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installation
Unit Installation with Horizon-
tal Termination
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
f i r e - p a r t s . c o m
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.
Notes:
a) Twist-lock procedure: Four indentations,
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" seal-
ant (supplied) to every inner pipe connection.
Failure to do so may result in drafting or per-
formance issues not covered under warranty.
58 | Grandview
G800C-1 Gas Fireplace
®
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
the rigid pipe adaptor.
Notes:
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 Exterior Vent
Termination Location.
c) Snorkel Terminations:
For installations requiring a vertical rise on
the exterior of the building, 14-inch and 36-
inch tall Snorkel Terminations are available,
as well as the standard Riser Vent. Follow
the same installation procedures as used
for standard Horizontal Termination. NEVER
install the snorkel upside down.
Diagram 2
*As specified in CGA B149 Installation Code. Local
codes or regulations may require different clearances.
o
elbow directly to
*Diagrams 3 & 4: As specified in CGA B149
Installation Code. Local codes or regulations
may require different clearances.
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.
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.
**
**Note: Riser Vent
is only for use in
above grade ter-
minations.
Diagram 3
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