1
PG9MAB
Service and Maintenance Instructions
For Sizes 040--120, Series B
D e l u x e 4 --- W a y
Multipoise Fixed Capacity
Condensing Gas Furnace
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1.........................
GENERAL 2.........................................
ELECTROSTATIC DISCHARGE (ESD) P RECAUTIONS 2...
CARE AND MAINTENANCE 3.........................
Cleaning and/or Replacing Air Filter 3....................
Blower Motor and Wheel Maintenance 4..................
Cleaning Burners 6...................................
Cleaning Heat Exchangers 6............................
Primary Heat Exchangers 6............................
Secondary Heat Exchangers 7..........................
Flushing Collector Box and Drainage System 7.............
Servicing Hot Surface Igniter 9..........................
Electrical Controls and Wiring 10........................
Checking Heat Tape Operation (If Applicable) 10...........
Winterizing 12......................................
WIRING DIAGRAM 12................................
TROUBLESHOOTING 12..............................
Status Codes 12.....................................
Component Tests 13..................................
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could result in
dangerous operation, personal injury, death, or property
damage.
-- Before servicing, disconnect all electrical power to furnace.
--When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
-- Verify proper operation after servicing.
!
WARNING
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
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 a hazard
which could result in personal injury o r 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.
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
HAZARD
Failure to follow this warning could result in possible
damage to this equipment, 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 property damage,
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.
!
WARNING
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