DOWNFLOW/HORIZONTAL FURNACE COMPONENTS
1Manual Reset Auxiliary Limit Switch
2Blower and Blower Motor
3Relief Box
4Gas Valve Control Knob or Electric Switch (On/Off)
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6Gas Burner
7Rating Plate
8Status LED Light
9Blower Door Safety Switch
10Draft Safeguard Tube and Switch
11Manual Reset Flame Rollout Switch (2)
12Gas Manifold
13Hot Surface Ignitor
14Flame Sensor
1 |
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2 | 8 |
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3 | 9 |
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10
4 |
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5 | 11 |
6 | 12 |
7 | 13 |
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| 14 |
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IMPORTANT FACTS
Your furnace must have adequate airflow for efficient combustion and safe ventilation. Do not enclose it in an airtight room or “seal’’ it behind solid doors. To minimize the possibil- ity of serious personal injury, fire, damage to your furnace, or improper operation, carefully follow these safety rules:
•Keep the area around your furnace free of combustible materials, gasoline, and other flammable liquids and vapors.
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•Do not cover the furnace, store trash or debris near it, or in any way block the flow of fresh air to the unit.
•Combustion air must be clean and uncontaminated with chlorine or fluo-
rine. These compounds are present in many products around the home, such as water softener salts, laundry bleaches, detergents, adhesives, paints, varnishes, paint strippers, waxes, and plastics.
Make sure the combustion air for your furnace does not contain any of these compounds. During remodeling be sure the combustion air is fresh and uncontaminated. If air with vapors of these compounds is burned in your furnace, the heat exchangers and metal vent system may deteriorate.
•A furnace installed in an attic or other insulated space must be kept free and clear of insulating material. Examine the furnace area when in- stalling the furnace or adding more insulation. Some materials may be combustible.
NOTE: Do not use this furnace if any part has been under water. Immedi- ately call a qualified service technician to inspect the furnace and to replace any part of the control system, electri- cal components 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 servicing this product.
This furnace contains safety devices which must be manually reset. If the furnace is left unattended for an ex- tended period of time, have it checked periodically for proper oper- ation. This precaution will prevent problems associated with no heat, such as frozen water pipes, etc. See “Before You Request a Service Call’’ section in this manual.
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due
to gas and electrical components.Only trained and qualified personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be per- formed by trained service personnel. Observe safety precautions in this manual, on tags and labels attached to the furnace, and other safety pre- cautions that may apply.
Recognize safety information. This is the
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