Burners and Igniters, Main Burners | Carrier 48TC*D08 specification

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.

27

Image 27

Carrier 48TC*D08 appendix Burners and Igniters, Main Burners

Contents

Safety Considerations Table of Contents Unit Arrangement and Access GeneralWhat to do if you smell gas Seasonal Maintenance Routine Maintenance Supply FAN Blower Section Supply Fan Belt-DriveManual Outside Air Hood Screen Supply-Fan Pulley Adjustment Bearings Adjustable-Pitch Pulley on Motor Condenser Coil Coil Maintenance and Cleaning RecommendationPeriodic Clean Water Rinse Cooling Routine Cleaning of Evaporator Coil Sufaces Routine Cleaning of Novation Condenser Coil Surfaces Refrigerant System Pressure Access Ports Puronr R-410A RefrigerantRefrigerant Charge Seatcore Cooling Charging Charts D08 Cooling Charging Charts Cooling Charging Charts D12 Cooling Charging Charts D14 Circuit a Cooling Charging Charts D14 Circuit B Problem Cause Remedy Cooling Service Analysis Compressors Condenser-Fan Adjustment D08-D12 sizeCondenser-Fan Adjustment D14 size Troubleshooting Cooling System Duty Cycle Non-Powered TypeUnit-Powered Type Convenience Outlets Smoke Detectors Typical Supply Air Smoke Detector Sensor Location Smoke Detector Locations Fiop Smoke Detector Wiring and Response Completing Installation of Return Air Smoke Sensor Sensor and Controller Tests Sensor Alarm TestSensor Alarm Test Procedure Controller Alarm Test To Configure the Dirty Sensor Test Operation Controller Alarm Test ProcedureDirty Controller Test Procedure Dirty Sensor Test Procedure Dirty Sensor Test Using an SD-TRK4 Detector CleaningSD-TRK4 Remote Alarm Test Procedure Remote Test/Reset Station Dirty Sensor Test Troubleshooting Compressor Protection Protective Devices GAS Heating System Control CircuitFuel Types and Pressures Combustion-Air Blower Flue Gas Passageways Main Burners Burners and Igniters Cleaning and Adjustment Check Unit Operation and Make Necessary AdjustmentsLimit Switch LED Error Code Description LED Indication Error Code DescriptionBurner Ignition Gas Valve Orifice Replacement Outputs Integrated Gas Control IGC Board IGC Connections Elevation Orifice SizesAltitude Compensation Orifice Carrier Drill Drill Size Part Number Problem Cause Remedy Troubleshooting Heating SystemMinimum Heating Entering Air Temperature Heating Service Analysis IGC IGC Board LED Alarm Codes Condenser Coil Service Repairing Novation Condenser Tube LeaksReplacing Novation Condenser Coil PREMIERLINKt Control Typical PremierLinkt System Control Wiring Diagram Temp Resistance 55 Space Temperature Sensor Wiring Space Sensor Mode TB1 Terminal Field Connection Input SignalPremierLink Sensor Usage 56 Internal Connections Thermostat Mode Lctb 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 Cables RTU-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 Name RTU-MP T-55 Sensor Connections Space Temperature SPT Sensors RTU-MP / Indoor CO2 Sensor 33ZCSENCO2 Connections Connecting Discrete Inputs Power Exhaust outputCommunication Wiring Protocols RTU-MP Troubleshooting LEDs BACview6 Handheld Connections Troubleshooting Alarms BACnet MS/TP Alarms Module Status Report Modstat Example Code Name Meaning Basic Protocol TroubleshootingModbus Manufacture Date EconoMi$er IV Component Locations ECONOMI$ER Systems EconoMi$er IV Wiring EconoMi$er EconoMi$er IV Input/Output LogicInputs Outputs Outdoor Dry Bulb Changeover Supply Air Temperature SAT SensorOutdoor Air Lockout Sensor EconoMi$er IV Control Modes Outdoor Enthalpy Changeover Differential Dry Bulb Control Exhaust 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 Preparation Supply-Air Sensor Input Wiring DiagramsEconoMi$er IV Troubleshooting Completion DCV Minimum and Maximum Position 48TC 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 Preparation Outdoor-Air Inlet Screens Internal WiringRefrigerant Service Ports Return-Air Filters Perform System Check-Out Field Service TestSTART-UP, RTU-MP Control Ventilation Continuous Fan Configuration Heating Lockout Temp Cooling/Econ SAT Low SetptCooling Lockout Temp Heating Heating SAT High Setpt IAQ High Reference @ 20mA Power Exhaust SetptT55/56 Override Duration IAQ Low Reference @ 4mA Operating Sequences PremierLinkt Control Supplemental Controls 48TC 48TC Number Stages Economizer Available Cooling Stages 48TC 48TC Linkage Modes Rooftop Mode Value Linkage Mode Scheduling Loadshed Command Gas and Electric Heat UnitsAlways Occupied Default Occupancy RTU-MP Sequence of Operation Indoor Fan BACnet ScheduleBAS On/Off DI On/Off Indoor Air Quality Power ExhaustFastener Torque Values Economizer Torque Values Position Number Typical Designates Appendix I. Model Number SignificanceModel Number Nomenclature Serial Number Format Appendix 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 Connection CFM RPM BHP Appendix III. FAN Performance 579 FAN Performance RPM BHP 48TC**14 Unit MOTOR/DRIVE Motor Pulley Turns Open Combo Pulley Adjustment Electrical Information Type DISC. Size Unit Combustion PowerMCA/MOCP Determination no C.O. or Unpwrd C.O NOM IFM FAN Motor Exhaust No P.E Appendix IV. Wiring Diagram List Wiring DiagramsSize Voltage Control Power Catalog No 48TC-3SM Appendix V. Motormaster Sensor Locations Preliminary Information Unit START-UP Checklist