Bryant Essential Product Data and Parts for Furnace Models 373LAV, 376CAV, and 383KAV

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DOWNFLOW/HORIZONTAL FURNACE COMPONENTS

1Manual-Reset Auxiliary Limit Switch (When Used)

2Blower and Blower Motor

3Relief Box

4Gas Valve Control Knob or Electric Switch (On/Off)

5Gas Valve

6Gas Burner

7Rating Plate

8Blower Door Safety Switch

9Blocked Vent Safeguard Tube and Switch

10Gas Manifold

11Manual Reset Limit Switch (2)

12Hot Surface Ignitor

13Flame Sensor

IMPORTANT FACTS

Your furnace must have adequate air- flow 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.

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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 un- contaminated. If these compounds are burned in your furnace, the heat ex- changers 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 install- ing the furnace or adding more insula- tion. 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 in- spect 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 re-placement parts, kits, and accessories when modifying or repairing this product.

This furnace contains safety devices which must be manually reset. If the fur-

nace is left unattended for an extended period of time, have it checked periodi- cally for proper operation. This precau- tion 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 clean- ing and replacing air filters. All other operations must be performed by trained service personnel. Observe safety precautions in this manual, on tags, and on labels attached to the fur- nace and other safety precautions that may apply.

Recognize safety information: This is the safety-alert symbol ! . When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words—DAN- GER, WARNING, and CAUTION. These words are used with the

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