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P36E-11 Zero Clearance Direct Vent Gas Fireplace
installation
Diagram 3
Diagram 5
Diagram 1
Diagram 2
plumber's
tape
connected
to wall strap
Ruban de
plombier
relié à
l’attache
murale
wall
strap
Attache
murale
45
o
Elbows
Coudes de 45
o
Firestop
Spacer
Espaceur
coupe-feu
walstrp.eps
walstrpf.eps
french
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 connection. Failure
to do so may result in drafting or performance
issues not covered under warranty.
Diagram 5
Diagram 6
DURA-VENT VERTICAL
TERMINATIONS
1)
Maintain the 1-1/4" clearances
(air spaces) to combustibles when
passing through ceilings, walls,
roofs, enclosures, attic rafter, or
other nearby combustible surfaces.
Do not pack air spaces with
insulation. Check 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
ceiling to the position of
the appliance 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 other framing will
obstr uct t h e v e n t i n g system. You may
wish to relocate the appliance or to offset, as
shown in Diagram 2 to avoid cut-
ting load bearing members.
3)
A Firestop spacer
must be installed in
the floor or ceiling of
every level. To install
the Firestop spacer
in a flat ceiling or
wall, cut a 10 inch
square hole.
Frame the hole as
shown in Diagram
3 and install the
firestop.
Diagram 7
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.
7)
Before connecting the horizontal run of vent pipe
to the vent termination, slide the Wall Thimble
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 sufficient 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 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.
9)
Install wall thimble in the center of the 10" square
and attach with wood screws (Diagram 7).
4)
Assemble the desired lengths of pipe and
elbows. Ensure that all pipes and elbow con-
nections are in the fully twist-locked position
and sealed.
5)
Cut a hole in the roof centered on the small
drilled hole placed in the roof in Step 2. The hole
should be of sufficient size to meet the minimum
requirements for clearance to combustibles
of 1-1/2". Slip the flashing under the shingles
(shingles should overlap half the flashing) as
per Diagram 4.
Diagram 4: The upper half of the flashing is
installed under the roofing material and not
nailed down until the chimney is installed.
This allows for small adjustments.
6)
Continue to assemble pipe lengths.
Note: If an offset is necessary in the attic
to avoid obstructions, it is important
to support the vent pipe every 3 feet,
to avoid excessive stress on the
elbows, and possible separation.
Wall straps are available for this
purpose (Diagram 2).
Galvanized pipe is desirable above the roof line
due to its higher corrosion resistance. Continue
to add pipe sections through the flashing until
the height of the vent cap meets the minimum
height requirements specified in Diagram 5 or
local codes.
Roof Pitch
Minimum Vent Height
Feet
Meters
flat to 7/12
2
0.61
over 7/12 to 8/12
2
0.61
over 8/12 to 9/12
2
0.61
over 9/12 to 10/12
2.5
0.76
over 10/12 to 11/12
3.25
0.99
over 11/12 to 12/12
4
1.22
over 12/12 to 14/12
5
1.52
over 14/12 to 16/12
6
1.83
over 16/12 to 18/12
7
2.13
over 18/12 to 20/12
7.5
2.29
over 20/12 to 21/12
8
2.44
