Viadrus S.Control Touch Instruction Manual

CONTROL UNIT S.Control
for boilers VIADRUS A0C and VIADRUS A2C
M
Touch
anual for operation
GB_2016_47
GB_2017_30

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TABLE OF CONTENT page
1 SAFETY INSTRUCTIONS...........................................................................................................................................................................3
2 General information.....................................................................................................................................................................................3
3 Information about documentation.................................................................................................................................................................3
4 Documentation archiving .............................................................................................................................................................................3
5 Used symbols and marking..........................................................................................................................................................................3
6 Directive 2002/96/ES on waste electric and electronic equipment (WEEE)..................................................................................................3
7 USER MENU STRUCTURE........................................................................................................................................................................4
8 Regulator servicing......................................................................................................................................................................................5
8.1 Control description.................................................................................................................................................................................5
8.2 Boiler switching-on and switching-off......................................................................................................................................................5
8.3 IGNITION mode.....................................................................................................................................................................................6
8.4 OPERATION mode................................................................................................................................................................................6
8.5 EXTINGUISHING mode.........................................................................................................................................................................7
8.6 STANDBY mode....................................................................................................................................................................................7
8.7 IDLE mode.............................................................................................................................................................................................7
9 Boiler setting................................................................................................................................................................................................7
9.1 Required boiler temperature setting .......................................................................................................................................................7
9.2 Setting of the fuel level in the boiler fuel reservoir ..................................................................................................................................7
10 Hot water settings........................................................................................................................................................................................8
10.1 Hot service water (HW) settings........................................................................................................................................................8
10.2 HW required temperature settings.....................................................................................................................................................8
10.3 HW reservoir hysteresis....................................................................................................................................................................8
10.4 HW reservoir disinfection...................................................................................................................................................................8
11 SUMMER/WINTER function switching-on....................................................................................................................................................9
12 Mixer circuit settings (MIX)...........................................................................................................................................................................9
12.1 Equithermal regulation ......................................................................................................................................................................9
13 Description of night standby adjustment.....................................................................................................................................................10
14 Manual control...........................................................................................................................................................................................11
15 Favorite menu............................................................................................................................................................................................11
16 Hydraulic schemes ....................................................................................................................................................................................11
16.1 Scheme 1........................................................................................................................................................................................11
16.2 Scheme 2 ........................................................................................................................................................................................12
16.3 Scheme 3........................................................................................................................................................................................13
16.4 Orientational electric scheme (auxiliary)..........................................................................................................................................14
16.5 Connection of temperature sensors.................................................................................................................................................15
16.6 Outdoor sensor connection .............................................................................................................................................................15
16.7 Check of temperature sensors.........................................................................................................................................................16
16.8 Connection of a thermostat of the mixers ........................................................................................................................................16
16.9 Connection of a boiler room thermostat...........................................................................................................................................16
16.10 Connection of a reserve boiler (a reserve source)...........................................................................................................................17
16.11 Connection of alarm signalization....................................................................................................................................................17
16.12 Mixer connection.............................................................................................................................................................................18
16.13 Connection of a circulating pump ....................................................................................................................................................18
16.14 Connection of ecoSTER TOUCH room panel.................................................................................................................................18
16.15 Access to parameters of the regulator through internet....................................................................................................................19
16.16 Feeder calibration ...........................................................................................................................................................................19
17 Structure- service menu............................................................................................................................................................................19
18 SERVICE SETTINGS - code 1992.............................................................................................................................................................20
18.1 Burner service settings....................................................................................................................................................................20
18.2 Boiler service settings .....................................................................................................................................................................21
18.3 CH and HW service settings............................................................................................................................................................21
18.4 Service settings of the heat-exchanger............................................................................................................................................22
18.5 Service settings of the mixer...........................................................................................................................................................22
18.6 Service settings - others..................................................................................................................................................................22
19 Advanced parameters................................................................................................................................................................................22
20 DESCRIPTION OF ALARMS.....................................................................................................................................................................23
20.1 Alarm 2 - Max. boiler temperature exceeding ..................................................................................................................................23
20.2 Alarm 3 - Max. burner temperature exceeding.................................................................................................................................23
20.3 Alarm 4 - Damaged boiler temperature sensor................................................................................................................................23
20.4 Alarm 5 - Damaged burner temperature sensor...............................................................................................................................23
20.5 Alarm 6 - Unsuccessful attempt to ignite the boiler..........................................................................................................................23
20.6 Alarm 7 - Damaged fan...................................................................................................................................................................24
20.7 Alarm 8 - Min. or max. vacuum exceeding.......................................................................................................................................24
20.8 Alarm 9 - Loss of communication.....................................................................................................................................................24

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1 SAFETY INSTRUCTIONS
Requirements related to the safety are specified in separate parts of this manual. Together with them, i tis necessary to observe
mainly the following requirements.
•Before beginning mounting, repairs or maintenance and during performance of all works related to connection, it is unconditionally
necessary to disconnect the power supply and make certain that terminals and electric cables are without voltage.
•Having switched-off the regulator into the standby mode, danger voltage may occur on the regulator’s terminals.
•It is prohibited to use the regulator in violation with its designation.
•It is necessary to select a value of programmable parameters in accordance with the given type of the boiler and the given fuel with regard
to all operational conditions of the boiler. An incorrect selection of parameters may cause an emergency status of the boiler (boiler
overheating, flame lashing-up into the fuel feeder, etc.).
•The regulator is not intrinsically safe equipment, and in case of a failure it can be a source of a spark or high temperature, which in the
presence of flammable dust or gas can cause a fire or an explosion.
•The programmed parameters may be only modified by a person, who is acquainted with this manual.
•The regulator may be only used in heating circuits produced in accordance with legal regulations.
•Electric installations, in which the regulator is operated, have to be protected by a protecting element properly selected according to the used
loading.
•It is not allowed to use the regulator with the damaged box.
•In no case it is allowed to modify the structure of the regulator.
•An electronic disconnection of connected devices is used in the regulator (a function of type 2Y according to EN 60730-1) and a micro-
disconnection (a function of type 2B according to EN 60730-1).
•No access to the regulator may be allowed for children.
2 General information
The regulator is determined for control of operation of the pellet boiler with using an optical flame brightness sensor. The device has a compact
box, which is easy installable.
It can control operation of a direct circuit of the central heating, operation of the circuit of hot service water and also operation of three heating
circuits with a mixer. Adjustable temperature of the heating circuits may be entered on the basis of data from the extern sensor. A possibility of
cooperation with room thermostats, independent for each heating circuits, helps to maintain a comfort temperature in heated premises. Beside
of that, if needed the device switches-on a reserve boiler (gas or oil one). The regulator can cooperate with an additional control panel placed
in habitable rooms, or an internet module. . The regulator can be used in households and similar units, as well as in light industry buildings.
3 Information about documentation
The instruction manual of the regulator is an addition for the boiler documentation. Together with instructions in this manual, it is necessary to
proceed mainly in accordance with the boiler documentation. The instruction manual of the regulator is divided into two parts: for users and for
an installer. However the both parts contain important information, which influence the safety, that’s why the user is obliged to acquaint with the
both part of the manual.
The manufacturer is not responsible for damages caused by breach of this manual.
4 Documentation archiving
We kindly ask you to archive properly this manual for mounting and operation and all other valid documentation in order to have it at the
disposal when needed.
In case of removal or selling the device, it is necessary to handover the attached documentation to a new user of an owner.
5 Used symbols and marking
The following graphic symbols and marking is used in the manual:
This symbol means useful information and instructions
The symbol means important information, which could be essential from the point of view of property damaging, protection of health
or life of people or domestic animals.
Warning: important information was marked by symbols to simplify work with the manual. However it doesn’t relieve a user and an
installer of the obligation to observe requirements, which are not marked by graphic symbols!
6 Directive 2002/96/ES on waste electric and electronic equipment (WEEE)
•Dispose packages and the product after finishing its usable life in a proper recycling company.
•Don’t throw up the product together with usual waste.
•It is not allowed to combust the product.

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INSTRUCTION MANUAL FOR S.Control REGULATOR
7 USER MENU STRUCTURE
Informa
tion
Boiler settings
•Adjusted boiler temperature
•Equithermal boiler control
−Switched-off
−Switched-on
•Equithermal boiler curve
•Parallel displacement of equithermal curve
•Thermostat selection
•Power modulation
−Max. burner power
−Correction of pr. fan for max. power
−50% Hysteresis H2
−Middle burner power
−Correction of pr. fan for middle power
−30% Hysteresis H1
−Min. burner power
−Correction of pr. fan for min. power
−Boiler hysteresis
•Regulation mode
−Standard
−Fuzzy Logic
•Fuel level
−Fuel reserve
−Fuel level calibration
•The degree of cleaning
−Normal
−Increased
−Intensive
•Burner cleaning-up
•Boiler night decreasing
−Ignition
−Decreasing
−Schedule – Monday to Sunday
HW settings
•Adjusted HW reservoir temperature
•HW pump mode
−Switched-off
−Priority
−Without priority
•HW reservoir hysteresis
•HW disinfection
−No
−Yes
•HW reservoir night decreasing
−Ignition
−Decreasing
−Schedule – Monday to Sunday
Summer
/
Winter
•Summer mode
−Winter
−Summer
−Auto
•Switch-on temperature for SUMMER mode
•Switch-off temperature for SUMMER mode
MIX 1 – 3 settings*
•Adjusted MIX temperature
•Thermostat selection
•MIX room thermostat
•MIX equithermal control
−Switched-off
−Switched-on
•MIX equithermal curve
•Parallel displacement of equithermal curve
•Room temperature coefficient
•MIX night decreasing
−Ignition
−Decreasing
−Schedule – Monday to Sunday
General settings
•Hours
•Date
•Brightness
•Alarm noise
−Switched-off
−Switched-on
•Language
•Program update
−Update module A
−Update module B
−Update ecoSTER T1
−Update panel
•WiFi settings
−SSID
−Security
−Password
Manual control
Chimney-sweeper
•Chimney-sweeper
•Boiler power
•Time work
Alarms
Regulator turn on
Servis settings
* Unavailable, if a corresponding sensor or an additional module is not connected, or if the parameter is hidden.

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8 Regulator servicing
8.1 Control description
1. Boiler operation mode: FLAME TEST, INGNITION, STABILIZATION, OPERATION, EXTINGUISHING, CLEANING, STANDBY, IDLE,
ALARM, MANUAL
2. Real boiler temperature
3. Required boiler temperature
4. Enter to Menu
5. Information field:
fan
feeder 1 (at the fuel reservoir)
feeder 2 (at the boiler burner)
CH and HW pump
ignitor
Grate mode
6. HW reservoir required temperature
7. HW reservoir real temperature
8. Week day and time
9. Outdoor temperature
10. A field of functions, which influence the required boiler temperature
decrease of the boiler required temperature by the room thermostat – the required temperature in the room is
reached
decrease of the boiler required temperature according to the time schedules
increase of the boiler required temperature for the period of filling the reservoir of HW
increase of the required temperature by the mixer
boiler control according to the outdoor curve
increase of the boiler required temperature for the period of heating the accumulating reservoir
The right and left window on the main display can represent different information. By touching, you can change the viewed information between
the circuits of the mixer (1, 2, 3), the information window and the HW window.
8.2 Boiler switching-on and switching-off
After you touch any place of the display with the description „Boiler is switched-off“, a
message is displayed: „Switch-on regulator?".
After confirmation, the boiler is gone over into the firing phase.
Or it is possible to switch-on the boiler by clicking to the icon and afterward confirm
it in the sliding menu to the icon - Switch-on the regulator.
Proceed by the same way while switching-off the boiler. The regulator will go over into
the extinguishing process. Not until its finishing, a screen with a message „Boiler is
switched-off“ is displayed.

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8.3 IGNITION mode
The Ignition mode serves for automatic firing in the furnace of the boiler. The total duration of the firing-up procedure depends on the setting of
the regulator (feeder running time, heater running time, heating body operation time, ect.) and on which state the boiler was before ignition. The
parameters influencing the ignition procedure are concentrated in the menu Service settings/Burner settings/Ignition.
In case that the firing of the heating chamber was unsuccessful, then the next attempts to fire it will be performed, during which a fuel dose
(feeding time) is decreased to 10 % of the dose in the first attempt.
Other attempts to ignite the boiler are signalized by numbers near the ignitor symbol
Having performed three unsuccessful attempts, the Alarm 6 – Unsuccessful attempt to ignite the boiler is announced. Automatic
continuation of the boiler running is blocked – an intervention of personnel is required. After removal the causes, which disabled the ignition, it
is possible to put the boiler into operation again.
8.4 OPERATION mode
The fan works continually, and it is demonstrated on fig. 1. The fuel feeder switches-on periodically. The cycle consists of the feeder running
time and the feeding stop time.
Fig. №. 1
We can choice two modes of regulation responsible for stabilization of the required boiler temperature, Standard or Fuzzy Logic Boiler
settings/Regulation mode.
Operation in Standard mode
As far as the temperature achieves the required value, the regulator goes into the STANDBY mode.
The regulator is equipped with a mechanism for modulation of the boiler power, which enables to decrease gradually its power, when the boiler
temperature approaches the required value. Three power stages are defined:
- maximum power,
- middle power,
- minimum power.
Values of separate levels of the power are set in the menu Service settings/Burner settings/Operation.
The regulator modulates the power of the burner depending on the required temperature of the boiler and defined hysteresis of Hysteresis H2
and Hysteresis H1 (see fig. 2).
Hysteresis H1 and Hysteresis H2 are accessible in the menu Boiler settings/Power modulation
Configuration of the value of H1 and H2 is possible so that the modulation will go on without an inter-state, i.e. the transition from 100% to 30%
with an omission of 50% power.
Fig. №. 2 Hysteresis H1 and H2 of power modulation
Operation in Fuzzy Logic mode
In Fuzzy Logic mode the regulator makes decision about the burner power, with which the boiler would work so that it keeps the boiler
temperature on the required level. The regulator uses defined power levels as in Standard mode. Parameters Hysteresis H2 and Hysteresis
H1 cannot be adjusted for this mode. Thanks to it, reaching the required temperature is not influenced by a possible incorrect setting the
parameters of Hysteresis H2 and Hysteresis H1. In addition, it enables quicker achievement of the required temperature.
Fuel feeding time Feeding stop time
Fuel feeding time
Feeding stop time
3 power levels 2 power levels
Required boiler temperature
T=85 °C
Required boiler temperature
T=85 °C

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provided the boiler works without thermal accumulation reservoir, and the regulator will be switched over to SUMMER mode,
we recommend operating the regulator in STANDARD mode.
After exceeding the required boiler temperature by o 5 °C the regulator goes over to STANDBY mode.
8.5 EXTINGUISHING mode
After-combustion of remnants of pellets and preparation of the boiler to the idle or the switching-off goes on in EXTINGUISHING mode.
All parameters influencing the extinguishing process are concentrated in the menu:
Service settings →Burner settings →Extinguishing
The regulator stops the fuel feeding and performs cyclic blowdowns for the purpose of after-combustion of the fuel remnants. After dropping
the flame brightness or after the maximum extinguishing time, the regulator goes over into IDLE mode.
8.6 STANDBY mode
The regulator goes over into STANDBY mode automatically and without an intervention of the user:
- In case of the regulation mode STANDARD – after reaching the required boiler temperature,
- In case of the regulation mode Fuzzy Logic – after exceeding the required boiler temperature by 5 °C.
In STANDBY mode the regulator keeps the boiler on the minimum power in order to avoid extinguishing. For this purpose the burner works at a
low power, what under condition of correctly chosen parameters will not cause other temperature growing. The burner power in STANDBY
mode and also other parameters of STANDBY can be displayed in the menu Service settings/ Burner settings/Standby.
The maximum boiler operation time in the Idle mode is defined in the parameter Standby time.If after the lapse of this time, from the moment of
a transition of the regulator into Standby mode, a neediness of repeated operation of the boiler doesn’t occur, then the regulator starts the
extinguishing process of the boiler.
After adjustment of Standby time = 0, the regulator will omits STANDBY mode and goes over immediately into
EXTINGUISHING mode.
8.7 IDLE mode
In IDLE mode, the boiler is extinguished and is waiting for a signal to start operation. The signal to start operation can be as followed:
•decreasing the required boiler temperature under the value of the required temperature reduced by a value of the boiler hysteresis (Boiler
hysteresis),
•at configuration of the boiler operation with an accumulating reservoir, dropping the upper temperature of the accumulating reservoir
under the required value (Accumulating reservoir heating start temperature).
9 Boiler setting
9.1 Required boiler temperature setting
The boiler required temperature can be adjusted in the menu Boiler settings/Required boiler temperature. The adjusted values of these
temperatures are limited by the range of corresponding service parameters of the regulator.
The parameter values: Required boiler temperature,is ignored by the regulator in case that the required temperature of the boiler is controlled
by an extern sensor. Regardless that the temperature adjusted on the boiler is increased automatically in order to enable to heat up the HW
reservoir and heat up the mixers heat circuits.
9.2 Setting of the fuel level in the boiler fuel reservoir
Fuel level indicator switching-on
To switch-on the display of the fuel level, it is necessary to set the value of the parameter Boiler settings/Fuel level/Fuel reserve to the value
higher than 0 (OFF), for example, 10%.
By touching the left or right window on the main screen, you can choose the fuel level indicator.
Recommendation: the fuel level can be also visible on the room panel ecoSTER-Touch (the room panel is not a standard accessories of the
regulator).
Manipulation with the fuel level indicator
After each filling the fuel into the fuel reservoir, it is necessary to press and hold the actual value of the fuel level; afterward the following
message should be displayed:
„Set the reservoir to full 100%“. After selection and confirmation by the button „YES“, the fuel level is set to 100%.
ATTENTION:
You may add fuel in whenever; it means that you don’t need to wait for a total emptying the fuel reservoir. However fuel has to
be always added up to the level corresponding to 100% and set the fuel level on the regulator to 100% - see the description
above.

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Fig. №. 3 Manipulation with the fuel level
Description of function
The regulator calculates the fuel level on the basis of its continuous consumption. Production settings doesn’t need always to correspond to the
real fuel consumption on the boiler, that’s why this method requires a function of the level calibration for its correct function performed by a user
of the regulator. There is no need to use whatever additional sensors of the fuel level.
Fuel level calibration
Fill up the fuel reservoir up to the level, which complies with the full filling-up to 100%, afterward set the value of the parameter Boiler settings
→Fuel level →Fuel level calibration →Full 100%.
Fill up the fuel reservoir up to the level, which complies with the full filling-up to 100%, afterward set the value of the parameter Calibration near
the fuel level indicator. The message Calibration will blink till the time of the programmed point, which corresponds to the minimum fuel level. It
is necessary to check regularly how the fuel level decreases in the reservoir. At the moment when the level drops to the expected level, it is
necessary to set the value of the parameter Boiler settings →Fuel level →Fuel level calibration →Empty 0%.
10 Hot water settings
10.1 Hot service water (HW) settings
The device corrects the hot service water (HW) temperature, provided a HW temperature sensor is connected.
With help of the parameter HW settings →HW pump mode a user may:
•switch-off the HW reservoir heating-up mode, the parameter Switched-off,
•set the HW priority by the parameter Priority – the CH pump will be switched-off to enable quicker filling-up the HW reservoir,
•set the simultaneous operation of the CH pump and HW by the parameterWithout priority .
10.2 HW required temperature settings
The required HW temperature is defined by the parameter:
HW settings →Adjusted HW reservoir temperature.
10.3 HW reservoir hysteresis
At temperature lower than HW adjusted reservoir temperature minus HW reservoir hysteresis, the HW pump is switched-on to fill up the HW
reservoir.
In case of setting a low hysteresis value, the HW pump is switched-on quicker after dropping the HW temperature.
10.4 HW reservoir disinfection
The regulator is equipped with a function of regular heating-up the HW reservoir to temperature of 70 °C. The target of this function is to
liquidate bacterial flora in the HW reservoir. The reservoir disinfection settings are placed in the menu:
HW settings →HW disinfection →Switched-on
It is unconditionally necessary to inform all of users due to a danger of scalding by hot water.
Once a week, at night from Sunday to Monday at 02:00, the regulator increase HW temperature.
After a period of 10 min., during which water in the reservoir is maintained at the temperature of 70 °C, the HW pump is switched-off and the
boiler is returned to the normal operation. Don’t switch-on the disinfection function at the switched-out HW control.

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11 SUMMER/WINTER function switching-on
To switch-on the SUMMER function, which enables filling-up the HW reservoir in the summer without necessity of heating the central heating
installation, it is necessary to set the parameter in the mode Summer/Winter →Summer mode.
All heat consumers in the Summer mode may be switched-off, that’s why it is necessary to ensure even before its switching-on,
whether the boiler is not overheated.
Provided an extern sensor is connected, the SUMMER function may be switched-on automatically by means of a parameter Auto with regard of
other adjusted parameters, at which the function has to be switched on/off in dependence on a value of the extern temperature adjusted in the
parameters: SUMMER switching-on temperature, SUMMER switching-off temperature.
12 Mixer circuit settings (MIX)
Settings of the first mixer circuit are situated in themenu:
Menu →MIX 1 settings
Settings for other mixers are situated in other items of the menu and they are the same for each circuit.
Settings of the mixer without an extern sensor
It is necessary to set the required hot water in the heating circuit manually by means of the parameter Required MIX temperature, for example
to a value of 50 °C. The value has to be on such value, which ensures achievement of the required room temperature.
Having connected a room thermostat, it is necessary to set a value of the decrease of the required mixer temperature by a thermostat
(parameter MIX room thermostat) for example, to a value of 5 °C. This value has to be chosen by a trial and error method. A room thermostat
can be a traditional thermostat (NO and NC) or a room panel ecoSTER TOUCH. After reaction of the thermostat, the required temperature in
the mixer circuit is decreased, which at a sufficient choice of the value of the decreasing can cause a deceleration of the temperature growth in
the heated room.
Settings of the mixer with an extern sensor and with a room thermostat
Set the parameter Equithermal MIX control to Switched-on. Select an equithermal curve according to chapter 12.1. Set the required room
temperature with help of a parameter Parallel displacement according to the formula:
The required room temperature = 20 °C + parallel displacement of the heating curve.
Example:
To achieve a room temperature of 25 °C, the value of the parallel displacement of the heating curve has to be set to 5 °C. To achieve a room
temperature of 18 °C, the value of the parallel displacement of the heating curve has to be set to -2 °C.
In this configuration a room thermostat may be connected, which will balance an inaccuracy of the heating curve in case that the selected value
of the heating curve is too high. In this case it is necessary to set a value of decreasing the required mixer temperature by a thermostat, for
example, to a value of 2 °C. Having opened the thermostat contacts, the required temperature of the mixer circuit would be decreased, which at
a correct selection of the decreasing value causes the deceleration of growth of temperature in the heated room.
Settings of the mixer with an extern sensor and with a room panel ecoSTER TOUCH
Set the parameter Equithermal MIX control to Switched-on. Select an equithermal curve according to chapter 12.1. The regulator ecoSTER
TOUCH shifts the heating curve in dependence on a required room temperature. The regulator deduces the setting from 20 °C, for example, for
the required room temperature = 22°C the regulator shifts the heating curve by 2 °C, for the required room temperature = 18 °C the regulator
shifts the heating curve by -2 °C. In some cases described in chapter 12.1 it would be necessary to shift additionally the heating curve.
In this configuration, the room thermostat can decrease the heating circuit temperature by a constant value, provided that the required
temperature in the room would be achieved. Similarly, as it was described in the previous chapter (it is not recommended), or automatically it
can continually correct the heating circuit temperature.
We don’t recommend applying the both options at the same time.
Automatic correction of the room temperature proceeds according to the formula: Correction = (Required room temperature – Measured room
temperature) x room temperature coefficient /10.
Example:
The required temperature in the heated room (adjusted in ecoSTER TOUCH) = 22 °C.
The measured temperature in the room (through ecoSTER TOUCH) = 20 °C.
The room temperature coefficient = 15.
The required temperature in the heated room (adjusted in ecoSTER TOUCH) = 22 °C. The measured temperature in the room (through
ecoSTER TOUCH) = 20 °C. The room temperature coefficient = 15. The required temperature of the mixer will be increased by (22 °C - 20 °C)
x15/10 = 3 °C. It is necessary to find out a correct value of the parameter Room temperature coefficient. Range: 0…50. The higher a coefficient
value, the higher a required temperature correction. In case of setting to a value „0”, the required mixer temperature would not be corrected.
Warning: Adjustment of too high value of the room temperature coefficient can invoke regular fluctuations of the room temperature!
12.1 Equithermal regulation
Depending on the temperature measured out of the building, it is possible to control both the required boiler temperature, and the mixer circuits’
temperature. In case of a correct heating curve, the heating circuits’ temperature is adjusted in dependence on a value of the outdoor
temperature. Thanks to it, provided that there is selected a heating curve suitable for the given building, the temperature in the room remains
more or less constant – independently from the outdoor temperature.
In case of connection of the room panel, it is necessary to set timely the parameter Room temperature coefficient = 0.

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Fig. №. 4 Heating curves.
Instructions for selection of an optimal heating curve:
- If the outdoor temperature is decreasing, but the room temperature is increasing, it means that the value of the selected heating curve is
too high,
- If the outdoor temperature is decreasing and the room temperature is decreasing as well, it means that the value of the selected heating
curve is too low
- If the room temperature is optimal at the frost weather, but is too low at the warm weather – we recommend increasing the parameter
heating curve parallel displacement and selecting a lower heating curve,
- If the room temperature is too low at the frost weather, and is too high at the warm weather – we recommend decreasing the parameter
heating curve parallel displacement and selecting a higher heating curve.
Buildings with insufficient heat-cladding require settings of the heat curves with higher values, while a heating curve for buildings with good heat-
cladding has a lower value.
The required temperature, calculated according to a heating curve, can be decreased a increased by the regulator, if it exceeds the
temperature range for the given circuit.
13 Description of night standby adjustment
The menu enables setting the time schedules of decreasing of the required temperature.
Time intervals enable to enter decreasing of the required temperature within a specified time interval – for example at night or if a user leaves
the heated rooms (for example, departure to work or school). Thanks to it the required temperature may be decreased automatically without a
loss of the temperature comfort with a simultaneous fuel consumption decreasing.
To activate time intervals, it is necessary to set the parameter Night decreasing to the option Inclusion/Yes. With this parameter you can
adjust by how many °C you want to decrease the temperature. The decreased temperature value is just unique for all time intervals.
It is possible to program a time schedule for each day of the week with an interval of 30 min. (48 changes of the level per day).
The time schedule settings are accessible through the option Schedule.
•Selection of a day in the week, for which you want to set/modify the time schedule.
•Viewing the window of the time schedule setting.
Required time schedule settings:
•set the indicator (2) tot the start of the time interval with the use of the buttons and
•press the button and adjust the required comfort (daily) or economic (night) temperature
•set the indicator (2) tot the end of the time interval with the use of the buttons and
•finish the modification of the given time schedule by pressing the button
•if needed, repeat the above mentioned instructions for the next time schedule
•the button (8) enables copying the time schedule for the next two days in the week
Fig. №. 5 Time interval selection window
Decreasing of the boiler required temperature from a time interval is signalized by the symbol: in the main window of the
display.
teplota zadaná ekvitermně(°C)
venkovní teplota (°C)
1. interval line
2. actually modified interval
3. night temperature
4. daily temperature
5,7 interval selection
6. required temperature selection
8. enter into menu of schedules copying
Equithermal required temperature (°C)
Outdoor temperature (°C)
Night boiler decreasing/Monday
Instructions for correct the heating curve adjustment:
- floor heating 0,2 -0,6
- heating by radiators 1,0 - 1,6
- boiler 1,8 - 4