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INSTALLATION
NOTE: For Snorkel terminations in ABOVE
grade installations, follow national
or local code requirements.
Below Grade Snorkel Installation
If the Snorkel Termination must be installed
below grade, i.e. basement application,
proper drainage must be provided to pre-
vent water from entering the Snorkel Ter-
mination. Refer to Dura-Vent Installation
instructions for details.. Do not attempt to
enclose the Snorkel within the wall, or any
other type of enclosure.
4) Install wall penetration heat shield in the
center of the 9-1/2" round hole and attach
with wood screws. The four wood screws
provided should be replaced with appropri-
ate fasteners for stucco, brick, concrete,
or other types of sidings. Dia. 3.
5) 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. Dia. 3.
6) Take the Riser Vent terminal and separate
the Backing Plate from the Riser Vent Front
by removing 8 screws as shown in dia-
gram 4.
Diagram 3
Diagram 4
22
7) Install the Backing Plate into the wall pene-
tration heat shield and attach using 4
screws. Dia. 4.
8) Connect all pipe sections to unit and install
into wall:
a) Measure pipe length required and cut to
length. Hint: use the cut end of the 6-5/8" dia.
outer pipe at the vent terminal end.
b) Push the pipe sections completely together,
the minimum pipe overlap is 1-1/4". Secure
all outer pipe joints by using at least two
screws. Locate the screws at the bottom
of the pipe so that the screw heads are
hidden on the final installation. Apply seal-
ant "Mill-Pac" to inner pipe and high temp
silicone sealant or "Mill-Pac" to outer pipe on
every joint.
Hint: Apply seal-
ant to female
end.
c) Before connecting the vent pipe to the vent
termination, slide the black decorative wall
thimble cover over the vent pipe, then slide
the Wall Penetration Heat Shield (Part #
946-202) over the vent pipe. Dia. 3.
d) Slide the appliance and vent assembly
towards the wall carefully inserting the
vent pipe into the riser vent terminal assem-
bly. It is important that the vent pipe extends
into the Riser Vent Backing Plate a suffi-
cient distance so as to result in a minimum
pipe overlap of 1-1/4 inches. Secure the
connection between the vent pipe and the
vent cap by attaching the two sheet metal
strips extending from the Riser Vent Back-
ing Plate into the outer wall of the vent pipe.
Use two aluminum screws provided to
connect the strips to the pipe section. Bend
any remaining portion of the sheet metal
strip back towards the vent cap and cut off
any excess, it will be concealed by the
decorative wall thimble cover. See diagram
5.
Diagram 5
8) Slide the decorative wall thimble up to the
wall surface being careful not to scratch
the paint. See diagram 5.
9) Back outside: Apply sealant to the 4" inner
flue and slide the Riser Vent Front into the
Backing Plate and fasten with 8 screws.
IMPORTANT:
When connecting the pipe to the Riser
Vent, apply Mill-Pac to the inner pipe
on the Riser Vent Terminal, around
the bead. Ensure that the vent pipe is
pushed past the bead for a secure fit.
10) Seal around the outer edge of the Riser
Vent Backing Plate.
DURA-VENT VERTICAL
TERMINATION
1) Maintain the 1-1/4" clearances (air spaces)
to combustibles when passing through
ceilings, walls, roofs, enclo-
sures, attic rafter, or other
nearby combustible surfac-
es. Do not pack air spaces
with insulation. Check page
10 for the maximum vertical
rise of the venting system and
the maximum horizontal offset
limitations.
2) Set the gas appliance in its
desired location. Drop a
plumb bob down from the ceil-
ing to the position of the appli-
ance flue exit, and mark the
location where the vent will
penetrate the ceiling. Drill a
small hole at his point. Next,
drop a plumb bob from the roof
to the hole previously
drilled in the ceiling, and
mark the spot where the
vent will penetrate the
roof. Determine if ceiling
joists, roof rafters or oth-
er framing will obstruct
Hampton H25 Direct Vent Freestanding Gas Stove
Diagram 7
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