TCI-W-U Universal Controller
OVERVIEW
Features
Universal PID and/or binary control for any analog input/output
signal and range
Multiple auxiliary functions: heat-cool auto changeover, automatic
enable, setpoint compensation
Averaging, min. and max. functions
Cascading of control loops (-W22 type)
Alarm monitoring of low and high limits on all inputs
Programmable reaction in case of alarm
Feedback function for inputs and set points
Functions for dehumidifying, set point shift, cascade control
Password protected programmable user and control parameters
TCI-W22-U also includes
Power Cap protected real-time clock with 48hr power backup
7-day programmable schedules, with options including change of
setpoints and direct position of manual outputs
Blue backlight
Fan coil units
Heat exchangers
Zoning
VAV
Air handlers
Fan, Pump control
Humidifiers
Dehumidifiers
Ventilation
Radiant heating
Radiant cooling
Pressurization
Model
Stock code
Loop
Temperature
Input
Humidity
Input
Universal
Input
Binary
Output
Analog
Output
Option
TCI-W11-U
40-10 0074 1 1 0 1 2 1
Standard
TCI-W11-U-H
40-10 0163 1 1 1 1 2 1
rH Sensor 3% acc.
TCI-W22-U
40-10 0076 2 1 0 2 2 1
Clock schedules
TCI-W22-U-H
40-10 0078 2 1 1 2 2 1
rH Sensor 3% acc.
AES3-HT-A2
40-50 0102 1
rH Sensor 2% acc.
AES3-HT-A3
40-50 0103 1
rH Sensor 3% acc.
AES3-HT-A5
40-50 0104 1
rH Sensor 5% acc.
Housing Blank = square housing
In/Outputs: See table below
Control loops: 1 = 1 control loop, 2 = 2 control loops
Mounting: W = Wall mounted
T C I
2 - W
U - 2
TCI-W-U Universal Controller
Applications
General
TCI-W11-U: 1 independent control loop, 1 internal temperature sensor, 1 universal input (analog/binary/temp), 2
binary outputs, 1 analog output
TCI-W22-U: 2 independent control loops, 1 internal temperature sensor, 2 universal inputs, 2 binary outputs, 1
analog output.
Internal temperature sensor standard. Add replaceable humidity element as required: AES3-HT-A2 (2%), AES3-
HT-A3 (3%), or AES3-HT-A5 (5%)
Flexible application configuration is made with a parameter-setting routine using the standard operation terminal.
Name
Ordering
Temperature sensors: Use Vector Controls NTC sensors to achieve maximum accuracy:SDB-Tn10-20 (duct), SRA-Tn10
(room), SDB-Tn10-20 + AMI-S10 as immersion sensor.
Actuators: Choose modulating actuators with an input signal type of 0-10 V DC or 4-20 mA (Min. and max.signal
limitations may be set with parameters.3-pointpoint actuators with constant running time are recommended.
Binary auxiliary devices (e.g. pumps, fans, on/off valves, humidifiers, etc):Do not directly connect devices that exceed
specified limits in technical specifications – observe startup current on inductive loads.
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TCI-W-U Universal Controller
OPERATION
Power Supply
Power Requirements
24 VAC ±10%, 50/60 Hz,Class 2, 2.0 A, 48 VA max.
24 VDC ±10%
Power Consumption
Max. 3 VA
Electrical Connection
Terminal Connectors
0.34…2.5 mm2 wire (AWG 24…12)
Clock backup
Min. 48 hours
Signal inputs
Universal Input
Input Signal
Resolution
Impedance
Setting for Voltage or Current
0–10 V or 0–20 mA
9.76 mV or 0.019 mA (10 bit)
Voltage: 98kΩ Current: 240Ω
Universal Input
Input configured to remote temperature (RT) or digital input (DI)
Range
NTC (Sxx-Tn10 sensor): -40…140 °C (-40…284 °F)
Accuracy
-40…0 °C (-40…32 °F): 0.5 K
0…50 °C (32…122 °F): 0.2 K
50…100 °C (122…212 °F): 0.5 K
> 100 °C (> 212 °F): 1 K
Humidity Sensor AES3-HT-Ax:
Range
Measuring Accuracy
Hysteresis
Repeatability
Stability
Capacity sensor
0…100 % rH
See Figure to the right
1%
0.1%
< 0.5% / year
Signal outputs
Analog Output
Output Signal
Resolution
Output Load
DC 0–10 V / 0–20 mA
9.76 mV / 0.019 mA
Voltage: ≥1kΩ Current: ≤250Ω
Relays Outputs
Type of disconnection
AC Voltage
DC Voltage
Micro-interruption
0…48 VAC, 2(1.2)A max. (Observe local regulation)
0…30 VDC, 2A max.
Insulation strength
between relays contacts and system
electronics:
between neighboring contacts:
2000V AC to EN 60 730-1
1250V AC to EN 60 730-1
Environment
Operation
Climatic Conditions
Temperature
Humidity
To IEC 721-3-3
class 3 K5
0…50 °C (32…122 °F)
<95 % r.H. non-condensing
Transport & Storage
Climatic Conditions
Temperature
Humidity
Mechanical Conditions
To IEC 721-3-2 and IEC 721-3-1
class 3 K3 and class 1 K3
-25…70 °C (-13…158 °F)
<95 % r.H. non-condensing
class 2M2
Standards
conforms to
EMC Standard 89/336/EEC
EMEI Standard 73/23/EEC
EN 61 000-6-1/ EN 61 000-6-3
Product standards
Automatic electrical controls for household
and similar use
Special requirement on temperature
dependent controls
EN 60 730 –1
EN 60 730 – 2 – 9
Degree of Protection
IP30 to EN 60 529
Pollution Class
II (EN 60 730-1)
Safety Class
III (IEC 60536)
Overvoltage Category
I (EN 60 730-1)
General
Material: Cover, back part
Mounting Plate
Fire proof ABS plastic (UL94 class V-0)
Galvanized Steel
Dimensions (H x W x D)
Front part: 112 x 73 x 15 mm (4.4” x 2.9” x 0.6”)
Power case: ø 58 x 32 mm (ø 2.3” x 1.3”)
Weight (including package)
TCI-W11-U = 255g (9.0 oz), TCI-W22-U = 265g (9.3 oz)
Max rH tolerance at 25°C (77°F)
%rH
%rH
10
20
30
40 1090 0 50
60
70
80
±1
±0
±2
±3
±4
AES3-HT-A2
AES3-HT-A3
AES3-HT-A5
Technical specifications
Warning! This device is intended to be used for comfort applications. Where a device failure endangers human life and/or
property, it is the responsibility of the owner, designer and installer to add additional safety devices to prevent or detect a
system failure caused by such a device failure. The manufacturer of this device cannot be held liable for any damage caused
by such a failure.
Failure to follow specifications and local regulations may endanger life, cause equipment damage and void warranty.
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TCI-W-U Universal Controller
OPERATION
1 7
G0 X1
1 8
G0X2
X
H1
X
T1
0V (COM)
24V AC/DC
2
G
TCI-W22
1
G0
0-48VAC, 0-30VDC
3
Q13
16
G0Y1
YM1
X
U1
YB1
4
Q14
YB2
5
Q24
0V AC
X
U2
X
T1
0V (COM)
24V AC/DC
2
G
TCI-W11
1
G0
0-48VAC, 0-30VDC
3
Q13
X
U1
1 7
G0X1
1 6
G0 Y1
YM1
YB1
4
Q14
YB2
5
Q24
0V AC
X
H1
Warning:
Live Electrical
Components!
During installation,
testing, servicing and
troubleshooting of
Vector Controls
products, it may be
necessary to work
with live electrical
components. Have a
qualified licensed
electrician or other
individual who has
been properly trained
in handling live
electrical components
perform these tasks.
Failure to follow all
electrical safety
precautions when
exposed to live
electrical components
could result in death
or serious injury.
112 (4.4)
73 (2.9)
32 (1.2)
15
Installation
Install the controller on an easy accessible interior
wall, approx. 1.5 m above the floor in an area of
average temperature.
Avoid direct sunlight or other heat sources, e.g. the
area above radiators and heat emitting equipment.
Avoid locations behind doors, outside walls and below
or above air discharge grills and diffusers.
Location of mounting is less critical if external
temperature sensors are used.
Ensure adequate air circulation to dissipate heat
generated during operation.
Observe local regulations.
Do not mount in a wet or condensation prone
environments.
Dimensions, mm (inch)
Connection
Terminal Description
G0 Power supply: 0V, -24VDC; common for power supply, analog in- and outputs
G Power supply: 24VAC, +24VDC
Q.. Binary outputs: Potential free relays contacts (see technical specification)
Yb1,b2 Binary output common
X
Universal input: NTC 10kΩ @ 25°C (77°F), 0…10 V or 0…20 mA(selectable by jumper)
U1, u2
Ym1 Analog output: 0…10 V or 0…20 mA
XT1 Internal temperature input
XH1 Internal humidity input if AES3-HT is inserted
Use copper, twisted pair, conductors only. The operating voltage must comply with the requirements for safety extra-low
voltage (SELV) as per EN 60 730. Use safety insulating transformers class II with double insulation as per EN 60 742; they
must be designed for 100% ON-time. When using several transformers in one system, the connection terminal 1 must be
galvanic connected. TCI is designed for operation of AC 24 V safety extra-low voltage and is short-circuit-proof. Supplying
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*
TCI-W-U Universal Controller
OPERATION
Operation mode symbols
Control symbols
Comfort (occupied): All control functions operating per set points
Heating (Reverse) Active
Economy (unoccupied): Set points shifted according to 1L07, 2L07
Cooling (Direct) Active
OFF
Energy Hold Off: Outputs are off, inputs monitored for alarms
Schedule Set
Manual Override
Fan Active
Left (POWER)
Press < 2 sec.: Toggle STANDBYCOMFORT mode or switch from OFF
to ON
Press > 2 sec.: Turn unit OFF. Text
OFF displayed with current time
(deluxe) temperature (standard)
(Parameter setting: ENTER to
select menu option, accept
parameter change)
Up
Increment SET POINT
(Parameter setting:
SCROLL menu options
and parameters)
Down
Decrement SET POINT
(Parameter setting: SCROLL menu
options and parameters)
Loop indication
Standard display (no button pressed
for 30 sec.): Not visible.
Loop display: Bar at 1 = Loop 1, Bar at
2 = Loop 2
Mode
Display of operation
mode
Large Digits
Display of input or parameter
value.
Indicators
Standard display:
Active digital
output (at 1, 2)
Loop display:
Active digital stages
(at 8,9,10)
Vertical Bar
(scrolls up/down, 10% resolution)
Small Digits
Display of setpoint, clock or
parameter number.
Right (OPTION)
Press < 2 sec.: Select Control Loop
Press > 2 sec.: Enter set-up
CLOCK, SCHEDULES, H/C
(Parameter setting: ENTER to
select menu option, accept
parameter change)
voltages above AC 24 V to low voltage connections may damage the controller or other devices. Connection to voltages
exceeding 42 V endangers personnel safety.
Display and Operation
Standard display (Parameters UP08, UP09, UP10)
Active whenno key has been pressed for 30 seconds.
Contents may be chosen with parameters.
Loop display
Active when changing set points. Large digits show input value. Small digits show set point. Vertical bars show analog
output value. Arrows in position 1, 2 and/or 3 show active binary (digital) output stages
Override of secondary set point in cascade control
If cascade control is active, withvariable air volume (VAV) for example,the user can override the primary loop and
manually select the set point of the secondary loop-the loop is now changed to constant air volume (CAV). Typically for
tuning the VAV system.This feature may be disabled with UP02.
While the secondary loop is displayed change the set point with UP/DOWN. Override Cascade symbol appears.
Press OPTIONto move back to the temperature loop and cancel cascade override.
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TCI-W-U Universal Controller
OPERATION
For TCI-W11-U: Press OPTION > 2 sec. SEL and H-C is displayed.
For TCI-W22-U: Press OPTION > 2 sec. SEL and current time is displayed.
Press UP key twice. SEL and H-C is displayed.
Press OPTION again to toggle H or C.
SEL
H-C
For TCI-W11-U: Press OPTION > 2 sec. SEL and H-C is displayed.
Press UP key once: UI1 and its value are displayed
For TCI-W22-U: Press OPTION > 2 sec. SEL and current time is shown.
Press UP key three times. UI1 and value are displayed.
Press UP key again to step through the next active input
Note: disabled inputs will not be shown.
75%
UI 1
Power Failure
All parameters and set points are memorized and do not need to be re-entered.
Upon return of power: SetParameter UP05to keep the unit off, switch on, or operation mode before power failure.
Clock and time schedule settings retained for 48 hours (after powered for at least 10 hours).
Error messages
Err1: An assigned input is not enabled or missing. All control loops, functions and outputs tied to this input will be disabled.
Err3: A function refers to a disabled input. Disable the function or enable the input.
Err4: Internal failure. Product must be replaced.
Verify input connections, jumper settings and parameter settings for the input involved.
Manual heat – cool change
To manually change heating or cooling mode press the OPTION key for more than 2 seconds. Access to manual heat – cool
change may be disabled with parameter UP03.
Display input values
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TCI-W-U Universal Controller
OPERATION
Press OPTION > 2 sec. SEL and current time displayed
Press OPTION< 2 sec. to change time,
Minutes blink: UP/DOWN to change, OPTION to save minutes,
Hours blink: UP/DOWN to change, OPTION to save hour,
Press OPTION to save time,
DAY1 blinks: UP/DOWN to change, OPTION to save day
SEL
00:00
DAY1 (Mon)
Press OPTION > 2 sec. SEL and current time displayed
Press UP:
SEL and PRO displayed, clock symbol blinks
Press OPTION:
Time schedule status displayed OFF or ON:
Press OPTION
OFF/ ON blinks, UP/DOWN to change, OPTION to save
SEL
PRO
Pro
OFF/ON
Press UP while PRO-ON displayed:
Large digits display Pr01, small digits display 00:00
Press OPTION:00:00 blinks
Press UP/DOWN to select Pr01switching time from 00:00–23:45
Press OPTION to save switching time (bar appears indicating step 1 complete):
DAY 1 blinks
Pr01
08:00
While Pr01 is displayed and DAY1 is blinking:
Press UP: Activate Pr01 switching time for DAY1 (triangle appears on 1),
Press DOWN:
Deactivate Pr01 switching time for DAY1(triangle disappears)
Press OPTION to save Pr01 DAY1 (2nd bar indicates step 2 complete):
Repeat for DAY2 – DAY7
Pr01
DAY1
1 2 3 4 5 6 7
After Pro1, DAY1–DAY7 is completed (Pro1 switching time activate or deactivate on desired days), press
OPTION again to come to desired action for Pro1. The following options appear in order:
No = switching time not active
OP = operation mode (select ON, OFF, COMFORT, ECONOMY)
L1 = set point of loop 1 (select set point)
L2 = set point of loop 2 (select set point)
d1 = ON/OFF status of do1 (output must be in manual mode)
d2 = ON/OFFstatus of do2 (output must be in manual mode)
A1 = set point (0-100%) of ao1 (output must be in manual mode)
After repeatedly pressing OPTION through DAY7:
First available action No appears, blinking:
Press UP/DOWN to scroll through the 8 possible actions (3nd bar indicates step 3 complete)
Pr01
no
Available actions blink as you scroll through them, Press OPTION to select one:
Characteristics of action (e.g. 0–100% for A1) appear (4th bar indicates step 4 complete)
Press UP/DOWN to select, OPTION to complete
Pr01
08:00
Clock operation
TCI-W22-Ucontains a quartz clock with battery back-up (not available in TCI-W11-U). Up to 8 mode changes based on time
and day of the week may be programmed. Also position an output or select a set point directly with a time schedule. A
blinking clock indicates that the time has not been setor thatthe unit has beenwithout power for longer than 48 hours. The
time needs to be set to allow time schedules to operate.
Clock setup
Enable/disable time schedules
Creating time schedules
Step 1: Select a switching time (Up to 8, Pr01–Pr08)
Step 2: Apply selected switching time (Pr01) to DAY1 (Mon) – DAY 7 (Sun)
Step 3: Select action for switching time (Pr01+Days)
Step 4: Complete switching event (e.g. Pro1 = 08:00, DAY 1, Comfort mode)
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TCI-W-U Universal Controller
SETUP AND CONFIGURATION
Module
Description
Notes
PW
UP
User and display parameters
Control user access and select display elements, regional settings
009
UI
Input configuration: 1T, 1H,
1U, 2U
TCI-W22-U: Internal temp. and RH, 2 universal inputs
TCI-W11-U: Internaltemp.1 universal input
241
LP
Control loops Lp1, Lp2
TCI-W22-U: 2 independent control loops
TCI-W11-U: 1 independent control loop
AO
Analog output configuration,
AO1
TCI-W11-U and TCI-W22-U : 1 analog output
DO
Binary output configuration,
do1, do2
TCI-W11-U and TCI-W22-U: 2 binary (digital) outputs - relays
FU
Special functions
Common to all TCI
Setting parametersto configurethe controller
TCI is an intelligentcontroller with the flexibility to fit a wide range of applications. The control operation is defined by
parameters set using the standard operation terminal. There are two levels:
1. User/display parameters (password 0009)
2. Control parameters (password 00241)
Recommended set-up procedure:
1. Set jumpers on the back of the controller for inputs and outputs
2. Connect power supply and inputs
3. Make sure Celsius – Fahrenheit settings are correct (UP07)
4. Program input parameters
5. Program control parameters
6. Program output parameters
7. Program auxiliary functions and user settings
8. Test function of unit
9. Switch off power
10. Connect outputs
11. Test control loop
Parameters are grouped according to modules:
How to change parameters
1. Press UP/DOWN buttons simultaneously for three seconds. The display will show firmware version and revision number.
Press the OPTION button to start login.
2. CODE is shown in small display.
3. Code to access user parameters is 009, control parameter is 241. The access numbers are fixed and cannot be changed.
4. Select this using UP/DOWN buttons.
5. Press OPTION after selecting the correct code.
6. Once logged in with 009, the user/display parameters are displayed immediately. Once logged in with 241 control
modules are displayed (Lp1, Lp2, 1u, 2u, etc.) –select with UP/DOWN and open with OPTION. As soon as the module is
open its parameters are displayed.
7. Select the parameters with the UP/DOWN buttons. Change a parameter by pressing the OPTION button. Three arrows are
displayed to indicate that the parameter may be modified. Use UP/DOWN buttons to adjust the value.
8. After you are done, press OPTION to save the new value and return to the selection level (arrows disappear when
selection is saved). Pressing left hand POWER button without pressing OPTION will discard the value and return without
saving. For control parameters press POWER again to leave parameter selection and return to control module selection.
9. Press the POWER to leave the menu. The unit will return to normal operation if no button is pressed for more than 5
minutes
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TCI-W-U Universal Controller
USER CONFIGURATION
Parameter
Description
Range
Default
UP 00
Enable access to operation modes
ON/OFF
ON
UP 01
Enable access to set points
ON/OFF
ON
UP 02
Enable manual control in cascade
ON/OFF
ON
UP 03
Enable change of heating/cooling mode for 2 pipe systems
ON/OFF
ON
UP 04
Enable access to time programs:
ON/OFF
ON
UP 05
State after power failure:
0= off, 1= on, 2= state before power failure
0, 1, 2
2
UP 06
Enable Economy (unoccupied) Mode.
Shift the setpoint to a lower temperature in winter or higher temperature in
summer in order to save energy. Economy mode may be activated through
the POWER button, or with the external input (typically for key card
switches in hotel rooms or motion detectors for meeting rooms.)
ON/OFF
ON
UP 07
Celsius or Fahrenheit: ON= Fahrenheit, OFF= Celsius
ON/OFF
OFF (Celsius)
UP 08
Show standard display while no key is pressed
ON/OFF
ON
UP 09
Select type of contentforlarge digits (00= OFF):
0–5
1
01= Input
02= Setpoint
03= Analog Output
04= Binary Output
05= Clock
UP 10
Select content sourcefor large digits (0=OFF):
0–4
1
Input:
1= 1T
2=1H
3= 1U
4= 2U
Set point:
1= Lp1
2= Lp2
Analog output:
1 – AO1
Binary output:
1 – DO1
2 – DO2
UP 11
Select type of contentforsmall digits(same options as UP09)
0–5
Standard = 2
Deluxe = 5
UP 12
Select content sourceforsmall digits (same options as UP10)
0–4
1
UP 13
Select analog output for vertical bar display (00= OFF):
0–4
3
01= AO1
02= FO1
03= Output LP1
04= Output LP2
UP 14
Display heating/cooling state in standard display mode
ON/OFF
OFF
UP 15
ON = Alarms blink after being active and need to be confirmed
OFF= Alarms are only shown when they are active
ON/OFF
ON
UP 16
(TCI-W22-
U)
Clock display type: OFF= 24-hr, ON= 12-hr(AM/PM)
ON/OFF
OFF(24hr)
UP 17
(TCI-W22-
U)
Reset timer for manual override of PRO time schedule:
0= Not active
1–255= Delay for controller to go back to the scheduled OFF, ECONOMY, or
COMFORT operation mode if the operationmode is changed manually.
0–255 Min
60(Min)
User and display parameters (password 009)
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TCI-W-U Universal Controller
INPUT CONFIGURATION
Parameter
Description
Range
Default
1T00
1H00
Enable internal sensor
OFF/ON
ON
1T01
1H01
Display minimum value
-50–205
0
1T02
1H02
Display maximum value
-50–205
100
1T03
1H03
Sensor sampling rate(control speed decrease as rate increases)
0–100
10
1T04
1H04
Sensor calibration
per input
0
1T 05
1H05
Alarm 1low limit (1T), Alarm 3low limit (1H)
OFF/ON
OFF
1T06
1H06
Alarm 1/3low limit values
-40–215°C
5
1T07
1H07
Alarm 2high limit (1T), Alarm 4high limit (1H)
OFF/ON
OFF
1T08
1H08
Alarm 2/4high limit values
-40–215°C
50
1T09
1H09
Hysteresis Alarm 1, 2, 3, 4
0–100°
5
1T10
1H10
Calculate a range of inputs (0= not active):
1=average, 2=minimum, 3=maximum, 4=differential
0–3
0
1U 00
Signal type (0= not active):
1=0-10V or 0-20mA, 2=2-10V or 4-20mA, 3= passive temperature
0–3
1
1U 01
Display minimum value
-50–205
0
1U 02
Display maximum value
-50–05
100
1U 03
Analog input display range: 0= x 0.01, 1= x 0.1, 2= x 1, 3 = x 10
0–3
1
1U 04
Analog input unit of measure: 0= no unit, 1= %, 2= °C /°F, 3= Pa
0–3
0
1U 05
Sensor sampling rate(control speed decrease as rate increases)
0–100
10
1U 06
Sensor calibration
Per input
0
1U 07
Alarm 5low limit(1U), Alarm 7low limit (2U)
OFF/ON
OFF
1U 08
Alarm 5/7low limit value
-40–215°C
5°C(40°F)
1U 09
Alarm 6high limit (1U), Alarm 8 high limit (2U)
OFF/ON
OFF
1U 10
Alarm 6/8high limit value
-40–215°C
50°C(122°F)
1U 11
Hysteresis alarm 5 and 6 (7 and 8)
0–100°
5°C(10°F)
1U 12
Calculatea range of inputs (0=not active):
1= average, 2= minimum, 3= maximum, 4= differential
0–4
0
Input
1T
1H
1U
2U
Low limit
ALA1
ALA3
ALA5
ALA7
High limit
ALA2
ALA4
ALA6
ALA8
Control configuration (Password 241)
Input configuration
Internal inputs 1T temperature and1H humidity (with added AES3-HT-A2,3 or 5 element)
Universal inputs 1U, 2U (TCI-W11-U: 1U only, TCI-W22-U: 1U and 2U)
Set jumpers on the back of the controller: 0–10VDC (default), 0–20mA, or RT/DI (passive temperature or binary)
Further define analog inputs with U00
Match sensor range to input display. With a differential pressure transmitter having 0–200 Pa measuring range set UO1
display minimum to 0 and U02 display maximum to 200. The allowable range value of -50–205 may be adjusted with
multipliers inU03. The largest displayable values are -990–9999. Limiting range increases resolution.Applies to analog as
well as passive temperature inputs.
For binary input (open/close contact) set the jumper to RT/DI and parameter U00 to an analog input. An open contact
reads as a high value (100%), a closed contact as a low value (0%).
Enable / Disable an alarm. Setting the alarm enable to OFF will prevent the alarm from being displayed on screen. It may
never the less be used to control an output by setting the appropriate output alarm flags. This way, an alarm limit may be
used as interlock.
Specify the input value that triggers an alarm. Hysteresis is the difference between alarm level input and value required
to turn the alarm off. An alarm is displayed as text if enabled (see table). Alarm text can be set to blink continuously until
acknowledged by pressing the OPTION button or only while the alarm conditions are active (see user parameter UP15).
Calculate a range of inputs for loop control or display with T10, H10, U12. The largest input of the group selected will
carry the calculated value. When average is activated on 2U12 and 1T10, the averageis carried on 2U.Inputs grouped for
calculation must be of same type and range. It is possible to use different functions on different inputs. For example,
minimum of 1T and 2U and maximum of 1U and 1H. It is not possible to use different functions on one input.
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TCI-W-U Universal Controller
CONTROL LOOP CONFIGURATION
Parameter
Description
Range
Default
1L 00
Select loop control input (0= loop disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U
0–4
1
1L 01
Minimum set point limit heating
per input
10°C(50°F)
1L 02
Maximum set point limit heating
per input
28°C(82°F)
1L 03
Minimum set point limit cooling
per input
18°C(64°F)
1L 04
Maximum set point limit cooling
per input
34°C(92°F)
1L 05
Enable set point compensation (0= disabled)
1= winter compensation, 2= summer compensation, 3= winter and summer
0–3
0
1L 06
Loop input special (0= normal):
1= combine loop 1 and loop 2
2= cascade with reverse sequence of primary loop
3= cascade with direct sequence primary loop
4= cascade with both reverse and direct sequence of primary loop
0–4
0
1L 07
Economy mode set point shift: (Function depends on 1L25)
The comfort (occupied) setpoint is shifted by the value set with parameter.
Reduces the heating set point and increases the cooling set point.
per input
5.0°C(10°F)
1L 08
Dead zone between heating and cooling set points
The Dead Zone Span lies between the heating and the cooling setpoint. The
output is off while the measured value is within the dead zone span. A negative
dead zone is not possible.
Per input
1.0°(2°F)
1L 25
Fixed setpoint in ECONOMYmode
OFF = ECONOMYset point shift applies
ON = In ECONOMYmode use minimum setpoint limit as setpoint in heating
mode or maximum setpoint limit in cooling mode
ON, OFF
OFF
1L 26
Setpoint compensation range, the maximum range the setpoint is shifted.
0 = Temperature setback: the setpoint is shifted towards setpoint limit
Acc input
0.0°C
Cascade Control Example – VAV Application
Secondary loop =airflow/pressure (2L)
Primary loop = temperature (1L)
2L01=20%, 2L02=100%, 2L06=2
Temperature output is spanned between min (20%) and max(60%) pressure
setpoint limits
When temperature output is 50%pressure set point is 40% (e.g. 4v with 0-
10v rage)
Pressure set point is determined by temperature demand. Change the pressure range to change the impact the
temperature output will have on pressure setpoint
Control loop configuration (TCI-W11-U: 1L only, TCI-W22-U: 1L and 2L)
Manipulation of the setpoint
Economy mode setpoints: There are two possibilities to change the setpoint in economy mode: Shift it by L07 or switch to
the minimum setpoint limit in heating mode and maximum setpoint limit in cooling.
Economy mode may be disabled by setting UP06 to OFF.
Control loops and sequences are activated when output parameters are defined.
In cascade control (L06) the output of the primary loop determines the set point of the secondary loop. Select the
cascade parameter on 2L to make 1L primary. Select the cascade parameter on 1L to make 2L primary. A typical
application is a variable air volume systemwhere the temperature outputdetermines the pressure set point.
Setpoint Compensation
The setpoint compensation is typically used to compensate the set point due to a change in outside temperature. The
relationship to the input used to drive the setpoint compensation is defined in auxiliary functions FU00 to FU07.
Enable summer or winter set point compensation for this control loop with L05. Define the compensation range with
L26.L26 defines the full setpoint shift once the compensation input has reached its lower limit in winter mode or upper
limit in summer mode.
Setting the range parameter to 0 will activate the setpoint setback function: The setback function shifts the set point
toward the set point minimum or the set point maximum based on an external input value.Once the compensation input
has reached its lower limit in winter mode or upper limit in summer mode, the setpoint is fixed to the setpoint minimum
or maximum value. Commonly this is used for humidity control to avoid condensation on outside walls or windows in very
cold weather.
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TCI-W-U Universal Controller
CONTROL LOOP CONFIGURATION
Legend
T, U Input signal temp/universal
X
PH
P-band heating/direct
X
PC
P-band cooling/reverse
X
DZ
Dead zone h/c set points
X
SBY
Economy mode set point shift
W
H
Set point heating/reverse
W
C
Set point cooling/direct
Y
H1, YR1
PI sequence heating/reverse
Y
C1, YD1
PI sequence cooling/direct
Parameter
Description
Range
Default
1L 09
Offset for heating PI sequence
per input
0
1L 10
Offset for cooling PI sequence
per input
0
1L 11
P-band heating
per input
2.0°C(4.0°F)
1L 12
P-band cooling
per input
2.0°(4.0°F)
1L 13
Integral gain heating (0.1 steps)
low= slow reaction, high= fast reaction
0–25.5
0.0
1L 14
Integral gain cooling(0.1 steps)
0–25.5
0.0
1L 15
Measuring interval integral (seconds)
low= fast reaction, high value= slow reaction
0–255
1 sec.
Recommended Values
heating (air)
heating (radiant)
humidifying
cooling
dehumidifying
pressure
P-band
2–3°C(4–6°F)
1–1.5°C(2–3°F)
Measuring interval (TI)
2 5 15 1 70
1
Integral gain (KI)
0.2
0.1
0.1
0.2
0.3
0.8
Heating/Reverse
Cooling/Direct
100
0
T [°C, F]
U [V, mA]
YH1, Y
R1
XPH
W
H
XPC
XDZ
Y
C1, YD1
W
C
X
SBY
X
SBY
PI control sequence
Proportional control(P-band)
The proportional control function calculates the output based on the difference between setpoint and measured value. The
proportional band (P-band) defines the difference between setpoint and measured value which will result in a 100%
output. For example, with a heating or reverse 0-10v control sequence, and a 2.0°C (4.0°F) P-band value, at 10v the
controller will be 2.0°C (4.0°F) below setpoint. This is the working range of the proportional control sequence.
Setting the proportional band to 0 disables proportional control.
Integral and Differential control
Proportional control is in most cases a very stable control mode. The flaw of proportional control alone, however, is that
the setpoint is normally not reached. As the measured value gets closer to the setpoint, the output reduces until it
reaches a point, a fraction above or below the setpoint, where the output equals the load. To reach the setpoint and
achieve a higher level in comfort the Integral/Differential function should be activated.
Integral Gain (KI)dynamically increases the output by the selected KI value every Measuring Interval TI until the
setpoint is reached. The challenge is to prevent hunting, where the output increases too fast, the temperature overshoots
the setpoint, the output goes to 0, the temperature undershoots the setpoint, and the cycle repeats itself. Hunting may
result if the integral gainis too high or measuring interval too short. Each system is different. To prevent instability the Pband should be extended when integral gain is active (L14 or L15 set above 0).
Setting the integral gain to 0 disables integral and differential control.
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TCI-W-U Universal Controller
CONTROL LOOP CONFIGURATION
Legend
T, U Input signal
O
QH
Offset heating/direct
O
QC
Offset cooling/reverse
X
DZ
Dead zone
X
SBY
Economy set point shift
W
H
Set point heating/reverse
W
C
Set point cooling/direct
QC, Q
D
Binary sequences cooling/direct
QH, Q
R
Binary sequences heating/reverse
Parameter
Description
Range
Default
1L 16
Action of stages:
0= cumulative:stage 1 stays on when 2 on comes on
1= single:stage 1 turns off when 2 on comes on
2= digital: stage 1 only, stage 2 only, then stage 1 plus 2
0–2
0
1L 17
Offset for heating/reverse binary sequences
per input
0.0°(0.0°F)
1L 18
Offset for cooling/direct binary sequences
per input
0.0°(0.0°F)
1L 19
Switching span heating
per input
1.0°(2.0°F)
1L 20
Switching span cooling
per input
1.0°(2.0°F)
1L 21
Switching hysteresis
per input
0.5°(1.0°F)
1L 22
Switching delay
0–255s
10s
1L 23
Activation of reverse/direct (heat/cool) sequence
OFF= activates based on demand
ON = follows heat/cool state of controller: Set manually or by auxiliary function
(FU20-FU23)
ON/OFF
OFF
1L 24
Delay for heat /cool changeover when L23=OFF
0–255 min
5 min
Cumulative
Single
Digital
Stage 1
Q1
Q1
Q1
Stage 2
Q1+Q2
Q2
Q2
Stage 3
Q1+Q2
ON
OFF
T [°C, F]
U [V, mA]
Q
C2, QD2
OSH
W
H
OSC
XDZ
W
C
XH
Q
C1, QD1
Q
H2, QR2
Digital control sequence
Cumulative stage action (L16=0)is typically used in electric heat applications, and single stage action (L16=1)in fan speed
applications. Digital stage action (L16=2) is especially useful in electric heat applications to generate three steps with just
two outputs. For example: Step 1=100W, step 2=200W, step 3=300W.
Switching hysteresis (L21) is the difference between switching on and switching off. A small hysteresis will increase the
number of switching cycles and thus the wear on associated equipment.
With switching delay (L22) cumulative stages will not switch on simultaneously. With a sudden demand or initial power
stage 2 will not start earlier than 10 seconds (default value) after stage 1 has been initiated.
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TCI-W-U Universal Controller
OUTPUT CONFIGURATION
W
H
W
C
100
50
0
YH1,Y
R1
XDZ
Y
C1,YD1
Heating
Cooling
1A04
1A05
1A03
1A06
T (°C/F), U(V, mA)
Output Priority
1. Alarm level low
2. Alarm level high
3. Operation mode OFF
4. Control function
Parameter
Description
Range
Default
1A 00
Select control loop or special function (0= OFF):
1= LP1, 2= LP2
3= Dehumidify (4 pipe, max LP1 cooling, LP2 direct)
4= Manual positioningor by time schedule (0–100%)
5= Transmit value ofan input
0–5
1
1A 01
When 1A00=1configure output:
0= Heating/reverse
1= Cooling/direct
2= Heating and cooling (2 pipe)
3= Transmit setpoint
When 1A00 = 4: Manual positioning or by time schedule
0 = time schedule only
1 = manual positioning and by time schedule
When 1A00=5, select input (0= function disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U
0–4
0
1A 02
Type of output signal: OFF= 0–10V, 0–20mA, ON= 2–10V, 4–20mA
ON/OFF
OFF
1A 03
Minimum limitation of output signal default and in loop heating mode
0–100%
0
1A 04
Maximum limitation of output signal default and in loop heating mode
0–100%
100%
1A 05
Minimum limitation of output signal in loop cooling mode
0–100%
0%
1A 06
Maximum limitation of output signal in loop cooling mode
0–100%
100%
1A 07
Choose alarm to set output to 100% (output 0%on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1A 08
Choose alarm to set output to 0%. (output 0% on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1A 09
Transmit value (1A00=5): minimum input value
per input
0°C
1A 10
Transmit value (1A00=5): maximum input value
per input
100°C
Output configuration
Analog output configuration (1A)
Set jumpers on the back of the controller: 0–10VDC (default), or 0–20mA.Further define analog outputs with A02.Custom
ranges can be created by setting minimum and maximum signal limits.
A control loop, special function, digital control or analog control sequence is not active until it is assigned an output.
Low and high limit alarms are defined with input parameters. With output parameters assign an
alarm to an output andselect output state. The required output for each alarmcan be
individually selected. Multiple alarms can be signed to one output. If one alarm is selected to
simultaneously activate and deactivate an output, the one to de-activate has precedence.
With manual positioning (1A00=4) position the output by time schedule or directly in 0.5%
steps. Setting 1A01 to 0 will disable manual positioning. The output will then only be controlled by time schedule.
With dehumidifying (1A00=3)the maximum value is taken of cooling and dehumidifying. When the humidity is too high,
cooling will continue to operate, even without a demand for cooling, to dehumidify the air and heating will activate to
maintain comfort.
Inputvalues of inputs and set points of control loops may be transmitted on the analog outputs.
For VAV Function individual minimum and
maximum limits may be assigned for cooling and
heating. In VAV applications maximum cooling
output matches the maximum air volume the
VAV box is set to deliver. As demand for airflow
in cooling mode decreases, airflow dwindles until
it reaches minimum cooling output (1A05). This
minimum will be based on the airflow needed at
design cooling and is typically 10% to 15% of
maximum cooling airflow. When this minimum is
reached the system is in dead-band – neither
heating nor cooling. Minimum airflow in heating
mode is set with 1A03. As the system moves into
heating mode, heating airflow increases until it
reaches the maximum heating output (1A04), typically 30 to 50% of maximum cooling airflow.
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TCI-W-U Universal Controller
OUTPUT CONFIGURATION
Output Priority
1. Alarm level low
2. Alarm level high
3. Operation mode OFF
4. Control function
Parameter
Description
Range
Default
1d00
Enable digital orfloating point output
OFF= 1dand 2D are two digital outputs
ON = 1dand 2D are one floating point output (1d open,2D close)
ON/OFF
OFF
1d01
Select control loop or special function (0= OFF)
1= LP1, 2= LP2
3= Dehumidify (4 pipe, max LP1 cooling, LP2 direct)
4= Manual positioning (open/close)
5= Controllerstate functions
0–5
0
1d02
If1d01=1 configure output:
0=Heating/reverse
1= Cooling/direct
2= Heating and cooling (2 pipe)
If 1d01 = 4 Manual positioning or time schedule controlled
0 = Time schedule controlled only
1 = Manual positioning and time schedule controlled
If 1d01=5 select state functions:
0= ON if controller operation state is ON
1= ON while demand on any output
2= ON while controller in heating mode and operation state ON
3= ON while controller in cooling mode and operation state ON
0–5
0
1d03
Running time (from open to close)
0–255s
90s
1d04
Switching difference for floating point signal
0–100s
5s
1d05
Not used
1d06
Choose alarm to set output to 100% (output 0% on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1d07
Choose alarm to set output to 0% (output 0% on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1d08
Not used
1d 09
Not used
Digital output configuration (1d, 2D)
Floating point outputs (1d00 or 2D00=ON)
Low and high limit alarms are defined with input parameters. With output parameters assign an
alarm to an output and select output state. Each alarm’s required output can be individually
selected. Multiple alarms can be signed to one output. Should one alarm be simultaneously
selected to activate and deactivate the output, the one to de-activate has precedence.
With manual positioning (1d01=4) position the output directly (open/close).
With dehumidifying (1d01=3) the maximum value is taken of cooling and dehumidifying. When the humidity is too high,
cooling will continue to operate, even without a demand for cooling, to dehumidify the air and heating will activate to
maintain comfort.
For floating point outputs the running time of the actuator used needs to be specified with 1d03. Running time is defined
as the time required for the actuator to run from fully open to fully closed and vice versa. Actuators with a fixed running
time are recommended. Once fully open or fully closed the running time for the actuator is extended for a full run-time
cycle. This will allow the actuator position to be synchronized in case it has been moved during off time or an actuator
with variable running time was used. Use switching differenceparameter 1d04, to reduce the switching frequency of the
actuator. The actuator will only move if the difference to the current actuator position is larger than this parameter.
State functions (1d01=5)activate the output based on certain conditions with or without a demand for heating or cooling,
in either comfort or standby mode. In Energy Hold OFF mode (EHO) the output will be off.
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TCI-W-U Universal Controller
OUTPUT CONFIGURATION
Output Priority
1. Alarm level low
2. Alarm level high
3. Operation mode OFF
4. Control function
Parameter
Description
Range
Default
1d01
Select control loop or special function (0= OFF)
1= LP1, 2= LP2
3= Dehumidify (4 pipe, max LP1 cooling, LP2 direct)
4= Manual positioning (on/off)
5= State functions
0–5
0
1d02
When 1d01=1, configure output:
0= Stage 1 heating/reverse
1= Stage 1 cooling/direct
2= Stage 1 heating and cooling, reverse and direct
3= Stage 2 heating/reverse
4= Stage 2 cooling/direct
5= Stage 2 heating and cooling, reverse and direct
When 1d01=5,select state functions:
0= ON if controller operation state is ON
1= ON while demand on any output
2= ON while controller in heating mode and operation state ON
3= ON while controller in cooling mode and operation state ON
0–5
0
1d03
Switch-off delay (time output active with no more demand)
Delay is in seconds or minutes depending on d09
0–255
90sec
1d04
Switch-on delay(time demand active before output on)
In state mode 1d01=5 outputs disabled during switch-on delay
Delay is in seconds or minutes depending on d09
0–255
5 sec
1d05
Activate PWM, set cycle time, seconds (>0activates,0 deactivates)
0–1650s
0s
1d06
Choose alarm to set output to ON (output OFF on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1d07
Choose alarm to set output to OFF (output OFF on conflicting alarms)
Alarm: 1 2 3 4 5 6 7 8
ALA1–ALA8
1d08
Display fan symbol while active
ON/OFF
OFF
1d 09
Binary switching delays in minutes or seconds
OFF = delays are in seconds, ON = delays are in minutes
ON, OFF
OFF
Digital outputs (1d01, 2D01=OFF)
Low and high limit alarms are defined with input parameters. With output parameters assign an
alarm to an output and select output state. Each alarm’s required output can be individually
selected. Multiple alarms can be signed to one output. Should one alarm be simultaneously
selected to activate and deactivate the output, the one to de-activate has precedence.
With manual positioning (1d01=4) position the output directly (ON/OFF).
With dehumidifying (1d01=3) the maximum value is taken of cooling and dehumidifying. When the humidity is too high,
cooling will continue to operate, even without a demand for cooling, to dehumidify the air and heating will activate to
maintain comfort.
State functions (1d01=5)activate the output based on certain conditions with or without a demand for heating or cooling,
in either comfort or standby mode. In Energy Hold OFF mode (EHO) the output will be off.
Pulse width modulation (PWM) mode is enabled with 1d05. In PWM mode the digital output will be switched on/off once
per cycle. The on and off times are calculated according to the PI settings of the respective control sequence (see control
loop Parameters L09–L15).TCI-W11-U and TCI-W22-U use relays for the digital outputs. It is not recommended to use
cycle times below 100 seconds as the lifetime of the relays will be shortened with frequent switching. For PWM
applications requiring cycle times below 100 seconds we recommend using TCI-W13 with TRIAC outputs.
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TCI-W-U Universal Controller
AUX FUNCTIONS CONFIGURATION
Parameter
Description
Range
Default
Fu 00
Select compensation input (0= function disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U
0–4
0
Fu 01
Winter compensation setpoint setback
OFF= shift toward control loop heating set point minimum
ON= shift toward control loop heating set point maximum
ON/OFF
OFF
Fu 02
Winter compensation lower limit value – end shift
per input
5°C(41°F)
Fu 03
Winter compensation upper limit value – start shift
per input
20°C(68°F)
Fu 04
Summer compensation setpoint setback
OFF= shift toward control loop cooling set point minimum
ON= shift toward control loop cooling set point maximum
ON/OFF
ON
Fu 05
Summer compensation lower limit value – start shift
per input
35°C(95°F)
Fu 06
Summer compensation upper limit value – end shift
per input
40°C(104°F)
Fu 07
Show hot/cool symbol while compensation active
ON/OFF
OFF
Fu 08
Select comfort/economy changeover input (0= disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U
0–4
0
Fu 09
Economy activation delay (seconds)
-1275s
300s
Fu 10
Input limit 1
per input
10
Fu 11
Input limit 2
Per input
90
Standby
Mode
Mode
Comfort
Input
Limit 2 > Limit 1
Comfort
Standby
Input
Limit 1 > Limit 2
Limit 1 Limit 2 Limit 2 Limit
1
1L03
FU04-OFF
Winter Compensation – FU01
Summer Compensation – FU04
1L02
T [°C,F],
U[V,mA]
FU01-ON
1L01
FU01-OFF
Set point
Min/max
FU04-ON
1L04
FU06
W
Auxiliary functions
Summer/winter compensation
Comfort/economy mode changeover
Summer/winter compensation changes the set point due to a change in an input value, typically, but not limited to, an
outdoor temperature input. Winter compensation starts when outside temperature drops below the upper limit of winter
compensation (FU03). At maximum winter compensationthe actual set point will be equal to the control loop’smaximum
heating set point (L02). Summer compensation starts when outside temperature exceeds the lower limit for summer
compensation (FU05). At maximum summer compensationthe actual set point will be equal to the control
loop’smaximumcooling set point (L04). Activatesummer/winter compensation with control loop configuration
parameter(L05).
Use comfort/economy mode changeover with key card switches, occupancy sensors, etc. Set input limit 1 and 2 with
possibilities below. Example: When Limit 2 is greater than Limit 1, switch comfort-to-economy at the lower value,
economy-to-comfort at the higher value. Activatecomfort/economy changeoverwith loop configuration parameter(L07).
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TCI-W-U Universal Controller
AUX FUNCTIONS CONFIGURATION
Parameter
Description
Range
Default
Fu 12
Select enable–disable input (0=function disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U
0–4
0
FU 13
Manual override permitted (without waiting for delay). This function allows
starting the controller, even the enable conditions are not met. The controller
will switch off again if the running conditions are not met until the disable
delay is expired.
ON/OFF
OFF
Fu 14
Enable delay (seconds)
0–1275s
0
Fu 15
Disable delay (seconds)
0–1275s
300
Fu 16
Range of limits:
OFF = When limit 2 is greater thanlimit 1, enable when input value is greater
than limit 2,disable when input value is less thanlimit 1. When limit 2 is less
thanlimit 1, enable when input value less than limit 1, disable when input
value is greater thanlimit 2.
ON = When limit 2 is greater thanlimit 1enable when input value is between
limit 1 andlimit 2. When limit 2 is less thanlimit 1, enable when input value
below limit 2 or above limit 1
ON/OFF
OFF
Fu 17
Input limit 1
per input
10
Fu 18
Input limit 2
Per input
90
Fu 19
Disable in case of alarms
Selection
Limit 2 > Limit 1
Limit 1 > Limit 2
Enable
Disable
Input
Mode
Enable
Disable
Input
Mode
FU16 = OFF
FU16 = ON
Enable
Disable
Input
Mode
Enable
Disable
Input
Mode
Limit 1 Limit 2 Limit 2 Limit 1 Limit 1 Limit
2
Limit
2
Limit
1
Enable/disable
Enable or disable the controller based on desired input values, such as high or low temperature, occupancy sensor,
window contact, etc. Can be used as and function where several conditions must be met before disable or enable. Time
schedules do not override, but manual override is permitted. Delay times may be assigned for both enable and disable
(allows for the controller to start before validation of operation values takes place). Set input limit 1 and 2 with options
below. Example: With FU16=OFF, and Limit 2 > Limit 1, switch enable-to-disable at Limit 1, disable-to-enable at Limit 2.
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TCI-W-U Universal Controller
AUX FUNCTIONS CONFIGURATION
Parameter
Description
Range
Default
Fu 20
Select heat/cool changeover input (0=function disabled):
1= 1T, 2= 1H, 3= 1U, 4= 2U, 5= h/c status loop 1, 6= h/c status loop 2
0–6
0
Fu 21
Cooling activation delay (seconds)
0–1275s
300
Fu 22
Input limit 1
per input
20
Fu 23
Input limit 2
per input
40
Cool
Mode
Mode
Heat
Input
Limit 2 > Limit 1
Heat
Cool
Input
Limit 1 > Limit 2
Limit 1 Limit 2 Limit 2 Limit
1
Heating/cooling mode changeover
Switch heating/cooling state based on a universal input value. The input may be from a supply media (air or water) or
outdoor air temperature sensor. For supply media temperature we recommend switching to cooling at 16°C/61°F and to
heating at 28°C/83°F. For outdoor temperature we recommend switching to cooling at 28°C/83°F and to heating at
16°C/61°F outdoor temperature. These recommendations are given as suggestions. The ideal settings may be different
on the actual project depending on climatic and system conditions.
The change between heating and cooling is delayed to avoid unnecessary switching (FU21). Heat/cool status of one
control loop may also be determined by the heat/cool state of the other loop (FU20= 5 or 6). The control loop used to
determine the heat /cool state must be set to demand-based heating and cooling with (L23). Set limit 1 and limit 2 to
switch between heating and cooling with options below. Example: When Limit 2 is greater than Limit 1, switch heat to
cool at Limit 1, cool to heat at Limit 2. For binary open/close contact, open is a high value (100%), closed is a low value
(0%).
Doc: 70-07-0140, V1.2, Date: 20170123 © Vector Controls GmbH, Switzerland Page 18
Subject to alteration
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