Johnson Controls TEC22 2-3 LonWorks Series, TEC2202-3 LonWorks, TEC2262-3 LonWorks Installation Instructions Manual

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat

Installation Instructions

Part No. 24-9890-471, Rev. —

Issued September 8, 2006

Applications

The TEC2202-3 non-programmable and
TEC2262-3 programmable thermostats are
L

ONWORKS® networked devices that provide control of

heat pump equipment. The technologically advanced
TEC22x2-3 thermostats feature a Building Automation
System (BAS) L

ONWORKS network communication

capability that enables remote monitoring and
programmability for efficient space temperature control.

IMPORTANT: The TEC22x2-3 thermostat is
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.

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 equipm ent 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.

Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.

Installation

Location Considerations

Locate the TEC22x2-3 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
TEC22x2-3 thermostat.

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.

Canada

This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation

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Figure 1: Removing the Thermostat Cover

Instructions

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.

PCB
Locking
Tabs

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Figure 2: Opening the Thermosta t PCB

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 (include d
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. Pull the pull tabs on each of the connectors and
remove the screw terminal blocks as illustrated in
Figure 4.

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Figure 4: Removing the Screw Terminal Blocks

Wiring

When an existing thermostat is replaced, remove and
label the wires to identify the terminal functions. When
a TEC22x2-3 thermostat is replaced, sim ply re m ov e
the old screw terminal blocks and reinsert them onto
the PCB of the replacement thermostat.

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.

Figure 3: Securing the Thermostat

Mounting Base to the Wall

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation Instructions2

IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the TEC22x2-3 thermostat.

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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 Figure 5 and Figure 7.

Note: For more details on wiring the
L

ONWORKS network, refer to the

L

ONWORKS Network Layout Technical Bulletin

(LIT-1162150).

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

ONWORKS communication wires to

the LON terminal block. See Figure 5.
Note: If inserting multiple wires into the terminals,

be sure to properly twist 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.

Three-Pole
Right Top
Connector

RH W1

C

56

Scom

OS

O/B

8

7

MS

LW

ON ORKS

Bus Te rminals

Five-Pole
Left Top Connector

Y2

1

Y1 G

23

RC

4

Seven-Pole Bottom Connector

Aux

DI1 DI2 RS

Table 1: Terminal Identification (See Figure 5.)

Number Label Function

1Y2Energizes second-stage compressor

2Y1Energizes first-stage compressor on

3GEnergizes fan in accordance with

4RC24 VAC from equipment transformer
5C24 VAC (Common) from equipment

6RH24 VAC for heating stage
7W1Energizes on a call for auxiliary heat.
8 O/B Energizes reversing valve.

10 Aux Auxiliary output
11 DI1 Configurable Digital Input 1
12 DI2 Configurable Digital Input 2
13 RS Remote Room Air Temperature

14 Scom Sensor Common
15 OS Auxiliary/Outdoor Air Sensor

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2

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16 MS Remote Monitoring Supply

Blank Blank L

on a call for heating or cooling.

a call for heating or cooling.

selected fan mode.

transformer

Configurable to energize valve on a
call for heating or a call for cooling.

Sensor

Temperature Sensor

ONWORKS Bus

10

11

12

13

14

15 16

Figure 5: TEC22x2-3 Thermostat Terminals

Y2 Y1

Comp 2

Thermostat Power

Comp 1

24 VAC

G

Fan

RC

RH W1

C

Aux

Heat

If using the same power source
for the the r m ostat and heating loads,
install a j um per across RC and RH .

Figure 6: TEC22x2-3 Thermostat General Application

O/B

Rev

Valve

Aux

Aux

DI1

Isolated Contact

• Lighting

• On/Off Ac t uation

• Exhaus t Fan
RS

DI2

Remote

Room

Sensor

Scom

Air Sensor

OS

Auxiliary/

Outdoor

Bus Terminals

MS

Remote

Monitoring

Supply

Temperature

Sensor

LW

ON ORKS

Supervisory

Controller

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TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation Instructions 3

Y2 Y1

G

RC C RH W1 O/B

R3

R2

R1

Separate 24 VAC

Transformer

R3-1

Y2 Y1

R1-1R2-1

G

Heat Pump Terminal In t erface

Figure 7: VDC Switching Application for Heat Pumps

Connecting the LONWORKS Network

The wiring rules for the LONWORKS network differ from
the wiring rules for the Metasys® N2 Bus and the
BACnet® MS/TP Bus. For more details on wiring the
LONWORKS network, refer to the LONWORKS Network
Layout Technical Bulletin (LIT-1162150).

To connect the thermostat to the LONWORKS network:

1. Connect the L

ONWORKS network terminal block on the

L
thermostat (Figure 5, Figure 6, Figure 7, and
Figure 8).

ONWORKS network wires to the

LW

ON ORKS

Bus Te rminals

R4

T o Auxiliary

Heat Circuit

Note:

Use 24 VAC

interface relays R1-1,

R4-1

RC

R2-1, R3-1, and R4-1
(provided by the user).

O/B

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Note: There is no polarity when connecting the

ONWORKS network wires to the thermostat; however,

L
we recommend keeping the polarity consistent
throughout the network.

2. After the L

ONWORKS network wires are connected

to the first thermostat, continue in a daisy-chained
fashion to the next device.

Note: The L

ONWORKS network wiring must be twisted-

pair lines.
Do not run the L

ONWORKS network 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).

Supervisory

Controller

LW

ON ORKS

Network Wires

ON ORKS

LW

Network

Terminal Block

Twist wires together
before inserting them into
the terminals.

Figure 8: Thermostat to Network Connection

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation Instructions4

ONWORKS network requires proper termination

The L
and biasing at the end of a segment (a segment is a
physically continuous length of wire). The thermostat is
not equipped with the ability to provide this termination;
therefore, it cannot be located at the physical end of a

ONWORKS network segment unless a terminator is

L
attached. Refer to L

ONWORKS Network Layout

Technical Bulletin (LIT-1162150) for end-of-line

solutions.

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Setup and Adjustments

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Thermostat Operation Overview

Backlit, pl ain text

LCD is easy to read

in any condi t io n.

LEDs indicate
system activity.

Five keys on the therm ostat
make operation easy and intuitive.

Figure 9: Front Cover of Thermostat

Thermostat User Interface Keys

The TEC22x2-3 thermostat user interface consists of
five keys on the front cover (as illustrated in Figure 9).
The function of each key is as follows:

•Use the YES/SCROLL key to:

- confirm menu selections and to advance to the
next menu item

- stop the Status Display Menu fr om scrolling
and to manually scroll to the next parameter on
the menu

Note: When the thermostat is left unattended for
45 seconds, the thermostat display resumes scrolling.

•Use the NO key to decline a parameter change and
to advance to the next menu item.

•Use the MENU key to:

- access the Main User Menu or to exit the menu

(See the Main User Menu section.)

Room Temp

70.0ºF

ES NO

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Backlit Liquid Crystal Display (LCD)

The TEC22x2-3 thermostat includes a 2-line,
8-character backlit display. Low-level backlighting is
present during normal operation, and it brightens wh en
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 AUX HEAT LED is on when auxiliary heat is
on.

•The HEAT PUMP LED is on when the heat pump
compressor is on.

Programming Overview

There are three menus used to view, program, and
configure the TEC22x2-3 thermostat.

The Status Display Menu is displayed during normal
thermostat operation. This menu continuously scrolls
through the following parameters:

• Room Temperature

• Clock (TEC2262-3 only)

• System Mode

• Occupancy Status – Occupied/Unoccupied/
Override

• Outdoor Temperature – An outdoor air temperature
sensor must be connected.

• Applicable Alarms – The backlight lights up as an
alarm condition is displayed.

Note: Press the YES/SCROLL key to temporarily stop
this menu from scrolling.

The Main User Menu is used to access and change
the basic operating parameters of the thermostat.
Access this menu by pressing the MENU key during
normal thermostat operation.

- access the Installer Configuration Menu or to
exit the menu (See the Configuring the
TEC22x2-3 Thermostat section.)

•Use the UP/DOWN arrow keys to change the

The Installer Configuration Menu is used to set up
the thermostat for application-specific operation. To
access this menu, press and hold the MENU key for
approximately 8 seconds.

configuration parameters and to activate a setpoint
adjustment.

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation Instructions 5

Configuring the TEC22x2-3 Thermostat

The TEC22x2-3 thermostat comes from the factory
with default settings for all configurable parameters.
The default settings are shown in Table 2. To
reconfigure the parameters via the thermostat, follow
the steps in this section.

1. To access the Installer Configuration Menu, press
and hold the MENU key for approximately
8 seconds.

2. Once the Installer Configuration Menu begins,
press the NO key to scroll through the parameters
listed in Table 2.

3. When the desired parameter is displayed, use the
YES key to choose the desired selection option.

4. Press the YES key and then the NO key to
continue scrolling through the parameters.

To exit the Installer Configuration Menu any time, press
the MENU key, and at the exit prompt, press the YES
key. To pass over a parameter without changing it,
press the NO key.

When the thermostat is in the Installer Configuration
Menu and left unattended for approximate ly 8 seconds,
the thermostat reverts to the Status Display Menu.

For additional information on commissioning and
configuring thermostats, adding thermostats to a
Network Automation Engine (NAE), thermostat
mapping, and remote thermostat commanding, refer to

TEC226x-3 and TEC220x-3 Series L

ONWORKS®

Network Configurable Staged Thermostats Technical
Bulletin (LIT-12011196).

Configuring the Thermostat’s Neuron® Identification

Press and hold the UP/DOWN arrow keys
simultaneously for 5 seconds to broadcast the
thermostat’s Neuron Identification on the L

ONWORKS

network.
If the cover is removed, you can see a green LED

under the LON board flash when the thermostat
broadcasts the Neuron ID. The Neuron ID is on a label
on the Echelon® chip.

You cannot send the Neuron ID while in the Installer
Configuration menu.

Configuring Inputs DI1 and DI2

When DI1 and DI2 are configured for an alarm
condition, an alarm condition is displayed locally when
the input is closed. An alarm message is included on
the scrolling Status Display Menu, and when the
message is displayed, the backlight momentarily
lights up.

Table 2: Installer Configuration Menu (Part 1 of 5)

Parameter

Description and Default Selection Options
Appearing
on Display

DI1

1

Configuration of Digital Input 1.

Default: None

(None): No function is associated with an input.
(Service): A Service alarm is displayed on the thermostat when the

input is energized. This input can be tied into the air conditioning unit
control card, which provides an alarm should there be a malfunction.

(Filter): A Filter alarm is displayed. This alarm can be connected to
a differential pressure switch that monitors a filter.

(RemOVR): Temporary occupancy request via a remote input. This
override function is controlled by a manual remote occupancy
override. When enabled, this condition disables the override
capability of the thermostat.

(RemNSB): Remote Night Setback (NSB) via a time clock input, an
occupancy sensor, or from a voltage-free contact.
Contact open = Occupied; contact closed = Unoccupied.

Each input can be configured to the Selection Options
included in Table 2.

TEC22x2-3 LONWORKS® Networked Heat Pump Thermostat Installation Instructions6