—3—
DOWNFLOW/HORIZONTAL FURNACE COMPONENTS
Manual-Reset Auxiliary Limit Switch (When Used)
Blower and Blower Motor
Relief Box
Gas Valve Control Knob or Electric Switch (On/Off)
Gas Valve
Gas Burner
Rating Plate
Control with LED Light
Blower Door Safety Switch
Draft Safeguard Tube and Switch
Gas Manifold
Manual Reset Limit Switch (2)
Hot Surface Ignitor
Flame Sensor
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1
2
3
4
5
6
7
8
9
10
11
12
13
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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 possibility 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.
5
•
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 fluorine. 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 these compounds are burned in your furnace, the heat exchangers and metal vent system may deteriorate.
•
A furnace installed in the attic or other insulated space must be kept free and clear of the insulating material. Examine the furnace area when
installing the furnace or adding more insulation. Some 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.
This furnace contains safety devices which must be manually reset. If the furnace is left unattended for an extended period of time, have it
checked periodically for proper operation. 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.
C
OM
24V
HUM
G
R
Y
W
12
11
9
8
10
13
14
7
6
5
4
3
2
1
