Bryant 393AAV instruction manual Service and, Maintenance Procedures, Series B&C

Service and	393AAV
Maintenance Procedures	Series B&C

GAS-FIRED

INDUCED-COMBUSTION FURNACE

NOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTS
SAFETY CONSIDERATIONS	1
INTRODUCTION	2
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PRO-
CEDURE	2
CARE AND MAINTENANCE	2
Cleaning and/or Replacing Air Filter	2
Blower Motor and Wheel	3
Cleaning Heat Exchanger	4
Electrical Controls and Wiring	5
WIRING DIAGRAMS	9
Troubleshooting	9
SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified person- nel 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 performed by trained service personnel. When working on

Cancels: SP04-58	SP04-61
	10-00

A94085

Fig. 1ÐModel 393AAV Upflow Furnace

EFFICIENCY

RATING

CERTIFIED

heating equipment, observe precautions in the literature, tags, and labels attached to or shipped with the unit and other safety precautions that may apply.

Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) NFPA No. 54-1999/ANSI Z223.1-1999 and the Installation Standards Warm Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. In Canada, refer to the current edition of the National Standard of Canada CAN/CGA-B149.1- and .2-M95 Natural Gas and Propane Gas Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have fire extinguisher available during start-up and adjustment procedures and service calls.

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REGISTERED QUALITY SYSTEM

CERTIFIED

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 these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation

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WARNING: The ability to properly perform mainte- nance on this equipment requires certain expertise, me- chanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recom- mended in the User's Manual. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS PER- SONAL INJURY, OR DEATH.