Johnson Controls TEC2103-2 Installation Instructions Manual

24-9890-161, Rev. C

Installation Instructions
Issue Date March 2016

TEC2103-2 Networked Multi-Stage Thermostat

Application

The TEC2103-2 thermostat is an N2 networked
thermostat that provides control of multi-stage HVAC
equipment. The TEC2103-2 thermostat provides
exceptional accuracy through the use of a unique
Proportional-Integral (PI) time proportioning algorithm.
The algorithm virtually eliminates temperature offset
associated with traditional, dif f er entia l-bas ed on/ of f
thermostats. The TEC2103-2 thermostat also uses an
adaptive control logic algorithm to control the space
temperature during recovery to minimize overshoot
while providing maximum comfort.

The TEC2103-2 thermostat has Metasys® N2
communication capability. This communication allows
the user to view and adjust parameters from a remote
workstation. Additionally, the menu driven backlit
display, plain text menus, and five keys on the
TEC2103-2 thermostat make operating the thermostat
easy and intuitive.

Note: In this document, Building Automation System
(BAS) is a generic term that refers to the Metasys
Network (Network Control Module [NCM] or N30
Series), and Companion (CPN) supervisory systems.
The specific system names are used when referring to
system specific applications.

Installation

Location Considerations

Locate the TEC2103-2 thermostat:

• on a partitioning interior wall, and 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,
unheated/uncooled areas, or sources of electrical
interference

To install the thermostat:

1. Remove the security screw on the bottom of the
thermostat cover using a Phillips-head
screwdriver. Open the thermostat by pulling on
the bottom side of the thermostat cover
(Figure 1).

2. Unlock the Printed Circuit Board (PCB) by
carefully pressing the locking tabs to the right
(Figure 2). Open the thermostat’s PCB to the left.

3. Pull out approximately 6 in. (152 mm) of wires
from the wall and insert the cable through the
hole in the base.

4. Align the base on the wall, and using the base as
a template, mark the location of the two mounting
holes on the wall. Confirm the thermostat base is
installed with the proper side up.

5. Use the supplied anchors and screws for
mounting on drywall or plaster. Drill two 3/16 in.
(4.7 mm) holes at the marked locations and tap
nylon anchors flush to wall surface (Figure 3).

6. Position base on the wall, insert screws through
mounting base, and fasten into wall anchors. Do
not overtighten screws.

7. Swing the thermostat PCB back to the right to
close. Gently press on the PCB to secure each of
the locking tabs.

8. Pull out the screw terminal blocks using the
pull-tabs on each connector (Figure 4).

Note: The number of terminals on the terminal
blocks varies depending on the TEC model.

© 2016 Johnson Controls, Inc.

Part No. 24-9890-161, Rev. C www.johnsoncontrols.com

IMPORTANT: Use this TEC2103-2 networked

T600_TEC_Remove_Cover

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Tab

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T600_TEC_Mounting_Base

T600_TEC_Terminal_Blocks

multi-stage thermostat only as an operating control.
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.

IMPORTANT : Utiliser ce TEC2103-2
networked multi-stage thermostat uniquement en
tant que dispositif de contrôle de fonctionnement.
Lorsqu'une défaillance ou un dysfonctionnement du
thermostat risque de provoquer des blessures ou
d'endommager l'équipement contrôlé ou un autre
équipement, la conception du système de contrôle
doit intégrer des dispositifs de protection
supplémentaires. Veiller dans ce cas à intégrer de
façon permanente d'autres dispositifs, tels que des
systèmes de supervision ou d'alarme, ou des
dispositifs de sécurité ou de limitation, ayant une
fonction d'avertissement ou de protection en cas de
défaillance ou de dysfonctionnement du thermostat.

Figure 2: Opening the Thermostat PCB

Figure 1: Removing the Thermostat Cover

2 TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions

Figure 3: Mounting the Thermostat Base

Figure 4: Removing the Terminal Blocks

Wiring

!

!

CAUTION: Risk of Electric Shock.
Disconnect the power suppl y before m ak ing
electrical connections to avoid electric shock.

MISE EN GARDE : Risque de décharge
électrique.

Débrancher l'alimentation avant de réaliser tout
raccordement électrique afin d'éviter tout risque de
décharge électrique.

Note: When replacing an existing thermostat,
remove and label wires to identify terminal
designations. When replacing a TEC2103 thermostat,
simply remove the terminal blocks and reinsert onto
the new thermostat.

To wire the thermostat:

1. Strip each wire 1/4 in. (6.35 mm) and connect to
the appropriate terminal according to the
TEC2103-2 thermostat wiring diagram (Figure 5).

2. Gently push excess wire back into the wall, plug
the wall hole with fireproof m aterial to prevent
drafts from affecting ambient temperature
readings, and install screw terminal blocks back
onto the PCB.

3. Reattach the thermostat cover to the installed
base (top side first) and install the security screw
on the bottom.

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.

MISE EN GARDE : Risque de dégâts matériels.
Ne pas mettre le système sous tension av ant d'avoir
vérifié tous les raccords de câblage. Des fils formant
un court-circuit ou connectés de façon incorrecte
risquent d'endommager irrémédiablement
l'équipement.

TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions 3

T

EC

21

0

3-

2

_W

ir

i

ng

Y2

Y1

G

RC

C

RH W1 W2

D1

D2 RS

Scom

5-pole left top connector

3-pole right top
connector

5-pole bottom connector

24 VAC

Thermos tat Power

Y2

Y1

G

RC C

If usi ng the sam e power source
for the thermostat an d heating
loads, install a jumper
across RC and RH.

Heat 1

Heat 2

RH W1

W2

Fan

Cool 1

Energizes on a c all for first stage coo ling
Energizes on a c all for second stage cooling
Energizes fan in accordance with the selected f an mode
24 VAC from equipment tra ns former
24 VAC (common) from equipment transformer
24 VAC for heating stages
Energizes on a c all for first stage heating
Energizes on a c all for second stage heating
Configurable digit al input
Configurable digit al input
Remote room sensor
Sensor common
Auxil iary/Outdoor air sensor
N2 Bus

Function

Y1
Y2

G

RC

C
RH
W1
W2

D1
D2

RS

Scom

OS

N2+, N2-, REF

Terminal

OS

D2

Scom

RS

D1

Remote

Room

Sensor

OS

REF

N2-

N2+

Auxiliary/Outdoor

Sensor

N2-

N2+

REF

Metasys, CPN,

NCM

Cool 2

Figure 5: TEC2103-2 Thermostat Wiring Schematic

Connecting the N2 Bus

To connect the N2 Bus:

1. Observe the polarity when connecting the N2 Bus
wires to the TEC2103-2 thermostat.

Note: An End-of-Line (EOL) is not needed on the

2. Continue this process for each TEC2103-2

N2 Bus at the TEC2103-2 thermostat. However,
one EOL is needed at the BAS (N30, Companion,
Network Control Module).

thermostat using the daisy chain wiring method.

N2 Device Mapping

When adding the TEC2103-2 thermostat to the
Metasys system (Person-Machine Interface [PMI] and
Companion system), you must define the TEC2103-2
thermostat as a Vendor Device (VND). For the NCM,
except as noted in Table 1, Footnote c, do not direct
map any points. Run control of these points through
the Control System (CS) object. See the Setting the
N2 Address (N2 addr) section to set the address for
the thermostat.

4 TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions

Table 1: N2 Bus Objects

32 to 122°F (0 to 50°C)

-40 to 122°F (-40 to 50°C)

Heating SP

a, g

(Occupied Heating SP)

(Occupied Cooling SP)

Setback Heating SP

a, g

(Unoccupied Heating SP)

ADI-5

N2 AO

CSAD

Setback Cooling SP

a, g

(Unoccupied Cooling SP)

ADI-6

N2 AO

CSAD

Minimum Heat SP

ADI-7

N2 AI

CSAD

40°F (4.5°C)

Maximum Heat SPa

ADI-8

N2 AO

CSAD

40 to 90°F (4.5 to 32°C)

Minimum Cool SPa

ADI-9

N2 AO

CSAD

54 to 100°F (12 to 37.5°C)

Maximum Cool SP

ADI-10

N2 AI

CSAD

100°F (37.5°C)

Fana

BD-1

N2 BO

CSBD

0 = Auto, 1 = On

Modea

BD-2

N2 MS O

d, e

CSMS

0 = Off, 1 = Cool, 2 = Heat, 3 = Auto

Occupancya

BD-3

N2 BO

CSBD

0 = Unoccupied, 1 = Occupied

W1 State

BD-4

N2 BI

CSBD

0 = Off, 1 = On

W2 State

BD-5

N2 BI

CSBD

0 = Off, 1 = On

Y1 State

BD-6

N2 BI

CSBD

0 = Off, 1 = On

Y2 State

BD-7

N2 BI

CSBD

0 = Off, 1 = On

G State – Fan

BD-8

N2 BI

CSBD

0 = Off, 1 = On

Temp Units

a, c

(Local Display Only)

BD-9

N2 BO

See
Footnote c.

Occupancy Override

BD-10

N2 BI

CSBD

0 = No Override, 1 = Override

DI1

b, f

BI-1

N2 BI

CSBI

0 = Off, 1 = On

Temp Alarmb

BI-2

N2 BI

CSBI

0 = Normal, 1 = Alarm

DI2

b, f

BI-3

N2 BI

CSBI

0 = Off, 1 = On

Unocc Cooling SP). The overridden setpoint must be released prior to overriding the other setpoint. Additionally, if one

Point Name TEC Point

Type/
Address

Room Tempa
Aux Temp / Outdoor Tempa

Cooling SP

a, g

ADI-1 N2 AI CSAD
ADI-2 N2 AI CSAD
ADI-3 N2 AO CSAD

ADI-4 N2 AO CSAD

N30/NAE
Object
Type

BAS Model
Point Type

Override Range

40 to 90°F (4.5 to 32°C)

54 to 100°F (12 to 37.5°C)

40 to 90°F (4.5 to 32°C)

54 to 100°F (12 to 37.5°C)

0 = °C, 1 = °F

Notes:
a. Commandable.
b. Can be a Change-of-State (COS) alarm to the BAS or N2 Dialer Module (NDM) to initiate a dial-out.
c. On the Metasys NCM system, map BD9 Temp Units Mode as a Binary Output (BO) object with Auto Restore and

Local Control set.
d. The Multiple Command Output (MCO) object is used to schedule multiple Multi-State Objects (MSOs).
e. When defining the N2 MSO object, select TEC Mode from the States Text Menu. Type 4 for the TEC2103-2

thermostat.

f. The state of DI1 and DI2 is communicated over the N2 network even if the digital inputs are configured as None

through the local interface at the thermostat.
g. The Heating and Cooling SP cannot be overridden simultaneously (this also applies to the Unocc Heating SP and

setpoint is overridden, the other setpoint may be automatically adjusted by the TEC2103-2 thermostat to maintain the

minimum deadband between the two setpoints.

TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions 5

The Controller Point Type is the fixed-point definition inside the controller. The BAS Model Point type is the definition inside

If an AD object is overridden by the Metasys system, all local changes attempted through the thermostat keypad for that AD

red until the override is released. For example, if the Metasys system sends a write command to turn System

If there is a Relinquish Default for the setpoints, the Network Automation Engine (NAE) always has an Override for either an

from the TEC causing loss of network communications).

the model file. Use an NCM CS object to retrieve the data.
The most recent N2 command received by any of the N2 Bus Objects listed in Table 1 controls the thermostat.

object are igno
Mode Off, then the occupant selects System Mode On at the TEC keypad, the TEC ends up with the System Mode On;
however, if the Metasys system sends an override command to turn System Mode Off, then the occupant selects System
Mode On at the TEC keypad, the TEC keeps the System Mode Off.

Once an override is released, the AD object may once again be changed through the thermostat keypad, but the thermostat
does not retain any data entered at the TEC keypad during the override.

Only one of the setpoints (Heating Setpoint or Cooling Setpoint) can be overridden at a time.

• The value for Heating SP (ADI-3) and Setback Heating SP (ADI-5) must stay within the limits established in the
controller by Minimum Heat SP (ADI-7 read-only) and Maximum Heat SP (ADI-8).

• The value for Cooling SP (ADI-4) and Setback Cooling SP (ADI-6) must stay within the limits established in the
controller by Minimum Cool SP (ADI-9) and Maximum Cool SP (ADI-10 read-only).

If a setpoint is overridden, the TEC, if necessary, adjusts the other setpoint to maintain the minimum 2 F° deadband
between the setpoints. The setpoints can be spread further apart but can never be adjusted closer than 2 F° apart.

Failure to stay within the limits for a command results in an N2 Negative Acknowledge (NAK) error from the TEC2103-2
thermostat.

Overrides take precedence over any local adjustment or command in the TEC2103-2.
You must not have a Relinquish Default for the setpoints if you want to change them from the thermostat display.

Adjusted value or the Relinquish Default value. You should use Operator Override and Release Operator Override if you
want to command the setpoint and release it to local contr ol.

Once all the NAE commands are released, the Override Status in the Hardware tab should be False. At that time, the user
should be able to change the setpoint from the local display.

All overrides are released automatically after 10 minutes of no communications (for example, network cable is removed

6 TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions