aci TUCH2 User manual

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TUC2 / TUCH2
Model Series Installation Instructions
PLEASE READ INSTRUCTIONS CAREFULLY BEFORE INSTALLATION!
APPLICATION
The TUC2 provides temperature space monitoring with a backlit LCD. The TUCH2 provides
temperature and relative humidity monitoring with a backlit LCD. Depending on the configuration,
the units can display and output Temperature, Relative Humidity, Setpoint, Fan Speed, System Status,
and Occupied/Unoccupied Status.
The TUC2 and TUCH2 supports single temperature sensor operation for several common sensor types
and it provides the flexibility to choose from numerous setpoint output options. The TUCH2 supports
relative humidity output in all standard analog signals at 2%, 3%, or 5% accuracy. A setup menu
provides easy output and display configuration changes.
INSTALLATION
Precautions
REMOVE POWER BEFORE WIRING.NEVER CONNECT OR DISCONNECT WIRING
WITH POWER APPLIED.DO NOT ALLOW LIVE WIRES TO TOUCH THE CIRCUIT
BOARD.
AN ISOLATION TRANSFORMER IS RECOMMENDED WHEN POWERING THE DEVICE
WITH 24VAC.
DO NOT RUN THE TUC2 OR TUCH2 WIRING IN ANY CONDUIT WITH LINE
POWERED WIRING.
FAILURE TO WIRE DEVICES WITH THE CORRECT POLARITY WHEN USING A SHARED
TRANSFORMER MAY RESULT IN DAMAGE TO ANY DEVICE POWERED BY THE
SHARED TRANSFORMER.

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Mounting
Carefully separate the cover from the base by pulling the cover and base apart towards the
bottom of the device. The hex screw may need to be turned in to release the cover.
Route the wires through the access hole in the center of the base and screw them into the
terminal blocks. Refer to the wiring instructions to make the necessary connections. Attach the
base directly to drywall, or to a standard 2” x 4” junction box using the hardware provided.
After wiring, attach the cover to the base and turn out the hex screw until the cover cannot be
removed.
Wiring
A 16 to 22 AWG shielded cable is recommended for all sensor installations. Be sure to connect
the cable shield to the ground at the controller only. The number of wires needed depends on
the application, with 3 wires minimum required to support the outputs of the TUC2 unit.
Generally, one wire is required for each output, one wire for power, and one wire for ground.
All outputs are common ground referenced.
Notes:
1. TUC2 units do not have RH or RHS terminal locations loaded.
2. If your TUC2 or TUCH2 has any output configured with a 10V or Current output, the
voltage at the +V terminal must be at least +18 VDC.

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+V - +12 to +40 VDC or 20 to 28 VAC
COM -Ground or signal common, 20 to 28 VAC
T - Temperature sensor signal to controller
TS - Temperature set point signal to controller
O/R - Override signal to controller
F/A - Fan signal to controller
OFB - Occupied feedback signal from controller
S1 - 3.5mm phone jack ring / Digital input or output
S2 - 3.5mm phone jack tip / Digital input or output
S3 - 3.5mm phone jack shield
RH - RH signal to controller
RHS - RH set point or system signal to controller
Communication Jack Wiring
Modular Telephone Jack
Before mounting the base to the wall, make the appropriate connections to the communication
jack as described below. The number of wires needed depends on the application. Using the
provided wire nuts, attach the required wires to the proper connector pins used by your
application.
4 Pin 4 Connector
6 Pin 6 Connector
COM S3
F/A
TS
TO/R S1
OFB S2 RH
+V RHS
4
2
13
WIRE WIRE
NUMBER: COLOR:
1 BLK
2 RED
3 GRN
4 YEL
REAR VIEW:FRONT VIEW:
PIN 1
5
13
24 6
FRONT VIEW: REAR VIEW:
WIRE WIRE
NUMBER: COLOR:
1 BLU
2 BLK
3 RED
4 GRN
5 YEL
6 WHT
PIN 1

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6 Pin 4 Connector
3.5mm Stereo Jack
Attach the required wires to the proper terminal locations. The TUC2 or TUCH2 supports three
signal wires, ring, tip, and shield. The number of wires needed depends on the application.
OPERATION
Keypad
The keypad comes in a 2 button, 3 button, 4 button, 5 button, or 6 button version. A 6
button keypad is needed for fan or system mode. A 3 button or 5 button keypad is
needed for override mode.
PIN 1 4
2
13
FRONT VIEW: REAR VIEW:
WIRE WIRE
NUMBER: COLOR:
1 BLK
2 RED
3 GRN
4 YEL
Ring
Shield
Tip
Terminal Block: Jack Connections:
S1 Terminal Ring
S2 Terminal Tip
S3 Terminal Shield
SETUP
MODE
SELECT
O/R

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Normal Mode
The LCD can display temperature, RH, occupied status, system mode, and fan mode.
The display configuration can be setup when ordered or changed through the setup
menu. The backlight will turn on when the any key is pressed and will turn off 10
seconds after the last key press.
Setpoint Mode
Press or to get into setpoint mode and change the setpoint. If a temperature
and RH setpoint are used, pressing or and will switch the large
numbers between temperature and RH. If temperature is displayed in the large
numbers, the temperature setpoint will adjust when or is pressed. If RH is
displayed in the large numbers, the RH setpoint will adjust when or is
pressed. If no keys are pressed for 10 seconds the unit will automatically return to
normal operation.

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Fan/System Mode
Press to change the fan or system setting. The fan or system setting will start
blinking after is pressed. Press or and to switch between the
fan and system modes. The mode that is blinking will change when or is
pressed. Press to return to normal operation. If no keys are pressed for 10 seconds
the unit will automatically return to normal operation.
Setup Mode
Press and hold for 5 seconds or press and hold and for 10 seconds to
enter setup mode. Once in the setup menu, or will scroll through the setup
menu. Press or and to enter menus. Press or and to
save a menu selections. Press to return to the previous menu. If no keys are
pressed for 15 seconds the unit will automatically return to normal operation.
Setup Menu
The full setup menu with descriptions of all the options is shown on page 7. The setup
menu will change depending on the configuration ordered. Only the menu options that
apply to the configuration ordered will be shown. For instance, if no Fan or System
were ordered then those menu options would not appear.
Setup Lockout
In the setup menu there is an option to lockout setup mode. This can be used if you do
not want users to change the setup. Once the setup menu is locked, press and
for 10 seconds to get into setup mode.

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Setup
°F or °C
Changes the temp scale
and setpoint scale
Offset Adjustment
Adjusts the temp output
up to ± 5°
Temp Output Range
Changes the temp output
range for analog outputs
Temperature DA/RA
Changes the temp output
to direct or reverse acting
for Analog outputs
Temperature Test
Sets the temp output to
40°F, 72°F, or 104°F for
testing the output
Temperature Tenths
Removes the tenths place
from the temp display
Temp Setpoint Midpoint
Sets the temperature
setpoint midpoint
Temp Setpoint Range
Changes the temp
Setpoint range
Temp Setpoint Keylock
Locks out the user from
making any setpoint
changes
Temp Setpoint Options
Temp Setpoint
Calibration
Selects between two
different setpoint outputs,
only supported for special
orders
Temp Setpoint DA/RA
Changes the setpoint
output to direct or reverse
acting for analog outputs
Temp Setpoint Display
Sets how the setpoint is
displayed, either an offset
or temperature can be
displayed
Sensor
Display
The full setup menu with descriptions of all the options are
shown above. The setup menu will change depending on
the configuration ordered. Only the menu options that
apply to the configuration ordered will be shown on the
unit.
Press and hold SETUP for 5 seconds or press the UP arrow
and DOWN arrow for 10 seconds to enter the Setup mode.
Press UP/DOWN arrows to scroll through top level menus.
Press SELECT to enter into Options Menus
Press UP/DOWN to scroll through Options Menu
Press SELECT to chose and save option in Options Menu
A full size version of this diagram can be found at
www.workaci.com
Setup
Setup
Setup
Setup
Setup
Temperature Options
(blank)
Setup
offset
°C °F
Setup
O Ut
Setup
dA rA
Setup
tE nth
Setup
tE St
Setup
(blank)
Setup
setpoint
rA ngE
Setup
setpoint
LO C
Setup
setpoint
CA L
Setup
setpoint
dA rA
Setup
setpoint
dI SP
Setup
setpoint
RH Offset
Adjusts the RH output up
To ± 5% RH
RH Test
Sets the output to 0%,
50%, & 100% for testing
the output
RH DA/RA
Changes the RH output to
direct or reverse acting
RH Tenths
Removes the tenths place
from the RH display
RH Setpoint Midpoint
Sets the RH setpoint
midpoint
Temperature Menu
RH Menu
RH Setpoint Options
Display Menu
Fan Menu
System Menu
Additional Options Menu
RH Setpoint Range
Sets the RH setpoint range
RH Setpoint Keylock
Locks out the user from
making setpoint changes
RH Setpoint DA/RA
Changes the setpoint
output to direct or reverse
acting for analog outputs
RH Setpoint Display
Sets how the setpoint is
displayed, either an offset
or RH can be displayed
Display Setup
Changes what is displayed
and the location on the
display
Backlight Brightness
Sets the backlight
brightness
Backlight Duration
Sets the length of time the
backlight stays on**
Setpoint Always On
Sets the setpoint to always
be displayed
Fan On or Off
Hides the fan display
Fan Keylock
Locks out the user from
making fan adjustments
System On or Off
Hides the system display
System Keylock
Locks out the user from
making system
adjustments
Setup Lockout
Locks out the setup menu.
To get into the setup menu
when locked, press the up
and down arrows for 5
seconds
Factory Reset
Resets the unit to factory
defaults
Software Version
Displays the software
version number
RH Options
Display Options
Fan Options
Systems Options
Additional Options
Sensor
Display
Sensor
Display
Sensor
Display
Sensor
Display
dI SP
Setup
br ite
Setup
du rtn
Setup
SP
Setup
dI SP
Setup
L OC
Setup
dI SP
Setup
L OC
Setup
LO C
Setup
rE SEt
Setup
SI On
Setup
(blank)
Setup
offset
tE St
Setup
dA rA
Setup
te nth
Setup
(blank)
Setup setpoint
rA ngE
Setup setpoint
Lo C
Setup
dA rA
Setup setpoint
dI SP
Setup setpoint
Sensor
Display
SELECT
** Increasing the time the backlight stays on will reduce the life of the backlight

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Specifications
Warranty Statement
The A/TUC2 Series and the A/TUCH2 Series are covered by ACI’s Five (5) Year Limited
Warranty, which is located in the front of ACI’s SENSORS AND TRANSMITTERS
CATALOG or can be found on ACI’s web site, which is: www.workaci.com
Supply Voltage
+12-40VDC (Resistance, 0-1V, 0-5V, 0.5-4.5V)
+18-40VDC (0-10V, 2-10V, 0-20mA, 4-20mA)
20-28 VAC (All Outputs)
Supply Current
100mA max (Current Output Models)
16mA max (Voltage and Resistive Output Models)
Temperature Accuracy
+/- 1°F (+/- 0.56°C)
Operating Temp. Range
40°F to 104°F (5°C to 40°C)
Operating Environment
32°F to 122°F (0°C to 50°C)
0 to 95% RH (non- condensing)
RH Measurement Range
0 to 100% RH (non-condensing)
RH Accuracy at 77°F
10% to 95% RH +/-2%. +/-3%. +/-5%
Analog Outputs
Resistive, 0-1V, 0.5-4.5V, 0-5V, 1-5V, 0-10V, 2-10V, 0-20mA,
4-20mA
(500 ohms maximum load resistance on current outputs)
Setpoint Accuracy
+/- 5% Full Scale Output (Resistance)
+/- 2% Full Scale Output (Analog)
Analog Setpoint Outputs
Resistive, 0-1V, 0.5-4.5V, 0-5V, 1-5V, 0-10V, 2-10V,
0-20mA, 4-20mA
Setpoint Resolution
Increments
+/-1°F (+/- 0.5°C) for Temperature or +/-1% for RH
Setpoint Range
See ordering information
Override, Fan, & System
Options
See ordering information
Communication Jack
See ordering information
Approvals
RoHS, REACH