service and | 350MAV |
maintenance procedures | Series G |
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 |
Cancels: | |
|
| 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 
. 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
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
