Bryant 333BAV instruction manual service and, maintenance procedures, 333JAV, Series B

service and	333BAV
maintenance procedures	333JAV
UPFLOW/HORIZONTAL,	Series B
VARIABLE-SPEED, 2-STAGE,
INDUCED-COMBUSTION FURNACES

NOTE: Read the entire instruction manual before performing any service or maintenance.

This symbol → indicates a change since the last issue.

These procedures are for size 60,000 through 120,000 Btuh units.

Index	Page
SAFETY CONSIDERATIONS	1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE	2
CARE AND MAINTENANCE	2-5
Air Filter Arrangement	2-3
Blower Motor and Wheel	3
Cleaning Heat Exchanger	3-5
Electrical Controls and Wiring	5
Troubleshooting	5
Application Wiring Diagrams	6
Unit Wiring Diagram	7
Service Label	8
Troubleshooting Guide	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 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 NFPA No. 54- 1996/ANSI Z223.1-1996. 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. Wear safety glasses and work gloves. Have fire extinguisher available during start-up and adjustment procedures and service calls.

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 DANGER, WARNING, and CAU- TION. These words are used with the safety-alert symbol. DAN- GER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard 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.

Cancels: SP04-43	SP04-50
	10-97

A95137

Fig. 1ÐModel 333BAV or 333JAV Horizontal

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CANADIAN GAS ASSOCIATION

A P P R O V E D

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Fig. 2ÐModel 333BAV or

CERTIFICATION OF333JAV Upflow

MANUFACTURING SITE

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 items, do not attempt to perform any maintenance on this equipment other than those proce- dures recommended in the User's Manual. A FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE TO THIS EQUIPMENT, SERI- OUS PERSONAL INJURY, OR DEATH.

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