Tech Controllers EU-3910 SIGMA User manual

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EU-3910 SIGMA

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TABLE OF CONTENTS
1Safety ......................................................................................................................................................................... 3
2Device description...................................................................................................................................................... 4
3How to install the controller ...................................................................................................................................... 4
4How to use the controller .......................................................................................................................................... 6
5Main screen description............................................................................................................................................. 7
6Principle of operation –stages of controller operation............................................................................................. 7
6.1 Fire-up...................................................................................................................................................................... 7
6.2 Operation ................................................................................................................................................................. 7
6.3 Supervision............................................................................................................................................................... 7
6.4 Extinguishing ............................................................................................................................................................ 8
7Main menu................................................................................................................................................................. 8
7.1 Block diagram - main menu ..................................................................................................................................... 8
7.2 Fire-up (throttle on/off) ........................................................................................................................................... 9
7.3 Manual mode ........................................................................................................................................................... 9
7.4 Settings..................................................................................................................................................................... 9
1.1. Use voltage-free contact ................................................................................................................................. 9
1.2. Temperature of contact deactivation.............................................................................................................. 9
1.3. Pre-set room temperature .............................................................................................................................. 9
7.5 Throttle calibration .................................................................................................................................................. 9
7.6 Language ................................................................................................................................................................ 10
7.7 Screen settings ....................................................................................................................................................... 10
7.8 Protections ............................................................................................................................................................. 10
7.9 Factory settings ...................................................................................................................................................... 10
7.10 Fitter’s menu.......................................................................................................................................................... 10
7.11 Service menu.......................................................................................................................................................... 10
8Fitter’s menu............................................................................................................................................................ 11
8.1 internet module ..................................................................................................................................................... 11
8.2 Selecting temperature sensor................................................................................................................................ 11
8.3 Sensor calibration................................................................................................................................................... 11
8.4 Software update..................................................................................................................................................... 11
8.5 Sensor registration ................................................................................................................................................. 12
8.6 List of sensors......................................................................................................................................................... 12
8.7 Sensor removal ...................................................................................................................................................... 12
8.8 Semi-automatic mode............................................................................................................................................ 12
8.9 Software version .................................................................................................................................................... 12
9Controlling the system via eModul app ................................................................................................................... 12
10 Technical data .......................................................................................................................................................... 14
11 Protections and alarms ............................................................................................................................................ 14
PS, 19.01.2022

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1SAFETY
Before using the device for the first time the user should read the following regulations carefully. Not obeying the rules
included in this manual may lead to controller damage. In order to avoid accidents and errors, it should be ensured that every
person using the device has familiarized themselves with the principle of operation as well as security functions of the
controller. If the device is to be put in a different place, make sure that the user manual is stored with the device so that any
potential user has access to essential information about the device. The manufacturer does not accept responsibility for any
injuries or damage resulting from negligence; therefore, users are obliged to take the necessary safety measures listed in this
manual to protect their lives and property.
WARNING
•A live electrical device. Make sure the regulator is disconnected from the mains before performing any activities
involving the power supply (plugging cables, installing the device etc.)
•The device should be installed by a qualified electrician.
•The device is not intended to be operated by children.
WARNING
•The device may be damaged if struck by a lightning. During a thunderstorm, disconnect it from the power supply by
taking the plug out of the power socket.
•Any use other than specified by the manufacturer is forbidden.
•Before and during the heating season, the controller should be checked for condition of its cables. The user should
also check if the controller is properly mounted and clean it if dusty or dirty.
Changes in the products described in the manual may have been introduced subsequent to its completion on
19th January 2022. The manufacturer retains the right to introduce changes to the design. The illustrations may include
additional equipment. Print technology may result in differences in the colours shown.
We are committed to protecting the environment. Manufacturing electronic devices imposes an
obligation of providing for environmentally safe disposal of used electronic components and
devices. Hence, we have been entered into a register kept by the Inspection for Environmental
Protection. The crossed-out bin symbol on a product means that the product may not be disposed
of to household waste containers. Recycling of waste helps to protect the environment. The user is
obliged to transfer their used equipment to a collection point where all electric and electronic
components will be recycled.

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2DEVICE DESCRIPTION
The EU-3910 SIGMA temperature regulator with a throttle is intended for controlling the burning process in a home air
fireplace. The regulator enables the user to control an additional device via a voltage-free contact.
Controller functions:
•Control of a throttle
•Control of a voltage-free contactor
•SIGMA algorithm
•Compatible with ST-505 or WiFi RS
•Control via a mobile app - eModul.eu
Controller equipment:
•2,8" colour display
•Built-in room temperature sensor
•Throttle
•C-mini wireless sensor
3HOW TO INSTALL THE CONTROLLER
The controller should be installed by a qualified person.
WARNING
Risk of fatal electric shock from touching live connections. Before working on the controller switch off the power
supply and prevent it from being accidentally switched on.
WARNING
Incorrect connection of wires may lead to controller damage.

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Connection diagram:
1. Voltage-free contact
2. Temperature sensor
3. Throttle
4. Control panel
5. Internet module
Pictorial diagram - controller operation:
1. Voltage-free contact
2. Temperature sensor
3. Throttle
4. Control panel

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4HOW TO USE THE CONTROLLER
1. Controller display
2. EXIT –in the controller menu the button is used to exit the menu or cancel the settings.
3. –in the main screen view it is used to decrease the pre-set temperature. In the controller menu it is used to
navigate through menu options and decrease the edited value.
4. –in the main screen view it is used to increase the pre-set temperature. In the menu it is used to navigate
through menu options and increase the edited value.
5. MENU –it is used to enter the menu and confirm the settings.
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5MAIN SCREEN DESCRIPTION
1. Controller operation mode (x –extinguished)
2. Opening degree of throttle
3. Current room temperature
4. Pre-set room temperature
6PRINCIPLE OF OPERATION –STAGES OF CONTROLLER OPERATION
The user starts the fire-up function by pressing a corresponding icon. The other modes start automatically, depending on the
stage of the controller operation.
6.1 FIRE-UP
This stage starts when the fire-up function is selected in the controller menu, and lasts until CH temperature reaches the pre-
set value, provided that the temperature does not drop below this value for a pre-set period of time (default setting: 5
minutes). If these conditions are met, the controller enters operation mode. If the controller fails to reach proper parameters
to enter operation mode within the pre-defined time, an icon indicating fire-up failure is displayed in the upper left corner of
the screen . In such a case, the fire-up process must be started again.
6.2 OPERATION
Once the fire-up process is completed, the controller enters operation mode. It is the primary mode of controller functioning
when the throttle operation is regulated with SIGMA algorithm, oscillating around the pre-set temperature defined by the
user. Instead of Fire-up function, Throttle ON/OFF appears in the user menu. The throttle may be disabled if necessary (e.g.
while adding fuel) - then the throttle closes completely.
6.3 SUPERVISION
This mode is activated automatically when the pre-set temperature is reached in operation mode. In such a case, the
controller closes the throttle completely to reduce the temperature.
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6.4 EXTINGUISHING
During blow-by stage, the throttle closes and opens at pre-defined intervals (Service menu). After blow-by stage, the
controller status switches to extinguished. The extinguishing process may also be activated by disabling the throttle in the
main menu.
7MAIN MENU
7.1 BLOCK DIAGRAM -MAIN MENU
Main menu
Fire up (Throttle on/off
Manual mode Voltage-free contact
Throttle
Settings
Use voltage-free contact
Temperature of contact deactivation
Pre-set room temperature
Throttle calibration
Language
Screen settings
Screen brightness
Blank screen brightness
Screen blanking time
Theme
Protection Auto-lock
PIN code
Factory settings
Fitter's menu
Internet module
Selecting temperature sensor
Sensor calibration
Software update
Sensor registration
List of sensors
Sensor removal
Semi-automatic mode
Software version
Service menu

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7.2 FIRE-UP (THROTTLE ON/OFF)
The aim of this function is to achieve optimum flame in the shortest time possible.The fire-up effectiveness is enhanced by
throttle operation. This stage lasts until room temperature reaches a pre-defined value required to enter the operation mode.
Once the controller enters operation mode, instead of Fire-up function, Throttle ON/OFF appears in the menu. The throttle
may be disabled if necessary (e.g. while adding fuel) - then the throttle closes completely. The extinguishing process may also
be initiated by disabling the throttle.
7.3 MANUAL MODE
The regulator offers manual mode function. In this function, the voltage-free contact may be activated and deactivated.
Additionally, the throttle position may be adjusted manually by changing the degree of opening (%). The throttle will start
changing its position about 2 seconds after the change has been introduced.
7.4 SETTINGS
1.1. USE VOLTAGE-FREE CONTACT
The controller has a voltage-free contact output, whose task is to open/close the contact when the room temperature
reaches the value set by the user.
A voltage-free contact can be used e.g. to switch on an external heating device or as a signal to fire up a pellet boiler.
NOTE
The voltage-free contact operation depends on the reading from the room temperature sensor.
1.2. TEMPERATURE OF CONTACT DEACTIVATION
It is the threshold temperature value at which the contact will be disabled. The contact operates continuously until it reaches
the deactivation temperature.
1.3. PRE-SET ROOM TEMPERATURE
When the current room temperature exceeds the pre-set temperature value, the throttle will start closing.
7.5 THROTTLE CALIBRATION
Throttle calibration is performed automatically every few hours to ensure its proper position. This function is used to activate
throttle calibration manually. Once this option is selected, the throttle moves slightly above its current position, reaches 0
position and moves back to its original position.
NOTE
Check regularly if the throttle is unobstructed. An obstructed throttle may have negative impact on combustion
process. Mechanical damage caused by dirt or foreign matter entering the air duct, which may lead to throttle
blocking, is not covered by warranty repair.

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7.6 LANGUAGE
This function enables the user to change the language version of the controller.
7.7 SCREEN SETTINGS
These parameters are used to adjust the screen layout.
•Screen brightness –This parameter is used to adjust screen brightness during operation.
•Blank screen brightness –This parameter is used to adjust screen brightness after some time (30 seconds) of
inactivity.
•Screen blanking time –This parameter is used to define the time after which the screen goes blank.
•Theme –This submenu enables the user to choose the display colour.
7.8 PROTECTIONS
This function enables the user to set up menu access protection. Once Auto-lock function is selected, access to the menu is
possible only after entering a 4 digit PIN code - 0000. The PIN code may be changed by the user in the PIN code submenu.
7.9 FACTORY SETTINGS
This option enables the user to restore factory settings.
7.10 FITTER’S MENU
Fitter’s menu is described in detail in section VIII.
7.11 SERVICE MENU
This submenu includes advanced controller settings. These functions should be configured by a qualified fitter and the
submenu is secured with a 4-digit code.

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8FITTER’S MENU
8.1 INTERNET MODULE
Internet module is a device enabling the user remote control of the heating system. The user can control the status of all
system devices on the screen of a home computer, tablet or mobile phone. In addition to the possibility of viewing the
temperature of each sensor, the user has the option of changing the temperature values.
After switching the module on and selecting DHCP option, the controller automatically downloads such parameters as IP
address, IP mask, gateway address and DNS address from the local network. If any problems arise when downloading the
network parameters, they may be set manually. The procedure of obtaining these parameters is described in detail in the
instruction manual of the Internet Module.
NOTE
This type of control is possible after buying and connecting an additional control module ST-505 or WiFi RS, which is
not included in the standard controller set.
8.2 SELECTING TEMPERATURE SENSOR
•Executive module temperature - the controller reads the temperature from the sensor connected to the module
via a terminal block.
•Display temperature –the controller reads the temperature from the sensor built into the display. This function is
useful when the screen is placed far from the fireplace.
•Wireless sensor –the controller reads the temperature from a wireless sensor.
NOTE
If several sensors are connected to the device, the controller will read the average temperature from them.
8.3 SENSOR CALIBRATION
Sensor correction should be performed during installation or after a longer period of using the regulator when the
temperature measured by the sensor is different from actual temperature. Range of regulation is -10ºC to +10 ºC with the
accuracy of 0,1ºC.
The user can calibrate the module sensor, the display sensor and the registered radio sensors.
8.4 SOFTWARE UPDATE
To upload new software, disconnect the controller from the power supply. Insert the USB flash drive with the new software
into the USB port. Then connect the controller to the power supply. A single sound signal means that the upload of new
software has started.
NOTE
The process of uploading new software to the controller may only be carried out by a qualified fitter. After the
software has been changed, it is not possible to restore the previous settings.

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8.5 SENSOR REGISTRATION
The function allows the user to register an additional sensor. To register, select this function and press the registration
(communication) button on the sensor.
NOTE
Up to 8 additional sensors can be registered to the controller.
8.6 LIST OF SENSORS
By selecting this function, the user can view the registered sensors.
8.7 SENSOR REMOVAL
This option enables the user to remove a registered sensor.
8.8 SEMI-AUTOMATIC MODE
After the pre-set temperature has been reached, the semi-automatic mode allows the user to sustain the heating process by
moving the throttle from 0 to 40% until the temperature drops to the pre-set temperature reduced by hysteresis. Then the
fireplace will switch back to operation mode.
8.9 SOFTWARE VERSION
Activate this function and the manufacturer's logo will appear on the display along with the controller software version.
NOTE
The controller software version number is necessary when contacting TECH service staff.
9CONTROLLING THE SYSTEM VIA EMODUL APP
The Internet module is a device which allows remote control of the heating system via the Internet. Using the emodul.eu
website, the user controls the status of the system devices and other parameters, e.g. temperature of sensors on the screen
of a computer, tablet or smartphone. By taping on the parameters, it is possible to change their operating settings.
Before registering the module, it is necessary to create user’s account on emodul.pl (if you do not have one).

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Once the module has been connected properly, select Module ON.
Next, select Registration. The controller will generate a code.
Log on emodul.pl, go to Settings tab and enter the code which appeared on the controller screen.
It is possible to assign a name or description to the module as well as provide phone number and e-mail address
to which the notifications will be sent.
Once generated, the code should be entered within 60 minutes. Otherwise, it will become invalid and it will be
necessary to generate a new one.
Internet module parameters such as IP address, IP mask, gate address etc. may be set manually or by selecting
DHCP option.

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10 TECHNICAL DATA
* AC1 load category: single-phase, resistive or slightly inductive AC load.
** DC1 load category: direct current, resistive or slightly inductive load.
C-mini sensor
11 PROTECTIONS AND ALARMS
In the event of an alarm, an sound signal is activated and an appropriate message appears on the display.
Specification
Value
Power supply
230V ± 10% / 50Hz
Maximum power consumption
6W
Potential-free cont. nom. out. load
230V AC / 0,5A (AC1) *
24V DC / 0,5A (DC1) **
Ambient temperature
5°C ÷ 50°C
Thermal resistance of NTC sensor
-30°C ÷ 50°C
Fuse
3,15 A
Specification
Value
Power supply
CR2032 battery
Range of temperature measurement
-30˚C ÷ 50˚C
Accuracy of measurement
± 0,5˚C
Frequency
868MHz
Alarm
Possible cause
How to fix it
Temperature sensor error
The internal sensor in the controller is
damaged.
Call the service
Throttle error
- Wiring is damaged.
- The blade movement has been
blocked.
- Check the condition of wires
- Remove the foreign matter form the
throttle
Fire-up failure
The pre-set room temperature has not
been reached in the pre-defined time.
Activate the fire-up function again.

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EU DECLARATION OF CONFORMITY
Hereby, we declare under our sole responsibility that EU-3910 SIGMA
manufactured by TECH, head-quartered in Wieprz Biała Droga 31, 34-122 Wieprz, is
compliant with Directive 2014/35/EU of the European Parliament and of the Council
of 26 February 2014 on the harmonisation of the laws of Member States relating to
the making available on the market of electrical equipment designed for use within
certain voltage limits (EU OJ L 96, of 29.03.2014, p. 357), Directive 2014/30/EU of the
European Parliament and of the Council of 26 February 2014 on the harmonisation of
the laws of Member States relating to electromagnetic compatibility (EU OJ L 96 of
29.03.2014, p.79), Directive 2009/125/EC establishing a framework for the setting of
ecodesign requirements for energy-related products as well as the regulation by the
MINISTRY OF ENTREPRENEURSHIP AND TECHNOLOGY of 24 June 2019 amending the
regulation concerning the essential requirements as regards the restriction of the use
of certain hazardous substances in electrical and electronic equipment, implementing
provisions of Directive (EU) 2017/2102 of the European Parliament and of the Council
of 15 November 2017 amending Directive 2011/65/EU on the restriction of the use of
certain hazardous substances in electrical and electronic equipment (OJ L 305,
21.11.2017, p. 8).
For compliance assessment, harmonized standards were used:
PN-EN IEC 60730-2-9:2019-06, PN-EN 60730-1:2016-10.
Wieprz, 19.01.2022

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