4SAFETY CONSIDERATIONSRecognize safety information. This is the safety--alert symbol. When you see this symbol on the furnace and in instructionsor manuals, be alert to the potential for personal injury.Understand the signal words: DANGER, WARNING, andCAUTION. DANGER identifies the most serious hazards whichwill result in severe personal injury or death. WARNING signifieshazards which could result in personal injury or death.CAUTION is used to identify unsafe practices which may resultin minor personal injury or product and property damage. NOTEis used to highlight suggestions which will result in enhancedinstallation, reliability or operation.To minimize the possibility of serious personal injury, fire,furnace damage, or improper operation; carefully follow thesesafety rules:S Your gas furnace uses air from outside the home forcombustion and vents flue gas to the outdoors. It is notto be installed using indoor air for combustion. Thevent pipe must terminate outside the structure and mustnot be obstructed in any way. The air--intake pipe mustterminate outside the structure or in a well ventilatedarea that is isolated from the living space and the garage(e.g. well ventilated attic or crawlspace). Do not blockor obstruct air openings on furnace or spaces aroundfurnace.A08617Fig. 3 -- VentingS Keep the area around your furnace clear and free ofcombustible materials, gasoline, and other flammableliquids and vapors.A92182Fig. 4 -- Combustible MaterialsS Do not cover the furnace, store trash or debris near it, orin any way block the flow of fresh air to the unit.S A furnace installed in an attic or other insulated spacemust be kept free and clear of insulating material.Examine the furnace area when the furnace is installedor when insulation is added. Some materials may becombustible.S This furnace contains SAFETY DEVICES which mustbe MANUALLY RESET. If the furnace is leftunattended for an extended period of time, have itchecked periodically for proper operation. Thisprecaution will prevent problems associated with noheat, such as frozen water pipes, etc. See “Before YouRequest a Service Call” section in this manual.FIRE OR EXPLOSION HAZARDFailure to follow this warning could result in personalinjury/death or property damage.Do not keep combustible materials, gasoline, and otherflammable liquids or vapors around your furnace.! WARNINGFIRE AND UNIT OPERATION HAZARDFailure to follow this warning could result in personalinjury/death or property damage.For proper and safe operation the furnace needs air forcombustion and ventilation. Do not block or obstruct theopenings on the furnace, air openings to the area in which thefurnace is installed, and the space around the furnace.! WARNING