14
VCG Royalton Series • BE36/42 • 4044-197 Installation Manual • Rev A • 02/18/15
G. Outside Air Kit (optional)
If you install an outside air kit, Vermont Castings Group
recommends you utilize the shortest duct run to optimize
the performance of the outside air kit. The outside air inlet
hood 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 vertically. In such an in
-
stallation, a 3 ft (914 mm) height difference must be main
-
tained from the top of the uppermost chimney section to
the outside air inlet hood.
Refer to Figures 3.8 and 3.9 when placing the outside air
inlet hood.
The outside air kit is installed on the left hand side of the
fireplace.
• Cut a 4-1/2 in. (114 mm) hole in outside wall to
accommodate air piping.
• Use 4 in. (102 mm) flex (not supplied) to directly connect
outside air to fireplace intake. Insulate the pipe to prevent
frost condensation.
• Seal between the wall and the pipe with silicone to
prevent moisture penetration and air leaks.
• Seal between the outside air inlet hood and the house
with silicone to prevent air infiltration.
CAUTION! Risk of Cuts/Abrasions.
Wear protective
gloves and safety glasses during installation. 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 inlet hood close to exhaust
vents or chimneys. Fumes or odor could be drawn into
the room through the fireplace.
• Locate outside air inlet hood to prevent blockage from
leaves, snow/ice, or other debris. Blockages could cause
combustion air starvation.
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3 ft min. from
top of uppermost
chimney section
to air inlet.
Note:
Chimney air kit is
not shown, but is required
in Canada.
Figure 3.8 Outside Air Inlet Locations
Outlet placed
higher than 3 ft
below the
termination cap
Attic space
Garage or
combustible
liquids storage
Outlet blocked by
snow, leaves, etc.
Clear area
outside
house or in
ventilated
crawl space
YES
NO
NO
NO
NO
Factory-built
fireplace
• Use UL181 Class 0 or Class 1 rigid or flexible ducting.
• Install with short run or mainly straight duct, except small
dip for cold air trap which will help prevent flow of cold air.
• Secure flex duct with screws or wire ties.
Figure 3.9 Outside Air Installation