Johnson Controls TEC2627-2 Manual de operación y mantenimiento

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

Installation Instructions 1

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.

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.

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

Installation Instructions Part No. 24-9890-242, Rev. A

Issued November 8, 2006

Supersedes January 31, 2006

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions2

To install the thermostat:

1. Use a Phillips-head screwdriver to remove the

security screw on the bottom of the thermostat

cover.

2. Pull the bottom edge of the thermostat cover and

open the thermostat as illustrated in Figure 1.

3. Carefully pull the locking tabs on the right side of

the thermostat mounting base and unlock the

Printed Circuit Board (PCB). Open the PCB to the

left as illustrated in Figure 2.

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.

Note: Be sure to position the thermostat mounting

base so that the arrow on the base points upward to

indicate the top of the thermostat.

6. Drill a 3/16 in. (5 mm) hole at each of the two

marked locations and tap nylon anchors (included

with the thermostat) flush to the wall surface.

7. Position the thermostat mounting base on the wall

and use the two mounting screws (included with

the thermostat) to secure the base to the surface

as illustrated in Figure 3.

Note: Be careful not to overtighten the mounting

screws.

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 as illustrated in

Figure 4.

Figure 1: Removing the Thermostat Cover

FIG:cvr_rmvl

printedcircuitboard

PCB

Locking

Tabs

Figure 2: Opening the Thermostat PCB

mountingbase

Figure 3: Securing the Thermostat

Mounting Base to the Wall

Figure 4: Removing the Screw Terminal Blocks

FIG:trmnl_blcks

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions 3

Wiring

When an existing thermostat is replaced, remove and

label the wires to identify the terminal functions. When

a TEC26x7-2 Series Thermostat is replaced, simply

remove the old screw terminal blocks and reinsert them

onto the PCB of the replacement thermostat.

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 18.

Note: For more details on wiring the MS/TP

Communications Bus, refer to the MS/TP

Communications Bus Technical Bulletin

(LIT-12011034).

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.

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 TEC26x7-2 Series Thermostat.

Table 1: Terminal Identification (See Figure 5.)

Terminal

Number Terminal Label Function

TEC2627-2

(On/Off or

Floating Control)

TEC2647-2

(Proportional

0to10VDCControl)

4 24 V~ Hot 24 V~ Hot 24 VAC from Transformer

5 24 V~ Com 24 V~ Com 24 VAC (Common) from Transformer

6 BO5 Aux BO5 Aux Aux BO (Auxiliary Output)

7 BO5 Aux BO5 Aux Aux BO (Auxiliary Output)

8 BO3 Blank Open Heat

9 BO4 AO2 Close Heat

10 BO1 AO1 Open Cool

11 BO2 Blank Close Cool

12 BI1 BI1 Configurable Binary Input 1

13 RS RS Remote Sensor

14 Scom Scom Sensor Common

15 BI2 BI2 Configurable Binary Input 2

16 UI3 UI3 Configurable Universal Input 3

Blank +, –, REF +, –, REF MS/TP Bus

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions4

Figure 5: Wiring the TEC26x7-2 Series Thermostat

(See Table 1.)

FIG:wrng

–

+REF

Supervisory

Controller

BI2 UI3

BI1

Scom

- OR -

Remote Inputs

Supply Sensor

Changeover Sensor

Voltage-Free

Contact

• COC/NH

Normally Heat

Closed Contact

= Cold Water

• COC/NC

Normally Cool

Closed Contact

= Hot Water

Voltage-Free

Contact

• Door

• Remote

Override

• FilterAlarm

• Service Alarm

Voltage-Free

Contact

• Remote NSB

• Motion

• Window

Three-Pole

Right Top

Connector

9 10 11 12 13 14 15 16

REF

–

BO2

BO5

Aux

BO5

Aux

Scom

BO1/

AO1

UI3

BI1 BI2

BO3

Two-Pole

Left Top

Connector

24 V~

Hot 24 V~

Com

BO4/

AO2

Same 24 VAC

Power Source for Auxiliary Output

(24 VAC Maximum)

Separate 24 VAC

Power Source for Auxiliary Output

(24 VAC Maximum)

BO5

Aux

BO5

Aux

24 VAC

Thermostat Power

24 V~

Com

24 V~

Hot

BO5

Aux

BO5

Aux

Independent

Contacts

• Reheat

• Lighting

• On/Off Actuation

• Exhaust Fan

Aux

24 VAC

Thermostat Power

24 V~

Com

24 V~

Hot

Eight-Pole Bottom Connector

4 5

6 7 8

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions 5

Figure 6: Wiring the TEC2627-2 Thermostat for Floating Control

(Pressure-Dependent VAV Cooling Only)

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted on Actuator)

Floating

Actuator

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

FIG:tec2627_clng_only

Figure 7: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control

(Pressure-Dependent VAV Cooling Only)

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted on Actuator)

Proportional

Actuator

FIG:tec2647_clng_only

0 to 10

VDC

UI3 COS

24 V~ Com

24 V~ Hot

AO1

Figure 8: Wiring the TEC2627-2 Thermostat for Floating Control

(Pressure-Dependent VAV Heating/Cooling with Changeover)

FIG:tec2627_htng_clng_chngvr

Changeover

Sensor

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted onActuator)

Floating

Actuator

Supply Air

Temperature Sensor

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions6

Figure 9: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control

(Pressure-Dependent VAV Heating/Cooling with Changeover)

FIG:tec2647_htng_clng_chngvr

Changeover

Sensor

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted on Actuator)

Proportional

Actuator

Supply Air

Temperature Sensor

0 to 10

VDC

UI3 COS

24 V~ Com

24 V~ Hot

AO1

Figure 10: Wiring the TEC2627-2 Thermostat for Floating Control

(Pressure-Dependent VAV Heating Cooling with Changeover and Reheat)

FIG:tec2627_htng_clng_chngvr_rht

Changeover

Sensor

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted onActuator)

Heating/Cooling

and On/Off

Duct Heater

Floating

Actuator

Supply Air

Temperature Sensor

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

BO5-Aux

Figure 11: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control

(Pressure-Dependent VAV Heating/Cooling with Changeover and Reheat)

FIG:tec2647_htng_clng_chngvr_rht

Changeover

Sensor

Room Temperature Control Thermostat

(Minimum and Maximum Position

Adjusted onActuator)

Heating/Cooling

and On/Off

Duct Heater

Proportional

Actuator

Supply Air

Temperature Sensor

0 to 10

VDC

UI3 COS

24 V~ Com

24 V~ Hot

AO1

BO5-Aux

AO2

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions 7

Figure 12: Wiring the TEC2627-2 Thermostat for Floating Control

(Heating/Cooling Hydronic Valve Control)

FIG:tec2627_htng_clng_hdrnc

Room Temperature

Control Thermostat

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

Figure 13: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control

(Heating/Cooling Hydronic Valve Control)

FIG:tec2647_htng_clng_hdrnc

Room Temperature

Control Thermostat

0 to 10

VDC

UI3 COS

24 V~ Com

24 V~ Hot

AO1

Figure 14: Wiring the TEC2627-2 Thermostat for Floating Control

(Heating/Cooling Hydronic Valve Control with Changeover)

FIG:tec2627_htng_clng_hdrnc_chngvr

Floating

Heating/Cooling

Valve

Optional Water

Supply Sensor

Room Temperature

Control Thermostat

Supply Water

Temperature Sensor

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions8

Figure 15: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control

(Heating/Cooling Hydronic Valve Control with Changeover)

FIG:tec2647_htng_clng_hdrnc_chngvr

Proportional

Heating/Cooling

Valve

Optional Water

Supply Sensor

Room Temperature

Control Thermostat

Supply Water

Temperature Sensor

0 to 10

VDC

UI3 COS

24 V~ Com

24 V~ Hot

AO1

Figure 16: Wiring the TEC2627-2 Thermostat for On/Off Control

Two-PipeApplications Four-Pipe Applications

TEC2627onoff

24 V~

Com

24 V~

Hot

or 24 V~

Com

24 V~

Hot

Cooling

Valve

Heating

Valve

Figure 17: Wiring the TEC2627-2 Thermostat for Floating Control

Two-PipeApplications Four-Pipe Applications

TEC2627floating

24 V~

Com

24 V~

Hot

BO1

Cooling

Valve

Heating

Valve

BO2 BO3 BO4

24 V~

Com

24 V~

Hot

BO1

Heating/Cooling

Valve

BO2

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions 9

Table 2: MS/TP Bus Objects (Part 1 of 4)

Point Name Thermostat Point

(Type/Address) Range

Room Temp1, 2 AV 6 -40.0°F/-40.0°C to

122.0°F/50.0°F

Room Temp Override3BV 7 0 = Normal

1 = Override

Outdoor Temperature3, 4 AV 8 -40.0°F/-40.0°C to

122.0°F/50.0°F

Sequence of Operation3MSV 39 1 = Cooling Only

2 = Heating Only

3 = Cooling and Reheat

4 = Heating and Reheat

5 = Cool/Heat Four-Pipe

6 = Cool/Heat Four-Pipe and Reheat

System Mode3MSV 13 1 = Off

2 = Cool

3 = Heat

4=Auto

Occupancy3MSV 12 1 = Resume Schedule

2 = Occupied

3 = Unoccupied

4 = Temporary Occupied

PI Heating Demand5AV 54 0 to 100%

PI Cooling Demand5AV 55 0 to 100%

Supply Temperature5AI 11 -40.0°F/-40.0°C to

122.0°F/50.0°F

AUX (BO5) Status5BI 65 0 = Off

1=On

AUX (BO5) Output3BV 47 0 = Off

1=On

Heating (BO3 and BO4) Valve Status

(TEC2627-2 Model)5MSV 66 For On/Off Control:

1=Open

2 = Closed

For Floating Control:

1 = Stopped

2=Opening

3=Closing

Figure 18: Wiring the TEC2647-2 Thermostat for Proportional Control

Two-PipeApplications Four-Pipe Applications

TEC2647proportional

Heating/Cooling

Valve

24 V~

Com

24 V~

Hot

AO1 AO2

Cooling

Valve

Heating

Valve

24 V~

Com

24 V~

Hot

AO1

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions10

Cooling (BO1 and BO2) Valve Status

(TEC2627-2 Model)5MSV 67 For On/Off Control:

1 = Open

2 = Closed

For Floating Control:

1 = Stopped

2 = Opening

3=Closing

BI1 Status5, 6 BI 62 0 = Deactivated

1 = Activated

BI2 Status5, 6 BI 63 0 = Deactivated

1 = Activated

UI3 Status5, 6 BI 64 0 = Deactivated

1 = Activated

Window Alarm5BI 58 0 = Off

1=On

Filter Alarm5BI 59 0 = Off

1=On

Service Alarm5BI 60 0 = Off

1=On

Occupied Heat Setpoint3, 7 AV 49 40.0°F/4.5°C to

90.0°F/32.0°C

Occupied Cool Setpoint3, 7 AV 50 54.0°F/12.0°C to

100.0°F/37.5°C

Unoccupied Heat Setpoint3, 7 AV 51 40.0°F/4.5°C to

90.0°F/32.0°C

Unoccupied Cool Setpoint3, 7 AV 52 54.0°F/12.0°C to

100.0°F/37.5°C

Keypad Lockout3MSV 40 1 = Level 0

2=Level1

3=Level2

4=Level3

5=Level4

6=Level5

BI1 Configuration3MSV 16 1 = None

2=RemNSB

3=MotionNO

4=MotionNC

5 = Window

BI2 Configuration3MSV 17 1 = None

2 = Door Dry

3 = Override

4 = Filter

5=Service

UI3 Configuration3MSV 18 1 = None

2 = COC/NH

3 = COC/NC

4=COS

5=SS

Menu Scroll3BV 19 0 = No Scroll

1=ScrollActive

Temperature Scale3BV 21 0 = °C

1=°F

Table 2: MS/TP Bus Objects (Part 2 of 4)

Point Name Thermostat Point

(Type/Address) Range

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