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TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked
Multi-Stage Economizer Thermostat Controllers

Installation Instructions

TEC2604-4 and TEC2604-4+PIR
Applications
The TEC2604-4 and TEC2604-4+PIR Thermostat
Controllers are BACnet® Master-Slave/
Token-Passing (MS/TP) networked devices that
provide control of single- or multi-stage unitary rooftop
units with economizers. The TEC2604-4+PIR
Thermostat Controller provides advanced active
occupancy logic that automatically switches occupancy
from Occupied to Unoccupied as required by the
presence of local activity. See the Occupancy Sensor
Operation – TEC2604-4+PIR Thermostat Controller
section for more information.
The technologically advanced TEC2604-4 and
TEC2604-4+PIR Thermostat Controllers feature a
Building Automation System (BAS) BACnet MS/TP
communication capability that enables remote
monitoring and programming for efficient space
temperature control.
The TEC2604-4 and TEC2604-4+PIR Thermostat
Controllers feature an intuitive user interface with
backlit display that makes setup and operation quick
and easy. The thermostat controllers also employ a
unique, Proportional-Integral (PI) time-proportioning
algorithm that virtually eliminates temperature offset
associated with traditional, differential-based
thermostat controllers. Economizer functions include a
0 to 10 VDC control signal, dry bulb changeover
strategy, adjustable minimum position, and mixed air
setpoint control.
IMPORTANT: The TEC2604-4 and
TEC2604-4+PIR Thermostat Controllers are
intended to provide an input to equipment under
normal operating conditions. Where failure or
malfunction of the thermostat 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.
North American Emissions Compliance
United States
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when this equipment is
operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference, in which case
the user will be required to correct the interference
at his/her own expense.
Canada
This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Installation
Location Considerations
Locate the TEC2604-4 or TEC2604-4+PIR Thermostat
Controller:
For integrated Passive Infrared (PIR) models, be sure
that the thermostat controller is located centrally, where
occupant movement is frequent.
TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked
Multi-Stage Economizer Thermostat Controllers Installation Instructions
Part No. 24-9890-1079, Rev. B
Supersedes January 27, 2010
on a partitioning wall, approximately 5 ft (1.5 m)
above the floor in a location of average
temperature
away from direct sunlight, radiant heat, outside
walls, outside doors, air discharge grills, or
stairwells, and from behind doors
away from steam or water pipes, warm air stacks,
unconditioned areas (not heated or cooled), or
sources of electrical interference
Issued June 22, 2010
1

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Summary of Contents for Johnson Controls TEC2604-4

  • Page 1: Installation Instructions

    TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Part No. 24-9890-1079, Rev. B Installation Instructions Issued June 22, 2010 TEC2604-4 and TEC2604-4+PIR Supersedes January 27, 2010 Applications North American Emissions Compliance The TEC2604-4 and TEC2604-4+PIR Thermostat United States Controllers are BACnet®...
  • Page 2 7. Secure the base to the wall surface using two mounting screws as illustrated in Figure 3. Note: Be careful not to overtighten the mounting screws. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 3 Note: Seal the hole in the wall with fireproof material to prevent drafts from affecting the ambient temperature readings. 3. Reinsert the screw terminal blocks onto the PCB. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 4: Connecting The Ms/Tp Bus

    Thermostat Power Sensor install a jumper across RC and RH. Figure 5: Wiring the TEC2604-4 or TEC2604-4+PIR Thermostat Controller Connecting the MS/TP Bus 3. After the bus wires are connected to the first thermostat controller, continue in a daisy-chained To connect the MS/TP Bus: fashion to the next thermostat controller.
  • Page 5: Setup And Adjustments

    Five keys on the thermostat controller make operation easy and intuitive. Figure 6: Front Cover of Thermostat Controller (TEC2604-4+PIR Model Shown) Thermostat Controller User Interface Keys stop the Status Display Menu from scrolling and to manually scroll to the next parameter on...
  • Page 6 Occupancy sensing is enabled only if a PIR cover is • System Mode installed. The PIR cover, when installed, is auto detected. • Schedule Status (Occupied/Unoccupied/Override [PIR Models]) TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 7: Configuring Inputs Di1 And Di2

    MENU key to proceed through the the scrolling Status Display Menu and when the Installer Configuration Menu parameters. message is displayed, the backlight momentarily lights up. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 8 The thermostat controller heating or cooling action is locked out if no airflow is detected 10 seconds after the fan (Terminal G) is energized. Contact open = no airflow; contact closed = airflow present. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 9 The use of a larger proportional band can be used to solve issues for flawed HVAC design with basic sizing and thermostat controller location errors that cannot be worked around. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 10 Range: -5.0F°/-2.5C° to 5.0F°2.5C° adjustable in 1.0F°/0.5C° temperature sensor calibration increments (offset). The offset can be added to or subtracted from the actual displayed room temperature. Default: 0.0F°/0.0C° TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 11 When the OA temperature is below the changeover setpoint, free cooling is used (economizer operation). When the OA temperature is above the setpoint, mechanical cooling is used (compressor operation). Default: 55.0°F/13.0°C TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 12: Operation

    When the thermostat controller is in the Main User Menu and is left unattended for 45 seconds, the menu reverts to the Status Display Menu. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 13: Resuming The Programmed Schedule

    (it may be the set? Y/N key to reenter the temperature first prompt). Press the YES key to setting menu. enter the temperature setting menu. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 14: Troubleshooting

    3. Press the YES key to return to the Status Display Menu or press the NO key to return to the system mode selection menu. TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat Controllers Installation Instructions...
  • Page 15 Additional TE-636xx-x Series 10k ohm Johnson Controls Type II Thermistor Sensors are available; refer to the TE-6300 Series Temperature Sensors Product Bulletin (LIT-216320) for more details. The TEC-3-PIR Accessory Cover can be used to replace the existing cover on a non-PIR TEC2604-4 Thermostat Controller to provide occupancy sensing capability.
  • Page 16: Technical Specifications

    Digital Inputs Voltage-Free Contacts across Terminal C to Terminals DI1 and DI2 Analog Inputs Resistive Inputs (RS and UI3) for 10k ohm Johnson Controls Type II Negative Temperature Coefficient (NTC) Thermistor Sensors Wire Size 18 AWG (1.0 mm Diameter) Maximum, 22 AWG (0.6 mm Diameter) Recommended...
  • Page 17 The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

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