Carrier 50TCA04-A07 appendix Lctb

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Connect T-56 - See Fig. 38 for T-56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T-56 terminals to TB1 terminals 1, 3 and 5 (see Fig. 39).

1

2

3

4

5

6

RED(+)

 

 

 

 

 

 

WHT(GND)

CCN COM

 

 

 

 

 

 

BLK(-)

 

 

 

 

 

 

 

 

 

 

SEN

 

SET

 

 

 

SW1

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(T56)

 

PremierLink Configuration screen for Operating Mode. Default setting is Sensor Mode (value 1). Change the value to 0 to reconfigure the controller for Thermostat Mode.

When the PremierLink is configured for Thermostat Mode, these functions are not available: Fire Shutdown (FSD), Remote Occupied (RMTOCC), Compressor Safety (CMPSAFE), Supply Fan Status (SFS), and Filter Pressure Switch (FILTER).

Economizer controls —

Outdoor Air Enthalpy Control (PNO HH57AC077) -

The enthalpy control (HH57AC077) is available as a

BRN (GND)

BLU (SPT)

50TC

Cool Warm

SENSOR WIRING

JUMPER

TERMINALS

AS SHOWN

C08202

field-installed accessory to be used with the EconoMi$er2 damper system. The outdoor air enthalpy sensor is part of the enthalpy control. (The separate field-installed accessory return air enthalpy sensor (HH57AC078) is required for differential enthalpy control. See below.)

Locate the enthalpy control in the economizer hood. Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3. See Fig.

Fig. 38 - T-56 Internal Connections

 

TB1

PL

SEN

1

J6-7

 

TB1

PL

SEN

3

J6-6

Jumper

SET

SET 5 J6-5

C08213

Fig. 39 - PremierLink T56 Sensor

Connect Thermostat — A 7-wire thermostat connection requires a 24-v power source and a common connection. Use the R and C terminals on the LCTB’s THERMOSTAT connection strip for these. Connect the thermostat’s Y1, Y2, W1, W2 and G terminals to PremierLink TB1 as shown in Fig. 40.

If the 50TC unit is equipped with factory-installed smoke detector(s), disconnect the factory BLU lead at TB1-6 (Y2) before connecting the thermostat. Identify the BLU lead originating at LCTB DDC-1; disconnect at TB1-6 and tape off. Confirm that the second BLU lead at TB1-6 remains connected to PremierLink J4-8.

If the 50TC unit has an economizer system and free-cooling operation is required, a sensor representing Return Air Temperature must also be connected (field-supplied and installed). This sensor may be a T-55 Space Sensor (see Fig. 36) installed in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct. Connect this sensor to TB1-1 and TB1-3 per Fig. 37. Temperature-resistance characteristic is found in Table 5.

Configure the unit for Thermostat Mode — Connect to the CCN bus using a CCN service tool and navigate to

41.Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to TR) and BLK (connect to TR).

SPACELCTB

THERMOSTAT THERMOSTAT

R

R

 

 

TB1

PL

 

 

G

2

J4-12

Y1 4 J4-10

Y2 6 J4-8

W1 8 J4-6

W2 10 J4-4

C

C

LCTB

 

 

THERMOSTAT

 

 

C08119

Fig. 40 - Space Thermostat Connections

Enthalpy

 

LCTB

 

ECON

Switch

 

 

 

2

GRA

6

3

GRA

7

 

Factory Wiring Harness

 

 

C08218

Fig. 41 - Enthalpy Switch (HH57AC077) Connections

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

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Contents Table of Contents Safety ConsiderationsUnit Arrangement and Access Routine MaintenanceSeasonal Maintenance GeneralSupply FAN Blower Section Supply Fan Belt-DriveAdjustable-Pitch Pulley on Motor Supply-Fan Pulley Adjustment BearingsCooling Condenser Coil Maintenance and Cleaning RecommendationCondenser Coil Cleaning Condenser Coil Two-Row CoilsRefrigerant System Pressure Access Ports Puronr R-410A RefrigerantEvaporator Coil Refrigerant ChargeTo Use Cooling Charging Charts CoreMax Access Port AssemblyCooling Charging Charts Cooling Charging ChartsCooling Charging Charts Troubleshooting Cooling System CompressorFilter Drier Condenser-Fan LocationCooling Service Analysis Problem Cause RemedyConvenience Outlets Smoke DetectorsController SystemSensor Completing Installation of Return Air Smoke Sensor Smoke Detector LocationsFiop Smoke Detector Wiring and Response Return Air Sensor Operating PositionSensor and Controller Tests Sensor Alarm Test Controller Alarm TestDirty Controller Test Dirty Sensor TestDetector Cleaning Remote Test/Reset Station Dirty Sensor TestCleaning the Smoke Detector Changing the Dirt Sensor TestIndicators Alarm StateDetector Indicators Control or Indicator DescriptionTroubleshooting Protective DevicesElectric Heaters Relief DeviceControl Circuit Condenser Fan Motor ProtectionCompleting Heater Installation Typical Single Point InstallationPremierlinkt Control PremierLink ControllerPremierLink Wiring Schematic 55 Space Temperature Sensor Wiring Temp ResistancePremierLink Sensor Usage Temperature Enthalpy SensorOutdoor AIR Return AIR Space Sensor Mode Thermostat ModeField Connection Input Signal TB1 Terminal Field Connection Input SignalLctb Outside and Return Air Enthalpy Sensor Wiring Indoor CO2 Sensor 33ZCSENCO2 Connec TionsCCN BUS Wire CCN Plug PIN Color Number Recommended CablesColor Code Recommendations ManufacturerEconomizer Systems PremierLink CCN Bus ConnectionsInputs Outputs RUNSupply Air Temperature SAT Sensor EconoMi$erOutdoor Air Lockout Sensor EconoMi$er IV Control ModesDifferential Dry Bulb Control Outdoor Enthalpy ChangeoverEnthalpy Changeover Setpoints Indoor Air Quality IAQ Sensor InputExhaust Setpoint Adjustment Minimum Position ControlDamper Movement ThermostatsDemand Control Ventilation DCV CO2 Sensor ConfigurationEconoMi$er IV Sensor Usage DCV Demand Controlled Ventilation and Power Exhaust EconoMi$er IV PreparationDifferential Enthalpy Single EnthalpyEconoMi$er IV Troubleshooting Completion Wiring DiagramsPRE-START-UP START-UP, General START-UP, Premierlink ControlsMemory Reset Perform System Check-OutInitial Operation and Test Operating Sequence, Base Unit ControlsOperating Sequence, PremierLink Control 50TC Available Cooling Stages Number Stages EconomizerOAT ≤ SPT 50TC 50TC Fastener Torque Values Loadshed Command Gas and Electric Heat UnitsLinkage Modes 50TC Typical Unit Wiring diagram Power A06 Torque Values50TC Unit Wiring Diagram Control A06 Appendix I. Model Number Significance Model Number NomenclatureSerial Number Format Position Number Typical DesignatesAppendix II. Physical Data Physical Data Cooling TonsAppendix III. FAN Performance General Fan Performance NotesTon Vertical Supply Ton Horizontal SupplyCFM RPM BHP Standard Static Option 5541170 1165 12251215 120650TC**05 Phase Ton Horizontal Supply 724 765Phase Ton Horizontal Supply 822 927 1018 872 973 1061923 1019 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 Pressures Cooling Mode START-UP ChecklistRemove 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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