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IMPORTANT FACTS
Your new gas furnace may have been installed in 1 of 2 ways, as a direct-vent application or as a non-direct vent application.
In a direct-vent application, your furnace uses air from outside the home for combustion and vents combustion products to the
outdoors. This type of application will have 2 pipes running from the furnace to the outdoors. (See Fig. 2.) In this application, both
pipes must terminate outside the structure and must not be obstructed in any way.
In a non-direct vent application, your furnace uses air from adjacent to the furnace for combustion and vents combustion products
to the outdoors. This type of application will have only 1 pipe running from the furnace to the outdoors. (See Fig. 3.) The other pipe
will terminate in the same space as the furnace and is the source of combustion air for your furnace. Therefore, the furnace must not
be enclosed in an airtight room or be sealed behind solid doors. It must have adequate airflow for efficient combustion and safe
ventilation. Do not obstruct the combustion-air pipe in any way. The vent pipe must terminate outside the structure and must not be
obstructed in any way.
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To minimize the possibility of serious personal injury, fire, damage to your furnace, or improper operation,
carefully follow these
safety rules
which apply to both direct-vent and non-direct vent applications:
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• Keep the area around your furnace free of combustible materials, gasoline, and other flammable liquids and vapors.
• Do not cover the furnace, store trash or debris near it, or in any way block the flow of fresh air to the unit.
• A furnace installed in an attic or other insulated space must be kept free and clear of insulating material. Examine the furnace area
when installing the furnace or adding more insulation. Some insulation materials may be combustible.
NOTE:
Do not use this furnace if any part has been under water. Immediately call a qualified service technician to inspect the furnace
and to replace any part of the control system and any gas control which has been under water.
NOTE:
The qualified installer or agency must use only factory-authorized replacement parts, kits, and accessories when modifying
or repairing this product.
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