Vent Requirements - Lopi Heritage Bay DV Owner's Manual

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Vent Requirements

! Always maintain the required 1" (25 mm) 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 heater is installed at an
altitude over 3,000 (1,000 M)
feet the flame quality will
need to be carefully
evaluated. See Addendum
#1, "Altitude
Considerations", on page 35.
¥ 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)
¥ Apply high-temperature silicone to the male section of inner pipe
(on the upper section of vent) so the silicone seals the inner pipe
from the outer pipe when the sections are assembled. 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).
NOTE: You may screw the first section of vent to the appliance.
¥ Horizontal sections require a 1/4" (6 mm) rise every 12" (300 mm) of travel
+ Exterior Vent Diameter = 6-5/8" (170 mm), Inner Vent Diameter = 4" (100 mm)
¥ Horizontal sections require non-combustible support every 36" (910 mm) (e.g.: use plumbing tape)
I
NSTALLATION
Use a roof flashing and storm collar
whenever passing through the roof
(Duravent Part #953 & #943 or #943S)
( .)
CONT
- For Qualified Installers Only!
Vertical Termination
(Duravent Part # 991)
Use a firestop spacer whenever
passing through a ceiling
(Duravent Part #963)
Minimum framing
for fire stop
8-5/8"
(220 mm)
Use a support box
on exposed vent
Use a wall thimble
whenever passing
through a wall
(Duravent Part #942)
8-5/8"
(220 mm)
Minimum
Framing for
wall thimble
Maintain a minimum 1" (25 mm)
clearance from vent to any combustible
(vent is 6 5/8" (170 mm) 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)
Vertical Vent
Requirements
Maintain a minimum 1"
(25 mm) clearance from
vent to any combustible
(vent is 6 5/8" (170 mm)
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
Apply a 1/8" (3 mm)
bead of high-
temperature silicone
to the inner pipe.
The silicone must
seal the inner pipe
from the outer pipe.