Velbus VMB1TC User manual

V
V
VM
M
MB
B
B1
1
1T
T
TC
C
C
Temperature control module for the
Velbus system

2 VMB1TC Temperature controller manual – rev 5.0
CONTENTS
CONTENTS ......................................................................................................................................... 2
DESCRIPTION..................................................................................................................................... 4
CHARACTERISTICS ........................................................................................................................... 4
VELBUS CHARACTERISTICS ........................................................................................................... 6
EMBEDDING THE TEMPERATURE CONTROLLER ......................................................................... 8
EMBEDDING A TEMPERATURE SENSOR ....................................................................................... 9
EMBEDDING A TEMPERATURE CONTROLLER TOGETHER WITH A SENSOR ......................... 10
OVERVIEW HEATING INSTALLATION............................................................................................ 11
CONNECTION ................................................................................................................................... 12
Connecting the temperature controller VMB1TC .............................................................................................................12
Connecting the temperature sensor VMB1TS..................................................................................................................12
Relay cabinet wiring .........................................................................................................................................................13
Terminator ........................................................................................................................................................................14
Addressing........................................................................................................................................................................14
Allocate the relay channels...............................................................................................................................................14
Allocate a relay channel to control valve 1 .......................................................................................................................15
Allocate a relay channel to control valve 2 .......................................................................................................................16
Allocate a relay channel to control valve 3 .......................................................................................................................17
Allocate a relay channel to control the fan .......................................................................................................................18
Allocate a relay channel for day mode of the boiler .........................................................................................................19
Allocate a relay channel for the circulation pump.............................................................................................................20
SCREEN INDICATIONS .................................................................................................................... 21
LED INDICATION .............................................................................................................................. 21
BUTTON FUNCTIONS ...................................................................................................................... 22
MENU STRUCTURE.......................................................................................................................... 23
Direct access menu ..........................................................................................................................................................23
Extended menu.................................................................................................................................................................24
CONFIGURATION OF THE TEMPERATURE CONTROLLER......................................................... 26
Choice of language...........................................................................................................................................................26
Temperature read-out (°Celsius or °Fahrenheit) ..............................................................................................................27
Master clock......................................................................................................................................................................28
Global alarm .....................................................................................................................................................................29
Battery backup..................................................................................................................................................................30
Addressing........................................................................................................................................................................32
Assign an action to the wake-up time...............................................................................................................................33
Assign an action to the go-to-bed time.............................................................................................................................36
Searching for temperature sensors ..................................................................................................................................38
Setting the clock ...............................................................................................................................................................39
Setting the alarm clock .....................................................................................................................................................41
Disabling the alarm clock function ....................................................................................................................................43
Setting the display contrast ..............................................................................................................................................44
Setting the backlight of the display ...................................................................................................................................45
CONFIGURATION OF THE TEMPERATURE SENSORS ................................................................ 47
Assign sensor names .......................................................................................................................................................47
Defining zones ..................................................................................................................................................................49
Change the default zone names.......................................................................................................................................51
Heating or cooling mode...................................................................................................................................................53
Lock or unlock local mode setting ....................................................................................................................................54
Default duration of temporary mode (default sleep time) .................................................................................................55
Low temperature alarm.....................................................................................................................................................56
High temperature alarm....................................................................................................................................................57
Anti-freeze temperature....................................................................................................................................................58
Heating limit ......................................................................................................................................................................59
Minimum cooling temperature ..........................................................................................................................................60

VMB1TC Temperature controller manual – rev 5.0 3
Maximum cooling temperature .........................................................................................................................................61
Hysteresis temperature ....................................................................................................................................................62
Temperature difference ....................................................................................................................................................63
Difference sensor..............................................................................................................................................................64
Protecting the circulation pump ........................................................................................................................................65
Protecting the valves ........................................................................................................................................................66
Calibrating the sensor.......................................................................................................................................................67
VERIFY SOFTWARE VERSION........................................................................................................ 68
PIN CODE PROTECT THE EXTENDED MENU................................................................................ 69
OPERATING THE TEMPERATURE SENSOR VMB1TS .................................................................. 71
Anti-freeze, night, day or comfort mode indication ...........................................................................................................71
Cooling or heating mode indication ..................................................................................................................................71
Air-conditioner or heater active indication ........................................................................................................................71
Operation ..........................................................................................................................................................................72
OPERATING THE TEMPERATURE CONTROLLER VMB1TC ........................................................ 73
Select room or zone .........................................................................................................................................................73
Recall and change the desired temperature ....................................................................................................................74
Temporarily switching between comfort, day, night or anti-freeze mode .........................................................................74
Setting the sleep time (temporary mode) .........................................................................................................................76
Holiday setting ..................................................................................................................................................................77
Summer setting.................................................................................................................................................................78
Setting the comfort, day and night temperature ...............................................................................................................79
STATISTICS ...................................................................................................................................... 81
Requesting statistics.........................................................................................................................................................81
Reset statistics..................................................................................................................................................................83
PROGRAM INSTRUCTIONS LOCATION ......................................................................................... 84
PROGRAMMING ............................................................................................................................... 86
Overview program instruction...........................................................................................................................................88
Entering a new program instruction..................................................................................................................................89
Changing a program instruction .......................................................................................................................................91
Removing a program instruction.......................................................................................................................................93
DIFFERENTIAL THERMOSTAT........................................................................................................ 94
The passage automatically 3° cooler than the office........................................................................................................95
Passive cooling of a bedroom ..........................................................................................................................................99

4 VMB1TC Temperature controller manual – rev 5.0
DESCRIPTION
The temperature controller (VMB1TC) forms in combination with one or more temperature sensors (VMB1TS) and relay
modules (VMB1RY or VMB4RY) a programmable thermostat to control a heating or cooling installation.
The different sensors can be adjusted, operated and programmed from one location by using this temperature controller.
Multiple controllers at multiple locations are possible.
It is also possible to define zones to group the sensors.
CHARACTERISTICS
Forms a programmable thermostat together with a Velbus temperature sensor and relay modules
Ideal to control the heating or air-conditioning of your residence
Can control a maximum of 32 temperature sensors (VMB1TS)
Up to 7 zones can be defined
Each sensor/zone can be placed in automatic mode (to follow the program), temporary mode (the program is suspended
for a certain time) or manual mode (the program is disabled for an undefined time period)
Configurable both locally or via PC (using the serial or USB interface in combination with the Velbus link software)
All settings are retained in case of a power cut
Relay control through the Velbus e.g. for alarms
Possibility to set up a differential thermostat using two sensors
LED indication
•When the heater or cooler is active
•When in temporary mode (sleep timer), a LED is flashing
•During high or low temperature alarm, a LED will flash
•When power supply is detected
•When receiving or transmitting data over the Velbus
LCD:
•2 lines of 16 characters to indicate the name of the selected sensor/zone, the selected mode (comfort, day or night,
anti-freeze), the temperature and the time
•On screen indication of manual mode, temporary mode, duration of temporary mode (sleep time), key guard and
cooling function
•Adjustable white backlight
•Possibility to adjust backlight automatically every day (2 times)
•Adjustable contrast
Clock
•Built-in clock with day indication
•Adjusting one clock synchronizes all other clocks on the Velbus system.
•Possibility to use one clock as reference for all other clocks in the system
•Wake-up function: 2 moments (wake-up time and sleep time) can be set
Local control
•Scroll through the different sensors with one button.
•Direct access to change the mode (comfort, day, night or anti-freeze) and the desired temperature.
•A short press on the menu button will open the short configuration menu:
•set the comfort, day or night temperature
•switch the alarm clock on or off, configure the wake-up and sleep times)
•adjust the clock
•configure the duration of the sleep mode (sleep time)
•Press and hold the menu button (4s) to enter the extended configuration menu:
•enter or change program instructions
•configure the sensors (cooling/heating, lock/unlock control, sleep time, low and high temperature alarm, anti-freeze
temperature, upper heat temperature, lower and upper cool temperature, hysteresis, temperature difference,
unblock pump/valve, zone number, difference sensor, sensor calibration and sensor name)
•select language, read out (°C or °F), reference clock (on/off), alarm time (global/local), emergency power supply
(on/off) or change PIN
•set the address (254 possible), link the alarm output or search for all sensors present on the Velbus
•change the contrast and the backlight of the display
•recall statistics (minimum, maximum temperature and duration of heating/cooling)
•The extended configuration menu can be secured by a PIN.
•The menu is closed automatically after ±1 minute of inactivity.

VMB1TC Temperature controller manual – rev 5.0 5
Programming
•A program instruction can switch a sensor between comfort, day, night or anti-freeze mode at a certain time.
•Possibility to enter program instructions that are applicable for all zones or for all sensors in a defined zone.
•Up to 31 program instructions can be saved per sensor or zone.
•Program types:
•day programs: every Monday, Tuesday, Wednesday, Thursday, Friday, Saturday or Sunday
•working day programs: from Monday up to and including Friday or Saturday
•weekend programs: every Saturday and Sunday
•week programs: every day
•Wake-up time and sleep time can be used inside program instructions.
Power supply
•Required power supply: 12 to 18VDC
•Consumption backlight off: 25mA
•Maximum consumption (LEDs activated, backlight max.): 50mA
•Battery emergency power supply: 3V Lithium battery (CR2032 included)
•Consumption emergency power supply not active: 0.5µA
•Consumption emergency power supply activated: 200µA
•Display warning when battery needs replacement
Dimensions
•Module (L x B x H): 66 x 44 x 40mm
•Dimensions including cover plate (L x B x H): 118 x 80 x 40mm
•Cover plate not included

6 VMB1TC Temperature controller manual – rev 5.0
VELBUS CHARACTERISTICS
•2-wire communication for Velbus data and 2 wires for power supply
•data transmission: 16.6 Kbit/s
•Serial data protocol: CAN (Controller Area Network)
•Short circuit proof (towards negative or positive pole of the power supply)
•LED indication when receiving or transmitting data over the Velbus
•bus error indication: 2 short flashes of the LEDs
•auto recovering after 25 seconds when a bus error occurs
The temperature controller module can be given a designation with a maximum of 16 characters.
The temperature controller module can transmit following messages:
•the current time
•the output status of the alarm clock
•the controller status
•the controller type (including software version)
•the controller name
•the communication error counter
•a program instruction
•the memory content
The temperature controller module can transmit following instructions:
•Request the:
omodule type (to search for sensors)
ocurrent time
omemory content
osensor name
osensor set-up
osensor status
osensor temperature
osensor time statistics
oprogram instruction
•Set the:
oprogram storage location
oprogram availability
oprogram instruction
osensor zone
odesired temperature for a sensor
osensor comfort temperature for heating
osensor day temperature for heating
osensor night temperature for heating
osensor anti-freeze temperature for heating
oupper heat temperature
otemperature difference for fast heating/cooling or differential thermostat
ohysteresis temperature for a sensor
osensor comfort temperature for cooling
osensor day temperature for cooling
osensor night temperature for cooling
olower limit of the cooling preset range
oupper limit of the cooling preset range
osensor calibration factor
olow temperature alarm of a sensor
ohigh temperature alarm of a sensor
•put the sensor in:
oheating mode
ocooling mode
ocomfort mode
oin day mode
onight mode
oanti-freeze mode
•synchronize the alarm clock time
•lock the local sensor controls
•unlock the local sensor controls
•standard duration for temporary mode (sleep time) for a sensor

VMB1TC Temperature controller manual – rev 5.0 7
•reset the minimum and/or maximum temperature
•reset the time statistics of a sensor
•set or reset the de-blocking of the valve and/or circulation pump
•write to sensor memory
•The address of the linked sensor to set up a differential thermostat
The temperature controller module can receive following messages:
•the sensor type
•the sensor name
•the sensor temperature
•the sensor status
•the sensor settings
•the sensor time statistics
•the sensor program instruction
The temperature controller module can receive following instructions:
•request the current time
•set the current time
•synchronize the alarm clock
•set the alarm clock times
•request the module type
•request the communication error counter
•request the controller status
•request the controller name
•request the memory content
•change the memory content
•set the sensor program storage location
•set the sensor zone
•request a program instruction
•change a program instruction

8 VMB1TC Temperature controller manual – rev 5.0
EMBEDDING THE TEMPERATURE CONTROLLER
The temperature controller VMB1TC can be embedded in combination with a Velbus cover plate VMBFDG or VMBFLG.
Push the modules from the back into the cover plate.
It is also possible to use a 3-module wide frame with cover plate from the BTicino Living series. The module must be
pushed into the build-in frame from the front.
It is also possible to use a 3-module wide frame with cover plate from the BTicino Light or Light Tech series. The module
must be pushed into the build-in frame from the front.
To build the controller in into a hollow wall, use a hollow wall pattress.

VMB1TC Temperature controller manual – rev 5.0 9
EMBEDDING A TEMPERATURE SENSOR
The temperature sensor VMB1TS can be embedded in combination with two blank frames VMBFBI and a Velbus cover
plate VMBFDG or VMBFLG. Push the modules from the back into the cover plate.
It is also possible to use a 2- or 3-module wide frame with cover plate from the BTicino Living series. The module must be
pushed into the build-in frame from the front.
It is also possible to use a 2- or 3-module wide frame with cover plate from the BTicino Light or Light Tech series. The
module must be pushed into the build-in frame from the front.
To build the sensor in into a hollow wall, use a hollow wall pattress.

10 VMB1TC Temperature controller manual – rev 5.0
EMBEDDING A TEMPERATURE CONTROLLER TOGETHER WITH A SENSOR
The controller (VMB1TC) can be embedded together with a sensor (VMB1TS) in a 4-module wide frame with cover plate
from the BTicino Living series. The module must be pushed into the build-in frame from the front.
The controller (VMB1TC) can be build-in together with a sensor (VMB1TS) in a 4-module wide frame with cover plate
from the BTicino Light of Light Tech series. The module must be pushed into the build-in frame from the front.
To build the controller and sensor in into a hollow wall, use a hollow wall pattress.

VMB1TC Temperature controller manual – rev 5.0 11
OVERVIEW HEATING INSTALLATION
A heating installation usually consists of radiators or convectors, a boiler, circulation pump and a collector with valves for
every radiator group.
Every room is equipped with a temperature sensor VMB1TS which is controlled by one or multiple temperature controllers
VMB1TC. The sensors in turn steer the relay modules VMB4RY (or VMB1RY) that control the valves. As soon as one of
the valves is opened, a relay channel can activate the circulation pump and when one of the sensors is in day or comfort
mode, a relay channel can put the boiler in day mode. When convectors with built-in fan are used, a relay channel can
steer this fan in case the room temperature deviates too much from the desired temperature, e.g. to speed up heating in
the morning.

12 VMB1TC Temperature controller manual – rev 5.0
CONNECTION
To interconnect the Velbus modules the use of twisted-pair cable (EIB 2x2x0.8mm2, UTP 8x0.51mm - CAT5 or
equivalent) is recommended.
Connect the bus to the module (beware of the polarity).
Connect the 12V to 18V direct current to the module (beware of the polarity).
Connecting the temperature controller VMB1TC
Connecting the temperature sensor VMB1TS

VMB1TC Temperature controller manual – rev 5.0 13
Relay cabinet wiring

14 VMB1TC Temperature controller manual – rev 5.0
Terminator
Normally only 2 ‘TERM’ terminators must be used in a complete Velbus installation. Usually this will be on one module
inside the distribution box and on the module which is physically located furthest from the distribution box.
On all other modules, the terminator must be removed.
Remark:
In case the wiring contains a lot of branches, still only one terminator is placed on one module inside the distribution box
and one on the module which is physically located furthest from the distribution box. When communication errors occur,
an additional terminator can be used at the end of another branch. However, the number of terminators should be limited
as more terminators place a heavy load on the bus.
Addressing
Every module on the Velbus system must have its own unique address.
On modules with a rotary switch e.g. the temperature sensor VMB1TS and the relay module VMB4RY the address is set
using the ‘ADDR’ rotary switch (also refer to the manual of the relevant module).
The address of the temperature controller is set via a menu (see § ‘configuration of the temperature controller’ below).
These addresses may not be altered afterwards.
Allocate the relay channels
Every temperature sensor module VMB1TS can steer a relay channel to:
•open the valve that provides hot water to the radiator
•switch on the fan of a convector to speed up heating (when the difference between desired temperature and room
temperature is too high)
•set the boiler in day mode
•switch on the air-conditioning
•switch on the circulation pump (when on of the valves is open)
•generate an alarm at low room temperature (heating system down)
•generate an alarm at high room temperature (valve fails to close)
Every relay channel that is steered by a temperature sensor must be placed in instant control, meaning that the TIME1
and MODE/TIME2 rotary switches of the channel on the relay module must be set to position ‘0’.
The easiest way to allocate those relay channels is by using the Velbus link software via a PC connected to a Velbus
interface (VMB1USB, VMB1RS or VMBRSUSB).
However, it is also possible without the aid of a computer (see manual of the temperature sensor module VMB1TS).
To set up the previous example of a heating system, use following procedures.

VMB1TC Temperature controller manual – rev 5.0 15
Allocate a relay channel to control valve 1
When room temperature drops below the desired value, the temperature sensor sends a request on the bus to energize a
relay. When the room temperature rises above the desired value, another request by the temperature sensor is
transmitted over the bus to de-energize the relay.
In our example, the first temperature sensor must control relay channel 3 of the first relay module to steer the valve.
1. Set the first sensor module in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off.
2. Set the MODE and TIME1 rotary switches for
channel 3 of the first relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the first relay module to ‘C3’.
The ‘MODE 3’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the lowest push button (HEAT) of the
first temperature sensor until the relay is energised
and the red LED on the sensor module flashes.
6. Set the address of the first relay module back to its
original value.

16 VMB1TC Temperature controller manual – rev 5.0
Allocate a relay channel to control valve 2
In our example, the second temperature sensor must control relay channel 4 of the first relay module to steer the valve.
1. Set the second sensor module in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off.
2. Set the MODE and TIME1 rotary switches for
channel 4 of the first relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the first relay module to ‘C4’.
The ‘MODE 4’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the lowest push button (HEAT) of the
second temperature sensor until the relay is
energised and the red LED on the sensor module
flashes.
6. Set the address of the first relay module back to its
original value.

VMB1TC Temperature controller manual – rev 5.0 17
Allocate a relay channel to control valve 3
In our example, the third temperature sensor must control relay channel 1 of the second relay module to steer the valve.
1. Set the third sensor module in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off.
2. Set the MODE and TIME1 rotary switches for
channel 1 of the second relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the second relay module to ‘C1’.
The ‘MODE 1’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the lowest push button (HEAT) of the
third temperature sensor until the relay is energised
and the red LED on the sensor module flashes.
6. Set the address of the second relay module back to
its original value.

18 VMB1TC Temperature controller manual – rev 5.0
Allocate a relay channel to control the fan
In our example, the fan of the convector must be switched on when the temperature measured by the third temperature
sensor deviates too much from the desired value. The fan is steered by relay channel 2 of the second relay module.
1. Set the third sensor module in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off.
2. Set the MODE and TIME1 rotary switches for
channel 2 of the second relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the second relay module to ‘C2’.
The ‘MODE 2’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the second push button (TURBO) of
the third temperature sensor until the relay is
energised and the red LED on the sensor module
flashes.
6. Set the address of the second relay module back to
its original value.

VMB1TC Temperature controller manual – rev 5.0 19
Allocate a relay channel for day mode of the boiler
Some boilers can be set to day or night mode. In night mode, the boiler temperature is set approximately 10 degrees
lower. In our example, the boiler must be switched to day mode as soon as one of the sensor modules is in day or
comfort mode. This is accomplished through relay channel 1 of the first relay module.
1. Set all sensor modules in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off.
2. Set the MODE and TIME1 rotary switches for
channel 1 of the first relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the first relay module to ‘C1’. The
‘MODE 1’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the third push button (DAY) of the first
temperature sensor until the relay is energised and
the red LED on the sensor module flashes.
6. Press and hold the third push button (DAY) of the
second temperature sensor until the relay is
energised and the red LED on the sensor module
flashes.
7. Press and hold the third push button (DAY) of the
third temperature sensor until the relay is energised
and the red LED on the sensor module flashes.
8. Set the address of the first relay module back to its
original value.

20 VMB1TC Temperature controller manual – rev 5.0
Allocate a relay channel for the circulation pump
Some valves have a contact that closes when the valve is open. By wiring all the contacts in parallel, the circulation pump
can be steered. For valves that do not have these contacts, a relay can be assigned to the temperature sensors to steer
the circulation pump.
In our example the pump must be active as soon as one of the sensor modules indicates heating is required. This is done
through relay channel 2 of the first relay module.
1. Set all sensor module in anti-freeze mode by
pressing the push button on the front panel
repeatedly until all LEDs are off
2. Set the MODE and TIME1 rotary switches for
channel 2 of the first relay module to ‘0’ (instant
control).
3. Remember the address of this relay module to
reinstate it later on.
4. Set the address of the first relay module to ‘C2’. The
‘MODE 2’ LED flashes to indicate push button
learning mode (PBM).
Mode/
F
9
Time2
F
9
C
A
B
D
E
4
5
6
7
8
3
0
1
2
9
F
ADDR.
E
D
C
B
A
3
2
D
E
4
5
8
7
6
A
B
C
1
0
2
3
5
4
6
7
8
0
1
Mode/Time2
Trig Release
Turn On Delay
Non-Retrigger
Turn Off Delay
4 Channel relay module
Mode4
30'A:30'
Mode1
Ax
Bx
CH1
RxON
Learn
Fx
Ex
Dx
Cx
:ON
PBM
TGL
:
:
OFF:
Tx
CH2
x=CH1...4
TG1
TG2
:
:ST2
ST1
:
8x
9x :
B:1h
C:2h
F:Toggle
E:1day
D:5h
Mode2
VMB4RY
velleman
CH3 CH4
Mode3
5h
Toggle
1day
1h
2h
Time1
Time2
Mode/
Out2
Time1
Time2
Mode/
ADDR.
Time1
Time2
Mode/
Out1
Time1
2:10s
3:15s
5:1'
6:2'
4:30s
0:Moment
1:5s
8:10'
9:15'
7:5'
Time1
Time2
Mode/
Blink
10'
15'
5'
Start-stop
Staircase
Out3 Out4
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
9
F
E
D
C
B
A
3
2
4
5
8
7
6
1
0
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
F
9
D
A
B
C
E
3
5
4
6
7
8
0
1
2
5. Press and hold the pushbutton on the front panel of
the first temperature sensor and simultaneously
press and hold the lowest push button (HEAT) until
the relay is energised and the red LED on the sensor
module flashes. First release the lowest push button
(HEAT) followed by the push button on the front
panel.
6. Press and hold the pushbutton on the front panel of
the second temperature sensor and simultaneously
press and hold the lowest push button (HEAT) until
the relay is energised and the red LED on the sensor
module flashes. First release the lowest push button
(HEAT) followed by the push button on the front
panel.
7. Press and hold the pushbutton on the front panel of
the third temperature sensor and simultaneously
press and hold the lowest push button (HEAT) until
the relay is energised and the red LED on the sensor
module flashes. First release the lowest push button
(HEAT) followed by the push button on the front
panel.
8. Set the address of the first relay module back to its
original value.