2
GENERAL SPECIFICATIONS ......................................3
SAFETY CONSIDERATIONS .......................................3
•Literature,Labels,andTags ..................................3
•PressuresWithinTheSystem ............................... 3
INSTALLATION REQUIREMENTS ...............................3
•EquipmentApplication ..........................................3
•EquipmentCheck .................................................. 3
•RequirementsandCodes .....................................3
•UnitLocation ......................................................... 3
•VentingRequirements ....................................... 3,5
•UnitDimensions ....................................................4
•ClearancestoCombustibleMaterials ....................5
•Thermostat ............................................................ 5
•AirFilterRequirements .........................................5
•CondensateDrain ................................................. 6
UNIT INSTALLATION ................................................... 6
•GroundLevel .........................................................6
•RiggingandHoisting ............................................. 6
•Rooftop .................................................................. 7
AIR SUPPLY FOR COMBUSTION
ANDVENTILATION ................................................. 7
CIRCULATING AIR SUPPLY ........................................ 8
•UnconditionedSpaces .......................................... 8
•AcousticalDuctwork ..............................................8
•HorizontaltoDownFlowConversion ....................8
•AirowData ........................................................... 9
GAS SUPPLY AND PIPING .......................................10
•LeakCheck ......................................................... 10
GASANDHIGHALTITUDECONVERSIONS ............ 10
•HighAltitudeApplication ..................................... 10
•NaturalGasHighAltitudeConversion .................10
•LP/PropaneGasConversion ...............................10
ELECTRICALWIRING ............................................... 11
•General ...............................................................11
•LineVoltage .........................................................11
•ElectricalDataTable ............................................13
LOWVOLTAGEWIRING ............................................12
•HeatingCongurations ........................................ 12
VARIABLESPEEDBLOWER .....................................13
•ConguringtheBlower ........................................13
•SelectingHeatAirow .........................................13
•
SelectingtheCoolingAirow...............................13
WIRINGDIAGRAMS ....................................... 14,17,18
SYSTEMCHECK ......................................................15
•Pre-StartCheckList ........................................... 15
START-UP PROCEDURE ..........................................15
•AirCirculation ..................................................... 15
•SystemCooling .................................................. 15
•SystemHeating .................................................. 16
•VerifyingandAdjustingFiringRate .................... 16
•VerifyingandAdjustingTemperatureRise ..........16
•VerifyingBurnerOperation ................................. 16
•VerifyingOperationofOver-Temperature
Limit Control ....................................................... 19
COMPONENT FUNCTIONS .....................................19
•FlameSensor ..................................................... 19
•FlameRoll-OutControl ......................................19
•GasValve ........................................................... 19
•PressureSwitch ................................................. 19
•Over-TemperatureLimitControl .........................19
•ComfortAlertDiagnostics .................................. 19
•LedDescription .................................................. 19
•CompressorWireRouting ..................................20
UNIT MAINTENANCE ............................................... 20
•ThermostatSecondStageCoolingWiring .........20
•LTerminalWiring ................................................20
•DCSOLConnection ........................................... 20
•InterpretingtheDiagnosticsLEDs ......................20
•InstallationVerication ........................................20
•TroubleshootingtheInstallation ..........................24
•FlashCodeTables ........................................ 21,22
•ResettingAlertCodes ........................................ 24
•GasFlowRateTable ..........................................24
•RefrigerantCharging ..........................................25
•RoutineMaintenance ......................................... 25
•AirFilter .............................................................. 25
•VentCoverAssembly ......................................... 25
•CondensateDrainandOutdoorCoil ..................25
•Electrical ............................................................. 25
•MotorLubrication ...............................................25
•BlowerCompartment .........................................25
•HeatExchangerandBurnerMaintenance ......... 25
•CleaningofHeatExchanger .............................. 25
•CleaningofBurners ...........................................26
SEQUENCE OF OPERATION ...................................26
•HeatingMode ..................................................... 26
•CoolingMode ..................................................... 27
•FanMode ........................................................... 27
•UnitFailstoOperate ..........................................27
INSTALLATIONCHECKLIST .....................................28
TABLE OF CONTENTS