Carrier 48TCD08 appendix* Burners and Igniters, Main Burners

Page 27

HEATER TUBE

ASSEMBLY

SEAL STRIPS,

SPONGE RUBBER

REGULATOR

GASKET

REGULATOR

RETAINER

WIND CAP ASSEMBLY (SHOWN INVERTED, AS SHIPPED)

SUPPORT INSULATION ASSEMBLY

INDUCER FAN-MOTOR ASSEMBLY

BURNER ASSEMBLY

C08227

Fig. 33 - Heat Exchanger Assembly

48TC

Burners and Igniters

!CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

When working on gas train, do not hit or plug orifice spuds.

ORIFICE

1.00-in

(25.4 mm)

MANIFOLD

PIPE

C08211

Main Burners

To access burners, remove burner access panel and slide out burner partition. At the beginning of each heating season, inspect for deterioration or blockage due to corrosion or other causes. Observe the main burner flames and adjust, if necessary.

Orifice projection — Refer to Fig. 34 for maximum projection dimension for orifice face to manifold tube.

Fig. 34 - Orifice Projection

Removal and Replacement of Gas Train

See Fig. 29, 33, and 35.

1.Shut off manual gas valve.

2.Shut off power to unit.

3.Slide out burner partition.

4.Disconnect gas piping at unit gas valve.

5.Remove wires connected to gas valve. Mark each wire.

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Image 27

Contents Safety Considerations Table of ContentsUnit Arrangement and Access GeneralWhat to do if you smell gas Seasonal Maintenance Routine MaintenanceSupply FAN Blower Section Supply Fan Belt-DriveManual Outside Air Hood Screen Supply-Fan Pulley Adjustment Bearings Adjustable-Pitch Pulley on MotorCondenser Coil Coil Maintenance and Cleaning RecommendationPeriodic Clean Water Rinse CoolingRoutine Cleaning of Evaporator Coil Sufaces Routine Cleaning of Novation Condenser Coil SurfacesRefrigerant System Pressure Access Ports Puronr R-410A RefrigerantRefrigerant Charge Seatcore Cooling Charging Charts D08 Cooling Charging ChartsCooling Charging Charts D12 Cooling Charging Charts D14 Circuit a Cooling Charging Charts D14 Circuit B Problem Cause Remedy Cooling Service AnalysisCompressors Condenser-Fan Adjustment D08-D12 sizeCondenser-Fan Adjustment D14 size Troubleshooting Cooling SystemDuty Cycle Non-Powered TypeUnit-Powered Type Convenience OutletsSmoke Detectors Typical Supply Air Smoke Detector Sensor Location Smoke Detector LocationsFiop Smoke Detector Wiring and Response Completing Installation of Return Air Smoke SensorSensor and Controller Tests Sensor Alarm TestSensor Alarm Test Procedure Controller Alarm TestTo Configure the Dirty Sensor Test Operation Controller Alarm Test ProcedureDirty Controller Test Procedure Dirty Sensor Test ProcedureDirty Sensor Test Using an SD-TRK4 Detector CleaningSD-TRK4 Remote Alarm Test Procedure Remote Test/Reset Station Dirty Sensor TestTroubleshooting Compressor Protection Protective DevicesGAS Heating System Control CircuitFuel Types and Pressures Combustion-Air Blower Flue Gas PassagewaysMain Burners Burners and IgnitersCleaning and Adjustment Check Unit Operation and Make Necessary AdjustmentsLimit Switch LED Error Code Description LED Indication Error Code DescriptionBurner Ignition Gas Valve Orifice ReplacementOutputs Integrated Gas Control IGC Board IGC ConnectionsElevation Orifice SizesAltitude Compensation Orifice Carrier Drill Drill Size Part NumberProblem Cause Remedy Troubleshooting Heating SystemMinimum Heating Entering Air Temperature Heating Service AnalysisIGC IGC Board LED Alarm CodesCondenser Coil Service Repairing Novation Condenser Tube LeaksReplacing Novation Condenser Coil PREMIERLINKt Control Typical PremierLinkt System Control Wiring Diagram Temp Resistance 55 Space Temperature Sensor WiringSpace Sensor Mode TB1 Terminal Field Connection Input SignalPremierLink Sensor Usage 56 Internal Connections Thermostat ModeLctb Indoor CO2 Sensor 33ZCSENCO2 Connections PremierLink Filter Switch Connection Color Code Recommendations Signal Type CCN BUS Wire CCN Plug PIN Color NumberRTU-MP Control System Recommended CablesRTU-MP Multi-Protocol Control Board Typical RTU-MP System Control Wiring Diagram Type of I/O Connection PIN Name Numbers Inputs Configurable InputsRTU-MP Controller Inputs and Outputs Point NameRTU-MP T-55 Sensor Connections Space Temperature SPT SensorsRTU-MP / Indoor CO2 Sensor 33ZCSENCO2 Connections Connecting Discrete Inputs Power Exhaust outputCommunication Wiring Protocols RTU-MP Troubleshooting LEDs BACview6 Handheld ConnectionsTroubleshooting Alarms BACnet MS/TP AlarmsModule Status Report Modstat Example Code Name Meaning Basic Protocol TroubleshootingModbus Manufacture DateEconoMi$er IV Component Locations ECONOMI$ER SystemsEconoMi$er IV Wiring EconoMi$er EconoMi$er IV Input/Output LogicInputs Outputs Outdoor Dry Bulb Changeover Supply Air Temperature SAT SensorOutdoor Air Lockout Sensor EconoMi$er IV Control ModesOutdoor Enthalpy Changeover Differential Dry Bulb ControlExhaust Setpoint Adjustment Indoor Air Quality IAQ Sensor InputMinimum Position Control Damper Movement ThermostatsDemand Control Ventilation DCV CO2 Sensor Configuration CO2 Sensor Standard SettingsAnalog CO2 Differential Enthalpy DCV Demand Controlled Ventilation and Power ExhaustEconoMi$er IV Sensor Usage EconoMi$er IV PreparationSupply-Air Sensor Input Wiring DiagramsEconoMi$er IV Troubleshooting Completion DCV Minimum and Maximum Position48TC Typical Unit Wiring Diagram Power D08, 208/230-3-60 48TC Typical Unit Wiring Diagram Control D08, 208/230-3-60 Gas Piping PRE-START-UPSTART-UP, General Unit PreparationOutdoor-Air Inlet Screens Internal WiringRefrigerant Service Ports Return-Air FiltersPerform System Check-Out Field Service TestSTART-UP, RTU-MP Control Ventilation Continuous FanConfiguration Heating Lockout Temp Cooling/Econ SAT Low SetptCooling Lockout Temp Heating Heating SAT High SetptIAQ High Reference @ 20mA Power Exhaust SetptT55/56 Override Duration IAQ Low Reference @ 4mAOperating Sequences PremierLinkt Control Supplemental Controls48TC 48TC Number Stages Economizer Available Cooling Stages48TC 48TC Linkage Modes Rooftop Mode Value Linkage ModeScheduling Loadshed Command Gas and Electric Heat UnitsAlways Occupied Default Occupancy RTU-MP Sequence of OperationIndoor Fan BACnet ScheduleBAS On/Off DI On/OffIndoor Air Quality Power ExhaustFastener Torque Values EconomizerTorque Values Position Number Typical Designates Appendix I. Model Number SignificanceModel Number Nomenclature Serial Number FormatAppendix II. Physical Data Physical Data12.5TONS Natural Gas Heat, Liquid Propane Heat Heat Anticipator Setting AmpsPhysical Data Heating 12.5TONS 48TC**08 48TC**12 48TC**14 Gas ConnectionCFM RPM BHP Appendix III. FAN Performance579 FAN PerformanceRPM BHP 48TC**14Unit MOTOR/DRIVE Motor Pulley Turns Open Combo Pulley AdjustmentElectrical Information Type DISC. Size Unit Combustion PowerMCA/MOCP Determination no C.O. or Unpwrd C.O NOM IFM FAN Motor Exhaust No P.EAppendix IV. Wiring Diagram List Wiring DiagramsSize Voltage Control Power Catalog No 48TC-3SM Appendix V. Motormaster Sensor LocationsPreliminary Information Unit START-UP Checklist