NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
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 injury, death, or property damage.
- Before servicing, disconnect all electrical power to
furnace.
- When servicing controls, label all wires prior to discon-
necting. Reconnect wires correctly.
- Verify proper operation after servicing.
WARNING: ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow this warning could result in possible
damage to this equipment, serious personal injury, or
death.
The ability to properly perform maintenance on this
equipment requires certain expertise, mechanical skills,
tools, and equipment. If you do not possess these, do not
attempt to perform any maintenance on this equipment
other than those procedures recommended in the User’s
Manual.
WARNING: FIRE OR EXPLOSION HAZARD
Failure to follow this warning could cause corrosion of
heat exchanger, fire, personal injury, or death.
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.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................1
GENERAL......................................................................................2
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........2
CARE AND MAINTENANCE.....................................................3
Cleaning and/or Replacing Air Filter.......................................3
Blower Motor and Wheel Maintenance...................................4
Cleaning Burners ......................................................................4
Cleaning Heat Exchangers........................................................5
Primary Heat Exchanger........................................................5
Secondary Heat Exchanger....................................................6
Flushing Collector Box and Drainage System ........................6
Servicing Hot Surface Igniter...................................................8
Electrical Controls and Wiring.................................................8
Checking Heat Tape Operation (If Applicable) ......................9
Winterizing................................................................................9
WIRING DIAGRAM.....................................................................9
TROUBLESHOOTING ...............................................................10
Status Codes............................................................................10
Component Test......................................................................11
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, CAUTION,
and NOTE. 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 may 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
A93040
service and
maintenance procedures
4–WAY MULTIPOISE
FIXED-CAPACITY DIRECT-VENT
CONDENSING GAS FURNACE
Cancels: SP05-61 SP05-66
8-04
340MAV
Series J
—1—
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