Johnson Controls TEC26x6(H)-4, TEC26x6H-4+PIR Installation Manual

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with Dehumidification Capability, Fan Control, and Occupancy Sensing Capability

Installation Instructions

Part No. 24-9890-1001, Rev. B

Issued June 22, 2010

Supersedes January 27, 2010

Applications

The TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers are BACnet® MS/TP networked devices that provide control of two- or fourpipe fan coils, cabinet unit heaters, or other equipment using on/off, floating, or proportional 0 to 10 VDC control input, three speeds of fan control, and dehumidification capability. The TEC26x6H-4+PIR Series Thermostat Controllers have occupancy sensing capability built into the device. These devices maximize up to 30% energy savings in high-energy usage light commercial buildings, such as schools and hotels, during occupied times by using additional standby setpoints. See the Occupancy Sensor

Operation – TEC26x6H-4+PIR Series Thermostat Controllers section for more information.

The technologically advanced TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers feature a Building Automation System (B AS) BACnet MS/TP communication capability that enables remote monitoring and programming for efficient space temperature control. Specific models are available to accommodate commercial and hospitality applications.

The TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers feature an intuitive User Interface (UI) with backlit display that makes setup and operation quick and easy. The thermostats also emplo y a unique, Proportional-Integral (PI) time-proportioning algorithm that virtually eliminates temperature offset associated with traditional, differential-based thermostat controllers.

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 TEC26x6(H)-4 or TEC26x6H-4+PIR Series Thermostat Controller:

IMPORTANT: The TEC26x6(H)-4 and TEC26x6H-4+PIR Series 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.

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat

Controllers with Dehumidification Capability, Fan Control, and Occupancy Sensing

• 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

For integrated Passive Infrared (PIR) models, be sure that the thermostat controller is located centrally , wh ere occupant movement is frequent.

Capability Installation Instructions

Note: Allow for vertical air circulation to the

Figure 1: Removing the Thermostat Controller

Cover (TEC26x6H-4+PIR Model Shown)

FIG:cvr_ rmvl

Figure 2: Opening the Thermost a t Contro ller PCB

Tabs

TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers.

To install the thermostat:

1. Use a Phillips-head screwdriver to remove the security screw if it is installed on the bottom of the thermostat controller cover.

Note: Normally, the security screw is packaged separately in a plastic bag with the thermostat controller. Skip this step if the screw is not installed on the bottom of the cover.

2. Pull the bottom edge of the thermostat cover and open the thermostat as illustrated in Figure 1.

Note: PIR models have a wiring connection between the cover and the Printed Circuit Board (PCB). This connection allows for proper wiring of the occupancy sensor. Carefully remove the wiring connection from the PCB by pulling up on the connector block. Do not attempt to remove the connector block by pulling on the wires.

3. Carefully pull the locking tabs on the right side of the thermostat mounting base and unlock the PCB. Open the PCB to the left as illustrated in Figure 2.

PCB Locking

IG:prcrctbrd

4. Pull approximately 6 in. (152 mm) of wire from the wall and insert the wire through the hole in the thermostat mounting base.

5. Align the thermostat mounting base on the wall and use the base as a template to mark the two mounting hole locations.

6. Position the thermostat mounting base on the wall so that the arrow on the base points upward to indicate the top of the thermostat.

Note: If you need to install the thermostat on an electrical junction box, use 2-1/2 x 4 in. (63 x 101 mm) square boxes with mud ring covers, and avoid smaller 1-1/2 x 4 in. (38 x 101 mm) square or 3 x 2 in. (76 x 51 mm) boxes. This procedure ensures you have enough space for cabling and end-of-line devices, if needed.

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Note: For surface-mount applications, use durable mounting hardware such as Molly bolt anchors that cannot be easily pulled out of the mounting surface.

7. Secure the mounting base to the wall surface using two mounting screws as illustrated in Figure 3.

Note: Be careful not to overtighten the mounting screws.

Figure 3: Securing the Thermostat Controller

Mounting Base to the Wall

FIG:mntbs

Figure 4: Removing the Screw Terminal Blocks

8. Swing the PCB back to the right and carefully snap it into the locking tabs on the thermostat mounting base.

9. Remove the screw terminal blocks that are attached to a disposable adhesive. Figure 4 illustrates the locations of the screw terminal blocks on the thermostat controller.

CAUTION: Risk of Electric Shock.

Disconnect the power supply before making electrical connections to avoid electric shock.

CAUTION: Risk of Property Damage.

Do not apply power to the system before checking all wiring connections. Short circuited or improperly connected wires may result in permanent damage to the equipment.

IMPORTANT: Make all wiring connections in accordance with local, national, and regional regulations. Do not exceed the electrical ratings of the TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers.

To wire the thermostat:

1. Strip the ends of each wire 1/4 in. (6 mm) and connect them to the appropriate screw terminals as indicated in Table 1 and Figure 5 through Figure 9.

Note: For more details on wiring the MS/TP Communications Bus, refer to the MS/TP

Communications Bus Technical Bulletin (LIT-12011034).

s k

n m

: G

I F

Wiring

When an existing thermostat controller is replaced, remove and label the wires to identify the terminal functions. When a TEC26x6(H)-4 or TEC26x6H-4+PIR Series Thermostat is replaced, simply remove the old screw terminal blocks and reinsert them onto the PCB of the replacement thermostat.

IMPORTANT: Because some of the objects may not directly correlate to a previous version (TEC26xx-4), you must rediscover all point objects for the TEC26x6(H)-4 or TEC26x6H-4+PIR version. For detailed information on this mapping, refer to the

TEC BACnet® MS/TP Network Series Thermostat Controllers Technical Bulleti n (L IT-1201159 2 ).

2. Carefully push any excess wire back into the wall. 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.

4. Reattach the MS/TP communication wires to the terminal block.

Note: If multiple wires are inserted into the terminals, be sure to properly twist the wires together prior to inserting them into the terminal connectors.

5. Reattach the thermostat cover to the mounting base (top side first).

6. Use a Phillips-head screwdriver to reinstall the security screw on the bottom of the thermostat cover.

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Table 1: Terminal Identification (See Figure 5.)

Terminal Number

TEC2616-4, TEC2616H-4, TEC2616H-4+PIR (On/Off Control)

1 Fan-H Fan-H F an-H Fan On – High 2 Fan-M Fan-M Fan-M Fan On – Medium 3 Fan-L Fan-L Fan-L Fan On – Low 4 24 V~ Hot 24 V~ Hot 24 V~ Hot 24 VAC from Transformer 5 24 V~ Com 24 V~ Com 24 V~ Com 24 VAC (Common) from Transformer 6 BO5 Aux BO5 Aux BO5 Aux Aux BO (Auxilia ry Output) 7 BO5 Aux BO5 Aux BO5 Aux Aux BO (Auxilia ry Output) 8 BO3 BO3 Blank Open Heat

9 Blank BO4 AO2 Close Heat 10 Blank BO1 AO1 Open Cool 1 1 BO2 BO2 Blank Close Cool 12 BI1 BI1 BI1 Configurable Binary Input 1 13 RS RS RS Remote Sensor 14 Scom Scom Scom Sensor Common 15 BI2 BI2 BI2 Configurable Binary Input 2 16 UI3 UI3 UI3 Configurable Universal Input 3

Blank +, –, REF +, –, REF +, –, REF MS/TP Bus

Terminal Label Function

TEC2626-4, TEC2626H-4, TEC2626H-4+PIR TEC2636-4, TEC2636H-4, TEC2636H-4+PIR (On/Off or Floating Control)

TEC2646-4, TEC2646H-4, TEC2646H-4+PIR, TEC2656-4, TEC2656H-4, TEC2656H-4+PIR (Proportional 0 to 10 VDC Control)

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Figure 5: Wiring the TEC26x6(H)-4 or TEC26x6H-4+PIR Series Thermostat Controller

(See Table 1)

FIG:wrng_26x6(H)(+PIR)

–

Supervisory

Controller

Contact

• COC/NH

= Cold Water

• COC/NC Normall y Cool

= Hot Water

Voltage-Free Contact

• Door

• Remote Override

• Filter Alarm

• Service Alarm

Voltage-Free Contact

• Remote NSB

• Motion

• Window

Three-Pole Right Top Connector

–

Hot

Com

- OR Same 24 VAC

(24 VA C Maximum )

Power Source for Auxiliary Output

(24 VA C Maximum )

BO5

Aux

BO5

Aux

24 VAC

Thermostat Power

24 V~

Com

24 V~

Hot

Power and Fan

BO5

Aux

BO5

Aux

• Reheat

• Lighting

• Exhaust Fa n

Aux

Fan

-H

Fan

-M

Fan

-L

24 VAC

Thermostat Power

24 V~

Com

24 V~

Hot

Fan

-H

Fan

-M

Fan

-L

Five-Pole

Eight-Pole Bottom Connector

AO1

UI3

BI1

BI2

BO4/

AO2

1 2 3 4 5

Separate 24 VAC

Left Top Connector

Fan

-H

Fan-MFan

-L

24 V~

BO5

Aux

6 7 8

BO3

Power Source for Auxiliary Output

Aux Contact (Isolated Co m m on)

• On/Off Actuation

REF

BO1/

BO2

Scom

9 10 11 12 13 14 15 16

Remote Inputs

BI1

Scom

BI2

UI3

- OR -

Supply Sensor Changeover Sensor

+ REF

Voltage-Free

Normally Heat Closed Contact

Closed Contact

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Figure 6: Wiring TEC2616(H)-4 Thermostat Controllers for On/Off Control

24 V~

Com

24 V~

Hot

BO2

Two -Pip e Applicat ions

Four-Pipe Applications

Com

N.O.

Heating

Valve

24 V~

Hot

BO3

N.C.

Cooling

Valve

Figure 7: Wiring TEC2626(H)-4 and TEC2636(H)-4 Thermostat Controllers for On/Off Control

Two-Pipe Applications

Four-Pipe Applications

FIG:TEC2626-36h4ooc

24 V~

Com

24 V~

Hot

Com

Hot

Cooling

Valve

Heating

Valve

Figure 8: Wiring TEC2626(H)-4 and TEC2636(H)-4 Thermostat Controllers for Floating Control

Four-Pipe Applications

FIG:TEC262 6-36h4fc

Com

Hot

BO1

Cooling

Valve

Heating

Valve

24 V~

Com

24 V~

Hot

BO1

Heating/Cooling

Valve

BO2

Figure 9: Wiring TEC2646(H)-4 and TEC2656(H)-4 Thermostat Controllers for Proportional Control

Two -Pip e Applic ations

Four-Pipe Applications

FIG:TEC2646-56h4prp

Heating/Cooling

Valve

Com

Hot

Cooling

Valve

Heating

Valve

24 V~

Com

24 V~

Hot

AO1

24 V~

FIG:TEC2616h4ooc

24 V~

Two -Pip e Applic ations

24 V~

AO2

BO4

24 V~

BO2 BO3

AO1

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Connecting the MS/TP Bus

To connect the MS/TP Bus:

1. Set the MS/TP address of the TEC BACnet MS/TP Network Series Thermostat Controller per the engineering drawings and test for bus voltage, polarity, and isolation prior to wiring the MS/TP Bus. Use the Com addr parameter to set the MS/TP address for the thermostat controller.

Note: The wiring rules for the MS/TP Bus diff er from the wiring rules for the N2 Bus. For more details on wiring the MS/TP Communications Bus, refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034).

2. Observe the polarity when connecting the bus wires to the thermostat controller.

3. After the bus wires are connected to the fir st thermostat controller, continue in a daisy-chained fashion to the next thermostat controller.

Note: The bus wiring must be twisted-pair lines. Do not run the bus wiring in the same conduit as line voltage wiring (30 VAC or above) or other wiring that switches power to highly inductive loads (such as contactors, coils, motors, or generators).

The MS/TP Bus requires proper termination and biasing at each end of a segment (a segment is a physically continuous length of wire). Because the rooftop controller is not equipped with end-of-line termination, a Johnson Controls® MS-BACEOL-0 End-of-Line Terminator (see Table 5; ordered separately) or similar device is recommended to provide this end-of-line termination. An end-of-line terminator is required if a supervisory controller is not at the end of the segment. If a supervisory controller is at the end of the segment, then the end-of-line terminator switch on the supervisory controller must be set in the ON position.

The thermostat controller has automatic baud rate detection. Do not exceed the maximum number of devices allowed on a field bus. Be sure that the wiring terminations are set correctly and that all communication wiring is daisy-chained with no taps.

A small green light under the thermostat controller cover (on the left edge when facing the thermostat controller) indicates the communications mode when the thermostat controller is operating.

The following blink codes may be seen:

• Short-Short-Long: Indicates that the baud rate is known and that communication is active.

• Short-Short: Indicates that the thermostat controller is scanning for the correct baud rate and that there is no communication.

• Off: Indicates that there is no power to the thermostat controller or that the MS/TP wiring polarity is reversed.

• Long: Indicates that the MS/TP communication daughter board is the wrong type for the main board.

MS/TP Thermostat Controller Mapping

For detailed information on MS/TP Bus objects and thermostat controller mapping, refer to the TEC

BACnet MS/TP Network Series Thermostat Controllers Technical Bulletin (LIT-12011592).

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Setup and Adjustments

Figure 10: Front Cover of Thermostat Controller (TEC26x6H-4+PIR Model Shown)

70.0ºF

Backlit, plain text

Liquid Crystal Display (LCD)

is easy to read in any condition.

Five keys on the thermostat controller make ope ra t ion easy and intuitive.

indicate system activi ty.

FIG:frnt_v w

PIR motio n de te ct or

saves ene r gy using

stand-b y setpoints.

°C

°F

Room Temp

Light-Emitting Diodes (LEDs)

Thermostat User Interface Keys

The TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat UI consists of five keys on the front cover (Figure 10). The function of each key is as follows:

• MODE key toggles among the system modes available, as defined by selecting the appropriate operation sequence in the Installer Configuration Menu (Off, Heat, Cool, Auto).

• FAN key toggles am on g th e fan mode s available, as defined by selecting the appropriate fan menu options defined in the Installer Configuration Menu (Low, Med, High, Auto).

• OVERRIDE key (commercial models) overrides the unoccupied mode to occupied at the local user interface for the specified TOccT ime. (T OccTime is defined by selecting the appropriate time period in the Installer Configuration Menu.) If one of the binary inputs is configured to operate as a remote override contact, this OVERRIDE function is disabled. The OVERRIDE key also allows access to the Installer Configuration Menu. See the

Configuring the TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controller

section.

• °C/°F key (hospitality models) changes the temperature scale to either Celsius or Fahrenheit and allows access to the Installer Configuration Menu. See the Configuring the TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controller section.

TEC26x6(H)-4 and TEC26x6H-4+PIR Series BACnet® MS/TP Networked Thermostat Controllers with

Dehumidification Capability, Fan Control, and Occupancy Sensing Capability Installation Instructions

Note: For hospitality models, binary inputs can override from the unoccupied mode to occupied mode.

• UP/DOWN arrow keys change the configuration parameters and activate a setpoint adjustment.

Backlit Liquid Crystal Display (LCD)

The TEC26x6(H)-4 and TEC26x6H-4+PIR Series Thermostat Controllers include a 2-line, 8-character backlit display. Low-level backlighting is present during normal operation, and it brightens when any user interface key is pressed. The backlight returns to low level when the thermostat is left unattended for 45 seconds.

Light-Emitting Diodes (LEDs)

Three LEDs are included to indicate the fan status, call for heat, or call for cooling:

• The fan LED is on when the fan is on.

• The heat LED is on when heating is on.

• The cool LED is on when cooling is on.

Integrated PIR Sensor – TEC26x6H-4+PIR Series Thermostat Controllers

The integrated PIR sensor allows for automatic switching between fully adjustable Occupied and Stand-By temperature setpoints without user interaction. This feature generates incremental energy savings during scheduled occupied periods while the space is unoccupied.

+ 16 hidden pages

Johnson Controls TEC26x6(H)-4, TEC26x6H-4+PIR Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Applications

North American Emissions Compliance

United States

Canada

Installation

Location Considerations

Wiring

Connecting the MS/TP Bus

MS/TP Thermostat Controller Mapping

Setup and Adjustments

Light-Emitting Diodes (LEDs)

Thermostat User Interface Keys

Backlit Liquid Crystal Display (LCD)

Integrated PIR Sensor – TEC26x6H-4+PIR Series Thermostat Controllers