Carrier 48TC*D08 appendix Convenience Outlets, Non-Powered Type, Unit-Powered Type, Duty Cycle

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CONVENIENCE OUTLETS

 

 

!

WARNING

 

 

 

ELECTRICAL OPERATION HAZARD

 

 

 

Failure to follow this warning could result in personal

 

 

 

injury or death.

 

 

 

 

Units with convenience outlet circuits may use

 

 

 

multiple disconnects. Check convenience outlet for

 

 

 

power status before opening unit for service. Locate

 

 

 

its disconnect

switch, if appropriate, and open it.

 

 

 

Tag-out this switch, if necessary.

 

 

 

 

 

 

 

Two types of convenience outlets are offered on 48TC

 

 

models: Non-powered and unit-powered. Both types

48TC

 

 

provide a 125-volt GFCI (ground-fault circuit-interrupter)

 

duplex receptacle rated at 15-A behind a hinged

 

 

 

 

waterproof access cover, located on the end panel of the

 

 

unit. (See Fig. 16.)

 

 

Pwd-CO Transformer

Conv Outlet

GFCI

Pwd-CO

Fuse

Switch

C08128

Fig. 16 - Convenience Outlet Location

Non-Powered Type

This type requires the field installation of a general-purpose 125-volt 15-A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125-v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Unit-Powered Type

Aunit-mounted transformer is factory-installed to stepdown the main power supply voltage to the unit to 115-v at the duplex receptacle. This option also includes a manual switch with fuse, located in a utility box and mounted on a bracket behind the convenience outlet; access is through the unit’s control box access panel. (See Fig. 16.)

The primary leads to the convenience outlet transformer are not factory-connected. Selection of primary power source is a customer-option. If local codes permit, the transformer primary leads can be connected at the line-side terminals on a unit-mounted non-fused disconnect or circuit-breaker switch; this will provide service power to the unit when the unit disconnect switch or circuit-breaker is open. Other connection methods will result in the convenience outlet circuit being de-energized when the unit disconnect or circuit-breaker is open. (See Fig. 17.)

CO8283

Fig. 17 - Powered Convenience Outlet Wiring

UNIT

CONNECT

PRIMARY

TRANSFORMER

VOLTAGE

AS

CONNECTIONS

TERMINALS

 

 

 

 

208,

240

L1: RED +YEL

H1 + H3

230

L2: BLU + GRA

H2 + H4

 

 

 

 

 

 

 

L1: RED

H1

460

480

Splice BLU + YEL

H2 + H3

 

 

L2: GRA

H4

 

 

 

 

575

600

L1: RED

H1

L2: GRA

H2

 

 

 

 

 

 

Duty Cycle

The unit-powered convenience outlet has a duty cycle limitation. The transformer is intended to provide power on an intermittent basis for service tools, lamps, etc; it is not intended to provide 15-amps loading for continuous duty loads (such as electric heaters for overnight use). Observe a 50% limit on circuit loading above 8-amps (i.e., limit loads exceeding 8-amps to 30 minutes of operation every hour).

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Contents Table of Contents Safety ConsiderationsGeneral Unit Arrangement and AccessWhat to do if you smell gas Routine Maintenance Seasonal MaintenanceSupply Fan Belt-Drive Supply FAN Blower SectionManual Outside Air Hood Screen Adjustable-Pitch Pulley on Motor Supply-Fan Pulley Adjustment BearingsCoil Maintenance and Cleaning Recommendation Periodic Clean Water RinseCooling Condenser CoilRoutine Cleaning of Novation Condenser Coil Surfaces Routine Cleaning of Evaporator Coil SufacesPuronr R-410A Refrigerant Refrigerant System Pressure Access PortsRefrigerant Charge Seatcore Cooling Charging Charts Cooling Charging Charts D08Cooling Charging Charts D12 Cooling Charging Charts D14 Circuit a Cooling Charging Charts D14 Circuit B Cooling Service Analysis Problem Cause RemedyCondenser-Fan Adjustment D08-D12 size Condenser-Fan Adjustment D14 sizeTroubleshooting Cooling System CompressorsNon-Powered Type Unit-Powered TypeConvenience Outlets Duty CycleSmoke Detectors Smoke Detector Locations Typical Supply Air Smoke Detector Sensor LocationCompleting Installation of Return Air Smoke Sensor Fiop Smoke Detector Wiring and ResponseSensor Alarm Test Sensor Alarm Test ProcedureController Alarm Test Sensor and Controller TestsController Alarm Test Procedure Dirty Controller Test ProcedureDirty Sensor Test Procedure To Configure the Dirty Sensor Test OperationDetector Cleaning SD-TRK4 Remote Alarm Test ProcedureRemote Test/Reset Station Dirty Sensor Test Dirty Sensor Test Using an SD-TRK4Troubleshooting Protective Devices Compressor ProtectionControl Circuit GAS Heating SystemFuel Types and Pressures Flue Gas Passageways Combustion-Air BlowerBurners and Igniters Main BurnersCheck Unit Operation and Make Necessary Adjustments Cleaning and AdjustmentLimit Switch LED Indication Error Code Description LED Error Code DescriptionBurner Ignition Orifice Replacement Gas ValveIntegrated Gas Control IGC Board IGC Connections OutputsOrifice Sizes Altitude CompensationOrifice Carrier Drill Drill Size Part Number ElevationTroubleshooting Heating System Minimum Heating Entering Air TemperatureHeating Service Analysis Problem Cause RemedyIGC Board LED Alarm Codes IGCRepairing Novation Condenser Tube Leaks Condenser Coil ServiceReplacing Novation Condenser Coil PREMIERLINKt Control Typical PremierLinkt System Control Wiring Diagram 55 Space Temperature Sensor Wiring Temp ResistanceTB1 Terminal Field Connection Input Signal Space Sensor ModePremierLink Sensor Usage Thermostat Mode 56 Internal ConnectionsLctb Indoor CO2 Sensor 33ZCSENCO2 Connections PremierLink Filter Switch Connection Signal Type CCN BUS Wire CCN Plug PIN Color Number RTU-MP Control SystemRecommended Cables Color Code RecommendationsRTU-MP Multi-Protocol Control Board Typical RTU-MP System Control Wiring Diagram Configurable Inputs RTU-MP Controller Inputs and OutputsPoint Name Type of I/O Connection PIN Name Numbers InputsSpace Temperature SPT Sensors RTU-MP T-55 Sensor ConnectionsRTU-MP / Indoor CO2 Sensor 33ZCSENCO2 Connections Power Exhaust output Connecting Discrete InputsCommunication Wiring Protocols RTU-MP Troubleshooting BACview6 Handheld Connections LEDsTroubleshooting Alarms Alarms BACnet MS/TPModule Status Report Modstat Example Basic Protocol Troubleshooting ModbusManufacture Date Code Name MeaningECONOMI$ER Systems EconoMi$er IV Component LocationsEconoMi$er IV Wiring EconoMi$er IV Input/Output Logic EconoMi$erInputs Outputs Supply Air Temperature SAT Sensor Outdoor Air Lockout SensorEconoMi$er IV Control Modes Outdoor Dry Bulb ChangeoverDifferential Dry Bulb Control Outdoor Enthalpy ChangeoverIndoor Air Quality IAQ Sensor Input Exhaust Setpoint AdjustmentMinimum Position Control Thermostats Damper MovementDemand Control Ventilation DCV CO2 Sensor Standard Settings CO2 Sensor ConfigurationAnalog CO2 DCV Demand Controlled Ventilation and Power Exhaust EconoMi$er IV Sensor UsageEconoMi$er IV Preparation Differential EnthalpyWiring Diagrams EconoMi$er IV Troubleshooting CompletionDCV 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 PRE-START-UP START-UP, GeneralUnit Preparation Gas PipingInternal Wiring Refrigerant Service PortsReturn-Air Filters Outdoor-Air Inlet ScreensField Service Test START-UP, RTU-MP ControlVentilation Continuous Fan Perform System Check-OutConfiguration Cooling/Econ SAT Low Setpt Cooling Lockout TempHeating Heating SAT High Setpt Heating Lockout TempPower Exhaust Setpt T55/56 Override DurationIAQ Low Reference @ 4mA IAQ High Reference @ 20mAOperating Sequences Supplemental Controls PremierLinkt Control48TC 48TC Available Cooling Stages Number Stages Economizer48TC 48TC Rooftop Mode Value Linkage Mode Linkage ModesLoadshed Command Gas and Electric Heat Units Always Occupied Default OccupancyRTU-MP Sequence of Operation SchedulingBACnet Schedule BAS On/OffDI On/Off Indoor FanPower Exhaust Fastener Torque ValuesEconomizer Indoor Air QualityTorque Values Appendix I. Model Number Significance Model Number NomenclatureSerial Number Format Position Number Typical DesignatesPhysical Data Appendix II. Physical Data12.5TONS Heat Anticipator Setting Amps Physical Data Heating 12.5TONS48TC**08 48TC**12 48TC**14 Gas Connection Natural Gas Heat, Liquid Propane HeatAppendix III. FAN Performance CFM RPM BHPFAN Performance 57948TC**14 RPM BHPPulley Adjustment Unit MOTOR/DRIVE Motor Pulley Turns Open ComboElectrical Information Unit Combustion Power MCA/MOCP Determination no C.O. or Unpwrd C.ONOM IFM FAN Motor Exhaust No P.E Type DISC. SizeWiring Diagrams Appendix IV. Wiring Diagram ListSize Voltage Control Power Appendix V. Motormaster Sensor Locations Catalog No 48TC-3SMUnit START-UP Checklist Preliminary Information