Integrated Gas Control IGC Board IGC Connections | Carrier 48TC*D08

Red LED-Status

48TC

C08452

Fig. 39 - Integrated Gas Control (IGC) Board

Table 10 – IGC Connections

	TERMINAL LABEL	POINT DESCRIPTION	SENSOR LOCATION	TYPE OF I/O	CONNECTION
	TERMINAL LABEL	POINT DESCRIPTION	SENSOR LOCATION	TYPE OF I/O	PIN NUMBER
					PIN NUMBER

	INPUTS

	RT, C	Input power from TRAN 1	control box	24 VAC	—

	SS	Speed sensor	gas section	analog input	J1, 1-3

	FS, T1	Flame sensor	gas section	switch input	—

	W	Heat stage 1	LCTB	24 VAC	J2, 2

	RS	Rollout switch	gas section	switch input	J2, 5-6

	LS	Limit switch	fan section	switch input	J2, 7-8

	CS	Centrifugal switch (not used)	—	switch input	J2, 9-10

	OUTPUTS

	L1, CM	Induced draft combustion motor	gas section	line VAC

	IFO	Indoor fan	control box	relay	J2, 1

	GV	Gas valve (heat stage 1)	gas section	relay	J2, 11-12

31

Image 31

Carrier 48TC*D08 appendix Integrated Gas Control IGC Board IGC Connections, Outputs

Contents

Safety Considerations Table of Contents General Unit Arrangement and AccessWhat to do if you smell gas Seasonal Maintenance Routine Maintenance Supply Fan Belt-Drive Supply FAN Blower SectionManual 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 Puronr R-410A Refrigerant Refrigerant System Pressure Access PortsRefrigerant 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 Control Circuit GAS Heating SystemFuel Types and Pressures Combustion-Air Blower Flue Gas Passageways Main Burners Burners and Igniters Check Unit Operation and Make Necessary Adjustments Cleaning and AdjustmentLimit Switch LED Indication Error Code Description LED 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 Repairing Novation Condenser Tube Leaks Condenser Coil ServiceReplacing Novation Condenser Coil PREMIERLINKt Control Typical PremierLinkt System Control Wiring Diagram Temp Resistance 55 Space Temperature Sensor Wiring TB1 Terminal Field Connection Input Signal Space Sensor ModePremierLink 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 Power Exhaust output Connecting Discrete InputsCommunication 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 IV Input/Output Logic EconoMi$erInputs Outputs Outdoor Dry Bulb Changeover Supply Air Temperature SAT SensorOutdoor Air Lockout Sensor EconoMi$er IV Control Modes Outdoor Enthalpy Changeover Differential Dry Bulb Control Indoor Air Quality IAQ Sensor Input Exhaust Setpoint AdjustmentMinimum Position Control Thermostats Damper MovementDemand Control Ventilation DCV CO2 Sensor Standard Settings CO2 Sensor ConfigurationAnalog 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 Physical Data Appendix II. 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 Wiring Diagrams Appendix IV. Wiring Diagram ListSize Voltage Control Power Catalog No 48TC-3SM Appendix V. Motormaster Sensor Locations Preliminary Information Unit START-UP Checklist