Printed in U.S.A. 440 04 4201 03 July 2012
SERVICE AND TECHNICAL
SUPPORT MANUAL
Modulating, Variable Speed Blower Motor
35” Tall, High Efficiency Condensing Gas Furnace
F/G
9MAC
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Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and NOTE
The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manual that may
apply to the product.
DANGER − Immediate hazards which will result in
severe personal injury or death.
WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
!
WARNING
Signal Words in Manuals
The signal word CAUTION is used throughout
this manual in the following manner:
!
CAUTION
Signal Words on Product Labeling
Signal words are used in combination with
colors and/or pictures or product labels.
The signal word WARNING is used throughout
this manual in the following manner:
Safety−alert symbol
When you see this symbol on the unit and in
instructions or manuals, be alert to the
potential for personal injury.
TABLE OF CONTENTS
START−UP, ADJUSTMENT, AND SAFETY CHECK 4...........
SELECT SETUP SWITCH POSITIONS 4.....................
PRIME CONDENSATE TRAP WITH WATER 4.................
PURGE GAS LINES 5......................................
ADJUSTMENTS 5.........................................
ADJUST TEMPERATURE RISE 8............................
ADJUST BLOWER OFF DELAY (HEAT MODE) 9..............
ADJUST COOLING AIRFLOW 9.............................
ADJUST CONTINUOUS FAN AIRFLOW 9....................
ADJUST THERMOSTAT HEAT ANTICIPATOR 11...............
CHECK SAFETY CONTROLS 12.............................
CHECKLIST 12.............................................
COOLING AND HEATING AIR DELIVERY 17...................
SERVICE AND MAINTENANCE PROCEDURES 21.............
ELECTRICAL CONTROLS AND WIRING 21...................
CLEANING AND/OR REPLACING AIR FILTER 23..............
CLEANING BURNERS AND FLAME SENSOR 25...............
SERVICING HOT SURFACE IGNITER 26......................
FLUSHING COLLECTOR BOX AND DRAINAGE SYSTEM 27....
CLEANING CONDENSATE DRAIN AND TRAP 27..............
WINTERIZATION 28........................................
SERVICE LABEL 29.........................................
TROUBLESHOOTING CHART − FLOW CHART 31.............
TROUBLESHOOTING GUIDE − FLOW CHART 32..............
SEQUENCE OF OPERATION 34.............................
PARTS REPLACEMENT INFORMATION GUIDE 38.............
PRODUCT NOMENCLATURE 39.............................
MODELS
(F/G)9MAC0601714A
(F/G)9MAC0602120A
(F/G)9MAC0801714A
(F/G)9MAC0802120A
(F/G)9MAC1002122A
(F/G)9MAC1202422A
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
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