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Twist-lock Procedure: The female ends of the pipes and
fittings have four locking lugs (indentations). These lugs will
slide straight into matching slots on the male ends of the
adjacent pipes and fittings. (All connections must be sealed
with high temperature silicone sealant as specified in the
warning statement on page 7.). Push the pipe sections together
and twist one section clockwise approximately one-quarter
turn until the sections are fully locked (See figure 18).
NOTE: Horizontal runs of vent must be supported every three
feet. Use wall strap for this purpose.
Flexible vent pipe must be installed with spacer springs every
12" and especially near each bend (See figure 19).
Make the 5" inner pipe connection to the unit with the clamp
provided. Install the spacer springs by looping them around
the 5" pipe and connecting at both ends. Slide the 8" outer
pipe over the springs and inner section and continue adding
sections in this manner. All connections need a minimum of 1
1/4" (32mm) overlap, must be clamped tightly and sealed with
high temperature silicone sealant as specified in the warning
statement on page 7.
3. Attach the vent pipe assembly to the fireplace using twist-
lock connections for rigid pipe or clamp, method for flex pipe.
See figure 20. Set fireplace in front of its permanent location
to insure minimum clearances. Mark the wall for a 10 3/4"
square hole (for non-combustible material such as masonry
block or concrete, a 8 1/2" diameter hole is acceptable). See
Figure 21. The center of the hole should line up with the
centerline of the rigid vent pipe. Cut a 10 3/4" x 10 3/4"
(273mm x 273mm) square hole through combustible exterior
wall (8 1/2" (216mm) diameter hole if non-combustible).
Frame as necessary.
4. Three types of vent caps are available for horizontal
terminations. Two square terminals are available; one for rigid
pipe applications and one for flex pipe applications. A round
vent termination with a slip fit connection is also provided for
rigid pipe applications, when a wall thickness or off spacing
must be accommodated. See figure 23 on page 10. Each may
be purchased as a kit, which includes a 45° elbow and a
firestop that accommodates a square or round termination.
RIGID VENT PIPE
FLEXIBLE VENT PIPE
MALE SLOTS
FEMALE
LOCKING
LUGS
5" FLEX
PIPE
8" FLEX
PIPE
5" CLAMP
8" CLAMP
SPACER
SPRING
Figure 18 VENT PIPE CONNECTIONS
Figure 19 FLEX PIPE INSTALLATION
Figure 20 RIGID VENT CONNECTION
Figure 21 VENT OPENING REQUIREMENTS