Outside Air Kit - Heatilator C40 Installation Manual

H. Outside Air Kit
An outside air kit 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 inlet 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 3.10 and 3.11 when placing the outside
air inlet.
The outside air kit is installed on the right hand side of the
fi replace. See Figure 3.12 for handle location/operation.
• 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.
16
Heatilator • C40 Constitution • 480-2340 Installation Manual • Rev B 01-29-13
Wear protective
Attic insulation shield
must be used to keep
insulation away from
chimney.
Ceiling firestop
on floor of attic.
Figure 3.10 Outside Air Inlet Locations
3 ft min. from top of
uppermost chimney
section to air inlet.