TCS UbiquiSTAT User manual

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The UbiquiSTAT ™ is a feature rich, multi-
purpose touchscreen thermostat for a
wide variety of applications. This series of
thermostats can be configured for a variety
of conventional, heat pump, and modulating
control applications.
UbiquiSTAT TM
BACnet® is a registered
trademark of ASHRAE.
Commercial BACnet Thermostat
Models:
US4010 - Single-Stage RTU / Zoning Thermostat
US4020 - Multi-Stage RTU Thermostat
US4040 - Advanced RTU Thermostat
US4050 - Advanced Application Thermostat
Wed Feb 1, 2017 09:20AM
|PRODUCT MANUAL

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TABLE
OF CONTENTS
Manual Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1 Mounting and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1 Remote Temperature Sensor Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2 Remote Analog Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.3 Powering the UbiquiSTAT™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Room Temperature Sensor Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Additional Remote RTD Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Analog Input (AI) Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Digital Inputs (DI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.5 Digital Outputs (DO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6 Analog Outputs (AO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 On Screen Quick Start Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Home Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Service Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4 About Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 Advanced Feature Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6 Checkout and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1 Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Appendix A BACnet Object List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Appendix B UbiquiSTAT™ Wall Mount Template . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Manual Key
Caution: Requires special attention.
Note: Something you should know.
Model Specific Icons: Denotes features available only on specific models. If no icons are shown, the feature applies
to all models.
US4010 US4020 US4040 US4050
The following symbols are used throughout this document. Their meanings are as follows:

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Features
FEATURES
• Configurable P+I relay stage anticipator
• Setpoint setback based on DI
• Network upgradeable firmware
• Built-in equipment protection delays and
sequencing
• Programmable fan control
- Auto/on/cool/recirculation modes for occupied
and unoccupied
- Adjustable recirculation
- Fan proving with automatic retries
• User management controls
- Occupancy override enable/disable
- Setpoint adjust range limit
- Optional access code locks out on-screen
programming
• Outdoor air heating and cooling lockouts
• Discharge air protection limits
• Fahrenheit or Celsius temperature display
• External time clock input/output
• Adjustable delay on power up and occupancy
• Stand-alone or network operation
• Backup & Restore of all settings (DM-BR-B)
• Powerful touchscreen user interface
- Internal BACnet explorer
- Quick start wizard
- System test screen for rapid commissioning
- Highly detailed status reporting and diagnostics
- Service status indication with custom messaging
- Calibration of temperature inputs
- 4.3” color touchscreen
• BACnet BTL Listed (B-ASC)
• Full-featured BACnet scheduling (SCHED-I-B)
- 5 Heat/Cool setpoint groups
• Includes all TCS SZ Series thermostat features
- Includes many additional features and
enhancements
• 4 temperature inputs (1 built-in, 3 remote)
- Outdoor, discharge, remote room
- Configurable weighted averaging of built-in and
remote room
• Conventional or heat pump control
• Discharge setpoint reset on modulating heat/cool
control
• Configurable Smart Recovery™
Feature / Model 4010 4020 4040 4050
Stage Configuration: Total stages #
[Heat # / Cool # / Configurable #] 2 [1/1/0] 6 [2/2/2] 6 [2/2/2] 6 [2/2/2]
Analog Inputs / Outputs (0-20mA or 4-20mA) 0/2 0/0 1/1 2/2
Mixed air on T1 (when using built-in sensor) --

Model Specific Features:

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• Built-in application programming with simple configuration
• Advanced fan control
- Recirculation mode to meet minimum fresh air requirements
• Demand response setback
• Door status response setback
Applications
Feature / Model 4010 4020 4040 4050
Conventional staging:
heat / cool / selectable 1/1/0 2/2/2 2/2/2 2/2/2
Heat pump control: compressors / aux heat
• Emergency heat
• Cold climate automatic auxiliary heat switch-
over w/compressor lockout
1/1 2/2 2/2 2/2
Analog Inputs
CO²control - - 
Dehumidification control - - - 
Pressure control ----
General purpose monitoring - - 
Analog outputs
Hot and chilled water valve control - - - 
Modulating zone damper control w/reheat ---
Economizer control - - 
Demand ventilation (CO²control) - - 
Digital or Analog heat/cool changeover based
control --

Hot deck / Cold deck zone control --

Mixing valve control - - - 
Common application set:
Model specific application set:
APPLICATIONS

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The UbiquiSTAT product family is a feature rich, multi-purpose BACnet thermostat with a touchscreen interface. It can
be configured for conventional heating and cooling, heat pump, or modulating control applications, and has a number
of heat/cool setpoint groups, and a number of output stages (specific to UbiquiSTAT model). It contains many standard
features from the TCS SZ series thermostats, as well as enhancements and new features.
PRODUCT DESCRIPTION
MOUNTING AND ASSEMBLY
Product Description
1 Mounting and Assembly
The UbiquiSTAT™is designed for wall mounting using two #6 sheet metal screws, either over a 2”x4” or 4”x4” junction
box, or directly to the wall. For best results, the thermostat should be mounted on an interior wall that represents a normal
room environment, at a height of approximately five feet from the floor. For best temperature measurement accuracy,
avoid areas exposed to direct sunlight, unusual heat or cool sources, open doors and windows, unventilated locations,
and hot or cold air from diffusers. If using a remote room sensor, the sensor should be mounted in the same manner. The
thermostat should be mounted in an area which is accessible for adjusting settings.
The UbiquiSTAT™consists of a base (containing relays and terminal blocks) and a front cover (containing touchscreen
and all other circuitry). These two components are tethered together in order to prevent accidentally dropping of the front
cover and to prevent combining the base and front cover of two different UbiquiSTATs ™(each pair is factory calibrated
and serialized together).
When mating the front cover with the base, be sure to check that no wiring interferes with the cover, and no bare wires are
exposed. Check that the tether is clear of the snap, and is completely inside the enclosure.
To remove the UbiquiSTAT™cover, insert a small plastic pry tool between the front cover and base on the bottom of the
thermostat. Run the tool along the seam until the halves separate.

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2 Wiring
The UbiquiSTAT™uses standard terminal designations for wiring. See figures 1a - 1d for the wiring diagram
corresponding to your UbiquiSTAT™model.
2.1 REMOTE TEMPERATURE SENSOR WIRING
There are three remote sensor inputs (T1, T2, T3) with a range of -40F to 160F. These can be used for remote room
sensing, discharge air temperature, outdoor air temperature, and mixed air temperature. See sections 3.1 and 3.2 for
information on configuring temperature inputs.
Use 18 AWG shielded twisted-pair wire grounded at the sensor mounting location. Sensor wiring runs of 250 feet are
attainable if properly shielded wire is used and the installation environment is free of electrical noise. Sensor wire should
be kept at least five feet away from line voltage wiring. The UbiquiSTAT™accepts 2-wire platinum RTD temperature
sensors. TCS provides a wide assortment of temperature sensors. Please consult tcsbasys.com for a full product listing.
When using remote sensors, the calibration may need to be adjusted. See section 4.5.2.2 for more information.
2.2 REMOTE ANALOG SENSOR WIRING
Depending on UbiquiSTAT model, there are uo to two current sensing inputs (AI1, AI2) configurable as 0-20mA or
4-20mA for connecting remote sensors. These inputs can be used for any current-based sensors such as CO² and
humidity.
Use 18 AWG shielded twisted-pair wire grounded at the sensor mounting location. Sensor wire should be kept at least
five feet away from line voltage wiring. TCS provides a wide assortment of 4-20mA sensors and transmitters. Please see
tcsbasys.com for a full product listing.
2.3 POWERING THE UBIQUISTAT™
The UbiquiSTAT is powered from 24 VAC +15% / -5% and draws up to 10 VA.
A dedicated power source (transformer) must be used when the UbiquiSTAT™is wired for communications to avoid
ground loop issues between equipment transformers. Several thermostats may be powered from the same transformer,
provided that the transformer has sufficient power and the power polarity is maintained.
Caution: Do not connect to 120 VAC. Doing so will damage the UbiquiSTAT™.
Caution: When multiple TCS Basys Controls devices are using a single transformer, the polarity of the power
wiring must be maintained or damage will occur. All TCS devices are half-wave rectified and have common
return paths.
When the UbiquiSTAT™is used as a stand-alone thermostat without communications, the equipment
transformer may be used to power it. To do this, install a jumper between the “R” and “+24” terminals. The “24-”
terminal must then be connected to the common side of the equipment transformer.
WIRING

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US4050
WIRING DIAGRAM (US4050) Figure 1a

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WIRING DIAGRAM (US4040)
1
3
5
2
4
6
7
For communication wiring, use
3-conductor, twisted/shielded 22 AWG.
24 VAC transformer. See powering
instructions.
Control signals may be up to nominal 28
VAC from equipment transformer.
Dry contact. Must not be powered.
GND terminal is used for self powered 4-20mA
inputs and outputs.
For sensor input wiring, use
2-conductor, twisted/shielded 18 AWG.
4-20mA transmitter, sensor input wiring 18
AWG, twisted, shielded pair. AI1 is shown as
Self-Powered sensor. This input can be used
for either 2-wire or self powered.
8
4-20 mA output 600 ohm max. Do not power
actuator with power from the thermostat. The
thermostats are half-wave rectified, whereby
the power ground is common with the signal
ground.
Figure 1b
US4040
Unused terminal on this model.
9

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WIRING DIAGRAM (US4020)
1
3
5
2
4
For communication wiring, use
3-conductor, twisted/shielded 22 AWG.
24 VAC transformer. See powering
instructions.
Control signals may be up to nominal 28
VAC from equipment transformer.
Dry contact. Must not be powered.
For sensor input wiring, use 2-conductor,
twisted/shielded 18 AWG.
Figure 1c
US4020
Unused terminal on this model.
9

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WIRING DIAGRAM (US4010)
1
3
5
2
4
6
For communication wiring, use
3-conductor, twisted/shielded 22 AWG.
24 VAC transformer. See powering
instructions.
Control signals may be up to nominal 28
VAC from equipment transformer.
Dry contact. Must not be powered.
GND terminal is used for self powered 4-20mA
inputs and outputs.
For sensor input wiring, use 2-conductor,
twisted/shielded 18 AWG.
8
4-20 mA output 600 ohm max. Do not power
actuator with power from the thermostat. The
thermostats are half-wave rectified, whereby
the power ground is common with the signal
ground.
Figure 1d
US4010
9
Unused terminal on this model.

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3 Initial Setup
The UbiquiSTAT™can be fully programed through the touchscreen. The quick start wizard assists in first time setup
(see section 3.7), and the Settings screens can be used for additional setup. Expert setup can be done using the internal
BACnet explorer to edit the BACnet programming objects directly (see Appendix A for objects). TCS does not supply a
BACnet configuration tool at this time, but any BACnet configuration tool an installer has access to can also be used to
program the UbiquiSTAT™.
3.1 ROOM TEMPERATURE SENSOR SELECTION
The UbiquiSTAT™, by default, uses an internal temperature sensor. Remote temperature sensors can optionally be wired
into the UbiquiSTAT™. There are three room temperature sensor options: internal, remote, and an average of the two.
Room temperature selection is configured using the Room Temp Source screen (Home > Settings > Advanced > Room
Temp Source) (see section 4.5.2.3).
Internal: This setting is the factory default.
Remote (T1): The room temperature is sourced from a sensor wired to the T1 input terminals.
Averaging: The room temperature is sourced from an average of the internal sensor and a sensor wired to the T1 input
terminals. The weight of the average is also configurable, and can be used to divide the input of each sensor equally.
• Single sensor on T1: weight the internal 50% and the external 50%.
• Two sensor temperature averaging kit: weight the internal 35% and the external 65%.
• Three sensor temperature averaging kit: weight the internal 25% and the external 75%.
To setup your interface navigate to: Home > Settings > Advanced > Room Temp Source.
3.2 ADDITIONAL REMOTE RTD SENSORS
• Discharge Air: Wire sensor to T2 (no further configuration necessary).
• Outdoor Air: Wire sensor to T3 (no further configuration necessary).
• Mixed Air: Wire sensor to T1 (only available when T1 is not used for room sensing). Requires
advanced configuration via the internal BACnet explorer (see section 4.5.2.6).
3.3 ANALOG INPUT (AI) SENSORS
Both AI1 and AI2 can be wired to accept any 0/4-20mA sensor input. Typically these are used to accept humidity, CO2,
and temperature sensors. These inputs require advanced configuration through the internal BACnet explorer (see section
4.5.3.3). Analog input units display in percent of full scale by default.
3.4 DIGITAL INPUTS (DI)
There are three Digital Inputs; each may be configured in one of the following ways:
• Monitor Only
• Setpoint Setback
• Economizer Enable
• Service Status
• Filter Status
• Fan Proving
• Momentary Occupancy Override
• External Occupancy Override
• External Timeclock
• Aquastat
These inputs must be configured using the corresponding mode objects in the internal BACnet explorer screen. See
section 4.5.2.6 for more information on the internal BACnet explorer screen. For an explanation of the features listed
above, see section 5.
INITIAL SETUP

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3.5 DIGITAL OUTPUTS (DO)
The various control outputs required by heat and cool stage control are mapped to physical terminal blocks on the
controller via mechanical relays. The mapping depends on the mode of operation for the controller, and can even change
dynamically during normal operation in heat pump mode. The relays’ terminals are described by the color of wire that is
traditionally used for that control wire:
Figure 2
Terminal
Designator
Color Function
RRed 24V HVAC Unit Power
WWhite Heat
YYellow Cool
GGreen Fan
B/O Blue/Orange Reversing Valve
TC n/a Time Clock
Mapping is done as shown in the table below, based on system type (conventional or heat pump), and mode of operation.
If the 4th stage of heat or cool is desired in conventional mode, then the 3rd stage must also be enabled. Both
of these stages are optional and must be configured using the internal BACnet Explorer.
Figure 3
Terminals (Relays) Conventional Heat Pump
(Normal)
Heat Pump
(Low Limit
Changeover)
Heat Pump
(Emergency
Heat)
W1 Heat 1 Heat 3 Heat 1 Heat 1
W2 * Heat 2 Heat 4 Heat 2 Heat 2
Y1 Cool 1 Heat 1/Cool 1 Cool 1
Y2 * Cool 2 Heat 2/Cool 2 Cool 2
GFan Fan Fan Fan
B/O Heat/Cool 3, 4 * Reversing Valve Reversing Valve Reversing Valve
TC Heat/Cool 3, 4 *
*
Time Clock (TC): When used as a time clock output, this relay opens or closes based on the occupancy state. This relay
is isolated from other heating and cooling relays, which share a common connection with the R terminal. If this output is
used as a heating or cooling stage, the R terminal must be jumpered to one of the TC terminals. This is an open or close
relay that will support 24V.
Reversing Valve (B/O): When the UbiquiSTAT™is in heat pump mode, the B/O terminal is used as a reversing valve
output. It may be configured as open or closed for cooling (the default is closed) via the polarity property. If the
UbiquiSTAT is configured as conventional, it may be used as an additional heating or cooling stage.
INITIAL SETUP

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3.6 ANALOG OUTPUTS (AO)
There are up to two analog outputs (depending on model), AO1 and AO2. Both may be configured in programing
as 0-20mA or 4-20mA and direct or reverse acting. These settings are available via the touchscreen under
Settings>Advanced>Analog Outputs.
Direct Acting: The analog output increases as the input increases.
Reverse Acting: The analog output decreases as the input increases.
Output Range: Selectable as 0-20mA or 4-20mA.
The output can be converted to 0-10V or 2-10V by connecting the included 500 Ohm resistor between AO and
Ground terminal.
The factory defaults are direct acting and 4-20mA. Analog outputs can be configured for:
Heat: If set for heating, the analog output operates when the room temperature is at or below the heating setpoint,
where 4mA is maximum heat (valve open) and 20mA is minimum heat (value is closed), by default.
Cool: If set for cooling, the analog output operates when the room temperature is at or above the cooling setpoint,
where 4mA is minimum cooling (valve closed), and 20mA is maximum cooling (value is open), by default.
Economizer: The analog output operates when the mixed or discharge temperature is at or above
55F by default, where 4mA is minimum cooling (damper is closed), and 20mA is maximum cooling (damper is open),
by default.
By default, the economizer is enabled when the following conditions are met:
• Outdoor air is below 55F (free cooling available).
• Occupancy mode is occupied.
• Call for cooling is needed.
Economizer operation requires an outdoor air and discharge or mixed air input.
The following are additional features that can be programed using the internal BACnet explorer:
• Heat and Cool Aquastat
• Midpoint Control
• Demand Ventilation (CO²Control)
• Pre-occupancy Purge
3.7 ON SCREEN QUICK START WIZARD
When first powering on the UbiquiSTAT™(or after a factory reset) a sequence of configuration screens will appear that
must be completed before the thermostat becomes operational. All thermostat control and communication are disabled
until the quick start wizard is complete.
Choose your desired settings for the following pages:
• Display Settings • System Mode
• Date & Time • Occupied Fan Mode
• Thermostat Type
The remaining screens configure the UbiquiSTAT™for network communications:
• Network Address: This must be unique for each controller on the RS-485 network. The valid address range is from
1-127. If an address of value 0 is desired this can be entered after the initial setup.
• Baud Rate: This defaults to 9,600 bps for TCSbus, and 38,400bps for BACnet MS/TP. All controllers on the
network must use the same baud rate.
• Device Instance: This number must be unique across the entire BACnet network. The initial value shown is
a combination of the TCS BACnet vendor ID (496) and the previously entered network address. This is done in an
attempt to create a unique value. However, clients are encouraged to create their own numbering system for all
controllers on the BACnet network.
INITIAL SETUP

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4 User Interface
4.1 HOME SCREEN
The home screen provides at-a-glance system information and basic user controls. The navigation automatically returns
to the home screen and the display dims after 10 minutes of inactivity (no touches detected). The basic components of
the home screen are shown below in figure 4. Figure 4
1. Room Temp and Setpoints: The room temperature is rounded to the nearest whole number. The currently active heat
and cool setpoints are temporarily shown in place of the room temperature when using the up/down arrows or when
the temperature value is touched. The up/down arrow raise and lower the heat and cool setpoints (User Setpoint
Adjust) together to maintain the deadband. The up/down arrows change color (blue for cooler, orange for warmer)
when a user setpoint adjustment is active.
2. Fan Status : This symbol is animated when fan status is on. Touching this symbol displays additional
information including the fan mode.
3. System State: This indicates the present operation of the controller. Touching this symbol displays additional
information including the system mode. The system states that may be displayed on the home screen include:
a. Flame : Heating is active.
b. Snowflake : Cooling is active.
c. Idle : Neither heating nor cooling is active.
d. Warning : Heating or cooling lockout in effect. See section 5 for more information on this feature.
e. Disabled : The control is currently disabled and not heating or cooling. This is typically shown on startup
during the power on delay, or when fan proving has failed.
4. Occupancy State: This button indicates the current occupancy state as being occupied or unoccupied .
Touching this button overrides the occupancy state (switches between occupied/unoccupied) for three hours, or
until a schedule change. The time when the override will expire is shown on the button. Touching and holding the
occupancy state button until the border changes (about 5 seconds), causes the override to hold until the next change
in schedule. Whenever the occupancy state is overridden, touching the Occupancy State button again cancels the
override.
The following BACnet objects configure the use of this button:
• Occupancy Override Mode: MSV-701
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• Occupancy State Override Time: PIV-703
5. DI Setpoint Setback Active Indicator : This symbol is visible when DI Setpoint Setback is active. Touching this
symbol displays a brief explanation of the feature. See section 5 for an explanation of this feature.
6. Info Text: This two line text field may be written from the network, and can be useful for showing additional
information such as the current weather. If not being written from the network, the outdoor air temperature is visible
whenever a sensor is physically connected, or when the thermostat is receiving a valid outdoor temperature reading.
Info text can be customized via CSV-506.
7. Display Banner: The display banner contains the current date and time, and may contain the device name. The device
name is typically used describe what area or unit the thermostat is controlling. The device name can only be changed
using UbiquityTM or an external BACnet configuration tool . The time can be set to display in a 12 hour or 24 hour
format using the Date/Time screen in the Advanced Settings menu. The contents of the banner can be customized
using MSV-505.
8. Economizer : This symbol is visible when the Economizer is active. Touching this symbol
provides a brief explanation of this feature. See section 5 for an explanation of this feature.
9. Service Status Indicator : This symbol is visible only when one or more service status is active. Touching this
symbol navigates to the service status screen where any active service status is viewable. When there are more than
one service status active, a plus sign next to the symbol. See section 4.3 for more information on service status.
10. Settings: Touching this button navigates to the Settings menu. If an access code has been set, the user will be
prompted to enter the code before they are permitted to proceed to the Settings screens. See section 4.5 for more
information on Setting screens. All programming is done on these screens.
11. Status: Touching this button navigates to the Status screens. See section 4.2 for more information on the Status
screens.
Touching and holding the Status button for 5 seconds brings up a dialog asking the user if they would like
to force a device restart. If confirmed, the UbiquiSTAT™immediately restarts.
12. About: Touching this button navigates to the About screen. This screen shows product information, such as
versioning and serial number. See section 4.4 for more information about the About screen.
4.2 STATUS SCREENS
Touching the Status button on the home screen will bring up the Status screens. These screens display real time
information about the state of the control as well as inputs and outputs. This information is grouped into three sub
screens: system, advanced, and network.
4.2.1 System Status Figure 5
System Status screen details vary pending on model specific features.
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Information on the system status screen is broken into three groups:
• System (top)
-State: The current system state. This is the same as the system state shown on the home screen.
-Schedule: The currently active setpoint pair.
-Next Schedule: The next change in schedule as well as the time that it will occur. Only schedule changes less than
24 hours away are shown.
-Cool and Heat Setpoints: The setpoints currently in use by the thermostat.
-Service Status: This button displays the number of currently active Service Statuses. If there are no active Service
Statuses, the button reads “Ok” and is disabled. Touching this button navigates to the Services Status screen,
(same as touching service symbol on home screen) where any active Service Statuses are viewable.
• Inputs: These are the primary control points, shown with the same precision used by the controller. This is useful
when the rounding shown on the home screen is insufficient to explain the control behavior. When an input value is
not available (not configured or no sensor connected), dashes are displayed. The following inputs are shown:
-Room Temperature: The temperature of the space (zone) being controlled.
-Outside Temperature: The temperature of the outside air.
-Discharge Temperature: The temperature of the discharge air.
-Mixed Temperature: The temperature of the mixed air.
-Humidity: The percent relative humidity (% RH) of the space.
-CO²: The carbon dioxide content (parts per million) of the space.
• Relay Outputs: The contents depend on the programed thermostat type.
-Conventional: Each available heat and cool stage is shown. Additional stages (use of TC and B/O relays for 3rd
and 4th stages) become visible when configured as available stages. The status of the fan is included. The status
of each output is shown with an indicator light and state text. The table below shows the meaning of the symbols.
-Heat Pump: The reversing valve relay (B/O) has an indicator light next to it that is always lit: red when heating,
and blue when cooling, this is also shown in the text. Two compressor stages and two auxiliary heat stages are
displayed along with the fan status. The status of each output is shown with an indicator light and state text. The
table below shows the meaning of the state text. Figure 6
Relay State On Off Disabled
Low Limit
Changeover (Heat
Pump Compressors)
Network Override
Indicator Light Lit Not Lit Hidden Not Lit Same as On/Off
Text “ON” “OFF” “--” (Protect) “(ON!)” / “(OFF!)”
4.2.2 Advanced Status Figure 7
Advanced Status screen details vary pending on model specific features.
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Information on the advanced status screen is broken into four groups:
• Inputs:
-Type: The programmed thermostat type (conventional or heat pump).
-System: The programed system mode.
-Fan: The active fan mode.
• Digital Inputs: The status of each Digital Input is shown with both an indicator light and text. Additionally, the
programmed mode of the Digital Input is shown next to the status text.
• Economizer:
-Enabled: Indicates whether the economizer is currently allowed to modulate open. This depends on the occupancy
state, whether free cooling is available, and if cooling is needed.
-Free Cooling: Indicates when the economizer feature determines that free cooling is available. This depends on
the programed economizer mode. For example, in dry bulb setpoint mode, free cooling is indicated as available
when the outside air temperature is below the economizer drybulb setpoint.
-Freeze Protect: Indicates that the outside air damper is being modulated closed in order to protect equipment
from freezing.
• Analog Inputs & Outputs: (model specific)
-Analog Inputs: Two values are shown for each of the analog inputs. The value on the left shows the reading in
milliamps, while the value on the right shows the input scaled to engineering units.
-Analog Outputs: Two values are shown for each of the analog outputs. The value on the left shows the output in
milliamps, while the value on the right shows the output as a percent of full range. Additionally, the mode of the
analog output is shown next to the percentage.
4.2.3 Network Status
Figure 8
Information on the advanced status screen is broken into three groups:
• RS-485 Settings:
-Mode: This indicates the programmed network mode.
-Device ID: The programmed device instance number.
-Name: The programed device name.
-Address: The programmed device address.
-Baud Rate: The programmed device baud rate.
• RS-485 Status:
-Link: Indicates the overall status of the network connection. This consists of both an indicator light and associated
text. Touching the text brings up a dialog box with additional status information. The following states may be
shown:
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▫Connected (Green): The UbiquiSTAT™has detected a valid network connection. For BACnet MS/TP, this means
that the device has successfully joined the token ring.
▫Troubleshoot (Yellow): The UbiquiSTAT™is able to communicate, but is detecting problems with the network that
may cause the communication to be unreliable. Check the RS-485 wiring and network configuration on other
devices.
▫Disconnected (Red): The UbiquiSTAT™has not detected a valid network connection. For BACnet MS/TP this
means the device has not joined the token ring.
-Activity: There are two indicator lights; one for data received (Rx), and one for data transmitted (Tx). These lights
blink whenever data is received or transmitted to or from the device respectively. They are useful as a basic
diagnostic in determining whether data is flowing across the network.
-Rx Traffic: This is a statistic that indicates how much network traffic has been received by the UbiquiSTAT™.
Shown are both the number of messages and the total number of bytes. This number should be increase whenever
the thermostat is monitored or programed via the network (Gateway and/or UbiquityTM).
-Tx Traffic: This is a statistic that indicates how much network traffic has been transmitted by the UbiquiSTAT™.
Shown are both the number of messages and the total number of bytes. This number should be increase whenever
the thermostat is monitored or programed via the network (Gateway and/or UbiquityTM).
-Last Traffic: This shows the time stamp of the last time network traffic was received by the UbiquiSTAT™.
-Clear: This button clears the network traffic statistics. This includes: Rx Traffic, Tx Traffic, and Last Traffic.
• Other:
-USB Activity: This indicator light is lit whenever there is traffic detected on the USB port.
-Network Override: This indicator light is lit whenever any of the BACnet objects are being commanded remotely
from the network. This occurs, for example, whenever a sub system is implemented for the network through
UbiquityTM. The internal BACnet explorer screen can be used to determine precisely which BACnet object(s) is/are
being externally commanded (see section 4.5.2.6).
4.3 SERVICE STATUS
Service Status is defined as a state of the controller or HVAC equipment that requires action by the end user to resolve.
When a service status is active, a red badge is visible on the top of the home screen to the right of the TCS logo.
Touching this badge presents the service status viewer, which shows all active service statuses and when they were
detected. The UbiquiSTAT™may be configured to report the following service conditions:
Fan Proving Failure: When a DI is configured for Fan Proving, the system will shut down if the fan is not detected as
operational after a call from the controller. More information on this feature can be found in section 5. The fan
proving status can be reset from the service status screen, thereby re-enabling system control.
Check Filter: When a DI is configured for Check Filter, service status will indicate the need to replace the air filter.
The Check Filter status is present whenever the DI is active, and is absent when the DI is inactive. This status is
automatically cleared when the filter is changed and the status becomes inactive.
Discharge High: When the discharge temperature exceeds the high limit value, the heat control is shut down until the
condition no longer exists.
Discharge Low: When the discharge temperature drops below the low limit value, the cool control is shut down until
the condition no longer exists.
DI1 - DI3: When a DI is configured for reporting service status, it indicates when the DI is active. A text message can
be customized for each DI.
4.4 ABOUT SCREEN
This screen shows basic information about the UbiquiSTAT™including:
• Model
• Device Name
• Device ID
• Serial Number
• Firmware Version
• Hardware Version
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4.5 SETTINGS
4.5.1 Basic Settings
4.5.1.1 Fan mode
The fan mode may be set differently for occupied vs. unoccupied occupancy modes. There are four fan modes that may
be selected:
• On: The fan runs continuously.
• Auto: The fan runs only when there is a call for heat or cool.
• Cool: The fan runs only when there is a call for cool (available only when thermostat type is conventional).
• Auto + Recirc: The same as auto but with additional run time if necessary to satisfy minimum air circulation
requirements (see section 5 for more information).
4.5.1.2 Setpoints
There are four occupied heating and cooling setpoint pairs and one unoccupied setpoint pair. The pair is in effect when
the corresponding schedule is active. A minimum dead band of one degree between heat and cool setpoints is enforced,
however, a deadband of at least two degrees is recommended.
4.5.1.3 Date and Time
Set the date and time to ensure correct scheduling.
4.5.1.4 System Mode
There are six system modes:
• Off: All relays and analog outputs are set to their inactive state; no control is performed.
• Auto: Controls both heating and cooling.
• Heat: Controls only heating.
• Cool: Controls only cooling.
• Off+Recirc: Same as off but with fan recirc enabled.
• Emergency Heat: Controls only auxiliary heating (heat pump only)
4.5.1.5 Schedule
There are four occupied setpoint pairs (A,B,C,D) and one unoccupied setpoint pair that may be scheduled. Schedules are
created using setpoint pairs and start times. Each setpoint pair can be used multiple times to create up to eight schedule
changes per day. At midnight each day the system automatically transitions to unoccupied, which uses the unoccupied
heating and cooling setpoints. If no schedule changes are set for a particular day, the UbiquiSTAT™will be unoccupied
for that entire day. If a schedule requires an occupied setpoint at midnight a schedule change must be created for
midnight (12:00 AM) in order to defeat the default behavior.
Different from SZ Series Thermostats: Schedules no longer start and stop as they did on TCS thermostats.
Schedules now only transition from schedule to schedule.
The examples below assume the following setpoints:
• Occupied A: heat=70, cool=75 (best suited for customer comfort in a store)
• Occupied B: heat=65, cool=80 (best suited for after-hours employee work in store)
• Unoccupied: heat=60, cool=80 (most economical when building is unoccupied)
Normal Schedule Example: This schedule represents a business that opens at 8:00AM and closes at 5:00 PM weekdays.
By default each day begins as Unoccupied at 12:00 AM.
Figure 9
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Occupied A @
8:00 AM
Occupied A @
8:00 AM
Occupied A @
8:00 AM
Occupied A @
8:00 AM
Occupied A @
8:00 AM
Unoccupied @
5:00 PM
Unoccupied @
5:00 PM
Unoccupied @
5:00 PM
Unoccupied @
5:00 PM
Unoccupied @
5:00 PM
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12:00 AM Monday (midnight): The automatic transition to Unoccupied has no effect because the system was
already Unoccupied.
8:00 AM Monday: System changes to Occupied A schedule, which uses the A heating and cooling setpoints.
5:00 PM Monday: System changes to Unoccupied schedule which uses the Unoccupied heating and cooling
setpoints.
Saturday and Sunday: The Unoccupied setpoints are in effect for the entire day.
Setpoint Change Example: This schedule represents a business that opens at 10:00 AM and closes at 9:00 PM weekdays,
and closes at 8:00 PM on weekends. On weekdays this business has a cleaning crew that comes in for two hours after
close. This business has set a different schedule (group of setpoints) for the cleaning crew compared to their daytime
employees. Figure 10
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied B @
9:00 PM
Occupied B @
9:00 PM
Occupied B @
9:00 PM
Occupied B @
9:00 PM
Occupied B @
9:00 PM
Unoccupied @
8:00 PM
Unoccupied @
8:00 PM
Unoccupied @
11:00 PM
Unoccupied @
11:00 PM
Unoccupied @
11:00 PM
Unoccupied @
11:00 PM
Unoccupied @
11:00 PM
12:00 AM Monday (midnight): The automatic transition to Unoccupied has no effect, because the system was
already Unoccupied.
10:00 AM Monday: Store opens and schedule changes to Occupied A schedule, which uses the A heating and
cooling setpoints.
9:00 PM Monday: Store closes and cleaning crew arrives. System changes to Occupied B schedule, which uses the B
heating and cooling setpoints.
11:00 PM Monday: Cleaning crew leaves. System changes to Unoccupied schedule which uses the Unoccupied
heating and cooling setpoints.
Bar/Restaurant Schedule Example: This schedule represents a bar or restaurant that opens at 10:00 AM, and closes
at 2:00 AM the next day, and is closed on Sunday. To stay Occupied after midnight, an entry is created to override the
automatic change to Unoccupied.
Figure 11
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Occupied A @
10:00 AM
Occupied A @
12:00 AM
Occupied A @
12:00 AM
Occupied A @
12:00 AM
Occupied A @
12:00 AM
Occupied A @
12:00 AM
Occupied A @
12:00 AM
Unoccupied @
2:00 AM
Unoccupied @
2:00 AM
Unoccupied @
2:00 AM
Unoccupied @
2:00 AM
Unoccupied @
2:00 AM
Unoccupied @
2:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
Occupied A @
10:00 AM
10:00 AM Monday: Bar/Restaurant opens and system transitions to Occupied A schedule, which uses the A heating
and cooling setpoints.
12:00 AM Tuesday - Saturday: This entry causes Occupied A schedule to remain in effect, overriding the
automatic transition to Unoccupied.
2:00 AM Tuesday - Saturday: Bar/Restaurant closes and system changes to Unoccupied schedule, which uses the
Unoccupied heating and cooling setpoints.
10:00 AM Tuesday - Saturday: Bar/Restaurant opens and system transitions to Occupied A schedule, which uses the
A heating and cooling setpoints.
12:00 AM Sunday: This entry causes Occupied A schedule to remain in effect, overriding the automatic transition to
Unoccupied.
2:00 AM Sunday: Bar/Restaurant closes and system changes to Unoccupied schedule, which uses the Unoccupied
heating and cooling setpoints.
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