Install The Ceiling Firestop - Heatilator EDV3633 Owner's Manual

C. Install the Ceiling Firestop
A ceiling firestop MUST be used between
floors and attics.
• Frame opening 9 in. x 9 in. (229 mm x
229 mm) whenever the vent penetrates
a ceiling/floor (see Figure 8.).
• 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
insulation around the vent. Insulation must be
kept back from the pipe to prevent overheat-
ing.
Figure 8.3 Installing Ceiling Firestop
Ceiling firestop
installed below ceiling.
Figure 8.4 Installing the Attic Shield
Heatilator • Eclipse • 4049-229 Rev I • 08/09
Attic Above
9 in. (229 mm)
9 in.
(229 mm)
Hole should measure
9 in. x 9 in.
(229 mm x 229 mm)
inside to inside
Install attic insula-
tion shields before
or after installation
of vent system.
3 fasteners
per side
Ceiling firestop
installed above ceiling.