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87D0174
19
SSTB11 Woodburning Fireplace
OUTSIDE COMBUSTION AIR PRECAUTIONS & RECOMMENDATIONS
NOTE: The use of outside air for combustion is optional unless required by building codes. It is
only necessary to supply outside combustion air to one side of the replace. Use the Model AK4
combustion air kit.
FP1900
OA start collar
8/08
Insulation Ring
Insert Shortest Side of the
Tube through the Fireplace
Outer Wrap to Properly
Seal Against Firebox Wall
and Gasket
Longer Length of the Tube
to Outside
Secure Outside Air Starting Collar to Fireplace
Figure 23
Step 1: Secure outside air starting collar to left side of re-
place with four (4) sheet metal screws provided.
NOTE: The starting collar extends through the outer replace
jacket and will seal against the rebox wall when secured as
indicated.
FP1901
secure outside duct
8/08
Step 2: Secure outside duct to starting
collar with duct clamp or screws.
Fireplace Outer Wrap
AK4 Combustion Air
Kit (Shortest Toward
Firebox)
AK4 Mounting Plate
Firebox Insulation Seal
FP1900
FP1901
&0
ABOVEBASEMENT
Second Floor
Firestop Spacer
Duct Extended
to Miss Joint
To Outside Wall
Installation Above Basement
or Crawl Space
FP186
Figure 24
8‘ Max.
FP2187
OA soffit install
1/09
Firestop
Spacer
CAUTION: Do not take
combustion air from at-
tic space or garage.
Concrete Slab Installation
(Optional Outside Air Runs)
Inlet Grille in
Soft
(Overhang)
Termination Cap
Figure 25
FP187
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