Johnson Controls TEC2045-2 Installation Instructions Manual

TEC2045-2 Wireless Thermostat Controller with Single
Proportional Output and One-Speed Fan Control

Installation Instructions

TEC2045-2

Part No. 24-9890-757, Rev. —

Release 4.0

Issued March 17, 2008

Application

IMPORTANT: The TEC2045-2 Wireless

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.

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. TEC2045-2 Wireless Thermostat
Controllers control 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 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.

TEC2045-2 Wireless Thermostat Controller with Single Proportional Output and One-

1

Speed Fan Control Installation Instructions

Mounting

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.

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Figure 1: Removing the Cover

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
Tabs

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.

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

Figure 2: Opening the PCB

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.

TEC2045-2 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control

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Installation Instructions

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7. Position the mounting base on the wall and use 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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Figure 3: Securing the

Mounting Base to the Wall

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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Figure 4: Removing the Screw Terminal Blocks

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).

TEC2045-2 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
Installation Instructions

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

Three-Pole

2

Left Top Connect or

24 V~

Fan

Hot

34

Two-Pole
Right Top Connector

24 V~

Com

BO5

Aux

5

BO5

Aux

67

Six-Pole Bottom Connector

Blank

AO1

10

11 1

BI1

Scom

BI2

14 1516

Figure 5: TEC2045-2 Thermostat Controller

Terminals

UI3

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Table 2: TEC2045-2 Thermostat Controller

Terminals

Terminal
Number

Terminal
Label

Function

3 Fan Fan On
4 24 V~ Hot 24 VAC
5 24 V~ Com 24 VAC (Common)
6 BO5 Aux Auxiliary Binary Output
7 BO5 Aux Auxiliary Binary Output
10 AO1 Open Cool
11 Blank Close Cool
12 BI1 Configurable Binary Input 1
14 Scom Sensor Common
15 BI2 Configurable Binary Input 2
16 UI3 Configurable Universal Input 3

Remote Inputs

Voltage-Free
Contact

• Door

• Remote
Override

• Filter Alarm

• Service Alarm

Voltage-Free
Contact

• COC/NH
Normall y Heat
Closed Contact
= Cold Water

• COC/NC
Normall y Cool
Closed Contact
= Hot Water

Analog Output

and Valve

0 to 10 VDC
24 VAC
Com

24 VAC

Thermostat Power

Power and Fan

24 V~

AO1

Hot

Separate 24 VAC

Power Source for Auxiliary Output

(24 VAC Maxi mum )

24 V~

Com

Fan

Fan

BO5
Aux

BO5
Aux

Aux
Load

Voltage-Free
Contact

• Remote NSB

• Motion

• Window

Independent
Contacts

BI1

Scom

BI2 UI3

- OR -

SS (Suppl y Sensor)
COS (Ch ange Over Se nsor)

• Reheat

• Lightin g

• On/Off Actuation

• Exhaus t Fan

Figure 6: TEC2045-2 Thermostat Controller with Separate Power Source for Auxiliary Contact

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TEC2045-2 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control

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Installation Instructions