Carrier 50TCA04-A07 appendix Supply FAN Blower Section, Supply Fan Belt-Drive

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located on the rear side of the unit, above the evaporator/return air access panel. (See Fig. 1.)

To remove the filters:

1.Grasp the bottom flange of the upper panel.

2.Lift up and swing the bottom out until the panel dis- engages and pulls out.

3.Reach inside and extract the filters from the filter rack.

4.Replace these filters as required with similar replace- ment filters of same size.

To re-install the access panel:

1.Slide the top of the panel up under the unit top panel.

2.Slide the bottom into the side channels.

3.Push the bottom flange down until it contacts the top of the lower panel (or economizer top).

IMPORTANT: DO NOT OPERATE THE UNIT WITHOUT THESE FILTERS!

Outside Air Hood

Outside air hood inlet screens are permanent aluminum-mesh type filters. Check these for cleanliness. Remove the screens when cleaning is required. Clean by washing with hot low-pressure water and soft detergent and replace all screens before restarting the unit. Observe the flow direction arrows on the side of each filter frame.

Economizer Inlet Air Screen

This air screen is retained by spring clips under the top edge of the hood. (See Fig. 3.)

17 1/4”

DIVIDER

OUTSIDE

AIR

HOOD

CLEANABLE

ALUMINUM FILTER FILTER

BAROMETRIC RELIEF

FILTER

CLIP

C06027

Fig. 3 - Filter Installation

To remove the filter, open the spring clips. Re-install the filter by placing the frame in its track, then closing the spring clips.

Manual Outside Air Hood Screen

This inlet screen is secured by a retainer angle across the top edge of the hood. (See Fig. 4.)

C07156

Fig. 4 - Screens Installed on Outdoor-Air Hood

(Sizes 7-1/2 to 12-1/2 Tons Shown)

To remove the screen, loosen the screws in the top retainer and slip the retainer up until the filter can be removed. Re-install by placing the frame in its track, rotating the retainer back down and tighten all screws.

C07087

Fig. 5 - Belt Drive Motor Mounting

SUPPLY FAN (BLOWER) SECTION

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on the fan system, shut off all unit power and tag-out the unit disconnect switch. Do not reach into the fan section with power still applied to unit.

Supply Fan (Belt-Drive)

The supply fan system consists of a forward-curved centrifugal blower wheel on a solid shaft with two concentric type bearings, one on each side of the blower housing. A fixed-pitch driven pulley is attached to the fan shaft and an adjustable-pitch driver pulley is on the motor. The pulleys are connected using a “V” type belt. (See Fig. 5.)

Belt

Check the belt condition and tension quarterly. Inspect the belt for signs of cracking, fraying or glazing along the

50TC

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Contents Safety Considerations Table of ContentsGeneral Unit Arrangement and AccessRoutine Maintenance Seasonal MaintenanceSupply Fan Belt-Drive Supply FAN Blower SectionSupply-Fan Pulley Adjustment Bearings Adjustable-Pitch Pulley on MotorCondenser Coil Maintenance and Cleaning Recommendation CoolingCondenser Coil Two-Row Coils Cleaning Condenser CoilRefrigerant Charge Refrigerant System Pressure Access PortsPuronr R-410A Refrigerant Evaporator CoilCoreMax Access Port Assembly To Use Cooling Charging ChartsCooling Charging Charts Cooling Charging ChartsCooling Charging Charts Condenser-Fan Location Troubleshooting Cooling SystemCompressor Filter DrierProblem Cause Remedy Cooling Service AnalysisSmoke Detectors Convenience OutletsSystem ControllerSensor Smoke Detector Locations Completing Installation of Return Air Smoke SensorReturn Air Sensor Operating Position Fiop Smoke Detector Wiring and ResponseDirty Sensor Test Sensor and Controller Tests Sensor Alarm TestController Alarm Test Dirty Controller TestChanging the Dirt Sensor Test Detector CleaningRemote Test/Reset Station Dirty Sensor Test Cleaning the Smoke DetectorControl or Indicator Description IndicatorsAlarm State Detector IndicatorsProtective Devices TroubleshootingCondenser Fan Motor Protection Electric HeatersRelief Device Control CircuitTypical Single Point Installation Completing Heater InstallationPremierLink Controller Premierlinkt ControlPremierLink Wiring Schematic Temp Resistance 55 Space Temperature Sensor WiringTemperature Enthalpy Sensor PremierLink Sensor UsageOutdoor AIR Return AIR TB1 Terminal Field Connection Input Signal Space Sensor ModeThermostat Mode Field Connection Input SignalLctb Outside and Return Air Enthalpy Sensor Wiring Tions Indoor CO2 Sensor 33ZCSENCO2 ConnecManufacturer CCN BUS Wire CCN Plug PIN Color NumberRecommended Cables Color Code RecommendationsPremierLink CCN Bus Connections Economizer SystemsRUN Inputs OutputsEconoMi$er IV Control Modes Supply Air Temperature SAT SensorEconoMi$er Outdoor Air Lockout SensorOutdoor Enthalpy Changeover Differential Dry Bulb ControlIndoor Air Quality IAQ Sensor Input Enthalpy Changeover SetpointsThermostats Exhaust Setpoint AdjustmentMinimum Position Control Damper MovementCO2 Sensor Configuration Demand Control Ventilation DCVEconoMi$er IV Sensor Usage Single Enthalpy DCV Demand Controlled Ventilation and Power ExhaustEconoMi$er IV Preparation Differential EnthalpyWiring Diagrams EconoMi$er IV Troubleshooting CompletionPRE-START-UP START-UP, Premierlink Controls START-UP, GeneralOperating Sequence, Base Unit Controls Memory ResetPerform System Check-Out Initial Operation and TestOperating Sequence, PremierLink Control 50TC Number Stages Economizer Available Cooling StagesOAT ≤ SPT 50TC 50TC Loadshed Command Gas and Electric Heat Units Fastener Torque ValuesLinkage Modes Torque Values 50TC Typical Unit Wiring diagram Power A0650TC Unit Wiring Diagram Control A06 Position Number Typical Designates Appendix I. Model Number SignificanceModel Number Nomenclature Serial Number FormatPhysical Data Cooling Tons Appendix II. Physical DataGeneral Fan Performance Notes Appendix III. FAN PerformanceTon Horizontal Supply Ton Vertical SupplyCFM RPM BHP 554 Standard Static Option1206 11701165 1225 121550TC**05 Phase Ton Horizontal Supply 765 724Phase Ton Horizontal Supply 974 1067 822 927 1018872 973 1061 923 1019Unit MOTOR/DRIVE Motor Pulley Turns Open Combo Pulley AdjustmentAppendix IV. Electrical Data FLA Appendix IV. Electrical DataMCA/MOCP Determination no C.O. or Unpwrd C.O 78/89 MCA/MOCP Determination no C.O. or Unpwrd C.O.152 159 Wiring Diagrams Appendix V. Wiring Diagram List50TC*A04 Outdoor Circuiting Appendix VI. Motormaster Sensor LocationsAppendix 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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