Carrier 50TCQA System, Controller, LEDs on the RTU-MP show the status of certain functions

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Table 9 – LEDs

 

The LEDs on the RTU-MP show the status of certain functions

 

 

 

If this LED is on...

 

Status is...

 

 

 

Power

 

The RTU MP has power

 

 

 

Rx

 

The RTU MP is receiving data from the network segment

 

 

The RTU MP is transmitting data over the network segment

Tx

 

 

 

The digital output is active

DO#

 

 

 

 

 

The Run and Error LEDs indicate control module and network status

If Run LED shows...

And Error LED shows...

2 flashes per second

Off

 

 

2 flashes per second

2 flashes,

alternating with Run LED

 

2 flashes per second

3 flashes,

then off

 

2 flashes per second

4 flashes,

then pause

 

 

 

2 flashes per second

On

 

 

5 flashes per second

On

 

 

5 flashes per second

Off

 

 

7 flashes per second

7 flashes per second, alternating with

Run LED

 

 

 

14 flashes per second

14 flashes per second,

alternating with Run LED

 

 

 

On

On

 

 

Status is...

Normal

Five minute auto---restart delay after system error

Control module has just been formatted

Two or more devices on this network have the same ARC156 network address

Exec halted after frequent system errors or control programs halted

Exec start---up aborted, Boot is running Firmware transfer in progress, Boot is running

Ten second recovery period after brownout

Brownout

Failure. Try the following solutions:

STurn the RTU---MP off, then on. S Format the RTU---MP.

S Download memory to the RTU---MP. S Replace the RTU---MP.

50TCQA

NOTE: Refer to Form 48-50H-T-2T for complete configuration of RTU-MP, operating sequences and troubleshooting information. Refer to RTU-MP 3rd Party Integration Guide for details on configuration and troubleshooting of connected networks. Have a copy of these manuals available at unit start-up.

SMOKE DETECTORS

Smoke detectors are available as factory-installed options on 50TCQ models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air. Return Air smoke detectors are arranged for vertical return configurations only. All components necessary for operation are factory-provided and mounted. The unit is factory-configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.

Units equipped with factory-optional Return Air smoke detectors require a relocation of the sensor module at unit installation. See “Completing Installation of Return Air Smoke Sensor:” on page 35 for details.

System

The smoke detector system consists of a four-wire controller and one or two sensors. Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building. It is not to be used as a life saving device.

Controller

The controller (see Fig. 58) includes a controller housing, a printed circuit board, and a clear plastic cover. The controller can be connected to one or two compatible duct smoke sensors. The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals. The controller has three LEDs (for Power, Trouble and Alarm) and a manual test/reset button (on the cover face).

Sensor

The sensor (see Fig. 59) includes a plastic housing, a printed circuit board, a clear plastic cover, a sampling tube inlet and an exhaust tube. The sampling tube (when used) and exhaust tube are attached during installation. The sampling tube varies in length depending on the size of the rooftop unit. The clear plastic cover permits visual inspections without having to disassemble the sensor. The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics. Each sensor includes a harness with an RJ45

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Contents Installation Instructions 50TCQA Unit Dimensional Drawing 04 07 Size Units Plan for Unit Location Unit Dimensional Drawing 04 07 Size UnitPlan for Sequence of Unit Installation Inspect unitProvide Unit Support Roof Curb Details Rig and Place Unit Field Fabricate DuctworkInstall Outside Air Hood Ductwork when requiredEconomizer Hood Removal and Setup Factory Option Convert to Horizontal and ConnectDamper Assembly Two Position Damper Hood Removal and Setup Factory OptionEconomizer Hood and Two-Position Hood Install External Condensate Trap and LineMake Electrical Connections Field Power SupplyConvenience Outlets Units with Factory-Installed DisconnectSplice BLU + Factory-Option Thru-Base Connections460 480 H2 + H3 575 600Heat Anticipator Settings Field Control WiringUnits without Thru-Base Connections ThermostatHeater Model Number Electric HeatersTypical Module Installation PremierLink Controller PremierLinkt Factory-OptionPremierLink Wiring Schematic 55 Space Temperature Sensor Wiring Space Thermostat Connections PremierLink Sensor Usage Thermostat Mode Space Sensor ModeEconomizer controls Outside and Return Air Enthalpy Sensor WiringIndoor CO2 Sensor 33ZCSENCO2 Connections PremierLink Filter Switch Connection Color Code Recommendations Recommended Cables2413 or American A22503 Belden 8772 Columbia 02525RTU-MP Multi-Protocol Control Board RTU-MP control systemRTU-MP System Control Wiring Diagram RTU-MP Controller Inputs and Outputs 33ZCT59SPT Economizer controls Space Temperature SPT SensorsFan Status Connecting Discrete Inputs Filter StatusCommunication Wiring Protocols General Power Exhaust outputDS = Dip Switch BACnet MS/TP SW3 example shown Remote OccupancyRTU-MP Troubleshooting Communication LEDs Local AccessController SystemLEDs LEDs on the RTU-MP show the status of certain functionsSmoke Detector Locations Controller AssemblyTypical Return Air Detector Location Completing Installation of Return Air Smoke SensorUnit Wire/MOCP Sizing Data 56/59 Pwrd C.O65/69 74/8044/46 74/7949/52 79/8679/85 61/6455/58 72/7879/84 70/7469/75 43/4684/90 75/7952/54 61/6557/61 47/5070/76 82/9062/66 53/5576/82 88/95Adjust Factory-Installed Options EconoMi$er IV Occupancy SwitchSmoke Detectors Pre-Start and Start-Up Install Accessories50TCQA 50TCQA Catalog No 50TCQ---01SI

50TCQA specifications

The Carrier 50TCQA is a split system air conditioner known for its efficiency, reliability, and innovative technology. Designed for commercial and residential applications, this model provides a solution that combines comfort with cost-effectiveness, making it a popular choice for homeowners and businesses alike.

One of the key features of the Carrier 50TCQA is its impressive SEER (Seasonal Energy Efficiency Ratio) rating, which ensures optimal energy efficiency. This means that users can enjoy lower utility bills while maintaining a comfortable indoor climate. The unit is engineered to perform well even in extreme temperatures, providing effective cooling and heating when needed.

This model employs a scroll compressor, which is known for its durability and quiet operation. The compressor's design allows for smoother operation and reduced noise levels, making it suitable for use in noise-sensitive environments. Additionally, the 50TCQA is equipped with a multi-speed fan, allowing for adjustable airflow to match the specific comfort requirements of different spaces.

The Carrier 50TCQA utilizes advanced refrigerant technology, specifically the environmentally friendly R-410A refrigerant. This refrigerant helps to reduce greenhouse gas emissions and provides efficient cooling without depleting the ozone layer. The unit's design is also focused on minimizing refrigerant leaks, ensuring environmental safety and reliability over the long term.

Ease of installation and maintenance is another significant characteristic of the Carrier 50TCQA. The unit features a compact and lightweight design, making it easier for technicians to install and service. Moreover, the system is equipped with diagnostic capabilities that allow for quick identification of issues, enhancing service efficiency and reducing downtime.

In terms of control, the Carrier 50TCQA offers a sophisticated thermostat option that includes programmable settings. Users can easily set desired temperatures, timers, and operating modes, ensuring optimal comfort throughout the day and night.

Overall, the Carrier 50TCQA presents a robust solution for climate control needs. With its energy-efficient performance, advanced technologies, and user-friendly features, it embodies Carrier's commitment to providing high-quality heating and cooling solutions that cater to modern lifestyle requirements. This model stands out as an excellent option for those looking to invest in a reliable HVAC system that enhances comfort while being mindful of energy consumption and environmental considerations.
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