2
FILTERS ................................................................................. 12
VENTING ....................................................................................... 12
FLUE HOOD INSTALLATION .................................................. 12
CONDENSATE DRAIN .................................................................... 12
CONDENSATE DRAIN CONNECTION .................................... 12
NORMAL SEQUENCE OF OPERATION ........................................... 12
COOLING .............................................................................. 13
FAN ONLY ............................................................................. 13
STARTUP, ADJUSTMENTS, AND CHECKS ....................................... 13
HEATING STARTUP .............................................................. 13
GAS SUPPLY PRESSURE MEASUREMENT ............................. 14
GAS MANIFOLD PRESSURE MEASUREMENT
AND ADJUSTMENT ............................................................... 15
COOLING STARTUP .............................................................. 17
TEMPERATURE RISE CHECK ................................................ 16
EXTERNAL STATIC PRESSURE CHECK .................................. 16
SUPERHEAT ................................................................................... 17
CHECKING SUPERHEAT ....................................................... 17
CHECKING SUBCOOLING ..................................................... 18
TROUBLESHOOTING ..................................................................... 18
IGNITION CONTROL ERROR CODES ..................................... 18
ABNORMAL OPERATION - HEATING
.................................... 18
ABNORMAL OPERATION - COOLING
................................... 20
MAINTENANCE ............................................................................. 20
FILTER REPLACEMENT OR CLEANING ................................. 20
CABINET FINISH MAINTENANCE ......................................... 20
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
.......... 20
CONDENSER, EVAPORATOR,
AND INDUCED DRAFT MOTORS
..................................... 20
FLAME SENSOR (QUALIFIED SERVICER ONLY)
..................... 20
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
.................... 20
CLEANING FLUE PASSAGES
(QUALIFIED SERVICER ONLY)
........................................... 20
MAIN BURNER FLAME (QUALIFIED SERVICER ONLY)
.......... 21
CLEANING BURNERS ............................................................ 21
ACCESSORIES AND FUNCTIONAL PARTS ...................................... 21
SHEET METAL ACCESSORIES ............................................... 21
FUNCTIONAL PARTS ............................................................. 21
GENERAL INFORMATION ..................................................... 21
BLOWER PERFORMANCE DATA .................................................... 22
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
(SINGLE STAGE MODELS ONLY)
.................................................... 26
HEATING TIMING CHART .............................................................. 26
COOLING TIMING CHART ............................................................. 26
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
(TWO-STAGE MODELS ONLY)
........................................................ 27
HEATING TIMING CHART .............................................................. 27
COOLING TIMING CHART ............................................................. 27
APPENDIX ..................................................................................... 28
UNIT DIMENSIONS ....................................................................... 28
MINIMUM CLEARANCES .............................................................. 29
RECOMMENDED FILTER SIZES ...................................................... 29
WIRING DIAGRAMS ...................................................................... 30
HOMEOWNER’S ROUTINE MAINTENANCE .................................. 43
START-UP SHEET
........................................................................... 44