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Johnson Controls TEC2645-4 - User Manual

Johnson Controls TEC2645-4
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1TEC Series BACnet® MS/TP Network Temperature and Humidity Controllers
Technical Bulletin
Refer to the QuickLIT Web site for the most up-to-date version of this document.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting the MS/TP Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
MS/TP Controller Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Adding a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Adding Point Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
MS/TP Bus Objects Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers . . . . . . . . . . . . . . 11
TEC2645-4 Thermostat Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TEC26x7-4 and TEC26x7-4+PIR Series Thermostat Controllers . . . . . . . . . . . . . . . . . 22
TEC2601-4 and TEC2601-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 26
TEC2602-4 and TEC2602-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 29
TEC2603-4 and TEC2603-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 33
TEC2613-4 and TEC2613-4+PIR Temperature and Humidity Controllers . . . . . . . . . . 37
TEC2604-4 and TEC2604-4+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . 41
TEC262xx-0+PIR Thermostat Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
TEC Series BACnet® MS/TP Network Temperature and
Humidity Controllers
Technical Bulletin
Code No. LIT-12011592
Issued March 4, 2013
Supersedes May 13, 2011

Table of Contents

Questions and Answers

  • D
    David WoodJul 31, 2025
    Why is my Johnson Controls Thermostat performance so poor?
    • W
      williamsjacobJul 31, 2025
      Poor performance of your Johnson Controls Thermostat can stem from several factors. It could be due to excessive bus traffic, a baud rate that is set too low, or simply too many devices operating on the network. Unaccounted devices not mapped to the NAE or unusually slow devices can also contribute to this issue.
  • L
    lisa83Aug 15, 2025
    Why Johnson Controls TEC2645-4 Thermostat controller does not come online?
    • S
      sharon27Aug 15, 2025
      If your Johnson Controls Thermostat controller does not come online, one reason might be that the controller is connected to the wrong bus. Alternatively, the baud rate specified in the new controller might be incompatible with the running network. If no device on the network is configured to use a specific baud rate, set the baud rate in the bus supervisor and set all other devices to auto baud.

Summary

Introduction to TEC Series Controllers

Related Documentation for TEC Series Controllers

Product Overview of TEC Series Controllers

Connecting the MS;TP Bus

MS;TP Controller Mapping Procedure

Preparation for MS;TP Controller Mapping

Steps to prepare before mapping a controller to an NAE.

Adding a Controller to the NAE

Procedure to add a controller device to the Network Automation Engine.

Adding Point Objects to NAE

Procedure for mapping point objects from controller to NAE.

Troubleshooting TEC Series MS;TP Controllers

TEC26 x6(H)-4 and TEC26 x6 H-4+PIR Series MS;TP Bus Objects

TEC2645-4 MS;TP Bus Objects

TEC26 x7-4 and TEC26 x7-4+PIR Series MS;TP Bus Objects

TEC2601-4 and TEC2601-4+PIR MS;TP Bus Objects

TEC2602-4 and TEC2602-4+PIR MS;TP Bus Objects

TEC2603-4 and TEC2603-4+PIR MS;TP Bus Objects

TEC2613-4 and TEC2613-4+PIR MS;TP Bus Objects

TEC2604-4 and TEC2604-4+PIR MS;TP Bus Objects

TEC26 xx-0+PIR MS;TP Bus Objects

Johnson Controls TEC2645-4 Specifications

General IconGeneral
Temperature Range32°F to 122°F (0°C to 50°C)
Power Supply24 VAC
DisplayBacklit LCD
Dimensions4.7 in. high x 2.8 in. wide x 1.1 in. deep (119 mm high x 72 mm wide x 28 mm deep)
OutputRelay
MountingWall Mount
ProgrammableYes
Hold FunctionYes
TypeElectronic
Control4 Heat / 2 Cool
InputsTemperature Sensor
Outputs1

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