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INSTALLATION
HORIZONTAL
INSTALLATIONS
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.
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.
3) Put a bead of silicone inside the outer section
of the adapter and a bead of Mill Pac 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 fram-
ing 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
20
Vertical Venting with Three (3) 90
Option
With the above options, maximum total pipe length if 37 feet with mini-
mum of 5 feet total vertical and maximum 12 feet total horizontal.
Please note minimum 1 foot between 90
Diagram 12
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.
Note: Apply sealant "Mill-Pac" to inner pipe
and high temperature silicone seal-
Diagram 1
ant to outer pipe on every twist-lock
joint.
b) Horizontal runs of vent must be sup-
ported 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 fl ex) hole is
acceptable.
Note: With Dura-Vent, the minimum height
is achieved by installing a 45
to the rigid pipe adaptor.
Note:
a) The horizontal run of vent must be level,
or have a 1/4 inch rise for every 1 foot
Regency P121-1/P121LC-1/P121RC-1/P131-1 Zero Clearance Direct Vent Gas Fireplace
o
Elbows
V + V1
A)
2' (610mm) Minimum
B)
3' (914mm) Minimum
C)
4' (1.22m) Minimum
D)
5' (1.5m) Minimum
b) The location of the horizontal vent termi-
6) The arrow on the vent cap should be
pointing up. Insure that the 1-1/2" clear-
ances to combustible materials are main-
tained (Diagram 3 on page 16). Install the
termination cap.
The four wood screws provided should
be replaced with appropriate fasteners for
stucco, brick, concrete, or other types of
sidings.
o
elbow directly
Note: If installing termination on a siding
H + H1
3' (914mm) Maximum
6' (1.86m) Maximum
9' (2.7m) Maximum
12' (3.6m) Maximum
o
elbows is required.
Diagram 2
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.
nation 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 on page 12.
covered wall, a vinyl siding standoff
or furring strips must be used to
ensure that the termination is not
recessed into the siding.
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