Carrier 48TC*D08 appendix ECONOMI$ER Systems, EconoMi$er IV Component Locations

Page 57

NOTE: See RTU-MP 3rd Party Integration Guide (or alternatively RTU-MP 3rd Party Integration Guide (or alternatively RTU-MP Controls, Start-Up, Operation, and Troubleshooting Instructions (Form 48-50H-T-2T), Appendix) for Modbus Protocol Conformance Statement.

N2

1. Verify that the BAS and controller are both set to

speak the N2 protocol. The protocol of the controller

is set via SW3 (switches 3, 4, 5, and 6). The protocol

can also be verified by getting a Modstat of the

controller through the BACview. Hit the “FN” key

and the ’.’ key at the same time to pull up a Modstat.

ECONOMI$ER SYSTEMS

The 48TC units may be equipped with a factory-installed or accessory (field-installed) economizer system. Two types are available: with a logic control system (EconoMi$er IV) and without a control system (EconoMi$er2, for use with external control systems such as PremierLink). See Fig. 71 and Fig. 72 for component locations on each type. See Fig. 73 and Fig. 74 for economizer section wiring diagrams.

Both EconoMi$ers use direct-drive damper actuators.

Scroll to the bottom of the page and there is a section

entitled

”Network Communications.”

The

active

protocol and baud rate will be shown in this section.

2. Verify that the BAS and controller are set for 9600

baud. The baud rate of the controller is set via SW3

(switches 1 and 2). The baud rate can also be verified

via the BACview by obtaining a Modstat. (See Fig.

70.)

 

 

 

3. Verify that the BAS is configured to speak 2-wire

EIA-485

to the controller. The BAS

may

have to

WIRING HARNESS

ACTUATOR (HIDDEN)

LOW TEMPERATURE

COMPRESSOR

LOCKOUT SWITCH

OUTSIDE AIR TEMPERATURE SENSOR (OPERATING LOCATION)

ECONOMI$ER IV

CONTROLLER

48TC

 

configure jumper or DIP switches on their end.

4.

Verify that the BAS and the controller have the same

 

communication settings (8 data bits, No Parity, and 1

 

stop bit).

5.

Verify that the controller has a unique N2 slave

 

address on the N2 bus. The controller’s N2 slave

 

address is set by its rotary address switches.

6.

Verify proper wiring between the BAS and the

 

controller.

7.

Verify that the BAS is reading or writing to the proper

 

network point addresses on the controller. Download

 

the latest points list for the controller to verify.

8.

Verify that the BAS is sending his requests to the

 

proper slave address of our controller.

NOTE: See RTU-MP 3rd Party Integration Guide (or alternatively RTU-MP 3rd Party Integration Guide (or alternatively RTU-MP Controls, Start-Up, Operation, and Troubleshooting Instructions (Form 48-50H-T-2T) Appendix) for N2 Protocol Conformance Statement.

C07367

Fig. 71 - EconoMi$er IV Component Locations

 

OUTDOOR

 

AIR HOOD

ECONOMI$ER2

HOOD

PLUG

SHIPPING

 

BRACKET

GEAR DRIVEN

BAROMETRICDAMPER RELIEF

DAMPER

C06022

Fig. 72 - EconoMi$er2 Component Locations

57

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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 MotorPeriodic Clean Water Rinse Coil Maintenance and Cleaning RecommendationCooling Condenser CoilRoutine 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 AnalysisCondenser-Fan Adjustment D14 size Condenser-Fan Adjustment D08-D12 sizeTroubleshooting Cooling System CompressorsUnit-Powered Type Non-Powered TypeConvenience Outlets Duty CycleSmoke Detectors Typical Supply Air Smoke Detector Sensor Location Smoke Detector LocationsFiop Smoke Detector Wiring and Response Completing Installation of Return Air Smoke SensorSensor Alarm Test Procedure Sensor Alarm TestController Alarm Test Sensor and Controller TestsDirty Controller Test Procedure Controller Alarm Test ProcedureDirty Sensor Test Procedure To Configure the Dirty Sensor Test OperationSD-TRK4 Remote Alarm Test Procedure Detector CleaningRemote Test/Reset Station Dirty Sensor Test Dirty Sensor Test Using an SD-TRK4Troubleshooting 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 ConnectionsAltitude Compensation Orifice SizesOrifice Carrier Drill Drill Size Part Number ElevationMinimum Heating Entering Air Temperature Troubleshooting Heating SystemHeating Service Analysis Problem Cause RemedyIGC 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 RTU-MP Control System Signal Type CCN BUS Wire CCN Plug PIN Color NumberRecommended Cables Color Code RecommendationsRTU-MP Multi-Protocol Control Board Typical RTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs Configurable InputsPoint Name Type of I/O Connection PIN Name Numbers InputsRTU-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 Modbus Basic Protocol TroubleshootingManufacture Date Code Name MeaningEconoMi$er IV Component Locations ECONOMI$ER SystemsEconoMi$er IV Wiring EconoMi$er EconoMi$er IV Input/Output LogicInputs Outputs Outdoor Air Lockout Sensor Supply Air Temperature SAT SensorEconoMi$er IV Control Modes Outdoor Dry Bulb ChangeoverOutdoor 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 EconoMi$er IV Sensor Usage DCV Demand Controlled Ventilation and Power ExhaustEconoMi$er IV Preparation Differential EnthalpyEconoMi$er IV Troubleshooting Completion Wiring DiagramsDCV Minimum and Maximum Position Supply-Air Sensor Input48TC Typical Unit Wiring Diagram Power D08, 208/230-3-60 48TC Typical Unit Wiring Diagram Control D08, 208/230-3-60 START-UP, General PRE-START-UPUnit Preparation Gas PipingRefrigerant Service Ports Internal WiringReturn-Air Filters Outdoor-Air Inlet ScreensSTART-UP, RTU-MP Control Field Service TestVentilation Continuous Fan Perform System Check-OutConfiguration Cooling Lockout Temp Cooling/Econ SAT Low SetptHeating Heating SAT High Setpt Heating Lockout TempT55/56 Override Duration Power Exhaust SetptIAQ Low Reference @ 4mA IAQ High Reference @ 20mAOperating Sequences PremierLinkt Control Supplemental Controls48TC 48TC Number Stages Economizer Available Cooling Stages48TC 48TC Linkage Modes Rooftop Mode Value Linkage ModeAlways Occupied Default Occupancy Loadshed Command Gas and Electric Heat UnitsRTU-MP Sequence of Operation SchedulingBAS On/Off BACnet ScheduleDI On/Off Indoor FanFastener Torque Values Power ExhaustEconomizer Indoor Air QualityTorque Values Model Number Nomenclature Appendix I. Model Number SignificanceSerial Number Format Position Number Typical DesignatesAppendix II. Physical Data Physical Data12.5TONS Physical Data Heating 12.5TONS Heat Anticipator Setting Amps48TC**08 48TC**12 48TC**14 Gas Connection Natural Gas Heat, Liquid Propane HeatCFM RPM BHP Appendix III. FAN Performance579 FAN PerformanceRPM BHP 48TC**14Unit MOTOR/DRIVE Motor Pulley Turns Open Combo Pulley AdjustmentElectrical Information MCA/MOCP Determination no C.O. or Unpwrd C.O Unit Combustion PowerNOM IFM FAN Motor Exhaust No P.E Type DISC. SizeAppendix IV. Wiring Diagram List Wiring DiagramsSize Voltage Control Power Catalog No 48TC-3SM Appendix V. Motormaster Sensor LocationsPreliminary Information Unit START-UP Checklist
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