SB38 / SB44 Series Woodburning Fireplace
87D0057
7
outSide combuStioN air precautioNS & recommeNdatioNS
o u t S i d e c o m b u S t i o N a i r
recommeNdatioNS
(continued)
1. Extremely long runs and numerous turns in the duct
leading from the fireplace to the combustion air
assembly should be avoided. These conditions will
increase the resistance to the free flow of air through the
duct. Refer to
Figures 3, 4, 31 and 32
for methods of
installing the outside air for combustion assemblies.
. The combustion air assembly should be located at an
exterior location, which is not likely to be accidentally
blocked in any manner. The assembly should be located
above the snow line to prevent blockage by snow
accumulation.
&0
!+INSTALL
Figure 32
Screw
Nail
Holes
Screws
AK4 Inlet Air Vent
Duct
Extending
3” min.
6” Diameter Hole
combustion air assembly
FP1904
Outside Air Control Lever
(Lift to Open Pull Down
to Close)
FP4
1
2
3
2“
App.
FP1906
Duct connector
8/08
Loop Disengaged
Clamp Around
Duct
Slip Band
Through
Housing
Snap Screw
Down and
Tighten
FP1906
installation of the duct connector
1. Push the insulation back approximately ” from the end of each
duct.
. Slip each duct over the duct connector until an equal length of the
connector extends into each duct.
3. Place a duct clamp over the end of each duct and tighten down
snugly.
4. Push the insulation back into place and over the duct clamp.
FP1907
Duct connector
8/08
Approximately
2”
Insulation
Duct
Duct Clamp
Duct Connector
FP1907
FP2242
outside air lever
3. The combustion air inlet assembly should never be
mounted in a garage or storage area where combustible
fumes such as gasoline might be drawn into the
fireplace.
4. Combustion air can be drawn form the crawl space
under a house when an adequate supply of air is
provided by open ventilation.
5. Do not take combustion air from attic space or garage
space.