Carrier 48TC*D08 appendix Linkage Modes, Rooftop Mode Value Linkage Mode

Page 82

48TC

Temperature Compensated Start — This function will run when the controller is in unoccupied state and will calculate early start bias time (SBT) based on space temperature deviation from occupied setpoints in minutes per degree. The following conditions will be met for the function to run:

S Unit is in unoccupied state S Next occupied time is valid S Current time of day is valid

SValid space temperature reading is available (from sensor or linkage thermostat)

S Cool Start Bias (KCOOL) and Heat Bias Start (KHEAT) > 0 in the CONFIG configuration table

The SBT is calculated by one of the following formulas depending on temperature demand:

If SPT > OCSP then SBT = (SPT - OCSP) * KCOOL If SPT < OHSP then SPT = (OHSP - SPT) * KHEAT.

The calculated start bias time can range from 0 to 255 minutes. When SBT is greater than 0 the function will subtract the SBT from the next occupied time to calculate a new start time. When a new start time is reached, the Temperature Compensated Start mode is started. This mode energizes the fan and the unit will operate as though it is in occupied state. Once set, Temperature Compensated Start mode will stay on until the unit returns to occupied state. If either Unoccupied Free Cool or IAQ Pre-Occupancy mode is active when Temperature Compensated Start begins, their mode will end.

Door Switch — The Door Switch function is designed to disable mechanical heating and cooling outputs when the REMOCC contact input is closed (in the ON state) after a programmed time delay. The fan will continue to operate based on the current mode and the ASHRAE 90.1 Supply Fan setting. The delay is programmable from 2 to 20 minutes by setting the Remote Cont/Door Switch decision in the SERVICE table to a value equal to the number of minutes desired. When the contact is open (in the OFF state), the PremierLink controller will resume normal temperature control.

This application is designed for use in schools or other public places where a door switch can be installed to monitor the opening of a door for an extended period of time. The controller will disable mechanical cooling and heating when the door is open for a programmed amount of time.

This function can also be used to monitor a high condensate level switch when installed on a water source heat pump to disable mechanic cooling in case of a plugged evaporator condensate pan drain.

Linkage — The Linkage function in the PremierLink controller is available for applications using a Linkage thermostat or the 3V control system. If using the Linkage thermostat, both the PremierLink controller and the stat must be on the same CCN bus. When used as the air source for a 3V control system, the PremierLink controller is not required to be on the same CCN bus but it is recommended. Linkage will be active when it is initiated from the Linkage thermostat or the 3V Linkage Coordinator through CCN communications and requires no configuration. Only one device can be linked to the PremierLink controller.

Once Linkage is active, the PremierLink controller’s own SPT, temperature setpoints, and occupancy are ignored and the controller will use the information provided by the remote linkage device. The following information will be received from the remote linked device and can be viewed in the maintenance display table:

S Supervisory Element S Supervisory Bus

S Supervisory Block

S Average Occupied Heat Setpoint

S Average Occupied Cool Setpoint

S Average Unoccupied Heat Setpoint

S Average Unoccupied Cool Setpoint S Average Zone Temp

S Average Occupied Zone Temp S Occupancy Status

In return, the PremierLink controller will provide its SAT and operating mode to the linked device.

It will convert its operating modes to Linkage modes. See Table 31.

Table 31 – Linkage Modes

ROOFTOP MODE

VALUE

LINKAGE MODE

Demand Limit

N/A

N/A

Heat

3

Heating

Cool or Free Cooling

4

Cooling

 

 

 

IAQ Control

N/A

N/A

Temp. Compensated

2

Warm ---up

Start Heat

 

 

 

 

 

Temp. Compensated

4

Cooling

Start Cool

 

 

 

 

 

IAQ Purge

6

Pressurization

Occupied

4

Cooling

(Indoor Fan ON)

 

 

 

 

 

Unoccupied Free

5

Unoccupied Free

Cool

Cooling

 

 

 

 

Fire Shutdown

7

Evac

Factory/Field Test

1

Off

Off

1

Off

 

 

 

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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 BearingsCooling Coil Maintenance and Cleaning RecommendationPeriodic Clean Water Rinse 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 RemedyTroubleshooting Cooling System Condenser-Fan Adjustment D08-D12 sizeCondenser-Fan Adjustment D14 size CompressorsConvenience Outlets Non-Powered TypeUnit-Powered Type Duty CycleSmoke Detectors Smoke Detector Locations Typical Supply Air Smoke Detector Sensor LocationCompleting Installation of Return Air Smoke Sensor Fiop Smoke Detector Wiring and ResponseController Alarm Test Sensor Alarm TestSensor Alarm Test Procedure Sensor and Controller TestsDirty Sensor Test Procedure Controller Alarm Test ProcedureDirty Controller Test Procedure To Configure the Dirty Sensor Test OperationRemote Test/Reset Station Dirty Sensor Test Detector CleaningSD-TRK4 Remote Alarm Test Procedure 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 Carrier Drill Drill Size Part Number Orifice SizesAltitude Compensation ElevationHeating Service Analysis Troubleshooting Heating SystemMinimum Heating Entering Air Temperature 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 Recommended Cables Signal Type CCN BUS Wire CCN Plug PIN Color NumberRTU-MP Control System Color Code RecommendationsRTU-MP Multi-Protocol Control Board Typical RTU-MP System Control Wiring Diagram Point Name Configurable InputsRTU-MP Controller Inputs and Outputs 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 Manufacture Date Basic Protocol TroubleshootingModbus Code Name MeaningECONOMI$ER Systems EconoMi$er IV Component LocationsEconoMi$er IV Wiring EconoMi$er IV Input/Output Logic EconoMi$erInputs Outputs EconoMi$er IV Control Modes Supply Air Temperature SAT SensorOutdoor Air Lockout Sensor 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 EconoMi$er IV Preparation DCV Demand Controlled Ventilation and Power ExhaustEconoMi$er IV Sensor Usage Differential EnthalpyDCV Minimum and Maximum Position Wiring DiagramsEconoMi$er IV Troubleshooting Completion 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 Unit Preparation PRE-START-UPSTART-UP, General Gas PipingReturn-Air Filters Internal WiringRefrigerant Service Ports Outdoor-Air Inlet ScreensVentilation Continuous Fan Field Service TestSTART-UP, RTU-MP Control Perform System Check-OutConfiguration Heating Heating SAT High Setpt Cooling/Econ SAT Low SetptCooling Lockout Temp Heating Lockout TempIAQ Low Reference @ 4mA Power Exhaust SetptT55/56 Override Duration IAQ High Reference @ 20mAOperating Sequences Supplemental Controls PremierLinkt Control48TC 48TC Available Cooling Stages Number Stages Economizer48TC 48TC Rooftop Mode Value Linkage Mode Linkage ModesRTU-MP Sequence of Operation Loadshed Command Gas and Electric Heat UnitsAlways Occupied Default Occupancy SchedulingDI On/Off BACnet ScheduleBAS On/Off Indoor FanEconomizer Power ExhaustFastener Torque Values Indoor Air QualityTorque Values Serial Number Format Appendix I. Model Number SignificanceModel Number Nomenclature Position Number Typical DesignatesPhysical Data Appendix II. Physical Data12.5TONS 48TC**08 48TC**12 48TC**14 Gas Connection Heat Anticipator Setting AmpsPhysical Data Heating 12.5TONS 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 NOM IFM FAN Motor Exhaust No P.E Unit Combustion PowerMCA/MOCP Determination no C.O. or Unpwrd C.O 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
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