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Installation
8
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.
• This appliance is equipped only for
altitudes 0-2000 feet. However, our
in-house testing has shown that the
unit operated at altitudes to 8000 ft.
!
Failure to adjust the air shutter
properly may lead to improper
combustion which can create a safety
hazard. Consult your dealer or
installer if you suspect an improperly
adjusted air shutter.
•
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
provided with the vent (from
Duravent®) for installing these items.
•
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)
•
Slide the vent sections together and turn 1/4 turn until the sections lock in place.
•
Screws are not required to secure the vent. However, three screws may be used to
secure vent sections together if desired.
•
High temperature sealant is recommended at the appliance starter section connection
(use high-temperature silicone or Mill-Pac®).
•
If disassembly is required, at time of re-assembly check to see if the vent creates a tight
fit. If it does not, apply high temperature sealant to the joints of the affected sections.
•
Horizontal sections require a 1/4" rise every 12" of travel
•
Horizontal sections require non-combustible support every three feet (e.g.: plumbing
tape)
Travis Industries
(for qualified installers only)
Vertical Termination
(Duravent Part # 991)
Use a roof flashing and storm collar
whenever passing through the roof
(Duravent Part #953 & #943 or #943S)
Use a firestop spacer whenever
passing through a ceiling
(Duravent Part #963)
Minimum framing
for fire stop
8-5/8"
Use a support box
on exposed vent
Use a wall thimble
whenever passing
through a wall
(Duravent Part #942)
8-5/8"
Minimum
Framing for
wall thimble
Maintain a minimum 1" clearance
from vent to any combustible
(vent is 6 5/8" diameter)
Vent Terminations
981
Snorkel Termination (36" rise)
(for basement installations)
982
Snorkel Termination (14" rise)
(for basement 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)
4 0 3 0 2 0 6
Vertical Vent
Requirements
Maintain a minimum 1"
clearance from vent to
any combustible (vent
is 6 5/8" diameter)
Horizontal Vent
Requirements
Horizontal Termination
(Duravent Part #984)
Penetration, Support Parts
942
Wall Thimble
940
Optional Wall Thimble Cover
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
9 3 5 0 8 1 1 7
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