TEC2045-4 Wireless Thermostat Controller with Single
Proportional Output and One-Speed Fan Control
Installation Instructions
TEC2045-4
Part No. 24-9890-1109, Rev. B
Issued July 13, 2010
Supersedes May 17, 2010
Application
IMPORTANT: The TEC2045-4 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 that uses 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. TEC2045-4 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'Industrie Canada.
TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-
1
Speed Fan Control Installation Instructions
Installation
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
Note: Allow for vertical air circulation to the
TEC2045-4 Thermostat Controllers.
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 thermostat cover and
open the thermostat 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.
Installing the Thermostat Controller
Follow these steps to install the thermostat controller:
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.
TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
2
Installation Instructions
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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: 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.
Note: For surface-mount applications, use
Figure 3: Securing the
Mounting Base to the Wall
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Figure 4: Removing the Screw Terminal Blocks
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durable mounting hardware such as Molly bolt
anchors that cannot be easily pulled out of the
mounting surface.
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.
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.
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.
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.
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 that are
attached to a disposable adhesive. Figure 4
illustrates the locations of the screw terminal
blocks on the thermostat controller.
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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).
5. Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the cover.
See Figure 5, Figure 6, Figure 7, and Table 2 for
information on wiring the thermostat controllers.
TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
3
Installation Instructions
Figure 5: TEC2045-4 Thermostat Controller
Terminals
Fan
Two-Pole
Blank
24 V~
Hot
24 V~
Com
BO5
Aux
BO5
Aux
Scom
AO1
UI3
BI1
BI2
34
5
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Figure 6: TEC2045-4 Thermostat Controller with Separate Power Source for Auxiliary Contact
Separate 24 VAC
Power Source for Auxiliary Output
(24 VA C Maximum )
BO5
Aux
BO5
Aux
24 VAC
Thermostat Power
Fan
24 V~
Com
0 to 10 VDC
24 VAC
Com
Analog Output
and Valve
24 V~
Hot
AO1
Fan
Power and Fan
Aux Contact
(Isolate d Common)
• Reheat
• Lighting
• On/Of f Actuation
• Exhaus t Fan
Aux
Load
Scom
- OR -
SS (Supply Sensor)
COS (Cha nge Over Sensor)
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
• Windo w
Three-Pole
Left Top Connect or
Right Top Connector
Six-Pole Bottom Connector
11 1
10
14 1516
Table 2: TEC2045-4 Thermostat Controller
Terminals
Terminal
Number
3 Fan Fan On
4 24 V~ Hot 24 VAC from Transformer
5 24 V~ Com 24 VAC from Transformer
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
Terminal
Label
Remote Inputs
Function
(Common)
BI1
BI2 UI3
Voltage-Free
Normall y Heat
Closed Co ntact
Closed Co ntact
FIG:TEC2045_diff
4
TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
Installation Instructions
Figure 7: TEC2045-4 Thermostat Controller with Same Power Source for Auxiliary Contact
Same 24 VAC
Power Source for Auxiliary Output
(24 VA C Maximum )
24 VAC
Thermostat Power
Fan
24 V~
Com
0 to 10 VDC
24 VAC
Com
Analog Output
and Valve
24 V~
Hot
AO1
Fan
Power and Fan
BO5
Aux
BO5
Aux
Aux Contact
(Isolate d Common )
• Reheat
• Lighting
• On/Of f Actuation
• Exhaus t Fan
Aux
Load
Scom
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
Figure 8: Front Cover of TEC2045-4 Thermostat Controller
70.0ºF
Room Temp
FIG:TEC2045_wrlss_frntvw
Status L ED beneath c over
indicat es network sta tu s.
Five keys on the therm ost at controll er
make operation easy and intuitive.
Backlit, plain text
Liquid Crystal Display (LCD)
is easy to read in any con di tion.
Light-Emitting Diodes (LEDs)
indicate system activity .
FIG:TEC2045_sme
Remote Inputs
Setup and Adjustments
BI1
SS (Supply Sensor)
COS (Cha nge Over Sensor)
BI2 UI3
- OR -
Voltage-Free
Normally Heat
Closed Contact
Closed Contact
Thermostat Controller User Interface Keys
The user interface consists of keys on the front cover
(Figure 8). The function of each key is as follows:
• MODE key toggles among the system modes
available, as defined by selecting the appr op ria te
operation sequence in the Installer Configuration
Menu (Off, Heat, Cool, Auto).
• FAN key toggles between ON and AUTO for fan
control. ON energizes the fan all the time and
AUTO operates the fan only on a call for heating or
cooling, for both occupied and unoccupied periods.
TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
• OVERRIDE key overrides the unoccupied mode to
• UP/DOWN arrow keys change the configuration
occupied at the local user interface for the
specified TOccTime. (TOccTime is defined by
selecting the appropriate time period in the Insta ller
Configuration Menu.) If one of the binary inputs is
configured to operate as a remote override co ntact,
this OVERRIDE function is disabled. The
OVERRIDE key also allows access to the Installer
Configuration Menu. See the Configuring the
Thermostat Controller section.
parameters and activate a setpoint adjustment.
Installation Instructions
5
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