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21759-6-0608Page 32
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" and 12" intervals along its length. See Figure 50. If not,
stretch the spacer springs to about 15" long and wrap them around
the flue, then interlock the ends of each spring about 2". See Figure
51. Maintain equal distance between spring spacers.
Figure 50
Figure 51
3. Remove the 6-⅝" dia. Vent collar from the fireplace. Replace this
collar with the 7" dia. Flex Vent adapter collar provided with the
vent kit.
4. Slide the Flex Vent flue pipe into the Outer Flex 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 9" wide by 11" high. The minimum combustible
clearance from the horizontal vent is 1" from sides and bottom, and
3" above the vent pipe. See Figure 53.
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.
9. Prior to making the vent connections, apply high temperature
sealant (1000 degree F min.) to the vent connections before securing
with the band clamps provided. Note: the flue pipe end without the
adapter is to be installed to the Termination Cap.
10. Apply sealant to the outside of the flue pipe adapter and connect
to the flex flue pipe. Then insert the adapter into the fireplace flue.
Secure flue adapter to the fireplace flue with a minimum of two
screws provided. See Figure 52.
11. Attach the Outer Vent pipe to the 7" dia. Collar on the fireplace with a
large band clamp provided. Sealant may also be used on the outer vent
connections.
12. Check all vent connections for tightness. Make sure horizontal
venting has the proper rise and combustible clearances required.
Refer to venting charts in fireplace instruction manual.
Figure 52
Figure 53
Flex venting can be installed either vertically or horizontally off of the DVP36 Series fireplaces. When installing a horizontal vent run from
top connections, maintain at least ½" rise for every 12" of vent run. When venting horizontal off the rear vent connections, allow a minimum
rise of 2". Refer to Figure 68 when mounting termination near vinyl siding.
CAUTION: Always stretch and secure venting with wire or metal strapping to ensure that the horizontal runs do not sag.
If space permits, it is generally easier to attach venting in the top vent configuration.
Because of sharp edges, always use gloves when handling the flex vent components.
Vent connections should overlap a minimum of 1" for proper sealing.
Always follow the general venting requirements for vent terminal location, vent lengths, and clearance to combustible materials.
The DVVK-4F FLEX VENT KIT includes the following components:
• (1) Horizontal Termination Cap
• (1) 4-foot section of Flex vent with spacers (4" flue/7" outer
pipe)
• (1) 4" dia. Flue adapter collar
• (1) 7" dia. Outer Vent adapter collar
• (1) Wall Firestop/Thimble Assembly
• Hardware pack that includes band clamps and screws
DVVK-4F FLEX VENT INSTRUCTIONS - TOP VENT ONLY