Outside Air Kit - Heatilator BIR50-B Installation Manual

G. Outside Air Kit
Outside air kits must be used for combustion. Hearth &
Home Technologies recommends you utilize the shortest
duct run to optimize the performance of the outside air kit.
The outside air kit inlets should be positioned in a manner
that will not allow snow, leaves, etc. to block the inlet. In
some installations the air duct may need to be run verti-
cally. In such an installation, a 3 ft (914 mm) height differ-
ence must be maintained from the top of the uppermost
chimney section to the outside combustion air inlet.
Refer to Figures 3.8 and 3.9 when placing the outside air
inlet.
The outside air kits are installed on the both sides of the
fi replace.
• Cut a 6 in. (152 mm) hole in outside wall to accommodate
air piping.
• Use 6 in. (152 mm) metal fl ex or rigid piping (not supplied)
to directly connect outside air to fi replace intake. Insulate
the pipe to prevent frost condensation.
• Use the supplied termination cap.
• Seal between the wall and the pipe with silicone to
prevent moisture penetration and air leaks.
• Seal between the termination cap and the house with
silicone to prevent air infi ltration.
CAUTION! Risk of Fire or Asphyxiation! DO NOT draw
outside combustion air from wall, fl oor or ceiling cavity, or
enclosed spaces such as an attic or garage.
• DO NOT place outside air hood close to exhaust vents or
chimneys. Fumes or odor could be drawn into the room
through the fi replace.
• Locate outside air inlet to prevent blockage from leaves,
snow/ice, or other debris. Blockages could cause
combustion air starvation.
CAUTION! Risk of Cuts/Abrasions.
gloves and safety glasses during installation. Sheet metal
edges are sharp.
14 Heatilator • Birmingham BIR50-B Installation Manual • 4059-701 • Rev B • 2/6/13
Wear protective
3 ft min. from
top of uppermost
chimney section
to air inlet.
Figure 3.8 Outside Air Inlet Locations
NO
Attic space
NO
Outlet placed
higher than 3 ft
below the
termination cap
Figure 3.9 Outside Air Installation
►
Outside air
stalled on both
sides (right side
not shown)
Outside air installed
on both sides (right
side not shown)
NO
Garage or
combustible
NO
liquids storage
Outlet blocked by
snow, leaves, etc.
Use only duct materials
specified by manufacturer
in-