Install The Ceiling Firestop - Heatilator Direct Vent Gas Appliance CD4236ILR 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 8.4).
• SLP pipe only - Frame opening 9 in. x
9 in. (229 mm x 229 mm) whenever the
vent penetrates a ceiling/floor (see Figure
8.4).
• 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 8.5.
• 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.
Figure 8.4 Installing Ceiling Firestop
Ceiling firestop
installed below ceiling.
Figure 8.5 Installing the Attic Shield
Heatilator • Caliber CD Series • 4040-263 Rev N • 11/08
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)
35