Hearth and Home Technologies ST42A Installation of Fireplace, Install the Outside Air Kit

4Installation of Fireplace

CAUTION			WARNING
Sharp Edges			Fire Risk
			Asphyxiation Risk
• Wear protective gloves and safety glasses
			Do not draw outside combustion air from:
during installation.
			• Wall, fl oor or ceiling cavity.
			• Enclosed space such as an attic or
			garage.
A. Install the Outside Air Kit			• Close proximity to exhaust vents or
			chimneys.
The outside air kit is supplied as an optional feature with this
			Fumes or odor may result.
fi replace and its use is highly recommended to minimize the
effects of negative pressure within the structure. We recom-
mend you utilize the shortest duct run to optimize the perfor-			CAUTION
mance of the outside air kit. The outside air kit inlet should
be positioned at least 4 ft (1.22 m) above the ground level, in		Risk of Smoke Spillage
a manner that will not allow snow, leaves, etc. to block the in-		Outside air inlet must be located to prevent blockage
let. See Figure 4.1 for proper placement of outside air inlet.
		from:
The outside air kit is installed on either side of the fi replace.		•	Leaves
See Figure 4.2 for handle location/operation.		•	Snow/ice
		•	Other debris
		Blockage may cause combustion air starvation.
NO	NO
	Garage or		NO
Outlet blocked by	combustible
snow, leaves, etc.	liquids storage		Attic space
			NO
			Outlet placed
			higher than 3 ft
			below the
			termination cap
YES		Factory-built
Clear area		fireplace
outside
house or in
ventilated
crawl space	Use only duct materials specified
	by manufacturer (preferably with
	short run or mainly straight duct,
	except small dip for cold air trap
	which will help prevent flow of cold air.)
Figure 4.1 Outside Combustion Air Placement

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Figure 4.2 Locating the Outside Air Control

Heatilator • ST42A • 35038 Rev G • 02/05 13