Johnson Controls TEC20x6-2 Series, TEC20x6H-2 Series Installation Instructions Manual

TEC20x6(H)-2 Series Wireless Thermostat Controllers with
Two Outputs, Dehumidification Capability, and Three
Speeds of Fan Control

Installation Instructions

Part No. 24-9890-765, Rev. A

Issued August 31, 2009

Supersedes March 17, 2008

Applications

IMPORTANT: The TEC20x6(H)-2 Series Wireless

Thermostat Controllers are 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.

The TEC Series Wireless Thermostat Controller
System provides wireless networked control of
Heating, Ventilating, and Air Conditioning (HVAC)
equipment on a Building Automation System (BAS)
that enables remote monitoring and programming. This
TEC Series System integrates into a supervisory
controller using BACnet® Internet Protocol (IP) or
BACnet Master-Slave/Token-Passing (MS/TP)
communications.

TEC20 Coordinators allow the supervisory controlle r to
communicate with multiple TEC Wireless Thermostat
Controllers. TEC20x6(H)-2 Series Wireless Thermostat
Controllers control two- or four-pipe 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 wireless mesh network uses ZigBee™ technology
to enable remote monitoring and programming and to
enhance reliability by providing redundant transmission
paths through other TEC Wireless Thermostat
Controllers, creating a resilient, self-healing mesh
network.

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.

RF Transmitters: Compliance Statement (Part 15.19)

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received,
including interference that may cause undesired
operation.

Warning (Part 15.21)

Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s
authority to operate the equipment.

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.

RF Transmitters: Industry Canada Statement

The term IC before the certification/registration number
only signifies that the Industry Canada technical
specifications were met.

Le terme « IC » précédant le numéro d'accréditation/
inscription signifie simplement que le produit est conforme
aux spécifications techniques d'Industry Canada.

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs,

Dehumidification Capability, and Three Speeds of Fan Control

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Mounting

Figure 1: Removing the Cover

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Figure 2: Opening the PCB

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Tabs

Location Considerations

Locate a thermostat controller:

• on a partitioning wall, approximately 1.5 m (5 ft)
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

Allow for vertical air circulation to the thermostat
controller.

Wireless Signal Transmission Range

Line-of-sight transmission ranges between a
TEC20 Coordinator and a TEC Wireless Thermostat
Controller (or between TEC Wireless Thermostat
Controllers) can be less than the recommended
distances shown in Table 1. The effective transmission
range for indoor applications varies because of Radio
Frequency (RF) signal absorption and re flectio n due to
metal obstructions, walls (or floors), and furniture found

in typical building interiors.

Table 1: Recommended Transmission Ranges

Type Distance

Through Walls 10 m (32.8 ft)
Open Space 30 m (98.4 ft)

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

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

PCB
Locking

For detailed information on locating devices for
optimum signal strength, refer to the Wireless Metasys
System Location Guide (LIT-12011294), which is
available on the Johnson Controls® Portal intranet site.

Mounting the Thermostat Controller

Follow these steps to mount the thermostat controller:

1. Use a Phillips-head screwdriver to loosen the
security screw (if installed) on the bottom of the
cover.

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs, Dehumidification Capability, and

2

Three Speeds of Fan Control

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

5. Align the 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 mounting base so that
the arrow on the base points upward to indicate the top
of the thermostat controller.

6. Drill a 5 mm (3/16 in.) hole at each of the two
marked locations, and tap nylon anchors (include d)
flush to the wall surface.

Note: Other means of anchoring the device may be
desired, depending on the wall medium.

7. Position the mounting base on the wall, and use

Figure 3: Securing the

Mounting Base to the Wall

Figure 4: Removing the Screw Terminal Blocks

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the two mounting screws (included) to secure the
base to the surface as illustrated in Figure 3.

Note: Be careful not to overtighten the mounting
screws.

Wiring

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.

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

9. Remove the screw terminal blocks as illustrated in
Figure 4.

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IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the thermostat controller.

When replacing an existing thermostat controller,
remove and label the wires to identify the terminal
functions. When replacing a thermostat controller o f the
same model, simply remove the old screw terminal
blocks and reinsert them onto the PCB of the
replacement thermostat controller.

To wire the thermostat controller:

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

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.

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.

4. Reattach the cover to the mounting base (top sid e
first).

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs, Dehumidification Capability, and
Three Speeds of Fan Control

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

See Figure 5, Figure 6, Figu re 7, and Table 2 for
information on wiring the thermostat controllers.

3

Fan

-H

Three-Pole
Right Top
Connector

BO2

BO5

Aux

BO1/
AO1

UI3

BI1

BI2

Fan

-M

Fan

-L

24 V~

Hot

24 V~

Com

BO4/

AO2

Five-Pole

Left T o p Connector

1 2 3 4 5

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Figure 5: TEC20x6(H)-2 Series

Thermostat Controller Terminals

BO5

BO3

Aux

6 7 8

Eight-Pole Bottom Connector

Scom

RS

9 10 11 12 13 14 15 16

Table 2: TEC20x6(H)-2 Series Thermostat Controller Terminals

Terminal
Number

TEC2016(H)-2
(On/Off Control)

1 Fan-H Fan-H Fan-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
5 24 V~ Com 24 V~ Com 24 V~ Com 24 VAC (Common)
6 BO5 Aux BO5 Aux BO5 Aux Auxiliary Binary Output
7 BO5 Aux BO5 Aux BO5 Aux Auxiliary Binary Output
8 BO3 BO3 Blank Open Heat
9 Blank BO4 AO2 Close Heat

10 Blank BO1 AO1 Open Cool

11 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

Terminal Label by Model Function

TEC2026(H)-2,
TEC2036(H)-2
(On/Off or Floating
Control)

TEC2046(H)-2,
TEC2056(H)-2
(Proportional
0 to 10 VDC Control)

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs, Dehumidification Capability, and

4

Three Speeds of Fan Control

Figure 6: TEC20x6(H)-2 Series Thermostat Controller with Separate Power Source for Auxiliary

Contact

FIG:TEC20x6H2_SEP

Scom

Contact

• COC/NH

= Cold Water

• COC/NC
Normally C ool

= Hot Water

Voltage-Free
Contact

• Door

• Remote
Override

• Filter Alarm

• Service Alarm

Voltage-Free
Contact

• Remote NSB

• Motion

• Window

Separate 24 VAC

(24 VA C Maximum)

BO5

Aux

BO5

Aux

24 VAC

Thermostat Power

24 V~

Com

24 V~

Hot

Power and Fan

Independent
Contacts

• Reheat

• Lighting

• Exhaust Fan

Aux

Fan

-H

Fan

-M

Fan

-L

Scom

Contact

• COC/NH

= Cold Water

• COC/NC
Normall y Cool

= Hot Wate r

Voltage-Free
Contact

• Door

• Remote
Override

• Filter Alarm

• Service Alarm

Voltage-Free
Contact

• Remote NSB

• Motion

• Window

C

(24 VAC Ma ximum )

Power and Fan

BO5

Aux

BO5

Aux

Contacts

• Reheat

• Lighting

• On/Off Actuation

• Exhaust Fa n

Aux

24 VAC

24 V~

Com

24 V~

Hot

Fan

-H

Fan

-M

Fan

-L

Figure 7: TEC20x6(H)-2 Series Thermostat Controller with Same Power Source for Auxiliary Contact

Power Source for Auxiliary Output

• On/Off Actuation

Remote Inputs

Power Source for Auxiliary Output

Same 24 VA

BI1

Independent

BI1

BI2 UI3

- OR -

Supply S ensor
Changeover Sensor

Remote Inputs

BI2

UI3

Voltage-Free

Normally Heat
Closed Contact

Closed Contact

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2
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- OR -

Supply Sensor

Thermostat Power

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs, Dehumidification Capability, and

Three Speeds of Fan Control

Changeover Sensor

Voltage-Free

Normally Heat
Closed Contact

Closed Contact

5

Sample Applications

Figure 8: Wiring TEC2016(H)-2 Thermostat Controllers for On/Off Control

24 V~

Com

24 V~

Hot

BO2

Two -Pip e Applic ations

Com

N.O.

Heating

Valve

24 V~

Hot

BO3

N.C.

Cooling

Valve

Figure 9: Wiring TEC2026(H)-2 and TEC2036(H)-2 Thermostat Controllers for On/Off Control

Two -Pip e Applicat ions

Four-Pipe Applications

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24 V~

Com

24 V~

Hot

or

Com

Hot

Cooling

Valve

or

Heating

Valve

or

Figure 10: Wiring TEC2026(H)-2 and TEC2036(H)-2 Thermostat Controllers for Floating Control

Two -Pip e Applic ations

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2

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3

6

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Com

Hot

BO1

Cooling

Valve

Heating

Valve

24 V~

Com

24 V~

Hot

BO1

Heating/Cooling

Valve

BO2

Figure 8 through Figure 11 show sample applications
for these thermostat controllers.

Four-Pipe Applications

24 V~

24 V~

24 V~

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0
2
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BO2 BO3

BO4

Four-Pipe Applications

TEC20x6(H)-2 Series Wireless Thermostat Controllers with Two Outputs, Dehumidification Capability, and

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Three Speeds of Fan Control

24 V~

24 V~