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DURA-VENT HORIZONTAL
TERMINATIONS
Install the vent system according to the
manufacturer's instructions included with the
components.
1) Set the unit in its desired location. Check to
determine if wall studs or roof rafters are in
the way when the venting system is attached.
If this is the case, you may want to adjust the
location of the unit. Rough in the gas preferably
on the right side of the unit and the electrical
(junction block is on the left side) on the left.
2) Direct Vent pipe and fittings are designed with
special twist-lock connections to connect the
venting system to the appliance flue outlet. A
twist-lock appliance adaptor is an available
option that must be used in conjunction with
the Simpson Dura-Vent Direct Vent system.
3) Put a bead of Mill-Pac inside the outer section
of the adapter and on the inner collar. Slip the
adapter over the existing inner and outer flue
collar and fasten to the outer collar only with
the 3 supplied screws (drilling pilot holes will
make this easier). Level the fireplace and fasten
it to the framing using nails or screws through
the nailing strips.
4) Assemble the desired combination of pipe and
elbows to the appliance adaptor and twist-lock
for a solid connection.
Note: a) Twist-lock procedure: Four inden-
tations, located on the female ends
of pipes and fittings, are designed
to slide straight onto the male ends
of adjacent pipes and fittings, by
orienting the four pipe indentations
so they match and slide in to the four
entry slots on the male ends, Diagram
1. Push the pipe sections completely
together, then twist-lock one section
clockwise approximately one-quarter
turn, until the two sections are fully
locked. The female locking lugs will
not be visible from the outside, on
the Black Pipe or fittings. They may
be located by examining the inside of
the female ends.
Diagram 1
NOTE: For best results and optimum perfor-
mance with each approved venting system,
it is highly recommended to apply "Mill-Pac"
sealant (supplied) to every inner pipe connec-
tion. Failure to do so may result in drafting or
performance issues not covered under warranty.
b) Horizontal runs of vent must be supported
every three feet. Wall straps are available for
this purpose.
5) Mark the wall for a 10" x 10" square hole. The
center of the square hole should line up with
the centerline of the horizontal pipe. Cut and
frame the 10 inch square hole in the exterior
wall where the vent will be terminated. If the
wall being penetrated is constructed of non-
combustible material, i.e. masonry block or
concrete, a 7"(178mm) dia. (7-1/2"(191mm)
dia. for flex) hole is acceptable.
Note: With Dura-
Vent, the minimum
height is achieved
by installing a 90
o
elbow directly to
the flue adaptor.
Diagram 2
Note:
a) The horizontal run of vent must be level, or
have a 1/4 inch rise for every 1 foot of run
towards the termination. Never allow the
vent to run downward. This could cause
high temperatures and may present the
possibility of a fire.
b) The location of the horizontal vent
termination on an exterior wall must meet all
local and national building codes, and must
not be blocked or obstructed. For External
Vent Terminal Locations, see the "Exterior
Vent Termination Locations" section.
c) Snorkel Terminations:
For installations requir-
ing a vertical rise on the
exterior of the building,
14-inch and 36-inch tall
Snorkel Terminations
are available,
as well as the
s t a n d a r d
Riser Vent.
Follow the
same in-
stallation
p r o c e -
dures as
used for
s t a n d a r d
H o r i z o n -
tal Termi-
n a t i o n .
N E V E R
install the
snorkel upside down.
*Diagrams 3 & 4: As specified in CGA B149
Installation Code. Local codes or regulations
may require different clearances.
Below Grade Installation
If the Snorkel Termination must be installed below
grade, i.e. basement application, proper drainage
must be provided to prevent water from entering
the Snorkel Termination. Refer to Diagram 4. Do
not attempt to enclose the Snorkel within the
wall, or any other type of enclosure.
Diagram 4
NOTE: For Snorkel terminations in
ABOVE grade installations,
follow national or local code
requirements.
6) The arrow on the vent cap should
be pointing up. Insure that the 1-1/2"
clearances to combustible materials
are maintained (Diagram 4). Install the
termination cap.
The four wood screws provided should
be replaced with appropriate fasteners for
stucco, brick, concrete, or other types of
sidings.
P36E-11 Zero Clearance Direct Vent Gas Fireplace
installation
Note: Riser Vent
is only for use
in above grade
terminations.
Diagram 3
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39
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