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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 11-in wide by 11-in
high. The minimum combustible clearance from the horizontal
vent is 2-in from sides and bottom, and 6-in above the vent
pipe.
See Figure 66.
VENT PIPE
2” MINIMUM CLEARANCE AROUND VENT PIPE
Figure 66
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.
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.
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.
DVVK-4F FLEX VENT INSTRUCTIONS
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 67.
Top of
Vent
3” (75mm)
2” (50mm)
2” (50mm)
7” Diameter
intake vent
4” Diameter flue
Combustibles NOT
allowed in shaded
area
Figure 67
11. Attach the Outer Vent pipe to the 7-in diameter 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.
