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Unit Installation with
Horizontal Termination
(Non Power Vent)
5" x 8" Venting
(Rigid Vent Systems)
Minimum Vent Clearances to
Combustibles
* Clearances noted below must be maintained;
except when passing through a wall, ceiling or
at the termination where the use of a firestop or
wall thimble reduces clearance to 1-1/2" (38mm).
Horizontal Top*
3" (76mm)*
Horizontal Side
2 " (51mm)
Horizontal Bottom
2" (51mm)
Vertical Vent
2" (51mm)
Below are the recommended framing dimensions
(inside measurements) for the 5" x 8" rigid vent
terminations - for use with a firestop or wall thimble.
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 required.
3. In conjunction with the Approved Vent system,
install the adaptor after the unit is set in its
desired location. Slip the adapter over the
existing inner and outer flue collar. Fasten to
the outer collar only with the 3 supplied screws
(drilling pilot holes will make this easier).
4. Level the fireplace and fasten it to the framing
using nails or screws through the top and side
nailing strips.
Diagram 3
5. Assemble the desired combination of pipe and
elbows to the appliance adaptor and twist-lock
for a solid connection.
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.
Horizontal runs of vent must be supported
every 3 feet (0.9meter). Wall straps are
available for this purpose.
6. Mark the wall for a square hole.-see chart to left
for size. The center of the square hole should
line up with the center-line of the horizontal
pipe. Cut and frame the square hole in the
exterior wall where the vent will be terminated.
See diagram 54 for center line requirements.
If the wall being penetrated is constructed of
non-combustible material, i.e. masonry block
or concrete, an 8" (203mm) diameter hole is
acceptable.
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. See
"Exterior Vent Termination Locations"
section for more details.
Diagram 4
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 5
*As specified in CSA B149.1 Installation Code. Local codes or
regulations may require different clearances.
Below Grade Snorkel 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. See diagram 56. Do not
attempt to enclose the snorkel within the wall or
any other type of enclosure.
Diagram 5
7. Ensure that the pipe clearances to combustible
materials are maintained (Diagram 55). Install
the termination cap.
Note: If installing termination on a
vinyl siding covered wall, a vinyl
siding standoff or furring strips
must be used to ensure that the
termination is not recessed into
center
the siding.
of hole
The four wood screws provided should be
replaced with appropriate fasteners for stucco,
brick, concrete, or other types of sidings.
8. Before connecting the horizontal run of vent
pipe to the vent termination, slide the Wall
Thimble over the vent pipe. The wall thimble
is required for all horizontal terminations.
9. 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
Snorkel
overlap of 1-1/4 inches (32mm). Secure the
connection between the vent pipe and the vent
cap.
10. Install wall thimble in the center of the framed
Min. 12"*
(305mm)
hole and attach with wood screws.
installation
Snorkel
Min. 12"
(305 mm)
Window
Well
Adequate
Drainage
Gravel
City Series CV50E |
55
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