Carrier 50TCA04-A07 appendix Indoor CO2 Sensor 33ZCSENCO2 Connec, Tions

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IAQ Sensor

TB1

PL

 

 

 

 

 

 

 

 

 

 

 

SEN

9

 

J5-5

 

 

 

 

 

 

 

 

 

 

 

 

TB1

J5-6

 

 

 

 

 

 

 

 

 

 

 

COM

7

 

 

 

 

 

24 VAC

 

 

 

 

 

 

 

 

 

 

 

C08274

 

Fig. 44 - Indoor CO2 Sensor (33ZCSENCO2) Connec-

 

 

 

 

 

 

tions

 

 

Refer to Form 33CS-58SI, PremierLink Installation,

 

Start-up, and Configuration Instructions, for detailed

 

configuration information

 

 

 

 

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus

 

weatherproof enclosure) — The outdoor air CO2 sensor is

 

designed to monitor carbon dioxide (CO2) levels in the

 

50TC

outside ventilation air and interface with the ventilation

damper in an HVAC system. The OAQ sensor is packaged

 

 

with an outdoor cover. See Fig. 45. The outdoor air CO2

 

sensor must be located in the economizer outside air hood.

 

COVER REMOVED

SIDE VIEW

C07135

Fig. 45 - Outdoor Air Quality Sensor Cover

Wiring the Outdoor Air CO2 Sensor — A dedicated power supply is required for this sensor. A two-wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 43. Connect the 4 to 20 mA terminal to 50TC’s terminal TB1-11. Connect the SIG COM terminal to 50TC’s terminal TB1-13. See Fig. 461.

OAQ Sensor/RH Sensor

TB1PL SEN 13 J5-2

TB1

COM 11 J5-3

24 VAC

C08275

Fig. 46 - Outdoor CO2 Sensor Connections

Refer to Form 33CS-58SI, PremierLink Installation, Start-up, and Configuration Instructions, for detailed configuration information.

Smoke Detector/Fire Shutdown (FSD) — This function is available only when PremierLink is configured for (Space) Sensor Mode. The unit is factory-wired for PremierLink FSD operation when PremierLink is factory-installed.

On 50TC units equipped with factory-installed Smoke Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s LCTB input. The FSD function is initiated via the smoke detector’s Alarm NO contact set. The PremierLink communicates the smoke detector’s tripped status to the CCN building control. See Fig. 23 for unit smoke detector wiring.

Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit.

If the PremierLink mode has been changed to Thermostat, disconnect the BLU lead (from LCTB DDC-1) at TB1-6 (Y2) and tape off before connecting the thermostat to TB1.

Filter Status Switch — This function is available only when PremierLink is configured for (Space) Sensor Mode.

PremierLink control can monitor return filter status in two ways: By monitoring a field-supplied/installed filter pressure switch or via supply fan runtime hours.

Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to LCTB’s THERMOSTAT-R terminal. Connect the other side of the NO contact set to TB1-10. Setpoint for Dirty Filter is set at the switch. See Fig. 47.

Filter Switch (NO, close on rising pressure (high drop))

LCTB

Thermostat

R

TB1PL

10 J4-4

C08216

Fig. 47 - PremierLink Filter Switch Connection

When the filter switch’s NO contact set closes as filter pressure drop increases (indicating dirt-laden filters), the input signal to PremierLink causes the filter status point to read “DIRTY”.

Using Filter Timer Hours: Refer to Form 33CS-58SI for instructions on using the PremierLink Configuration screens and on unit alarm sequence.

Supply Fan Status Switch — The PremierLink control can monitor supply fan operation through a field-supplied/installed differential pressure switch. This

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Contents Table of Contents Safety ConsiderationsSeasonal Maintenance Unit Arrangement and AccessRoutine Maintenance GeneralSupply FAN Blower Section Supply Fan Belt-DriveAdjustable-Pitch Pulley on Motor Supply-Fan Pulley Adjustment BearingsCondenser Coil Maintenance and Cleaning Recommendation CoolingCondenser Coil Cleaning Condenser Coil Two-Row CoilsEvaporator Coil Refrigerant System Pressure Access PortsPuronr R-410A Refrigerant Refrigerant ChargeTo Use Cooling Charging Charts CoreMax Access Port AssemblyCooling Charging Charts Cooling Charging ChartsCooling Charging Charts Filter Drier Troubleshooting Cooling SystemCompressor Condenser-Fan LocationCooling Service Analysis Problem Cause RemedyConvenience Outlets Smoke DetectorsSystem ControllerSensor Completing Installation of Return Air Smoke Sensor Smoke Detector LocationsFiop Smoke Detector Wiring and Response Return Air Sensor Operating PositionDirty Controller Test Sensor and Controller Tests Sensor Alarm TestController Alarm Test Dirty Sensor TestCleaning the Smoke Detector Detector CleaningRemote Test/Reset Station Dirty Sensor Test Changing the Dirt Sensor TestDetector Indicators IndicatorsAlarm State Control or Indicator DescriptionTroubleshooting Protective DevicesControl Circuit Electric HeatersRelief Device Condenser Fan Motor ProtectionCompleting Heater Installation Typical Single Point InstallationPremierlinkt Control PremierLink ControllerPremierLink Wiring Schematic 55 Space Temperature Sensor Wiring Temp ResistanceTemperature Enthalpy Sensor PremierLink Sensor UsageOutdoor AIR Return AIR Field Connection Input Signal Space Sensor ModeThermostat Mode TB1 Terminal Field Connection Input SignalLctb Outside and Return Air Enthalpy Sensor Wiring Indoor CO2 Sensor 33ZCSENCO2 Connec TionsColor Code Recommendations CCN BUS Wire CCN Plug PIN Color NumberRecommended Cables ManufacturerEconomizer Systems PremierLink CCN Bus ConnectionsInputs Outputs RUNOutdoor Air Lockout Sensor Supply Air Temperature SAT SensorEconoMi$er EconoMi$er IV Control ModesDifferential Dry Bulb Control Outdoor Enthalpy ChangeoverEnthalpy Changeover Setpoints Indoor Air Quality IAQ Sensor InputDamper Movement Exhaust Setpoint AdjustmentMinimum Position Control ThermostatsCO2 Sensor Configuration Demand Control Ventilation DCVEconoMi$er IV Sensor Usage Differential Enthalpy DCV Demand Controlled Ventilation and Power ExhaustEconoMi$er IV Preparation Single EnthalpyWiring Diagrams EconoMi$er IV Troubleshooting CompletionPRE-START-UP START-UP, General START-UP, Premierlink ControlsInitial Operation and Test Memory ResetPerform System Check-Out Operating Sequence, Base Unit ControlsOperating Sequence, PremierLink Control 50TC Available Cooling Stages Number Stages EconomizerOAT ≤ SPT 50TC 50TC Loadshed Command Gas and Electric Heat Units Fastener Torque ValuesLinkage Modes 50TC Typical Unit Wiring diagram Power A06 Torque Values50TC Unit Wiring Diagram Control A06 Serial Number Format Appendix I. Model Number SignificanceModel Number Nomenclature Position Number Typical DesignatesAppendix II. Physical Data Physical Data Cooling TonsAppendix III. FAN Performance General Fan Performance NotesTon Horizontal Supply Ton Vertical SupplyCFM RPM BHP Standard Static Option 5541215 11701165 1225 120650TC**05 Phase Ton Horizontal Supply 724 765Phase Ton Horizontal Supply 923 1019 822 927 1018872 973 1061 974 1067Pulley Adjustment Unit MOTOR/DRIVE Motor Pulley Turns Open ComboAppendix IV. Electrical Data Appendix IV. Electrical Data FLAMCA/MOCP Determination no C.O. or Unpwrd C.O MCA/MOCP Determination no C.O. or Unpwrd C.O. 78/89152 159 Appendix V. Wiring Diagram List Wiring DiagramsAppendix VI. Motormaster Sensor Locations 50TC*A04 Outdoor CircuitingAppendix VI. cont Motormaster Sensor Locations Catalog No 50TC---1SM START-UP Checklist Pressures Cooling ModeRemove and Store in Job File

50TCA04-A07 specifications

The Carrier 50TCA04-A07 is a prominent model from Carrier, a leader in the heating, ventilation, and air conditioning (HVAC) industry. Designed for commercial applications, this unit exemplifies advanced technology and reliability, catering to a wide array of cooling needs.

One of the most notable features of the Carrier 50TCA04-A07 is its high efficiency. With a cooling capacity that suits various settings, it is engineered to provide excellent performance with minimal energy consumption. The unit achieves impressive Seasonal Energy Efficiency Ratio (SEER) ratings, which not only reduce operational costs but also lower the environmental impact.

The Carrier 50TCA04-A07 employs state-of-the-art inverter technology. This innovation allows the compressor to operate at varying speeds, adjusting its output according to the cooling demand. Consequently, the system can maintain optimal comfort levels while using less energy. Additionally, the inverter technology contributes to quieter operation, making it a suitable choice for environments where noise is a concern.

Durability is a hallmark of the Carrier 50TCA04-A07. Constructed with robust materials, this model is designed to withstand harsh conditions and ensure long-term reliability. The unit is equipped with corrosion-resistant components, extending its lifespan and maintaining performance quality over time.

Another significant characteristic of the Carrier 50TCA04-A07 is its advanced control system. The integrated control panel provides easy access to performance settings and monitoring capabilities. Users can effortlessly adjust temperatures and modes, ensuring a customizable climate. Furthermore, compatibility with smart building management systems enhances operational efficiency and real-time monitoring.

Regarding safety features, the Carrier 50TCA04-A07 is equipped with multiple sensors and automated responses to prevent overheating and ensure safe operation. These safety mechanisms not only protect the unit but also contribute to the overall safety of the installation environment.

In summary, the Carrier 50TCA04-A07 is a highly efficient, durable, and technologically advanced HVAC solution for commercial spaces. Its innovative features, including inverter technology, robust construction, and smart control systems, set it apart in the market, making it a reliable choice for businesses seeking to optimize their climate control needs while minimizing energy consumption and operational costs.
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