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Johnson Controls TEC2245-4 Installation Instructions Manual
Johnson Controls TEC2245-4 Installation Instructions Manual

Johnson Controls TEC2245-4 Installation Instructions Manual

Network thermostat controller with single proportional output and one-speed fan control

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TEC2245-4 L
ON
with Single Proportional Output and One-Speed Fan
Control
Installation Instructions
Applications
The TEC2245-4 Thermostat Controller is a
L
W
® network device that provides control of
ON
ORKS
two-pipe fan coils, cabinet unit heaters, or other
equipment using a proportional 0 to 10 VDC control
input and one-speed fan control.
The technologically advanced TEC2245-4 Thermostat
Controller features a Building Automation
System (BAS) L
W
ON
ORKS
capability that enables remote monitoring and
programming for efficient space temperature control.
The TEC2245-4 Thermostat Controller features an
intuitive User Interface (UI) with backlit display that
makes setup and operation quick and easy. The
thermostat controller also employs a unique,
proportional control algorithm that virtually eliminates
temperature offset associated with traditional,
differential-based thermostat controllers.
IMPORTANT: The TEC2245-4 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.
W
® Network Thermostat Controller
ORKS
network communication
TEC2245-4 L
W
® Network Thermostat Controller with Single Proportional
ON
ORKS
Output and One-Speed Fan Control Installation Instructions
Part No. 24-9890-1257, Rev. —
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 TEC2245-4 Thermostat Controller:
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, behind doors, air discharge grills, stairwells,
or outside doors
away from steam or water pipes, warm air stacks,
unconditioned areas (not heated or cooled), or
sources of electrical interference
Note: Allow for vertical air circulation to the
TEC2245-4 Thermostat Controller.
Issued February 8, 2010
1

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Summary of Contents for Johnson Controls TEC2245-4

  • Page 1 Control Issued February 8, 2010 Installation Instructions Applications North American Emissions Compliance The TEC2245-4 Thermostat Controller is a United States ® network device that provides control of ORKS two-pipe fan coils, cabinet unit heaters, or other This equipment has been tested and found to...
  • Page 2 Figure 4 illustrates the locations of the screw terminal Figure 2: Opening the Thermostat Controller PCB blocks on the thermostat controller. TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 3 Six-Pole Bottom Connector remove and label the wires to identify the terminal functions. Scom When replacing a TEC2245-4 Thermostat Controller, remove the old screw terminal blocks and reinsert them onto the PCB of the replacement thermostat controller. Figure 5: Terminal Blocks The LON connection does not have a removable terminal block.
  • Page 4 Not used Cool Not used Configurable Binary Input 1 Remote Sensor Scom Sensor Common Configurable Binary Input 2 COS/COC/SS Not labeled LON Network TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 5 24 VAC Thermostat Power Same 24 VAC Power Source Thermostat-to-Network Connection for Auxiliary Output (24 VAC Maximum) Figure 6: Wiring the TEC2245-4 Thermostat Controller TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 6: Setup And Adjustments

    • OVERRIDE key overrides the unoccupied mode to occupied at the local user interface for the The TEC2245-4 Thermostat Controller UI consists of specified TOccTime. (TOccTime is defined by five keys on the front cover (Figure 7). The function of...
  • Page 7 Controller The TEC2245-4 Thermostat Controller includes a 2-line, 8-character backlit display. Low-level The TEC2245-4 Thermostat Controller ships from the backlighting is present during normal operation, and it factory with default settings for all configurable brightens when any user interface key is pressed. The parameters.
  • Page 8 ( Increments of 1F /0.5C ) Figure 9: Heating Only Temperature Increase ( Increments of 1F /0.5C ) Figure 11: Heating with Reheat TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 9 This input can be tied into the air conditioning unit control card, which provides an alarm should there be a malfunction. TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 10 Note: Choose the selection option (0): Cooling Only when using a changeover sensor to allow changeover to occur between Cooling Only and Heating Only. TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 11 HVAC design with basic sizing and thermostat controller location errors that cannot be worked around. TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 12 TEC2245-4 L ® Network Thermostat Controller with Single Proportional Output and One-Speed ORKS Fan Control Installation Instructions...
  • Page 13: Troubleshooting

    TE-636S-1 Strap-Mount Temperature Sensor The TEC-6-PIR Accessory Cover can be used to replace the existing cover on a non-PIR TEC2245-4 Thermostat Controller to provide occupancy sensing capability. 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.
  • Page 14: Technical Specifications

    19 to 30 VAC, 1.0 A Maximum, 15 mA Minimum, 3.0 A In-Rush Output Rating Analog Inputs Resistive Inputs (RS and UI3) for 10k ohm Johnson Controls Type II Negative Temperature Coefficient (NTC) Thermistor Sensors Binary Inputs Voltage-Free Contacts across Terminal Scom to Terminals BI1, BI2, or UI3 Wire Size Unshielded Twisted Pair - 22 AWG (0.6 mm Diameter) Minimum, 18 AWG (1.0 mm...
  • Page 15 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.