How do you setup a Touch Screen Programmable Zone Sensor for use with a WSHP?

Attention: This product is not designed for use in a building automation system. It cannot be used on a BACnet/MSTP link connected to a BAS.

Overview Use this guide to setup a SEN02587 Trane® Commercial Touch Screen Programmable Zone Sensor for use with water sourced heat pumps with UC400, Symbio 400, & 500 controls.  Here you will find information on wiring the sensor to the control, sensor configuration, and troubleshooting.

Click the e-library symbol for the complete installation instructions as an aid to this guide. Also see attached PDF.

•   Wiring the sensor to the control

The correct communication wire is required to ensure reliable communication.  Four conductors are required.  See Figure 1 for Trane recommended wire. Keep wire at least 6-12 inches away from high-voltage AC cables, lighting, and variable frequency drives (VFDs) to prevent interference. Remove power from the HVAC equipment and apply electrical lock out/tag out procedures prior to making connections.  See Figure 2 for Symbio 500 & UC400 control to sensor terminations. See Figure 3 for Symbio 400-B control to sensor terminations. You must splice into a factory harness when making connections A, B, and E at the unit control.	Figure 1
Figure 2
Figure 3

• Setting the control address

Remove power from the HVAC equipment and apply electrical lock out/tag out procedures prior to changing address settings. Set the rotary dials to 0-0-1 (Figure 4). You will feel the dial *click* into place. The control orientation in the unit will vary, Figure 4 assumes the control is mounted as shown in Figure 2 or Figure 3. Apply power to the HVAC equipment.

Figure 4

• Programming the sensor

Enter the Configuration Mode by touching the top center location on the display for 2 seconds.	Figure 5
Tap to enter the installer password 4017.	Figure 6
Confirm / Adjust settings as needed.  Sensor Address = 2. This cannot be the same value as the unit address. Unit Address = 1. This value isn't shown on all sensor models. If a value is shown, it needs to match the rotary dial settings on the control and cannot be the same value as the senor address.  Baud Rate = 76800 The status must display online. If offline, see troubleshooting section below.	Figure 7
From the Configuration Mode, go to Service View and scroll until you see Unit Status.  Unit Status must read online.  If offline, see troubleshooting section below.	Figure 8

• Troubleshooting

  After completing each step below, check to see if your status shows online in Network Settings and Service View. If showing offline, proceed to the next step.
  1. Check communication cable wiring. The correct communication wire is required to ensure reliable communication. Re-terminate sensor at unit and sensor to ensure proper connection.
  2. Verify there are no BAS communication wires present and remove them as needed.
  3. Confirm rotary dial value on the equipment controller = 2. Sometimes the dial setting doesn't take. Cycle power off and remove USB as needed. Advance the setting to 3 and return it back to 2 to ensure the dial setting is taking place. Restore power and check for an online status.
  4. Confirm the correct sensor is installed. Enter the Configuration Mode and scroll until you see the Lua menu. The description here needs to mention UC400. This sensor is compatible with units having a UC400, Symbio 400-B, as well as Symbio 500. Check with your local Trane Supply if you need to verify part numbers or need assistance finding the correct one > Store Locator
  5. Remove the sensor from the wall and run a short section of wire from the unit control to the or free air to isolate the field wiring as being an issue. If communication status shows online with the wire run free air, reinstall new field wiring in the building from the unit to the sensor.
  6. Restore the sensor to factory defaults and repeat the steps listed in the Programming the sensor section. To restore the sensor, enter Configuration Mode > Configuration. Scroll until you see Erase All and select Yes. Follow the steps listed in Programming the sensor to reconfigure the device once the reset is complete.
  7. Connect to the control with the web UI > How do you access the Symbio Web UI?  From the Summary screen, select the Identification and Communications button (Figure 9).  Select the Protocol Configuration tab (Figure 10).  Confirm the Current Device ID shows 2. It different, select Edit, select the check box next to Use Software Device ID and enter a value of 2, and select the Save button in the lower right.  Confirm the baud rate shows 76,800. Use the Edit button to change value as needed and select the Save button in the lower right.	Figure 9 Figure 10

WARNING:

Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.