Bryant 350MAV user manual Table Of Contents, Safety Considerations, service and, Series G

service and	350MAV
maintenance procedures	Series G

4-WAY MULTIPOISE FIXED-CAPACITY DIRECT-VENT CONDENSING GAS FURNACE

WARNING: ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD

Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death, or property damage.

Improper servicing could result in dangerous operation, serious indury, death, or property damage.

Before servicing, disconnect all electrical power to fur- nace.

When servicing controls, label all wires prior to discon- necting. Reconnect wires correctly.

Verify proper operation after servicing.

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.

WARNING: Never store anything on, near, or in contact with the furnace, such as:

1.Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools.

2.Soap powders, bleaches, waxes or other cleaning

compounds, plastic or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry cleaning fluids, or other volatile fluids.

3.Paint thinners and other painting compounds, paper bags, or other paper products.

Failure to follow this warning can cause corrosion of the heat exchanger, fire, personal injury, or death.

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

This symbol → indicates a change since the last issue.

TABLE OF CONTENTS
SAFETY CONSIDERATIONS	1
GENERAL	2
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS	2
CARE AND MAINTENANCE	2
Cleaning and/or Replacing Air Filter	3
Blower Motor and Wheel Maintenance	3
Cleaning Burners	4
Cleaning Heat Exchangers	5
Primary Heat Exchangers	5
Secondary Heat Exchangers	6

—1—

Cancels: SP05-47	SP05-52
	8-02

	A93040
Flushing Collector Box and Drainage
System	6
Servicing Hot Surface Ignitor	7
Electrical Controls and Wiring	8
Checking Heat Tape Operation
(If Applicable)	8
Winterizing	8
WIRING DIAGRAM	9
TROUBLESHOOTING	9
Status Codes	9
Component Test	9

SAFETY CONSIDERATIONS

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 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.

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified service agency personnel should install, repair, or service heating equip- ment.

Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained and qualified service agency personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply.

Follow all safety codes including the National Fuel Gas Code (NFGC) NFPA 54-1999/ANSI Z223.1-1999 in the USA; National Standard of Canada, Natural Gas and Propane Installation Code