35009-2-1015
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DVVK-5F FLEX VENT INSTRUCTIONS
The
DVVK-5F FLEX VENT KIT
includes the following compo-
nents:
• (1) Horizontal Termination Cap
• (1) 4-foot section of Flex vent with spacers (5” flue/8” outer
pipe) with flue adapter collar
•
(1) Wall Firestop/Thimble Assembly
•
Hardware pack that includes band clamps and screws
Maintain at least ½-inch rise for every 12 inches of vent run.
CAUTION
• Because of sharp edges, always use gloves when han-
dling the flex vent components.
• Always follow the general venting requirements for
vent terminal location, vent lengths, and clearance to
combustible materials.
• If space permits, it is generally easier to attach venting
in the top vent configuration.
• Always stretch and secure venting with wire or metal
strapping to ensure that the horizontal runs do not sag.
• Vent connections should overlap a minimum of 1” for
proper sealing.
INSTALLATION
1. Unpack vent components and check that all items are
included.
2. Check to see that the vent spacer springs are located around
the flue vent at 8” intervals along its length.
See Figures 54
& 55.
If not, stretch the spacer springs to about 15” long and
wrap them around the flue, then interlock the ends of each
spring. Maintain equal distance between spring spacers.
Figure 54
5” FLEX
VENT PIPE
SPACER
SPRING
8” FLEX
VENT PIPE
Figure 55
3. Attach a 6” piece of hard pipe to raise the connection point
above the unit.
4. Use existing 8” diameter inlet collar to attach outer vent pipe.
5. Install the Wall Firestop/Thimble assembly as required
through the wall. Refer to the venting charts in the fireplace
manual to determine the proper height and size of the vent
opening. The minimum opening should be 10” wide by 12”
high. The minimum combustible clearance from the horizontal
vent is 1” from sides and bottom, and 3” above the vent pipe.
See Figure 55.
6. In most cases, after determining the length of the vent that
is needed, it may be easier to install the flue and outer vent
pipes to the Termination Cap first, then from the outside, feed
the venting through the wall to the fireplace.
7. If the venting is to long, trim off any excess vent before
attaching the vent end connectors.
8. Attach the Termination Cap to the outside of the house.
CAUTION
Do not use force when installing the Horizontal Vent
Termination into the flex venting. Always stretch venting
out first, then cut off excessive vent material prior to sliding
the vent termination into the flue and inlet venting. Forcing
the termination cap into the flex venting will deform the flue
venting, which will restrict the exhaust gases, and cause
improper operation of the fireplace.
