 550TRSILP-AUF • 2079-980 Rev. N • 5/12
C. Install the Ceiling Firestop
A ceiling restop MUST be used between
oors and attics.
• DVP pipe only - Frame an opening 10 in.
x 10 in. (254 mm by 254 mm) whenever the
vent penetrates a ceiling/oor (see Figure
8.3).
• SLP pipe only - Frame opening 9 in. x 9
in. (229 mm x 229 mm) whenever the vent
penetrates a ceiling/oor (see Figure 8.3).
• Frame the area with the same sized lumber
as used in ceiling/oor joist.
• The ceiling restop may be installed above or
below the ceiling joists when installed with a
attic insulation shield. It must be under joists
between oors that are not insulated. Refer
to Figure 8.4.
• Secure with three fasteners on each side.
WARNING!RiskofFire!DONOTpackinsu-
lation around the vent. Insulation must be kept
back from the pipe to prevent overheating.
Figure 8.3 Installing Ceiling Firestop
Figure 8.4 Installing the Attic Shield
3 FASTENERS
PER SIDE
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
CEILING FIRESTOP
INSTALLED ABOVE CEILING
ATTIC ABOVE
A
PIPE
DVP
SLP
A
10 in. (254 mm)
9 in. (229 mm)
A