Vertical Side Wall Installation-Flex Vent Pipe - Vermont Castings 33CFDV(N/P)(V/I)SB Installation And Operating Instructions Manual

CFDV Series Gas Fireplace
Vent Opening for Combustible Walls
9 5 ⁄ "
8
(244 mm)
9 5 ⁄ "
8
(244 mm)
Fireplace Hearth
Opening for Noncombustible Wall
7 1 ⁄ "
2
(190 mm)
Fireplace Hearth
Figure 36 –
Locate Vent Opening on Wall
X
Figure 37 –
Vertical Height Requirements
Step 5
Measure the horizontal length requirement including a 2"
(51 mm) overlap, i.e. from the elbow to the outside wall
face plus 2" (51 mm) (or the distance required if installing
a second 90° elbow). Figure 38
Always install horizontal venting on a level
plane.
Step 6
Use appropriate length of pipe sections – telescopic or
fi xed – and install. The sections which go through the wall
are packaged with the starter kit, and can be cut to suit if
necessary.
Step 7
Guide the vent terminations 4" and 7" collard into their
respective vent pipes. Double check that the vent pipes
overlap the collars by 2" (51 mm). Secure the termina-
22
Framing Detail
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X
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Figure 38 –
Horizontal Length Requirement
tion to the wall with screws provided and caulk around the
wall plate to weatherproof. As an alternative to screwing
the termination directly to the wall, you may also use ex-
panding plugs or an approved exterior construction ad-
hesive. You may also attach the termination with screws
through the inner body into the 4" vent pipe, however for
this method, you must extend the 4" pipe approximately
6" (152 mm) beyond the outer face of the wall.
Support horizontal pipes every 36" (914
mm) with metal pipe straps.
VERTICAL SIDE WALL INSTALLATION –
FLEX VENT PIPE
NOTE: For all top vent vertical through-the-roof installa-
tions, install the supplied fl ue restrictors onto the top edge
of the fi rebox fl ue adapter according to the Vertical Side
wall Installation Flue Restrictor Chart on Page 21.
NOTE: The 40" (1016 mm) fl ex vent is used for 90° off the
top of the unit then out the back wall.
Follow Step 1 and 2 on Page 21.
Step 3
Install the four (4) spacer springs on the 4" fl ex vent
pipe. When installing the spacer springs around the 4"
pipe, stretch the spring to approximately 15" (381 mm),
wrap the spring around the pipe and interlock the ends
of the spacer spring approximately 2" (51 mm). Measure
6 3 ⁄ "(172 mm) from the end of the pipe. Place the next
4
spring 5" (127 mm) from the previously installed spring.
Place the next spring 6" (152 mm) from the last spring.
Finally place the last spring 12" (305 mm) from the last
spring installed. Figure 39
VENTING INSTALLATION
X
X
20306739
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