Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48TC*D08 appendix Torque Values

Models: 48TC*D08

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Table 33 – Torque Values

Supply fan motor mounting	120 ¦ 12 in---lbs		13.5 ¦ 1.4 Nm

Supply fan motor adjustment plate	120 ¦ 12 in---lbs		13.5 ¦ 1.4 Nm

Motor pulley setscrew	72	¦ 5 in---lbs	8.1 ¦ 0.6 Nm

Fan pulley setscrew	72	¦ 5 in---lbs	8.1 ¦ 0.6 Nm

Blower wheel hub setscrew	72	¦ 5 in---lbs	8.1 ¦ 0.6 Nm

Bearing locking collar setscrew	65 to70 in---lbs		7.3 to 7.9 Nm
Compressor mounting bolts	65 to75 in---lbs		7.3 to 7.9 Nm

Condenser fan motor mounting bolts	20	¦ 2 in---lbs	2.3 ¦ 0.2 Nm

Condenser fan hub setscrew	84	¦ 12 in---lbs	9.5 ¦ 1.4 Nm

48TC

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Contents

Service and Maintenance Instructions TABLE OF CONTENTSSAFETY CONSIDERATIONS With Puron R---410ARefrigerantFig. 1 - Typical Access Panel Locations Back UNIT ARRANGEMENT AND ACCESSUNIT OPERATION AND SAFETY HAZARD GeneralFig. 2 - Typical Access Panel Location Front Routine MaintenanceSeasonal Maintenance Air ConditioningSUPPLY FAN BLOWER SECTION Fig. 3 - Filter InstallationFig. 4 - Screens Installed on Outdoor-AirHood Supply Fan Belt-DriveFig. 7 - Tightening Locking Collar Motor Adjustable-PitchPulley on MotorFig. 6 - Supply-FanPulley Adjustment Bearings 48TCCOOLING Coil Maintenance and Cleaning RecommendationPeriodic Clean Water Rinse Condenser CoilPERSONAL INJURY HAZARD Routine Cleaning of Evaporator Coil SufacesPERSONAL INJURY HAZARD PERSONAL INJURY HAZARDPURONR R-410AREFRIGERANT Refrigerant System Pressure Access PortsTo Use Cooling Charging Charts Refrigerant Charge48TC Fig. 9 - CoreMax Access Port AssemblySEATCORE 48TC COOLING CHARGING CHARTSFig. 10 - Cooling Charging Charts D08 48TC Fig. 11 - Cooling Charging Charts D12COOLING CHARGING CHARTS C0867048TC Fig. 12 - Cooling Charging Charts D14 - Circuit ACOOLING CHARGING CHARTS C0915148TC Fig. 13 - Cooling Charging Charts D14 - Circuit BCOOLING CHARGING CHARTS C09152Table 1 - Cooling Service Analysis 48TCTroubleshooting Cooling System Condenser-FanAdjustment D08-D12sizeCondenser-FanAdjustment D14 size Fig. 14 - Condenser Fan Adjustment D08-D12Fig. 17 - Powered Convenience Outlet Wiring Non-PoweredTypeUnit-PoweredType CONVENIENCE OUTLETSUsing Unit-MountedConvenience Outlets MaintenanceFuse On Powered Type Fig. 18 - Controller AssemblyFig. 19 - Smoke Detector Sensor Smoke Detector LocationsLocation Fig. 21 - Typical Return Air Detector LocationFig. 23 - Return Air Detector Shipping Position FIOP Smoke Detector Wiring and ResponseFig. 22 - Return Air Sampling Tube Location Fig. 24 - Return Air Sensor Operating PositionSensor Alarm Test Procedure Fig. 25 - Typical Smoke Detector System WiringSensor Alarm Test Controller Alarm TestDirty Sensor Test Procedure Controller Alarm Test ProcedureDirty Controller Test Procedure To Configure the Dirty Sensor Test OperationRemote Test/Reset Station Dirty Sensor Test Detector CleaningSD-TRK4Remote Alarm Test Procedure Dirty Sensor Test Using an SD-TRK4Alarm State INDICATORSTroubleshooting Fig. 28 - Controller AssemblyOvertemperature Table 3 – Detector IndicatorsController’s Power LED is Off High Pressure SwitchControl Circuit Fig. 30 - Limit Switch LocationGAS HEATING SYSTEM Fuel Types and PressuresCombustion-AirBlower Fig. 31 - LP Low Pressure Switch InstalledFlue Gas Passageways 48TCBurners and Igniters Fig. 33 - Heat Exchanger AssemblyRemoval and Replacement of Gas Train EQUIPMENT DAMAGE HAZARDFig. 35 - Burner Tray Details Cleaning and AdjustmentLimit Switch Fig. 36 - Unit Control Box/IGC LocationBurner Ignition Fig. 37 - Spark AdjustmentTable 9 – LED Error Code Description 48TC48TC Orifice ReplacementFig. 38 - Gas Valve Red LED-Status Fig. 39 - Integrated Gas Control IGC BoardTable 10 - IGC Connections 48TC48TC Table 11 – Orifice SizesTable 12 - Altitude Compensation* Table 13 – Heating Service Analysis Troubleshooting Heating SystemMinimum Heating Entering Air Temperature Fig. 40 - OATL Connections48TC Table 14 – IGC Board LED Alarm CodesRESET METHOD DESCRIPTIONReplacing NOVATION Condenser Coil CONDENSER COIL SERVICERepairing NOVATION Condenser Tube Leaks Fig. 41 - PremierLinkt Controller48TC PREMIERLINKt CONTROLSUPPLY AIR TEMPERATURE SENSOR SUPPLY AIR ROOF CURB RETURN AIR48TC C0866548TC Fig. 44 - T-55Space Temperature Sensor WiringFig. 45 - PremierLink T-55Sensor 48TC Table 16 – PremierLink Sensor UsageTable 17 - Space Sensor Mode Fig. 47 - PremierLink T-56Sensor Table 18 – Thermostat ModeFig. 46 - T-56Internal Connections Fig. 48 - Space Thermostat ConnectionsEnthalpy Fig. 52 - Indoor CO2 Sensor 33ZCSENCO2 33ZCSENCO2 - Typical Wiring DiagramFig. 51 - Indoor/Outdoor Air Quality CO2 Sensor ConnectionsFig. 57 - PremierLink Wiring Remote Occupied Fig. 55 - PremierLink Filter Switch ConnectionFig. 56 - PremierLink Wiring Fan Pressure Switch ConnectionTable 19 – Recommended Cables Fig. 58 - PremierLinkt Power Exhaust OutputRTU-MPCONTROL SYSTEM Table 20 – Color Code RecommendationsC07129 Fig. 60 - RTU-MP Multi-ProtocolControl Board48TC 48TC C0916348TC Table 21 – RTU-MPController Inputs and OutputsCONFIGURABLE POINT NAMEFig. 62 - RTU-MP T-55Sensor Connections Space Temperature SPT SensorsFig. 64 - Space Temperature Sensor Typical Wiring Fig. 63 - RTU-MP T-56Sensor Connections48TC Fig. 65 - RTU-MP /Indoor CO2 Sensor33ZCSENCO2 Connections Communication Wiring - Protocols Connecting Discrete InputsPower Exhaust output Fig. 67 - RTU-MPPower Exhaust ConnectionsLocal Access RTU-MPTroubleshootingFig. 68 - RTU-MPSW3 Dip Switch Settings BACnet MS/TPAnd Error LED shows Fig. 69 - BACview6 Handheld ConnectionsTable 22 – LEDs 48TC48TC Table 23 – Troubleshooting AlarmsRESET ACTION TAKEN BYFire Shutdown Alarm AlarmsSafety Chain Alarm SAT Sensor AlarmFig. 70 - Module Status Report Modstat Example 48TCTable 24 – Manufacture Date Table 25 – Basic Protocol TroubleshootingModbus Table 26 – Modbus Exception Codes that May beFig. 72 - EconoMi$er2 Component Locations ECONOMI$ER SYSTEMSFig. 71 - EconoMi$er IV Component Locations 48TCFig. 73 - EconoMi$er IV Wiring 48TCTable 27 – EconoMi$er IV Input/Output Logic Outdoor Air Temperature OAT SensorEconoMi$er Fig. 75 - EconoMi$er IV Functional ViewFig. 76 - Supply Air Sensor Location Supply Air Temperature SAT SensorFig. 78 - Outside Air Temperature Changeover Outdoor Air Lockout SensorMounting Location Differential Dry Bulb ControlOutdoor Enthalpy Changeover Fig. 81 - Enthalpy Changeover SetpointsFig. 82 - EconoMi$er IV Control Fig. 83 - CO2 Sensor Maximum Range SettingsExhaust Setpoint Adjustment Differential Enthalpy ControlDemand Control Ventilation DCV Damper MovementThermostats 48TC48TC CO2 Sensor ConfigurationTable 28 – CO2 Sensor Standard Settings Differential Enthalpy Table 29 - EconoMi$er IV Sensor UsageEconoMi$er IV Preparation Single EnthalpyDCV Minimum and Maximum Position WIRING DIAGRAMSEconoMi$er IV Troubleshooting Completion Supply-AirSensor Input48TC C0915648TC C09157Unit Preparation PRE-START-UPSTART-UP,GENERAL Gas PipingReturn-AirFilters Internal WiringRefrigerant Service Ports Outdoor-AirInlet ScreensSTART-UP,PREMIERLINKt CONTROLS Field Service TestMemory Reset START-UP, RTU-MPCONTROLFilter Service Hours ConfigurationUnit Start Delay Supply Fan Service HoursHeating Heating SAT High Setpt Cooling/Econ SAT Low SetptCooling Lockout Temp Heating Lockout TempIAQ Low Reference @ 4mA Power Exhaust SetptT55/56 Override Duration IAQ High Reference @ 20mACooling, Units Without Economizer OPERATING SEQUENCESBase Unit Controls Heating, Units Without Economizer48TC Supplemental ControlsPremierLinkt Control IAQS = IAQD + OAQ OAQ = 400 ppm if not present 48TCSWhen Pre-OccupancyPurge is active 48TCTable 30 – Available Cooling Stages 48TC48TC S Indoor fan has been ON for at least 30 secondsIAQS = IAQD + OAQ OAQ = 400 ppm if not present 48TCTable 31 – Linkage Modes 48TCRTU-MPSequence of Operation Table 32 – Loadshed Command — Gas and ElectricAlways Occupied Default Occupancy Heat UnitsDI On/Off BACnet ScheduleBAS On/Off Indoor FanEconomizer Power ExhaustFASTENER TORQUE VALUES Indoor Air QualityTable 33 – Torque Values 48TCSerial Number Format APPENDIX I. MODEL NUMBER SIGNIFICANCEModel Number Nomenclature 48TC7.5 - 12.5TONS APPENDIX II. PHYSICAL DATAPhysical Data CoolingHeating APPENDIX II. PHYSICAL DATA contPhysical Data 7.5 - 12.5TONS7.5 TON HORIZONTAL SUPPLY 3 PHASEAPPENDIX III. FAN PERFORMANCE 7.5 TON VERTICAL SUPPLY48TC**12 10 TON HORIZONTAL SUPPLY10 TON VERTICAL SUPPLY 3 PHASE12.5 TON HORIZONTAL SUPPLY 48TC**1412.5 TON VERTICAL SUPPLY 3 PHASE48TC Pulley AdjustmentAPPENDIX III. FAN PERFORMANCE cont 48TC*D08 ELECTRICAL INFORMATION48TC 2---StageCooling48TC MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O48TC APPENDIX IV. WIRING DIAGRAM LISTWiring Diagrams 48TC APPENDIX V. MOTORMASTER SENSOR LOCATIONSFig. 86 - 48TC*D08-D12Outdoor Circuiting I. PRELIMINARY INFORMATION UNIT START-UPCHECKLISTTEMPERATURES III. START-UP