Install The Ceiling Firestop - Heatilator ADVT3428 Owner's Manual

C. Install the Ceiling Firestop
A ceiling fi restop MUST be used between fl oors
and attics.
• DVP pipe only - Frame an opening 10 in. by
10 in. (254 mm by 254 mm) whenever the
vent penetrates a ceiling/fl 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/floor (see Figure 8.3).
• 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 a
attic insulation shield. It must be under joists
between fl oors that are not insulated. Refer
to Figure 8.4.
• Secure with three fasteners on each side.
WARNING! Risk of Fire! DO NOT pack insula-
tion around the vent. Insulation must be kept back
from the pipe to prevent overheating.
Figure 8.3 Installing Ceiling Firestop
Ceiling firestop
installed below ceiling.
Figure 8.4 Installing the Attic Shield
Heatilator • AVEO Series DV • 4058-210 Rev F • 10/08
ATTIC ABOVE
PIPE
DVP
SLP
Install attic insula-
tion shields before
or after installation
of vent system.
3 fasteners
per side
Ceiling firestop
installed above ceiling.
A
A
A
10 in. (254 mm)
9 in. (229 mm)
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