P
AGE
8
S
TOVE
I
NSTALLATION
(C
ONT
.) -
For qualified installers only!
Vent Requirements
!
Always maintain the required 1" clearance (air space) to combustible materials to prevent a fire
hazard. Do not fill air spaces with insulation.
!
The gas appliance and vent system must be vented directly to the outside of the building, and never
be attached to a chimney serving a separate solid fuel or gas-burning appliance. Each direct vent gas
appliance must use it's own separate vent system.
!
If the stove is installed at
an altitude over 3,000
feet the flame quality
will need to be carefully
evaluated. See
Addendum #1, "Altitude
Considerations", on page
39.
¥
When the vent passes
through a wall, a wall
thimble is required.
When the vent passes
through a ceiling, a
support box or firestop is
required. When the vent
passes through the roof,
a roof flashing and storm
collar are required.
Follow the instructions
and requirements
provided with the vent
when installing.
Use a firestop spacer whenever
passing through a ceiling
(Duravent Part #963)
Vertical Termination (# 991).
Use a roof flashing and storm collar
whenever passing through the roof
(Duravent Part #953 & #943 or #943S)
8-5/8"
Maintain a minimum 1"
clearance from vent to
any combustible (vent
is 6 5/8" diameter)
Use a support box
on exposed vent
Vertical Vent
Requirements
Use a wall thimble
whenever passing
through a wall
(Duravent Part #942)
Horizontal
Termination
Maintain a minimum 1" clearance from vent
to any combustible (vent is 6 5/8" diameter)
Minimum
Framing for
wall thimble
Horizontal Vent
Requirements
8-5/8"
Minimum framing
for fire stop
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Use Model GS Direct Vent manufactured by Simpson Dura-Vent
only
(or the Chimney Conversion
Kit - see Addendum #2). Follow the installation instructions included with the vent. For the nearest
Simpson Dura-Vent supplier, call (800) 835-4429. Part numbers and descriptions are listed below.
Straight Lengths
908B
6" Pipe Length, Black (interior)
907B
9" Pipe Length, Black (interior)
906
12" Pipe Length, Galvanized
906B
12" Pipe Length, Black (interior)
904
24" Pipe Length, Galvanized
904B
24" Pipe Length, Black (interior)
903
36" Pipe Length, Galvanized
903B
36" Pipe Length, Black (interior)
902
48" Pipe Length, Galvanized
902B
48" Pipe Length, Black (interior)
911B
11" to 14 5/8" Pipe, Adjustable, Black (interior)
Vent Terminations
981
Snorkel Termination (36" rise)
(for basement or raised
termination installations)
982
Snorkel Termination (14" rise)
(for basement or raised
termination installations)
984
Horizontal Square Termination
950
Vinyl Siding Standoff
991
Vertical Termination
Elbows
990
90
°
Elbow
990B
90
°
Elbow, Black (interior)
945
45
°
Elbow
945B
45
°
Elbow, Black (interior)
Penetration, Support Parts
942
Wall Thimble
941
Cathedral Ceiling Support Box
943
Flashing, 0/12 to 6/12 Roof Pitch
943S
Flashing, 7/12 to 12/12 Roof Pitch
953
Storm Collar
963
Ceiling Firestop
988
Wall Strap
¥
Apply high-temperature silicone to the inner and outer pipe before
assembling the sections (on the male, upper section). This seals
the inner pipe from the outer pipe. Slide the sections together and
turn 1/4 turn until the sections lock in place. Install three metal
screws through each joint to lock the outer section in place (see the
instructions included with the vent for further details).
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Horizontal sections require a 1/4" rise every 12" of travel
+
Exterior Vent Diameter = 6-5/8", Inner Vent Diameter = 4"
Apply a 1/8" (3 mm)
bead of high-
temperature silicone
to the inner and
outer pipe. The
silicone must seal
the inner pipe from
the outer pipe.
Silicone
Silicone
¥
Horizontal sections require non-combustible support every three feet (e.g.: plumbing tape)
