26988-3-1012
Page 27
Flex venting can be installed either vertically or horizontally off of
the DVD 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".
HEAT DEFLECTOR (REQUIRED
WHEN COMBUSTIBLE
EXTERIOR WALL IS EXPOSED)
TERMINATION CAP
26 ½” MIN.
(2” VENT RISE MIN.)
NOTE: FRAMED OPENING DIMENSION
9” WIDE X 11” HIGH
WALL FIRESTOP
& THIMBLE
EXTERIOR OF STRUCTURE
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.
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
A. 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 B. Maintain equal distance between spring
spacers.
3. Remove the 6-⅝" diameter vent collar from the fireplace.
Replace this collar with the 7" diameter 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 on page 14 and 18 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 D.
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 C.
11. Attach the Outer Vent pipe to the 7" 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 the Venting Chart on Pages 14 and 18 for
Horizontal Termination of Flex Vent Termination Cap.
FLEX OUTER VENT
FLEX FLUE PIPE
SPACER
SPRINGS
BAND CLAMP
4” DIA. FLUE
ADAPTOR
COLLAR
4” DIA. FLEX
FLUE PIPE
7” DIA. FLEX
VENT PIPE
APPLY HIGH
TEMPERATURE
SEALANT
7” DIA. INLET
ADAPTOR COLLAR
(WITH GASKET)
Top of Vent
Combustibles NOT
allowed in shaded
area
1"
1"
3"
(25 mm)
7” Diameter
intake vent
4” Diameter flue
(25 mm)
(76 mm)
Figure A
Figure C
Horizontal Vent Clearances
8”
(203 mm)
8”
(203 mm)
8”
(203 mm)
4” FLEX
VENT PIPE
SPACER
SPRING
Figure D
Figure B
