DFS Series Vent Free Fireplace
71D0532 33
The use of outside air for combustion is optional unless required by building codes. It is only neces-
sary to supply outside combustion air to one side of the replace. Use the model AK4 combustion
air kit.
1. Remove the cover plate from the 4" outlet opening location on the left or
right outside of the replace.
2. Place the insulation ring between the AK-4 starting collar and fire-
place wall.
3. Place the starting collar (4") into the hole on the side of replace. Fasten it
in place with the four sheet metal screws provided. Figures 37 and 38
The air starting collar extends through the replace outer wrap. When the air starting collar
is securely attached, it will form a seal against the replace wall.
4. Attach outside duct to starting collar with duct clamp or screws. Figure 39
FP1900
OA start collar
8/08
Left Side of
Fireplace
Insulation Ring
Sheet Metal
Screws
AK-4 Starting
Collar
Shorter End
of Air Starting
Collar
FP1900
FP1901
secure outside duct
8/08
Air Starting
Collar
Duct
Screws
Left Side of
Fireplace
FP1901
5. Cut a 6-inch diameter opening for model AK-4 in the
outside wall covering where the outside vent is to be
located. Figure 39
6. Select and cut a piece of duct long enough to attach to
the replace and stick out at least 3" beyond the face of
the wall to which the AK-4 inlet air vent will be attached.
Figure 38
6” Diameter
Hole
Screw
Duct
Extending
3” Min.
AK-4 Inlet
Air Vent
Nail
Holes
Screws
FP1904
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