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For models purchased after 4/16/15, please see addendum.
VENTING INSTALLATION
Finish Wall
Figure 18 -
Side View of Final Unit Location
REAR WALL VENT INSTALLATIONS -
FLEX VENT PIPE
Follow Steps 1 and 2 on Page 16.
Step 3
Install the 4" (102 mm) flex vent pipe to the appliance col-
lars described in "General Information Assembling Vent
Pipes", Page 13. If the installation requires a 45° angle,
grasp the vent pipe close to the appliance collar and bend
to 45°. DO NOT exceed 45°. Figure 19
Install the 7" vent pipe in the same manner as Step 2.
NOTE: There must be a 1/2" (13 mm) rise in a 12"
mm) length of flex vent.
Step 4
Assemble the flex vent to the collars on the termination as
you did on the appliance.
Termination
Flex Section
Appliance Collars
Figure 19 -
Grasp the vent pipe close to the collar and
bend to 45° angle. do not exceed 45°.
20306740
FP1473
corner flex install
Vent
Termination
FP2294
FP2294
Side View Vent Termination
1/25/00 djt
(305
FP1473
DVB Series Direct Vent Gas Fireplace
Figure 20 -
There must be a 1/2" rise per foot length
TOP VENT SIDEWALL APPLICATION
NOTE: For all top vent installations where a 90° elbow
is the first pipe piece towards a sidewall termination (up
and out), an open-center ringed flue restrictor must be
installed onto the top edge of the firebox flue adapter. To
create this open-center restrictor, twist and break off the
center rib of the supplied flue restrictor. The installed part
should appear similar to that show n in Figure 21.
Since it is very important
that the venting system
maintain its balance be-
tween the combustion air
intake and the flue gas ex-
haust, certain limitations
as to vent configu-
rations apply and
Figure 21 -
must be strictly ad-
Top Vent Vertical Sidewall
hered to.
Restrictor
The
Vent
Graph,
showing the relationship between vertical and horizontal
side wall venting, will help to determine the various di-
mensions allowable.
Minimum clearance between vent pipes and combus-
tible materials is 3" (76 mm) on top, and 1" (25 mm) on
the bottom and sides unless otherwise noted.
When vent termination exits through foundations less
than 20" (508 mm) below siding outcrop, the vent pipe
must flush up with the siding.
It is best to locate the fireplace in such a way that mini-
mizes the number of offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent
pipe from the flue collar of the fireplace (or the top of the
Transition Elbow) to the face of the outer wall.
Horizontal plane means no vertical rise exists on this por-
tion of the vent assembly.
Rise
FP1472
FP1472
rise in length
4/04 djt
FP2303
FP2303
CDV7 rear restrictor
3/09
17
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