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P48-2 Zero Clearance Direct Vent Gas Fireplace 23
Diagram 7
Diagram 6
9) Install wall thimble in the center of the 11"
(279mm) square and attach with wood
screws (Diagram 7).
Diagram 5
6) The arrow on the vent cap should be
pointing up. Insure that the 1-1/4"(32mm)
clearances to combustible materials
are maintained (Diagram 5). Install the
termination cap.
Note: If installing termination on a siding
covered wall, a vinyl siding standoff
or furring strips must be used to
ensure that the termination is not
recessed into the siding.
The four wood screws provided should
be replaced with appropriate fasteners for
stucco, brick, concrete, or other types of
sidings.
7) Before connecting the horizontal run of vent
pipe to the vent termination, slide the Wall
Thimble (Part # 1247) over the vent pipe.
8) Slide the appliance and vent assembly
towards the wall carefully inserting the
vent pipe into the vent cap assembly. It is
important that the vent pipe extends into the
vent cap suffi cient distance so as to result
in a minimum pipe overlap of 1-1/4 inches
(32mm). Secure the connection between the
vent pipe and the vent cap by attaching the
two sheet metal strips extending from the
vent cap assembly into the outer wall of the
vent pipe. Use the two sheet metal screws
provided to connect the strips to the pipe
section. See Diagram 6.
INSTALLATION
UNIT INSTALLATION
WITH HORIZONTAL
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 fi ttings are designed with
special twist-lock connections to connect the
venting system to the appliance fl ue outlet. A
twist-lock appliance adaptor is an available
option that must be used in conjunction with
the Simpson Dura-Vent Direct Vent GS
system. Install the adaptor after the unit is
set in its desired location otherwise the unit
will not fi t through the
36-5/8" (930mm) high frame opening.
3) Put a bead of silicone inside the outer
section of the adapter and a bead of Stove
Mate on the inner collar. Slip the adapter
over the existing inner and outer fl ue collar
and fasten to the outer collar only with the
3 supplied screws (drilling pilot holes will
make this easier). Level the fi replace 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 indentations,
located on the female ends of pipes and
fi ttings, are designed to slide straight
onto the male ends of adjacent pipes
and fi ttings, 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 fi ttings. They may be
located by examining the inside of the
female ends.
Diagram 1
Note: For best results and optimum
performance with each approved
venting system, it is highly
recommended to apply “Mill-Pac”
sealant (supplied) to every inner
pipe connection. Failure to do so
may result in drafting or performance
issues not covered under warranty.
Silicone (red RTV) is optional.
b) Horizontal runs of vent must be
supported every 3 feet (0.9meter). Wall
straps are available for this purpose.
5) Mark the wall for a 11" x 11" (279mm x
279mm) square hole. The center of the
square hole should line up with the center-
line of the horizontal pipe. Cut and frame the
11 inch (279mm) 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 8" (203mm) diameter
hole is acceptable.
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 fi re.
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
diagram in "Exterior Vent Termination
Locations" section.