11
20307394
4" x 6
5
⁄
8
" SLP Termination Kit
FP1973
flex pipe bend
UL1777
Flex Vent
5" Radius
Install the Ceiling Firestop
• Frame an opening 9 in. x 9 in. (229 mm x 229 mm)
whenever the vent system penetrates a ceiling/floor
(see Figure 3)
• Frame the area with the same sized lumber as used in
ceiling/floor joist.
• When installing a top vent vertical termination appliance
the hole should be directly above the appliance, unless
the flue is offset.
• The ceiling firestop may be installed above or below
the ceiling. Refer to Figure 4.
• Secure with three fasteners on each side.
• Do not pack insulation around the pipe. Insulation must
be kept away from the pipe.
• The gap between the vent pipe and firestop may be
sealed.
Figure 2 Minimum Radius for Flex Vent Section
Attic Above
9 in. (229 mm)
Hole should measure
9 in. x 9 in.
inside to inside
9 in. (229 mm)
Figure 3 Installing Ceiling Firestop
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.
Figure 4 Installing Ceiling Firestop & Attic Insulation Shield
Install Attic Insulation Shield
WARNING
FIRE RISK. DO NOT allow loose materials or insu-
lation to touch vent. VCG/HHT REQUIRES
the use
of an attic shield.
The National Fuel Gas Code ANSI Z223.1 requires an
attic shield constructed of 26 gauge minimum metal
that extends at least 2 in. (51 mm) above insulation.
Attic shields must meet specified clearance and be
secured in place.
