50TC

Fan Status

The fan status accessory is a field-installed accessory. This accessory detects when the indoor fan is blowing air. When installing this accessory, the unit must be

configured for fan status by setting MENUConfigInputsinput 3, 5, 8, or 9 to Fan Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Fig. 47 for wire terminations at J5.

Remote Occupancy

The remote occupancy accessory is a field-installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote occupancy by setting MENUConfigInputsinput 3, 5, 8, or 9 to Remote Occupancy and normally open (N/O) or normally closed (N/C).

Also set MENUSchedulesoccupancy source to DI on/off. Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Table 9 for wire terminations at J5.

Space Relative Humidity Sensor - The RH sensor is not used with these 50Hz 50TC models at this time.

Communication Wiring - Protocols

General

Protocols are the communication languages spoken by control devices. The main purpose of a protocol is to communicate information in the most efficient method possible. Different protocols exist to provide different kinds of information for different applications. In the BAS application, many different protocols are used, depending on manufacturer. Protocols do not change the function of a controller; just make the front end user different.

The RTU-MP can be set to communicate on four different protocols: BACnet, Modbus, N2, and LonWorks. Switch 3 (SW3) on the board is used to set protocol and baud rate. Switches 1 and 2 (SW1 and SW2) are used to set the board’s network address. See Fig. 53 for the switch setting per protocol. The 3rd party connection to the RTU-MP is through plug J19.

NOTE: Power must be cycled after changing the SW1-3 switch settings.

Refer to the RTU-MP 3rd Party Integration Guide for more detailed information on protocols, 3rd party wiring, and networking.

SW3 Protocol Selection

PROTOCOL

DS8

DS7

DS6

DS5

DS4

DS3

DS2

DS1

 

 

 

 

 

 

 

 

 

BACnet MS/TP

Unused

OFF

OFF

OFF

ON

OFF

Select Baud

Select Baud

(Master)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Modbus

Unused

OFF

OFF

ON

ON

OFF

Select Baud

Select Baud

(Slave)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N2

Unused

OFF

OFF

OFF

ON

ON

OFF

OFF

(Slave)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LonWorks

Unused

ON

ON

OFF

ON

OFF

OFF

OFF

 

 

 

 

 

 

 

 

 

NOTE:

 

 

 

 

 

 

 

 

DS = Dip Switch

 

 

 

 

 

 

 

 

BACnet MS/TP SW3 example shown

Baud Rate Selections

BAUD RATE

DS2

 

DS1

 

 

 

 

 

 

 

 

9600

OFF

 

OFF

 

 

 

 

 

 

 

 

19,200

ON

 

OFF

 

 

 

 

 

 

 

 

38,400

OFF

 

ON

 

 

 

 

 

 

 

 

76,800

ON

 

ON

 

C07166

 

 

 

 

 

 

 

Fig. 53 - RTU-MP SW3 Dip Switch Settings

 

 

 

32

Page 32
Image 32
Carrier 50TC installation instructions Fan Status, Remote Occupancy, Communication Wiring Protocols General

50TC specifications

The Carrier 50TC is a cutting-edge commercial rooftop unit designed for optimal performance and reliability in a variety of HVAC applications. This unit is particularly well-suited for small to medium-sized facilities that require efficient heating, ventilation, and air conditioning solutions. A hallmark of the Carrier 50TC is its impressive energy efficiency, enabling users to significantly lower their operational costs while maintaining a comfortable indoor environment.

One of the standout features of the Carrier 50TC is its advanced performance technologies. The unit employs a high-efficiency scroll compressor that enhances refrigerant management, allowing for exceptional cooling capacities while minimizing energy consumption. Additionally, the unit is equipped with variable speed fans, which further contribute to its operational efficiency. These fans adjust their speed according to the cooling demands, allowing the system to consume energy only when necessary.

The Carrier 50TC also incorporates an innovative control system that provides intelligent diagnostics and an array of customizable settings. This system helps in monitoring the unit's performance, ensuring maximum efficiency and early detection of potential maintenance issues. Users can easily integrate the unit within their existing building management systems, enhancing overall operational control and streamlining HVAC management procedures.

Durability and ease of maintenance are key characteristics of the Carrier 50TC, designed specifically to withstand harsh weather conditions while providing long-lasting performance. The unit's robust construction includes a powder-coated cabinet, which not only improves its aesthetic appeal but also protects against corrosion, ensuring longevity.

Moreover, the Carrier 50TC is designed with eco-friendliness in mind. It utilizes environmentally friendly refrigerants, aligning with modern regulations aimed at reducing the impact of HVAC systems on the environment. By choosing the Carrier 50TC, businesses can contribute to sustainability efforts while enjoying effective temperature control.

In summary, the Carrier 50TC combines energy efficiency, advanced technologies, and robust design to deliver a reliable HVAC solution for commercial applications. With its smart control system, high-efficiency components, and eco-friendly operation, the Carrier 50TC sets a standard for performance and sustainability in the commercial heating and cooling market.