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Johnson Controls TEC3312-14 - User Manual

Johnson Controls TEC3312-14
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TEC3000 Series Proportional Fan Coil
Thermostats Installation Guide
Applications
The networked TEC3000 Series Thermostat Controllers
are stand-alone and field-selectable BACnet
®
MS/TP or
N2 networked devices. Wireless networked models of the
TEC3000 Series Thermostat Controller are also available.
Proportional Fan Coil and Individual Zone Thermostat
Controllers provide control of the following:
Local hydronic reheat valves
Pressure-dependent variable air volume (VAV)
equipment with or without local reheat
Two- or four-pipe fan coils
Cabinet unit heaters
Other individual zone equipment using an on/off or
floating control input
The networked models feature a field-selectable
Building Automation System (BAS) BACnet MS/TP or N2
communication capability that enables remote monitoring
and programming for efficient space temperature control.
The wireless models (TEC30xx-xx-000) are compatible
only with the WNC1800/ZFR182x Pro Series Wireless Field
Bus System that enables communication with a building
automation system (BAS). The new wireless models
(TEC31xx-14-000) are compatible only with WRG1830/
ZFR183x Pro Series Wireless Field Bus System. All models
include a USB port configuration that reduces installation
time to allow simple backup and restore features from a
USB drive, which enables rapid cloning of configuration
between similar units.
Some models have occupancy sensing capability built into
the device. These thermostat controllers maximize up to
30% energy savings in high-energy usage commercial
buildings, such as schools and hotels, during occupied
times by using additional standby setpoints.
All models feature an intuitive onboard touchscreen UI
with backlit display that makes setup and operation quick
and easy. For Single-or Two-Stage Economizer Thermostat
Controller models, only the single-speed fan configuration
is supported. For TEC3x1x and TEC3x2x models, multiple
fan configurations are supported for fan coil equipment
types, as follows:
Single-speed
Multi-speed (two or three discrete speeds)
Variable-speed/EC motors (0 to 10 VDC control)
Some models support dehumidification on two-pipe
fan coil units with reheat, and four-pipe fan coil units
with or without reheat. When no heating is required,
the thermostat controller monitors space humidity and
activates dehumidification control as necessary. Heat
and/or reheat is used as required to maintain the space
temperature. For optimal dehumidification performance,
use a fan coil unit that has a multi-speed or variable-speed
fan (VSF).
Important: The TEC3000 Series Thermostat
Controller is intended to provide an input to
equipment under normal operating conditions.
Where failure or malfunction of the thermostat
controller could lead to personal injury or property
damage to the controlled equipment or other
property, additional precautions must be designed
into the control system. Incorporate and maintain
other devices, such as supervisory or alarm systems
or safety or limit controls, intended to warn of
or protect against failure or malfunction of the
thermostat controller.
Important: Le TEC3000 Series Thermostat Controller
est destiné à transmettre des données entrantes
à un équipement dans des conditions normales
de fonctionnement. Lorsqu'une défaillance ou un
dysfonctionnement du thermostat controller risque
de provoquer des blessures ou d'endommager
l'équipement contrôlé ou un autre équipement, la
conception du système de contrôle doit intégrer des
dispositifs de protection supplémentaires.Veiller
dans ce cas à intégrer de façon permanente d'autres
dispositifs, tels que des systèmes de supervision
ou d'alarme, ou des dispositifs de sécurité ou de
limitation, ayant une fonction d'avertissement
ou de protection en cas de défaillance ou de
dysfonctionnement du thermostat controller.
North American emissions
compliance
United States
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in
a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception,
which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and
receiver.
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV
technician for help.
LIT-12013162
2020-12-15
TEC3322-1x-xxx, TEC3323-1x-xxx, TEC3622-1x-xxx,
TEC3623-1x-xxx, TEC3022-1x-xxx, TEC3023-1x-xxx,
TEC312x-14-xxx

Questions and Answers

  • J
    John HensonSep 16, 2025
    Why does Johnson Controls TEC3312-14 provide an error when trying to upgrade firmware?
    • S
      Sandra GlassSep 16, 2025
      If your Johnson Controls Thermostat provides an error when trying to upgrade firmware, it means that the firmware on the USB drive is below the minimum required version (Error code 1025). Use firmware version 3.0.2.xxxx (for networked models) or 2.0.2.xxxx (for wireless models) or higher. A reboot is required to clear the Firmware Mismatch fault that occurs.
  • B
    brookssheriSep 17, 2025
    Why TEC3000 zone temperature doesn't change fast enough?
    • M
      Monica SchmidtSep 17, 2025
      If the TEC3000 zone temperature does not change fast enough compared to the measured zone temperature from a verification device, it is because the TEC3000 is configured by default for larger spaces with normal-sized equipment when a proportional device is active. To resolve this, select Control Setup > Tuning > Equipment Size > Oversized.
  • T
    Thomas SullivanSep 18, 2025
    Why zone space temperature increases/decreases too much in unoccupied mode on Johnson Controls TEC3312-14?
    • E
      edgar88Sep 18, 2025
      If the zone space temperature increases or decreases too much when the unit is active in unoccupied mode on your Johnson Controls Thermostat, it means that the heating and cooling equipment are too big for the unoccupied space. Decrease the Unoccupied Off Delay parameter from 10 minutes to a more appropriate time for the equipment configuration.
  • M
    Mary RodriguezSep 18, 2025
    Why does Johnson Controls TEC3312-14 provide an error when trying to back up settings?
    • R
      ramosmarilynSep 18, 2025
      If your Johnson Controls Thermostat provides an error when trying to back up settings, it means the USB drive is defective. Try a different USB drive.
  • J
    Jason HodgeSep 23, 2025
    Why does Johnson Controls TEC3312-14 Thermostat provide an error when trying to restore settings from a backup?
    • C
      Christopher JosephSep 23, 2025
      If your Johnson Controls Thermostat provides an error when trying to restore settings from a backup, it could be due to several reasons. The USB drive might be defective, so try a different USB drive. The Restore file might be corrupt, so try restoring a different backup file. The Restore file might be from an incompatible model TEC, so ensure that the backup file being restored was from the same model TEC.
  • V
    Victoria GreenSep 23, 2025
    Why Johnson Controls TEC3312-14 is unable to access a USB drive?
    • L
      Lisa BradfordSep 23, 2025
      If your Johnson Controls Thermostat is unable to access a USB drive, it could be because the drive is formatted as NTFS or another unsupported format. The TEC supports file allocation table (FAT) (for networked models), FAT16 (for wireless models), and FAT32 (for all models) formats only. Try reformatting the USB drive, or try a different USB drive with a supported format. Also, the USB drive might be defective, so trying a different drive is a good step.
  • E
    erika62Sep 23, 2025
    What to do if Johnson Controls TEC3312-14 Thermostat displays Firmware Mismatch?
    • G
      Gary BensonSep 23, 2025
      If your Johnson Controls Thermostat displays a Firmware Mismatch, it could be due to a previous upgrade that did not complete. In this case, upgrade the TEC3000 to the latest released version and then upgrade it to the current version again. Alternatively, the previous downgrade might not have completed because the previous version is no longer supported; in this case, reboot the TEC3000 to clear the fault.
  • S
    Susan PalmerAug 23, 2025
    What to do if the Johnson Controls TEC3312-14 shows 'Remote Zone Temp Fail'?
    • K
      Kevin MahoneyAug 23, 2025
      If your Johnson Controls Thermostat displays 'Remote Zone Temp Fail', it indicates that the External Zone Temperature sensor is either disconnected or has failed. Here's what you should do: 1. Check the sensor's wiring to ensure it's properly connected. 2. If the sensor was intentionally disconnected, reset the sensors through the menu. 3. If the problem continues, you may need to order replacement units and return the faulty devices to Johnson Controls under the RMA program.
  • M
    Michael GuerraSep 6, 2025
    What to do if Johnson Controls TEC3312-14 displays Calibration Corrupt?
    • K
      Keith Murray PhDSep 6, 2025
      If your Johnson Controls Thermostat displays 'Calibration Corrupt', it means that factory calibration data is lost or not installed. To resolve this, order replacement units and return the affected devices to Johnson Controls under the RMA program.
  • I
    iparkerSep 5, 2025
    What causes USB Malfunction on Johnson Controls TEC3312-14 Thermostat?
    • A
      Alan ClarkSep 5, 2025
      If your Johnson Controls Thermostat reports a USB Malfunction, it indicates that a USB drive has malfunctioned and drawn more than the maximum allowed current. You can try inserting and using the USB drive again, or try a new USB drive. If the problem persists, order replacement units and return the affected devices to Johnson Controls under the RMA program.

Summary

Applications

Networked and Wireless Model Features

Describes connectivity, USB, touchscreen, occupancy sensing, and wireless compatibility.

Fan Coil Equipment Control

Details supported fan types (single, multi, variable speed) and dehumidification control.

Important Safety Information

Installation Guide

Location Considerations for Installation

Provides guidance on optimal placement for networked and wireless models.

Installing the Thermostat Controller

Removing and Mounting Controller Components

Details cover removal, base mounting, and securing procedures.

Wiring Procedures

Electrical Safety and Wiring Practices

Covers warnings, wire stripping, terminal connections, and wire management.

Terminal Identification

Terminal Labels and Functions Overview

Describes the purpose of each terminal on the controller.

Wiring Diagrams

Proportional Wiring Diagram

Illustrates the typical wiring for proportional control systems.

Application-Specific Wiring Diagrams

VAV and Fan Coil Wiring Configurations

Shows wiring for VAV, two-pipe, and four-pipe fan coil applications.

Customizing the Home Screen

Changing Display Themes and Passcodes

Explains how to alter themes and set passcodes for user access control.

Touchscreen Icons Reference

Menu, Power, Humidity, and Degree Icons

Describes common icons for navigation, unit status, and readings.

Network, Radio Signal, and Arrow Icons

Explains icons related to network connectivity and setpoint adjustments.

Touchscreen Icons Reference (Continued)

Hold, Setpoint, Mode, and Fan Icons

Details icons for hold modes, setpoints, operating modes, and fan control.

Occupancy, Navigation, and System Icons

Covers icons for occupancy status, screen navigation, and system information.

Using the USB Port for Updates and Backups

Loading Firmware and Restoring Settings

Guides on firmware updates and restoring controller configurations.

Backing Up and Managing Settings

Explains how to save and retrieve controller settings.

Configuring Communication Modes

Details settings for BACnet and N2 communication.

Network Configuration

Wired Network Setup (BACnet;N2)

Covers configuring BACnet MS/TP and N2 addresses.

Wireless Network Setup (PAN ID)

Details setting up wireless communication via PAN ID.

Configuring Supply Fan Settings

Setting Control and Fan Modes

Changeover Mode Configuration

Dehumidification Control Setup

Temperature Setpoint Configuration

Occupancy Configuration

Scheduling Operations

Advanced Scheduling Features

PID and PRAC+ Tuning

PID and PRAC+ Tuning Configuration

Configurable Binary Inputs

Configurable Binary Inputs (Continued)

Commissioning Mode and Scheduled Circulation

Configurable Analog Inputs (AIs)

Networked Sensors and Fault Diagnostics

Temperature Sensor Specifications

Temperature Sensor Specifications (Continued)

Troubleshooting Guide

Troubleshooting Guide (Continued)

Technical Specifications Overview

Power, USB, Analog Outputs, and Network Guidelines

Lists electrical, USB, output ratings, and network parameters.

Wireless Transmission Power and Range

Details wireless transmission specifications for different models.

Technical Specifications Details

Temperature Range, Accuracy, and Ambient Conditions

Specifies operating temperature, accuracy, humidity, and ambient conditions.

Johnson Controls TEC3312-14 Specifications

General IconGeneral
Display TypeDigital LCD
Power Source24 VAC
ControlSingle Stage
Stages1 Heat / 1 Cool
Hold FeatureYes
Backup BatteryNo
TypeDigital
Temperature Range40°F to 90°F
OutputRelay
ProgrammableNo

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