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433-1390K
Page 40
Figure 7.4
Outside Air Installation
1. Cut a 6 in. (152 mm) hole in outside wall to accommodate
air piping. See Figure 7.5 on page 41.
2. Use 6 in. (152 mm) metal flex or rigid piping
(not
supplied)
to directly connect outside air to fireplace
intake. Insulate the pipe to prevent frost condensation.
3. Use the supplied termination cap.
4. Seal between the wall and the pipe with silicone to
prevent moisture penetration and air leaks.
5. Seal between the termination cap and the house with
silicone to prevent air infiltration.
NOTE:
A control knob allows you control of the outside air
inlet. Use of outside air for combustion is required to
conserve heated air within the structure and to provide
make up air to keep the fireplace venting properly.
ImpORTANT! Outside air control considerations
Turn clockwise to “OPEN” positions
Outside air knob must be in the “OPEN” position to oper-
ate fireplace properly.
May be closed when not in use to prevent cold air infiltra-
tion
CAUTION! Risk of Cuts/Abra-
sions.
Wear protective gloves
and safety glasses during instal-
lation. Sheet metal edges are
sharp.
CAUTION! Risk of Fire or Asphyxiation! DO
NOT
draw outside combustion air from wall, floor
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 fireplace.
• Locate outside air inlet to prevent blockage from
leaves, snow/ice, or other debris. Blockages could
cause combustion air starvation.
Outlet blocked by
snow, leaves, etc.
NO
Garage or
combustible
liquids storage
NO
Attic space
NO
Outlet placed
higher than 3 ft
below the
termination cap
NO
Use only duct materials
specified by manufacturer
Figure 7.3 Outside Air Inlet Locations
Attic insulation shield
must be used to keep
insulation away from
chimney.
Ceiling firestop
on floor of attic.
3 ft. (91cm) min. from top of
uppermost chimney
section to air inlet.