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Heatilator • AVEO Series DV • 4058-210 Rev P • 1/13
35
3 fasteners
per side
Ceiling firestop
installed below ceiling.
Ceiling firestop
installed above ceiling.
Install attic insula-
tion shields before
or after installation
of vent system.
ATTIC ABOVE
A
PIPE
DVP
SLP
A
10 in. (254 mm)
9 in. (229 mm)
A
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.
Figure 8.3
Installing Ceiling Firestop
Figure 8.4 Installing the Attic Shield
WARNING! Risk of Fire!
DO NOT pack insula-
tion around the vent. Insulation must be kept back
from the pipe to prevent overheating.