ICP N9MSB0401410B, Service And Technical Support Manual

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Printed in U.S.A.
440 04 4412 01
March 2013
SERVICE AND TECHNICAL
SUPPORT MANUAL
Single Stage, PSC Blower Motor
35” Tall, High Efficiency Condensing Gas Furnace
N9MSB (B Series)
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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 . . . . . . . . . . .
PRIME CONDENSATE TRAP WITH WATER 4 . . . . . . . . . . . . . . . . .
PURGE GAS LINES 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUST TEMPERATURE RISE 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUST BLOWER OFF DELAY (HEAT MODE) 11 . . . . . . . . . . . . . .
ADJUST COOLING AIRFLOW 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUST THERMOSTAT HEAT ANTICIPATOR 11 . . . . . . . . . . . . . . .
CHECK SAFETY CONTROLS 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKLIST 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE AND MAINTENANCEPROCEDURES 13 . . . . . . . . . . . . . .
RETRIEVING STORED FAULT CODES 14 . . . . . . . . . . . . . . . . . . . . .
COMPONENT SELF − TEST 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CARE AND MAINTENANCE 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLEANING AND/OR REPLACING AIR FILTER 15 . . . . . . . . . . . . . .
BLOWER MOTOR AND WHEEL MAINTENANCE 15 . . . . . . . . . . . .
CLEANING BURNERS AND FLAME SENSOR 17 . . . . . . . . . . . . . . .
SERVICING HOT SURFACE IGNITER 18 . . . . . . . . . . . . . . . . . . . . . .
FLUSHING COLLECTOR BOX AND DRAINAGE SYSTEM 18 . . . .
CLEANING CONDENSATE DRAIN AND TRAP 19 . . . . . . . . . . . . . .
CLEANING HEAT EXCHANGERS 19 . . . . . . . . . . . . . . . . . . . . . . . . . .
WINTERIZATION 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE LABEL 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAM 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING GUIDE − FLOW CHART 23 . . . . . . . . . . . . . .
SEQUENCE OF OPERATION 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS REPLACEMENT INFORMATION GUIDE 26 . . . . . . . . . . . . .
PRODUCT NOMENCLATURE 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MODELS
N9MSB0401410B
N9MSB0401712B
N9MSB0601412B
N9MSB0601716B
N9MSB0801716B
N9MSB0802120B
N9MSB1002116B
N9MSB1002122B
N9MSB1202422B
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 .