Installation Instructions: BACnet Communication Interface for Chillers (BCI2-C)

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual. Strict observance is crucial for personal safety and proper operation.

WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

NOTICE: Indicates a situation that could result in equipment or property-damage only accidents.

Important Environmental Concerns

Discusses the impact of certain chemicals on the ozone layer and Trane's commitment to responsible refrigerant handling.

Important Responsible Refrigerant Practices

Emphasizes the importance of responsible refrigerant practices, technician certification, and adherence to local and federal regulations (e.g., USA's Federal Clean Air Act Section 608).

WARNING: Proper Field Wiring and Grounding Required! Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. Follow NEC and local/state/national electrical codes.

WARNING: Personal Protective Equipment (PPE) Required! Failure to wear proper PPE could result in death or serious injury. Technicians MUST follow precautions in this manual, on tags/labels, and use appropriate PPE (e.g., cut-resistant gloves, safety glasses, hard hat, fall protection, electrical PPE, arc flash clothing). Refer to Safety Data Sheets (SDS) and OSHA guidelines. When working with hazardous chemicals, refer to SDS and OSHA/GHS guidelines. For energized electrical contact risks, use PPE according to OSHA, NFPA 70E, or country-specific requirements.

WARNING: Follow EHS Policies! Failure to follow instructions could result in death or serious injury. Trane personnel must follow company EHS policies. Non-Trane personnel should follow local regulations.

Overview

The BACnet Communication Interface for Chillers (BCI2-C) is a non-programmable communications module that enables HVAC equipment to communicate on a BACnet network. This guide covers BACnet protocol, specifications, installation, mounting, configuration with Tracer TU and TechView software.

Note: TechView functionality is the same as KestrelView.

Parts List

Verify all parts are enclosed before installation. Claims for shipping damage must be filed with the carrier immediately.

Note: One copy of service literature is shipped with each unit.

BACnet Protocol

BACnet (Building Automation and Control Network, ANSI/ASHRAE Standard 135-2004) is a standard for interoperability between building automation systems from different manufacturers. It defines standard objects (data points) with properties and application services for data access and manipulation, enabling client/server communication.

For more information, see "Additional Resources."

BACnet Testing Laboratory (BTL) Certification

The BCI2-I supports the BACnet communication protocol and is designed to meet the BACnet Building Controller (B-BC) profile requirements. Refer to the BTL website (www.bacnetinternational.org) for details.

Specifications, Requirements, and Dimensions

Requirements

Tools and Software

• One Phillips screwdriver
• One 1/8-inch, flat-bladed service screwdriver
• CH530 Main Processor (MP) software: RTWD Version 6.30+, RTAC Version 37.0+, CGAM version 2.00+
• TechView 13.0 SP1 or higher
• Tracer TU 11.6 or higher

Controller Dimensions: The document includes a diagram (Figure 1) illustrating the controller's dimensions. The BCI2-C module is a compact unit designed for mounting within chiller control panels.

Installation

WARNING: Live Electrical Components! Failure to follow electrical safety precautions could result in death or serious injury. Use qualified personnel for live component work.

WARNING: Hazardous Voltage! Failure to disconnect power before servicing could result in death or serious injury. Disconnect all power, follow lockout/tagout, and verify with a voltmeter.

Note: All mounting holes for brackets and DIN rail are pre-drilled.

Installing BCI2-C in the Chiller Control Panel

1. Disconnect all power from the chiller.
2. Open the control panel.
3. Mount the brackets (Part Number 573178900001) to the control panel using two #6-32 x 0.375 Phillips pan head screws (Part Number X25330033100).
4. Use the mounting locations specific to the chiller type (RTWD/RTUD, RTAC, CGAM) as shown in the following diagrams:
   • Figure 2: RTWD/RTUD Mounting Locations - Illustrates bracket placement for RTWD/RTUD chillers.
   • Figure 3: RTAC Mounting Locations - Illustrates bracket placement for RTAC chillers.
   • Figure 4: CGAM Mounting Locations - Illustrates bracket placement for CGAM chillers.
5. Figure 5: BCI2-C link IMC - This diagram shows the BCI2-C module connected to the chiller's Integrated Main Controller (IMC).

Mounting a CGAM Slant BCI2-C

Figure 6: CGAM slant - This diagram illustrates the specific mounting orientation for the BCI2-C on CGAM slant frame chillers.

Configuration

Setting Rotary Dial Address Using Embedded BCI2 Software Tool

The BCI2-C controller does not use physical rotary dials for address setting. A default address is factory-set and labeled on the circuit board. The address can be changed using the embedded BCI2 Service Tool via a web browser.

1. Connect a USB-A to USB-B cable from the laptop to the BCI2-C service port.
2. Open a web browser on the laptop.
3. Navigate to the IP address: 198.80.18.1
4. The BCI2 Service Tool interface will load.
5. Navigate to Installation > Identification and Communication > Protocol Configuration > Edit.
6. Set the device address by typing the new address in the designated field.
7. Optionally, check "Use software device ID" and enter a desired Device ID.
8. Note: All devices are MSTP managers with valid MAC addresses from 001 to 127 for BACnet.

Figure 7: Setting rotary dial address - This visual depicts the software interface within the BCI2 Service Tool where the device address and Device ID are configured.

Connecting and Configuring the BCI2-C with Tracer TU Software

This section details connecting to Tracer TU and configuring the BCI2-C. Ensure Tracer TU Service Tool (Version 11.6 or higher) is installed.

Connecting to Tracer TU

1. Connect the laptop to the BCI2-C controller via USB cable (directly or through a panel USB port).
2. Launch Tracer TU from the desktop icon or Start menu.
3. In the Startup Task Panel, select "Direct Connection (Via USB cable)".
4. Click "Connect". The Unit Summary page will display upon successful connection.

Figure 8: Startup task panel - Shows the initial Tracer TU screen where connection type is selected.

Configuring the BCI2-C

Configuration is done via the TU Controller Settings tab.

1. Select the "Controller Settings" tab.
2. Enter a descriptive name for the controller.
3. Click "Date and Time" to set preferred formats. Save changes. (BCI2-C uses standard BACnet services for time synchronization.)

Figure 10: Date and time screen - Illustrates the interface for setting date and time formats.

4. Click "Protocol" and select the desired Baud Rate from the dropdown list.
5. Click "Controller Units" and select the desired units of measure. Important: Units cannot be changed after the BCI2-C is configured and bound to the CH530. Failure to set units correctly requires restoring factory defaults and reconfiguring.
6. If a software Device ID is needed, check "Use Software Device ID" and enter the BACnet Device ID.
7. Click "Save".

Figure 9: Controller settings screen - Displays the general controller settings interface in Tracer TU.

Clearing the Controller to Reconfigure and Rebind the BCI2-C

This process is necessary if the chiller configuration changes or if different units of measure are required on the BACnet link.

1. Establish connection between Tracer TU and the BCI2-C.
2. Select the "Controller Settings" tab.
3. Click the "Clear Controller" button (located in the upper right-hand portion of the screen).

Figure 11: Clear controller button - Highlights the location of the 'Clear Controller' button in the Tracer TU interface.

4. Confirm the reset in the pop-up window by clicking "Yes".
5. Click "OK" on the confirmation message indicating the controller will reboot. The BCI2-C resets to factory defaults.
6. Reconfigure the BCI2-C following steps 1-7 in "Configuring the BCI2-C."
7. Refer to "Connecting and Configuring the BCI2-C with Tracer TU Software" for binding if necessary.

Connecting and Configuring the BCI2-C with BCI2 Service Tool

This section details configuration using the embedded BCI2 Service Tool via a web browser.

1. Connect a USB-A to USB-B cable from the laptop to the BCI2-C service port.
2. Open a web browser and navigate to 198.80.18.1.
3. The BCI2 Service Tool interface will load.
4. To enter a name: Navigate to Installation > Identification and Communication > Identification > Edit. Enter name, description, and location, then click Save.

   Figure 12: Identification and communications - Shows the BCI2 Service Tool interface for setting identification details.

5. To set time and date: Navigate to Installation > Regional Specifications > Edit. Enter date and time, then click Save.

   Figure 13: Regional specifications - Displays the interface for configuring regional settings like date and time.

6. To clear the BCI2-C controller: Navigate to Tools > Backup and Restore > Clear Controller. Click "Continue" to confirm. The controller will be cleared and ready for new configuration.

   Figure 14: Backup and restore - Illustrates the location of the 'Clear Controller' function within the BCI2 Service Tool.

7. To configure Baud Rate, Rotary address, and Device ID: Navigate to Installation > Identification and Communication > Protocol Configuration > Edit.

   Figure 15: Protocol configuration - Shows the interface for setting BACnet protocol parameters.

8. To change system units: Navigate to Installation > System Units.

   Figure 16: System units - Displays the interface for selecting system units of measure.

Configuring a CH530 for BACnet with TechView Software

The BCI2-C can only be installed in chillers with specific Main Processor (MP) software versions supporting BACnet.

• Required MP Software Versions:
  • RTWD: MP 6.30 or higher and TechView 12.1 SP2 or higher
  • RTAC: MP 37.0 or higher and TechView 12.1 SP2 or higher
  • CGAM: MP 2.00 and TechView 12.1 SP2 or higher

Note: TechView software includes the latest MP software for CH530 products. Download the latest versions from http://www.trane.com/commercial/designanalysis/techview.aspx.

After verifying software versions and ensuring other LLIDs are bound:

1. Restore power to the chiller and connect TechView to the Dynaview.
2. Verify the correct software version.
3. Navigate to the Configuration view and select the "Options" tab.
4. Choose "BACnet Interface" for the BAS communication option.

   Figure 17: Trane Tracer CH530 unit control service tools - Depicts the TechView interface for selecting the BACnet Interface option.

5. Navigate to the Binding View and locate the device in the device setup area.
6. Use the BCI2 Service Tool to activate the BCI2-C for binding. Navigate to Installation > BCI2-C Configuration > Activate for Binding.

   Figure 18: Activate binding - Shows the BCI2 Service Tool interface for initiating the binding process.

7. Select "OK" at the prompt to initiate binding.
8. Note: The "Activate for Binding" button replaces previous methods like a Service Button or magnet. Refer to KestrelView Online Help for detailed binding/unbinding information.

Additional Resources

• BACnet® Communication Interface for Chiller (BCI2-C) For RTWD, RTAC, and CGAM Integration Guide (BAS-SVP055*-EN)
• KestrelView® Service Software, Help online
• Tracer® BACnet® Terminator Installation Instructions (BAS-SVN214*-EN)
• Tracer® TU Help Online
• Tracer TU Service Tool User Guide (BAS-SVU046*-EN)

Note: For further assistance, contact your local Trane sales office.