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TUC03
Configurable Terminal Unit Controller
Product Bulletin
The TUC03 Configurable Terminal Unit Controller is designed
specifically to provide direct digital control of terminal unit
applications with heating and/or cooling coils, an electric heater
and a three-speed or variable speed fan.
These applications include close control units, fan coil units,
unit ventilators and chilling or heating ceiling beam installations.
The device can be configured by the installer, without the need
of a PC and software tool, using a set of on-board dip-switches.
The controller is designed for field installation in a panel or
enclosure or for mounting by original equipment manufacturers
(OEMs) on DIN-rail or directly on a surface.
The space comfort set point, occupancy mode and fan speed
may be adjusted from a wide range of room sensor modules
with options for a digital display.
Communication options are available to enable the controller to
be integrated into an N2 Open or BACnet® network of a building
automation system. The BACnet interface of the controller
complies with the ANSI/ASHRAE Standard 135-2004 for sharing
data other devices on the network.
■■ Field Selectable application type, communication protocol and room module, ■
via dip-switches on controller
Ease of configuration, installation and commissioning - no special tool required.
■■ 230 VAC power supply
■■ 5 VDC / 15 VDC / 24 VAC power supply for Field Devices, directly provided ■
by the controller
Low installed cost for a wide range of terminal unit applications
■■ Modular range of Room Sensor Modules
Suitable for a wide range of installations with wall-mount, flush-mount and hand-held remote control options.
■■ Network Communications Options - N2 Open and BACnet MS/TP
Provides cost effective means to connect the controller to a supervisory system.
■■ BACnet MS/TP with Peer to Peer Communication
Provides cost effective solution for small networks and environmental control of rooms featuring more controllers to be
driven by a single Room Sensors Module.
■■ Configurable using Standard Tools
Suitable for a wide range of applications for environmental control using the commissioning features of any standard
N2 or BACnet software package.
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Easy Configuration and Installation
The TUC03 has a factory programmed application but communication and configuration options (Room Sensor Module
Type, Outputs Management, for example) are field selectable via onboard dip-switches, not requiring computer or any
additional software.
Configuration Dip-Switches
An advanced configuration level for complex operations (such as Peer-to-Peer communication) and the fine tuning of
parameters can be achieved via commissioning.
Onboard Inputs and Outputs (I/Os)
The hardware inputs and outputs have been selected to cover the main requirements for wide cost efficient terminal unit
controls.
The heating and cooling outputs, depending on the configuration settings, connect to the most common valve actuator
types in the market, from low cost On-Off and thermally driven valve actuators to the effective 0-10 VDC modulating valve
actuators.
Relays are provided for direct control of the fan, On-Off valve actuators and/or an electric heater if installed.
Inputs are provided for temperature set point, fan speed override, occupancy sensor or button and shutoff from a window
contact or condensation sensor. Digital Inputs polarity (N.O.; N.C.) is configurable via network.
A series of optional inputs are provided for return air temperature, heating/cooling changeover, coil and discharge air
temperature sensors.
The space temperature sensor may be mounted in the fan coil unit return air or in the room sensor module.
Digital Inputs
Digital Outputs
DI1
Off / Window open
Clg
On/Off Cooling Output (230 VAC Relay)
DI2
Condensing Sensor
Htg
On/Off Heating Output (230 VAC, 10 A Relay)
DI3
Presence Detector
Fan1
Fan Speed 1
DI4
General Purpose, Network Integration
Fan2
Fan Speed 2
OCC
RSM Temporary Occupied Push Button
Fan3
Fan Speed 3
TAc
DAT Cooling Thermal Actuator Output
Analog Inputs
TAh
DAT Heating Thermal Actuator Output
LED
TM LED Output
T1
Room / Return Air Sensor
T2
Change-over Sensor / Contact
T3
Soft-Start Sensor
Analog Outputs
T4
Discharge Air Sensor
Y
0-10 VDC Proportional Cooling Output
FAN
RSM Fan Speed Override Input
W
0-10 VDC Proportional Heating Output
SP
RSM Set-Point Input
VSF
0-10 VDC Variable Speed Fan Output
S
RSM Temperature Sensor (NTC 10K)
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Communicating Infra-Red (IR)
Modules
Non-Communicating Modules ■
(parallel wired)
• Wall Mount with integral IR receiver;
• Wall Mount without display
• Horizontal Flush Mount with integral IR receiver;
• Wall Mount with display
• Vertical Flush Mount with integral IR receiver;
The non-communicating (parallel wired) RSM are
designed for commercial and light industrial applications
and are available with and without LCD display with an
internal temperature sensor and an optional dial allowing
the occupant to adjust the temperature setpoint value or
request a warmer or cooler setpoint.
• IR Receiver with integral sensor and hand-held remote
control.
The fully featured and stylish Infra-Red communicating
RSM are well suited to light commercial, residential
or apartment applications. They feature an internal
temperature sensor, onboard IR receiver and buttons
allowing the occupant to adjust the temperature setpoint
value or request a warmer or cooler setpoint, to override
the speed of a three -speed fan or to manage the terminal
unit operating modes in case a supervisor network is not
available.
The LCD display and the dial on the front of the module
allow the room occupant to view and adjust the space
temperature. Modules with LCD display will automatically
request the temporary occupied (bypass) mode when
the dial is moved during unoccupied periods. On models
without LCD display this function is activated by means
of the temporary occupied button on the left side of the
module.
Certain models also have a dial or button to enable the
occupant to override the speed of a three-speed fan.
LP-RSM003-000C
TM Series
LP-RSM003-001C
RS Series
LP-RSM003-003C ■
and LP-RSM003-004C
Non-communicating (Parallel Wired) ■
Room Sensor Modules
Communicating Infra-Red (IR) ■
Room Sensor Modules
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Auxiliary Sensor (T1÷T4)
The TUC03 Controller provides a set of auxiliary, fixed purpose, analog input T1÷T4 (NTC50KW).
Each analog input features an associated function which is automatically enabled when the sensor presence is detected
on the controller terminals at power up.
Remote Control Temperature
Soft Start
The TUC03 controller offers the option to control a
remotely sensed temperature, different from the one being
provided by connected Room Sensor Module.
The TUC03 controller offers, in case the internal coil
sensor (T3) is connected, the possibility to enable the
soft-start strategy for enhanced occupant comfort.
This result shall be achieved in the following ways,
depending on the connected RSM series.
This strategy, based on the internal coil sensor (T3),
defines the intervention point of the fan depending on the
internal coil temperature avoiding to blow non or partially
conditioned air.
TM Series
Connect the remote NTC10KOhm Sensor to S-Com
Terminals.
The soft-start strategy works as following:
RS Series
Heating
Option not available. There is no possibility to show the
effective controlled temperature on the RS display.
T3 > 38°C, Fan enabled
T3 < 34°C, Fan disabled
RSM Series
Cooling
Connect the remote NTC50kOhm Sensor to T1-Com
Terminals. The LP-RSM003-000C and LP-RSM003-001C
models offer the possibility to configure their display to
show either the local temperature reading or the remote
reading through the TUC03 Controller (T1).
T3 < 18°C, Fan Enabled
Averaging Sensors (LP-KIT003-013C)
A couple of LP-KIT003-013C averaging sensors (NTC50K
Sensors) shall be optionally connected to “T1” providing
an average temperature measurement for large spaces
control ensuring optimal comfort.
Automatic or Manual Changeover (2 pipes)
The TUC03 controller offers the possibility to select the
effective HVAC (Heating/Cooling) Mode in both automatic
or manual mode. In case the changeover sensor (T2)
is connected, the controller automatically selects the
functioning mode in relation to the supplied water
temperature as following:
T2 < 20°C, Effective HVAC Mode = COOLING
T2 > 30°C, Effective HVAC Mode = HEATING
20°C ≤ T2 ≤ 30°C, Dead Band
If the controller doesn’t detect the changeover temperature
sensor (T2) connected, it switches to manual changeover
logic. In this particular case the HVAC mode can be
selected through a dry contact connected to ‘T2’ and
‘COM’ terminals and selected the functioning mode as
following:
T3 > 20°C, Fan Disabled
Discharge Air Limit (COOL only)
The TUC03 controller offers, in case the discharge air
sensor (T4) is connected, the possibility to enable the
blown air temperature limit strategy for an enhanced
occupant comfort.
This strategy, based on the discharge air sensor (T4) and
active in cooling operations only, limits the temperature of
the chilled blown air by proportionally closing the cooling
valve in case the discharge air temperature falls under a
pre-defined comfort discharge air limit setpoint.
The Fan operations are not affected by this strategy.
On-board Power Supply
for Field Devices
In order to achieve a lower installation cost, the TUC03
controller has been designed to provide on its terminals
the power supplies for the most common field devices in
use on terminal unit applications, including:
Room Sensor Modules 5 VDC ±10%, 10 mA;
15 VDC ±5%, 30 mA;
Occupancy Sensors
15 VDC ±5%, 20 mA;
Valve Actuators
24 VAC ±10%, 50/60 Hz, 7 VA
T2-COM = Open Contact, Effective HVAC Mode = COOLING
T2-COM = Closed Contact, Effective HVAC Mode = HEATING
Communicating (IR) Room Sensor Modules offers the
possibility to set the Effective HVAC Mode directly from
their user interface, thru the ‘Mode’ button.
The controller HVAC Mode can be overridden at any time
thru the supervisory network which takes the highest
priority over the local selections.
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Occupancy Comfort with Economy
Fan Control Options
The Terminal Unit controller offers three modes of
operation - occupied (comfort), bypass (temporarily
occupied) and unoccupied (night and weekends).
The controller may be configured to control a singlespeed, two-speed or three-speed fan.
These occupancy modes can be set from an operator
workstation or network controller on a Metasys network,
from another device on the network or controlled by the
room occupants from a local room sensor module.
Set point adjustment can be limited within a certain range
to allow occupants control over their environment, but not
to compromise energy savings.
This option gives maximum flexibility to the local occupant
and allows maximum energy savings when there is no
supervisory system installed.
A “window open” sensor may be connected to the
controller to switch it to the “Energy Hold-off” mode to
avoid energy waste. The controller may also be set to “off”
by the supervisory network or room sensor modules when
the space is not in use.
Where there are multiple Terminal Units in a room,
the controllers may be configured on the BACnet network
to operate in parallel to control the temperature in the
space in unison.
For applications where the cooling coil or pipes are
located in the ceiling, a condensation sensor may be
connected to switch off cooling if water is condensing on
the pipes.
Fan Coil Unit Types
The controller may be configured to control fan coil units
with a single water coil (2 pipe) or with separate heating
and cooling coils (4 pipe).
A variable fan speed proportional output, 0-10 VDC,
is also available as option.
Options are also available to keep the fan running
continuously at low speed or to allow the fan to cycle
on and off as the space temperature reaches the given
setpoint.
The fan speed override command is only active when the
space is occupied and when there is no “Energy Hold-off”
in order to save energy consumption.
The fan control can be activated only once the heating or
cooling element has been activated avoiding to blow not
conditioned air.
If the fan is forced to off, the electric heater control is deactivated and the fan continues to run at low speed for a
short time to prevent over-heating in the fan coil unit.
In normal cooling or electrical heating control operations
the fan will be switched off only after a delay to prevent
over-heating or condensation in the fan coil unit.
Communication Options
The TUC03 Terminal Unit Controller provides N2 Open
and BACnet MS/TP communication options that are field
selectable via dip-switch for connection to a supervisory
network, including the Metasys M3i Workstation and
the NAE Network Automation Engine that integrates
the controller into a facility-wide building management
network.
Two pipe fan coil units may be controlled as heating or
cooling only, or may be configured to change control from
heating to cooling depending on an external change-over
signal.
When an electric heater is installed, the heater may be
configured as the heat source in a two pipe fan coil unit
with a chilled water supply or as supplemental heat in
a 2 pipe fan coil unit with a hot water supply or a 4 pipe
fan coil unit in heating mode.
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Automatic Binding
The TUC03 controller with BACnet Communication, features an automatic binding function.
This option, when selected, activates a pre-defined Peer-to-Peer communication network allowing to share information
points between controllers.
This feature enables to have a BACnet “client” device connected to the RSM, sharing the RSM information points
(Details as following) with up to (5) five expected BACnet “server” devices:
• Space Temperature;
• Temperature Setpoint;
• Occupancy Mode;
• HVAC Mode;
• Fan Speed.
Whenever a “server” device detecs a valid space temperature sensor connected to its terminals (T1 or S), its value takes
the priority over the value being passed by the “client” device through the Peer-To-Peer communication.
Temperature Setpoint, Occupancy Mode, HVAC Mode and Fan Speed will in any case being provided by the “client”
device.
The automatic binding network structure is pre-defined in the source controller and strictly depends on the “client” MAC
address. In case any of the “server” devices is missing on the network it will not affect the communication between the
others and the information of the missing device will be reported through the network.
A set of Binary Input objects it is also available for alarms reporting purposes, including the expected “server” devices
to be effectively present and communicating on the network.
As per BACnet ANSI / ASHRAE Standard 135-2004 the “client” device MAC address has to be set within the range 1
to 127 while “server” devices will have MAC address equal or greater than 128.
The pre-configured Peer-to-Peer automatic binding network structure is defined as following shown.
Automatic Binding Network Structure
MAC Address
Client
Server_1
Server_2
Server_3
Server_4
Server_5
5
148
149
150
151
152
6
153
154
155
156
157
7
158
159
160
161
162
8
163
164
165
166
167
9
168
169
170
171
172
10
173
174
175
176
177
11
178
179
180
181
182
12
183
184
185
186
187
13
188
189
190
191
192
14
193
194
195
196
197
15
198
199
200
201
202
16
203
204
205
206
207
17
208
209
210
211
212
18
213
214
215
216
217
19
218
219
220
221
222
20
223
224
225
226
227
21
228
229
230
231
232
22
233
234
235
236
237
23
238
239
240
241
242
24
243
244
245
246
247
25
248
249
250
251
252
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Dimensions
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Wiring Diagrams
TUC03 230 VAC Power Supply
TUC03 Wiring Diagram
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TUC03 Jumper Configuration
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Ordering Codes
Codes
Description
TUC0301-2
230 VAC N2 / BACnet Terminal Unit Controller, No Cover
TUC0311-2
230 VAC N2 / BACnet Terminal Unit Controller
LP-RSM003-000C
Room Sensor Module, Wall Mount
LP-RSM003-001C
Room Sensor Module, Horizontal Flush Mount
LP-RSM003-003C
IR Receiver w/ Integrated Temperature Sensor
LP-RSM003-004C
IR Hand held remote control unit
TM-2140-0000
Room Sensor Module, temperature sensor only
TM-2150-0000
Room Sensor Module, occupancy button and LED
TM-2160-0000
Room Sensor Module, 12-28 °C setpoint dial, occupancy button and LED
TM-2160-0002
Room Sensor Module, 12-28 °C setpoint dial, occupancy button and LED, fan speed override
TM-2160-0005
Room Sensor Module, +/- setpoint dial, occupancy button and LED
TM-2160-0007
Room Sensor Module, +/- setpoint dial, occupancy button and LED, fan speed override
TM-2190-0000
Room Sensor Module, 12-28 °C setpoint dial
TM-2190-0005
Room Sensor Module, +/- setpoint dial
RS-1180-0000
Room Sensor Module, 12-28 °C setpoint dial
RS-1180-0005
Room Sensor Module, +/- setpoint dial
RS-1180-0002
Room Sensor Module, 12-28 °C setpoint dial, fan speed override
RS-1180-0007
Room Sensor Module, +/- setpoint dial, fan speed override
LP-KIT003-010C
Remote Temperature Sensor, NTC 50k Ω, Bulb, 80 cm leads
LP-KIT003-011C
Remote Temperature Sensor, NTC 50k Ω, Wall Mount, Decorative box
LP-KIT003-012C
Remote Temperature Sensor, NTC 50k Ω, Duct Mount
LP-KIT003-013C
Average Temperature Sensor, NTC 50k Ω, Wall Mount, Decorative box
HX-9100-8001
Condensation (Dew Point) sensor
TE-9100-8502
Remote Temperature Sensor, NTC 10k Ω, Bulb, 150 cm leads
TS-9104-8700
Remote Temperature Sensor, NTC 10k Ω, Ceiling
Room Sensor Modules with LCD Display and Integrated IR Receiver
Room Sensor Modules without Display - 80 mm x 80 mm
Room Sensor Modules with Backlit LCD Display - 80 mm x 80 mm
Accessories
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Technical Specification
Products
TUC03x1-2 - TUC03 Configurable Terminal Unit Controller
Power Requirements
230 VAC ±10%, 50/60 Hz, 12 VA (Including 24VAC (7VA) Power Supply for Actuators).
Maximum current input 15A (Including I/Os).
External Fuse
External fuse or circuit breaker recommended
Ambient Operating Conditions
0 to 50 °C - 10 to 90% RH (non condensing)
Ambient Storage Conditions
-20 to 70 °C - 10 to 95% RH (non condensing)
Housing Protection
Plastic box
Material: ABS + polycarbonate, UL94-V0 flammability rating
Protection Class: IP20 CEI/EN60529
Power Supply Output for Actuators
24 VAC ±15%, 50/60 Hz, 7 VA
Power Supply Output ■
for Room Sensor Modules
5 VDC ±10%, 10 mA
15 VDC ±5%, 30 mA
Power Supply Output ■
for Active Sensors
15 VDC ±5%, 20 mA
Mounting
DIN Rail or 2 Screws
Dimensions (H x W x D)
56 x 145 x 145 mm Shipping Weight
0.8 Kg
Terminations
Screw Terminals. Max. 1 x 2.5 mm2 (24 - 12 AWG) wires
Analog Inputs
10-bit resolution - Not isolated
Channel
Type
T1÷T4
NTC50K (50K @ 25 °C) -10 ÷ 89 °C ±3%
S
0 ÷ 10 VDC (Linear) 0 ÷ 40 ±0,5 °C (RS Series)
NTC10K (10K @ 25 °C) 0 ÷ 40 °C ±0,2 °C (TM Series)
Fan, SP
0 ÷ 10 VDC ±0,5 °C (RS Series)
0 ÷ 5 VDC ±0,05 V (TM Series)
Digital (Binary) Inputs
Voltage Free Contacts
Digital (Binary) Outputs
Channel
Type
TAh, TAc
TUC03x1-2 (230 VAC):
230 VAC, 0,29A Max Triac (Fused, Max 0.4A)
24 VAC, 0,3A Max Triac (Fused, Max 0.4A)
Clg,
Htg
(Fan speeds)
SPST 6(3)A 230VAC Relay (Fused, Max 6A)
SPST Max 10A 230VAC Relay (Not Fused)
Analog Outputs
0 ÷ 10 VDC, 5 mA - Not Isolated ±0,1 VDC
BACnet Communication
B-ASC - BACnet® Appplication Specific Controller
MS/TP (EIA-485)
®
Compliance
Johnson Controls, Inc., declares that these products are in compliance with the essential
requirements and other relevant provisions of the EMC Directive 2004/108/EC and
Low Voltage Directive 2006/95/EC
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local
Johnson Controls office or representative. Johnson Controls shall not be liable for damages resulting from misapplication or misuse of its products.
Building Efficiency
Headquarters: Milwaukee, Wisconsin, USA
Branch Officies: Principal Cities World-wide
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.
All other marks herein are the marks of their respective owners.
© Copyright 2011 Johnson Controls, Inc. All rights reserved. Any unauthorized use or copying is strictly prohibited.
www.johnsoncontrols.com