Carrier 50HCQA installation instructions RTU-MP Control System

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RTU-MP Control System

The RTU-MP controller, see Fig. 47, provides expanded stand-alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems (BAS) through popular third-party network systems. The available network systems are BACnet MP/TP, Modbus and Johnson J2. Communication with LonWorks is also possible by adding an accessory interface card to the RTU-MP. Selection of the communication protocol and baud rate are made at on-board DIP switches.

The RTU-MP control is factory-mounted in the 50HCQ unit’s main control box, to the left of the CTB. See Fig. 48. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU-MP sensors will be made at the Phoenix connectors on the RTU-MP board. The factory-installed RTU-MP control includes the supply-air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$er2 package.

Refer to Table 8, RTU-MP Controller Inputs and Outputs for locations of all connections to the RTU-MP board.

50HCQA

C07129

Fig. 47 - RTU-MP Multi-Protocol Control Board

C10228

Fig. 48 - 50HCQ Control Box Component Locations

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing 04 06 Size Units Unit Dimensional Drawing 04 06 Size Unit Plan for Unit LocationProvide Unit Support Plan for Sequence of Unit InstallationInspect unit Roof Curb Details Rig and Place Unit For Units with Accessory Electric HeatersField Fabricate Ductwork Convert to Horizontal and Connect Ductwork when required Rigging Details Positioning on CurbInstall Outside Air Hood Economizer Hood Removal and Setup Factory OptionInstall External Condensate Trap and Line Economizer Hood and Two-Position HoodField Power Supply Make Electrical ConnectionsUnits with Factory-Installed Disconnect Convenience OutletsWeatherproof Cover Installation Factory-Option Thru-Base ConnectionsUnits without Thru-Base Connections Field Control WiringHeat Anticipator Settings ThermostatField Control Wiring Raceway Heater Model NumberTypical Module Installation Single Point Boxes and Supplementary FuseSupply Air Temperature SAT Sensor PremierLink ControllerTypical PremierLink Wiring Schematic Field Connections Outdoor Air Temperature OAT SensorSpace Temperature SPT Sensors EconoMi$ert2Space Thermostat Connections PremierLink Sensor Usage Space Sensor Mode Thermostat ModeEconomizer Controls Indoor CO2 Sensor 33ZCSENCO2 Connections Power Exhaust output Filter Status SwitchSupply Fan Status Switch Space Relative Humidity SensorConnecting CCN bus Color Code Recommendations Recommended CablesRTU-MP Control System Typical RTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs Type of I/O Connection PIN Name Numbers InputsSpace Temperature Sensor Typical Wiring 33ZCT59SPT Connecting Discrete Inputs RTU-MP / Outdoor CO2 Sensor 33ZCSENCO2 ConnectionsCommunication Wiring Protocols GeneralLocal Access RTU-MP TroubleshootingSystem LEDsLEDs on the RTU-MP show the status of certain functions ControllerSmoke Detector Locations Supply AirAdditional Application Data See Completing Installation of Return Air SmokeCompleting Installation of Return Air Smoke Sensor Unit Wire/Fuse or Hacr Breaker Sizing Data STDUnit No P.E 208/230 208/230---3 STD Smoke Detectors Adjust Factory-Installed OptionsEconoMi$er IV Occupancy Switch Install Accessories Pre-Start and Start-UpCatalog No 50HCQ---01SI

50HCQA specifications

The Carrier 50HCQA is a cutting-edge rooftop air conditioning unit designed for commercial applications, combining efficiency, reliability, and advanced technology to ensure optimal indoor climate control. This model stands out in Carrier's extensive range of HVAC solutions, showcasing a blend of innovative features suitable for diverse building types.

One of the key features of the Carrier 50HCQA is its high-efficiency compressor. With variable-speed capabilities, the compressor adjusts its output to meet the precise cooling or heating demands of the space, promoting energy savings and consistent temperature management. This flexibility results in reduced energy consumption, making the 50HCQA an environmentally friendly choice for businesses looking to lower their carbon footprint.

The 50HCQA integrates advanced microprocessor controls, streamlining operation and enhancing user interaction. This technology allows for sophisticated diagnostics, monitoring, and scheduling, giving facility managers the tools they need to optimize system performance. The user-friendly interface ensures that settings can be easily adjusted, and real-time performance metrics can be accessed to ensure efficient operation.

In terms of construction, the Carrier 50HCQA is built with durability in mind. The unit features a robust cabinet design with a galvanized steel construction that is resistant to corrosion. This feature enhances the longevity of the unit, making it suitable for a variety of weather conditions. Additionally, the insulated casing reduces sound levels, providing a quieter operation that is particularly beneficial in noise-sensitive environments.

Another significant characteristic of the 50HCQA is its environmentally responsible refrigerant options. It utilizes R-410A refrigerant, which has a lower Global Warming Potential (GWP) compared to traditional refrigerants. This aspect not only meets regulatory standards but also supports users in making eco-friendly choices in their HVAC systems.

The 50HCQA also supports a range of optional accessories, including economizers for enhanced energy efficiency and improved air quality. This allows for increased outdoor air intake during suitable conditions, which can significantly contribute to enhancing indoor air quality—an essential factor for occupant comfort and health.

In conclusion, the Carrier 50HCQA is an exemplary model in the commercial HVAC sector, delivering powerful performance, advanced control technologies, and robust construction. Its energy-efficient design, user-friendly controls, and eco-conscious refrigerant options make it a top choice for businesses aiming to invest in sustainable and reliable climate control solutions.