Johnson Controls TEC2627-2 Installation Instructions And Operators Manual
Johnson Controls TEC2627-2 Installation Instructions And Operators Manual

Johnson Controls TEC2627-2 Installation Instructions And Operators Manual

Tec26x7-2 series bacnet ms/tp networked thermostats with two outputs

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TEC26x7-2 Series BACnet® MS/TP Networked Thermostats
with Two Outputs

Installation Instructions

Applications
The TEC26x7-2 Series Thermostats are BACnet®
Master-Slave/Token-Passing (MS/TP) networked
devices that provide control of local hydronic reheat
valves, pressure dependent Variable Air Volume (VAV)
equipment with or without local reheat, or other zoning
equipment using an on/off, floating, or proportional
0 to 10 VDC control input. The technologically
advanced TEC26x7-2 Series Thermostats feature a
Building Automation System (BAS) BACnet MS/TP
communication capability that enables remote
monitoring and programmability for efficient space
temperature control.
The TEC26x7-2 Series Thermostats feature an intuitive
user interface with backlit display that makes setup and
operation quick and easy. The thermostats also employ
a unique, Proportional-Integral (PI) time-proportioning
algorithm that virtually eliminates temperature offset
associated with traditional, differential-based
thermostats.
IMPORTANT: The TEC26x7-2 Series Thermostats
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.
TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs
Part No. 24-9890-242, Rev. A
Supersedes January 31, 2006
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 TEC26x7-2 Series Thermostat:
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
TEC26x7-2 Series Thermostat.
Issued November 8, 2006
Installation Instructions
1

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Summary of Contents for Johnson Controls TEC2627-2

  • Page 1: Installation Instructions

    TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Part No. 24-9890-242, Rev. A Installation Instructions Issued November 8, 2006 Supersedes January 31, 2006 Applications North American Emissions Compliance The TEC26x7-2 Series Thermostats are BACnet® United States Master-Slave/Token-Passing (MS/TP) networked This equipment has been tested and found to comply devices that provide control of local hydronic reheat with the limits for a Class A digital device pursuant to...
  • Page 2 To install the thermostat: 6. Drill a 3/16 in. (5 mm) hole at each of the two marked locations and tap nylon anchors (included 1. Use a Phillips-head screwdriver to remove the with the thermostat) flush to the wall surface. security screw on the bottom of the thermostat 7.
  • Page 3 6. Use a Phillips-head screwdriver to reinstall the security screw on the bottom of the thermostat cover. Table 1: Terminal Identification (See Figure 5.) Terminal Terminal Label Function Number TEC2627-2 TEC2647-2 (On/Off or (Proportional Floating Control) 0 to 10 VDC Control) 24 V~ Hot 24 V~ Hot...
  • Page 4 Separate 24 VAC Power Source for Auxiliary Output (24 VAC Maximum) Two-Pole 24 V~ 24 V~ Left Top Three-Pole Connector Right Top Connector 24 V~ 24 V~ – Eight-Pole Bottom Connector 24 VAC BO4/ BO1/ Thermostat Power Scom Independent Contacts •...
  • Page 5 Room Temperature Control Thermostat 24 V~ Hot (Minimum and Maximum Position BO1 Open Adjusted on Actuator) BO2 Close Figure 6: Wiring the TEC2627-2 Thermostat for Floating Control (Pressure-Dependent VAV Cooling Only) Proportional 0 to 10 Actuator UI3 COS 24 V~ Com...
  • Page 6 Room Temperature Control Thermostat BO2 Close (Minimum and Maximum Position BO5-Aux Adjusted on Actuator) BO5-Aux Figure 10: Wiring the TEC2627-2 Thermostat for Floating Control (Pressure-Dependent VAV Heating Cooling with Changeover and Reheat) Supply Air Heating/Cooling Temperature Sensor Proportional and On/Off...
  • Page 7 24 V~ Com 24 V~ Hot BO1 Open BO2 Close Room Temperature Control Thermostat Figure 12: Wiring the TEC2627-2 Thermostat for Floating Control (Heating/Cooling Hydronic Valve Control) UI3 COS 24 V~ Com 24 V~ Hot 0 to 10 Room Temperature...
  • Page 8 (Heating/Cooling Hydronic Valve Control with Changeover) 24 V~ 24 V~ 24 V~ 24 V~ Cooling Valve Heating Valve Four-Pipe Applications Two-Pipe Applications Figure 16: Wiring the TEC2627-2 Thermostat for On/Off Control 24 V~ 24 V~ 24 V~ 24 V~ Cooling Valve Heating/Cooling Valve Heating Valve...
  • Page 9 AUX (BO5) Output 1 = On Heating (BO3 and BO4) Valve Status MSV 66 For On/Off Control: 1 = Open (TEC2627-2 Model) 2 = Closed For Floating Control: 1 = Stopped 2 = Opening 3 = Closing TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions...
  • Page 10 Point Name Thermostat Point Range (Type/Address) Cooling (BO1 and BO2) Valve Status MSV 67 For On/Off Control: 1 = Open (TEC2627-2 Model) 2 = Closed For Floating Control: 1 = Stopped 2 = Opening 3 = Closing 5, 6 BI 62...
  • Page 11 2F°/1C° to Deadband 5F°/2.5C° BV 33 0 = 15 Minutes Reheat Time Base (BO5) 1 = 10 Seconds BV 35 0 = On/Off Control Type (TEC2627-2 Model) 1 = Floating TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions...
  • Page 12 Point Name Thermostat Point Range (Type/Address) MSV 36 1 = 0.5 Minutes Floating Motor Timing (TEC2627-2 Model) 2 = 1.0 Minute 3 = 1.5 Minutes 4 = 2.0 Minutes 5 = 2.5 Minutes 6 = 3.0 Minutes 7 = 3.5 Minutes 8 = 4.0 Minutes...
  • Page 13: Connecting The Ms/Tp Bus

    Connecting the MS/TP Bus • Off: indicates that there is no power to the thermostat or that the MS/TP wiring polarity is To connect the MS/TP Bus: reversed. 1. Set the MS/TP address of the TEC26x7-2 Series • Long: Indicates that the MS/TP communication Thermostat per the engineering drawings and test daughter board is the wrong type for the main for bus voltage, polarity, and isolation prior to wiring...
  • Page 14: Overriding Via The Nae

    Adding a Thermostat Adding Point Objects The thermostat must be added before its points can be The required point objects must be mapped under the mapped. To do this, select the BACnet Integration thermostat device. To accomplish this, select the under the Field Bus (refresh the tree view if required to thermostat device under the BACnet Integration see a newly added BACnet Integration) and choose...
  • Page 15: Setup And Adjustments

    Setup and Adjustments Thermostat Operation Overview Room Temp Backlit, plain text 70.0ºF LCD is easy to read LEDs indicate in any condition. system activity. Three keys on the thermostat make operation easy and intuitive. Figure 19: Front Cover of Thermostat Thermostat User Interface Keys Light-Emitting Diodes (LEDs) The TEC26x7-2 Series Thermostat user interface...
  • Page 16: Configuring The Tec26X7-2 Series Thermostat

    Configuring the TEC26x7-2 Series Thermostat The UI3 input provides changeover of hot/cold water switching or supply air temperature monitoring at the The TEC26x7-2 Series Thermostat comes from the thermostat. factory with default settings for all configurable parameters. The default settings are shown in Table 5. Each input can be configured to the Selection Options To reconfigure the parameters via the thermostat, included in Table 5.
  • Page 17 Table 4: Selection Options for Sequence of Operation in Four-Pipe Applications Selection Control Terminal Numbers Used (See Table 1 and Figure 5.) Option Curve On/Off Control Floating Control Proportional 0 to 10 VDC Control (0): Cooling Only See Figure 20. 10: Normally Open 10: Open Cooling 10: Proportional Cooling...
  • Page 18 On/Off, Floating, Heating Output or Proportional Outputs Cooling Output Reheat Cooling Setpoint 100% Heating Setpoint Deadband Device Opened On/Off, Floating, Device or Proportional Closed Output Temperature Increase (Increments of 1F°/0.5C°) Temperature Increase (Increments of 1F°/0.5C°) Figure 24: Heating/Cooling, Four-Pipe Applications Figure 23: Heating with Reheat, Two- or Four-Pipe Applications On/Off, Floating,...
  • Page 19 Table 5: Installer Configuration Menu (Part 1 of 4) Parameter Description and Default Selection Options Appearing on Display Com addr MS/TP address at the thermostat; Range: 004 to 127 coincides with the address assigned at the supervisory controller. Default: 4 Configuration of Binary Input 1.
  • Page 20 Defines the control output for the (On/Off): For Normally Open (N.O.) or Normally Closed (N.C.) type of valves used in the 24 VAC two-position valves. installation (TEC2627-2 model). (Floating): For proportional three-wire control of 24 VAC floating Default: Floating valves.
  • Page 21 Table 5: Installer Configuration Menu (Part 3 of 4) Parameter Description and Default Selection Options Appearing on Display SeqOpera Determines the sequence of (0): Cooling Only (Off-Cool). The default is Cool. operation. (1): Heating Only (Off-Heat). The default is Heat. Default: 1 (2): Cooling and Reheat (Off-Auto-Heat-Cool).
  • Page 22 FL time Sets the maximum actuator stroke Range: 0.5 to 9.0 min (adjustable in 0.5 minute increments) timing (floating ContrlTyp TEC2627-2 model). Default: 1.5 min Sets the maximum number of cycles Range: 3 to 8 cycles per hour per hour (on/off CntrlTyp TEC2627-2 model).
  • Page 23: Repair Information

    Strap-Mount Temperature Sensor MS-BACEOL-0 RS485 End-of-Line Terminator 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. Table 7: Troubleshooting Details (Part 1 of 2)
  • Page 24: Technical Specifications

    Table 7: Troubleshooting Details (Part 2 of 2) Symptom Probable Causes Thermostat Will See the probable causes listed in the Multiple Symptoms section earlier in this table. Not Come Online A thermostat may be connected to the wrong bus. A baud rate may be specified in the new thermostat that is incompatible with the running network. No device on the network is configured to use a specific baud rate (normally the NAE), but all devices are set to use auto baud.
  • Page 25 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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Tec2647-2

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