TECH CONTROLLERS EU-i-3 Central Heating Systems User Manual

EU-i-3 Central Heating Systems

EU-i-3
1

TABLE OF CONTENTS
I. Safety…………………………………………………………………………………………………………………………………………………….. 5 II. Device description …………………………………………………………………………………………………………………………………… 6 III. How to install …………………………………………………………………………………………………………………………………………. 8 IV. Main screen description…………………………………………………………………………………………………………………………. 11
1. Installation screen ……………………………………………………………………………………………………………………………….. 11 2. Parameter and panel screen …………………………………………………………………………………………………………………. 11 V. Quick setup of the controller ………………………………………………………………………………………………………………….. 12
Part I. How to configure built-in valves, additional valves and room regulators
I. How to configure built-in valve ……………………………………………………………………………………………………………….. 13 II. Weather-based control ………………………………………………………………………………………………………………………….. 17 III. Mixing valve settings …………………………………………………………………………………………………………………………….. 18 IV. Quick setup of the mixing valve ………………………………………………………………………………………………………………. 21 V. Additional valves …………………………………………………………………………………………………………………………………… 22
Part II. Controller operation modes
I. Water tank priority………………………………………………………………………………………………………………………………… 23 II. Parallel pumps………………………………………………………………………………………………………………………………………. 23 III. House heating ………………………………………………………………………………………………………………………………………. 23 IV. Summer mode………………………………………………………………………………………………………………………………………. 23 V. Automatic summer mode ………………………………………………………………………………………………………………………. 24
Part III. DHW pump and Anti-legionella
I. How to configure DHW pump operation ………………………………………………………………………………………………….. 24 II. Anti-legionella ………………………………………………………………………………………………………………………………………. 25 III. Pump ANTI-STOP …………………………………………………………………………………………………………………………………… 26
Part IV. Manual mode
I. Manual mode ……………………………………………………………………………………………………………………………………….. 27 Part V. Additional contacts
I. Voltage contacts and voltage-free contacts………………………………………………………………………………………………. 28 II. How to configure a contact …………………………………………………………………………………………………………………….. 29 III. Voltage and voltage-free contact algorithms…………………………………………………………………………………………….. 30
1. Circulating pump …………………………………………………………………………………………………………………………………. 30 2. Buffer pump ……………………………………………………………………………………………………………………………………….. 30 3. CH pump …………………………………………………………………………………………………………………………………………….. 31 4. Additional heat source …………………………………………………………………………………………………………………………. 32 5. Buffer…………………………………………………………………………………………………………………………………………………. 33 6. DHW buffer ………………………………………………………………………………………………………………………………………… 33
2

7. Heating need ………………………………………………………………………………………………………………………………………. 34 8. Operation control ………………………………………………………………………………………………………………………………… 35 9. DHW ………………………………………………………………………………………………………………………………………………….. 36 10. Controlling the room regulator………………………………………………………………………………………………………….. 36 11. Relays …………………………………………………………………………………………………………………………………………….. 37 12. Weekly control ………………………………………………………………………………………………………………………………… 37 13. Manual mode………………………………………………………………………………………………………………………………….. 39 14. OFF ………………………………………………………………………………………………………………………………………………… 39
Part VI. Cascade I. Cascade ……………………………………………………………………………………………………………………………………………….. 39
1. Select operation algorithm……………………………………………………………………………………………………………………. 39 2. Operation mode ………………………………………………………………………………………………………………………………….. 40 3. Additional contacts………………………………………………………………………………………………………………………………. 40 4. Select sensor ………………………………………………………………………………………………………………………………………. 40 5. Main boiler …………………………………………………………………………………………………………………………………………. 40 6. Reset motohours …………………………………………………………………………………………………………………………………. 40 7. Factory settings …………………………………………………………………………………………………………………………………… 40
Part VII. Ethernet module I. Ethernet module …………………………………………………………………………………………………………………………………… 41
Part VIII. Solar collector I. Solar collector……………………………………………………………………………………………………………………………………….. 42
1. Solar collector……………………………………………………………………………………………………………………………………… 42 2. Accumulation tank ………………………………………………………………………………………………………………………………. 43 3. Pump settings ……………………………………………………………………………………………………………………………………… 44 4. Additional contact ……………………………………………………………………………………………………………………………….. 44 5. additional contact 2……………………………………………………………………………………………………………………………… 44
Part IX. Cooling 1. Cooling……………………………………………………………………………………………………………………………………………….. 45 2. Condition of activation …………………………………………………………………………………………………………………………. 46 3. Additional contact ……………………………………………………………………………………………………………………………….. 46 4. Heating circuit …………………………………………………………………………………………………………………………………….. 46
Part X. Sensor settings I. Sensor settings ……………………………………………………………………………………………………………………………………… 47
Part XI. Factory settings I. Factory settings …………………………………………………………………………………………………………………………………….. 47
3

Part XII. Settings I. Settings………………………………………………………………………………………………………………………………………………… 48
1. Language selection ………………………………………………………………………………………………………………………………. 48 2. Time settings ………………………………………………………………………………………………………………………………………. 48 3. Screen settings ……………………………………………………………………………………………………………………………………. 48 4. Alarm sounds………………………………………………………………………………………………………………………………………. 48 5. Notifications ……………………………………………………………………………………………………………………………………….. 48 6. Lock …………………………………………………………………………………………………………………………………………………… 48 7. Software version …………………………………………………………………………………………………………………………………. 49
Part XIII. Weekly control I. Weekly control ……………………………………………………………………………………………………………………………………… 49 Technical data…………………………………………………………………………………………………………………………………………………. 51 Protections and alarms…………………………………………………………………………………………………………………………………….. 52 Software update ……………………………………………………………………………………………………………………………………………… 53 Used sensors…………………………………………………………………………………………………………………………………………………… 53
4

I. SAFETY
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 personal injuries or controller damage. The user’s manual should be stored in a safe place for further reference. 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 sold or put in a different place, make sure that the user’s manual is there 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 · High voltage! 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. · Before starting the controller, the user should measure earthing resistance of the electric motors as well as the insulation resistance of the cables. · The regulator should not be operated by children. · The device may be damaged if struck by a lightning. Make sure the plug is disconnected from the power supply during storm. · 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 merchandise described in the manual may have been introduced subsequent to its completion on July 18th, 2022. The manufacturer retains the right to introduce changes to the structure. The illustrations may include additional equipment. Print technology may result in differences in colours shown.
Care for the natural environment is our priority. Being aware of the fact that we manufacture electronic devices obligates us to dispose of used elements and electronic equipment in a manner which is safe for nature. As a result, the company has received a registry number assigned by the Main Inspector of Environmental Protection. The symbol of a crossed out rubbish bin on a product means that the product must not be thrown out to ordinary waste bins. By segregating waste intended for recycling, we help protect the natural environment. It is the user’s responsibility to transfer waste electrical and electronic equipment to the selected collection point for recycling of waste generated from electronic and electrical equipment.
5

II. DEVICE DESCRIPTION
EU-i-3 controller is a multi-function device intended for controlling central heating systems. The principle of operation involves mixing the hot supply water with the water returning from the heating circuit in order to reach the desired temperature and maintain it on the same level all the time. The pump connected to every valve circuit helps to distribute water through the heating system. The pump should be installed downstream of the mixing valve and the temperature sensor should be installed downstream of both the pump and the valve to ensure precise water control at the valve output.
Thanks to advanced software, the controller offers a wide range of functions:
· Smooth control of three mixing valves · Control of DHW pump · Protection against too high temperature of CH boiler water as well as too low temperature of water returning to
CH boiler · Weather-based control · Weekly control · Two configurable no- voltage outputs · Two configurable voltage outputs · Supporting three room regulators with traditional communication (two-state) · Possibility of connecting 3 dedicated room regulators with RS communication · Supporting a room regulator with RS communication · Possibility of connecting ST-505 Ethernet module, ST-525 or WiFi RS which enable the user to control certain
functions and view some of the parameters via the Internet · Possibility of connecting two additional modules controlling the valves (e.g. i-1, i-1m) ­ it enables the user to
control two additional valves · Possibility of controlling solar panels · Possibility of controlling CH boiler cascade
6

1

2

3

10

9

8

7

6

5

4

1. WiFi RS 2. ST-505 Internet module 3. ST-525 Internet module 4. ST-294v1 Room regulator 5. ST-280 Room regulator 6. ST-292 Room regulator 7. Dedicated room regulator RI-1 8. Dedicated room regulator RI-2 9. i-1m valve module 10. i-1 valve module

7

III. HOW TO INSTALL
EU-i-3 controller should be installed by a qualified person. It may be installed as a free-standing device or as a panel mountable on a wall.
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. Remove the controller cover to connect the wires.
Bolts fastening the controller cover
8

Left terminal strip

USB

Additional connector

RS Input

Earth bar

Right terminal strip

9

Connectors, symbols and example use 10

IV. MAIN SCREEN DESCRIPTION
The device is controlled using the touch screen. 1. INSTALLATION SCREEN

3

4

5

6

2 1
19 18 17 16
15

7
8 9 10

11

14 13

12

1. Pre-set room temperature 2. Current room temperature 3. Day of the week and time 4. Wi-Fi signal strength 5. Notification icon 6. Enter controller menu 7. External temperature 8. Current operation mode 9. Solar collector temperature 10. Pre-set and current DHW temperature 11. Accumulation tank temperature

12. Level of valve opening [%] 13. Scroll arrow 14. Return temperature 15. Active additional contact (N1, N2 – voltage
contacts; B1, B2 – voltage-free contacts) 16. Temperature reading from CH sensor 17. Pre-set and current temperature of the
heating circuit 18. Circuit switched off 19. Active cooling mode in each circuit

2. PARAMETER AND PANEL SCREEN
· Parameter screen ­ a record including the status of all active inputs and outputs · Panel screen ­ parameters of particular active circuits and algorithms. Tap on a panel to start editing
its parameters.

11

V. QUICK SETUP OF THE CONTROLLER
12

Menu Fitter’s menu

Number of valves Valve 1
Additional contacts TECH RS regulator
Cascade Ethernet module
Solar collector Cooling
Sensor settings Factory settings
PART I
How to configure built-in valves, additional valves and room regulators I. HOW TO CONFIGURE BUILT-IN VALVE
Only pump* Type of valve Opening time
CH sensor Pump activation Room regulator Weather-based control Mixing valve settings Floor circuit settings** Factory settings
13

Valve menu

• select in case of circuit operation without a mixing valve ** this option appears when the floor valve type has been selected

1. Enter the fitter’s menu 2. Select the number of valves needed 3. Configure one of then selecting `Valve 1′ option 4. Select the type of valve: CH valve, Floor valve, Return protection, Swimming pool, Ventilation. The
principle of operation in the case of Swimming pool and Ventilation valves is the same as in the case of CH valve. What changes is the graphics on the installation screen.
· CO ­ select if you want to control the temperature of the CH circuit with the use of a valve sensor. The valve sensor should be installed downstream of the mixing valve in the supply pipe.
· FLOOR ­ select if you want to control the temperature of the underfloor heating circuit. It protects the underfloor heating system against dangerous temperature. If the user selects CH as the valve type and connects it to the underfloor heating system, the fragile floor installation may be damaged.
· RETURN PROTECTION ­ select if you want to control the return temperature of the heating system with the use of a return sensor. With this type of valve, only the return sensor and the CH boiler sensor are active; the valve sensor is not connected to the controller. In this configuration, the valve protects the CH boiler return against low temperature, and if the CH boiler protection function is selected, it also protects the CH boiler against overheating. If the valve is closed (0% opening), the water flows only through the short circuit, while full valve opening (100%) means that the short circuit is closed and water flows through the entire heating system.
WARNING
If CH boiler protection is disabled, the CH temperature does not influence the valve opening. In extreme cases, CH boiler overheating is possible; therefore, it is recommended to configure CH boiler protection settings.

Floor type

Floor circuit settings

Floor heating – summer
Decide if the valve should work in summer mode.

Max, floor temperature
The temperature above which the valve will close and the circulating pump will be disabled.

WARNING If the selected valve type is different from the valve used in the system, it may lead to the whole heating system damage.
NOTE The controller may support 3 built-in valves and two additional valves.
14

5. Set the opening time Opening time is the parameter defining the time needed for the valve actuator to open the valve from 0% to 100%. CH opening time should be the same as the value given on the rating plate of the valve actuator.
Actuator opening time
6. Select CH sensor The selected sensor will serve as CH sensor. The reading from the selected sensor determines the valve pump activation when the function of pump activation above threshold is active.

EU-i-3

NOTE
If the CH sensor has not been connected and `Boiler protection’ function is enabled, the controller will inform the user about the lack of sensor through an alarm.

7. Enable the pump

Connecting CH sensor

Operation modes:

· Always OFF – the pump is disabled permanently and the device controls only the valve. · Always ON – the pump operates all the time regardless of the temperature of the heat source and the
valve. · ON above threshold – the pump is enabled above the pre-set activation temperature. The setting range:
10°C – 55 °C. · Closing below temperature threshold – the valve will close when the temperature drops below the
value defined in the parameter ON above threshold. As a result, the circuit valve will be disabled.

8. Select one of the regulators in `Room regulator’ (optional). Once the option has been selected, define the type of regulator : standard regulator, TECH RS regulator).

15

Room regulator

OFF

Standard regulator

Tech RS regulator

Room controller

function

Standard regulator 1-3

Tech regulator Algorithm

Standard regulator

Select dedicated regulator

Room temperature difference

Room temperature difference

ST-280 regulator

Dedicated regulator 1-3

· Standard regulator ­ a two-state regulator operating on an open/closed basis. It offers the following functions: closing, room regulator temperature lower, pump deactivation.
· Tech regulator Algorithm ( Tech RS regulator ) – controlling the pre-set valve temperature on the basis of two parameters: Room temperature difference’ andChange of pre-set valve temperature’. The pre-set valve temperature is raised or lowered depending on the room temperature. Additionally, it is possible to activate the room regulator functions: Pump deactivation and Closing.
Example:
Room temperature difference 1°C Change of pre-set valve temperature 2°C When the room temperature increases by 1°C, the valve pre-set temperature changes by 2°C.
· Standard regulator (Tech RS regulator) ­ a type of RS regulator operating on the basis of the parameters defined in the room regulator functions: closing, room regulator temperature lower and pump deactivation.
· Select dedicated regulator (Tech RS regulator) – Pre-set valve temperature control is performed via room regulators dedicated to the EU-i-3 controller. The user may register up to 4 dedicated regulators: the ST-280 regulator or Dedicated regulators 1-3.
· How to register dedicated regulators: In order to register a dedicated regulator, go to the MenuFitter’s menuValve (1,2 or 3)Room reg.Tech RS reg.Select dedicated reg. Dedicated reg. (1,2 or 3). Tap on Dedicated regulator’ (1,2 or 3) to start the registration process of the dedicated regulator. Confirm registration by selecting OK. Next, start the registration process in the regulator. After successful registration, go back toTech RS regulator’ in order to select the

16

regulator function: Standard regulator’ orTech regulator Algorithm’ (this step is necessary to ensure proper operation of the regulator). Follow the same steps while registering another regulator.
NOTE
It is possible to register up to 3 dedicated regulators to the controller. A dedicated regulator does not cooperate with additional modules I-1 ( it only supports built-in valves).
· Room regulator functions:
1. Closing – when the room regulator reports that the room temperature is too low, the valve starts closing (to reach the minimum valve opening). 2 Room regulator temperature lower – when the regulator reports that the pre-set room temperature has been reached, the pre-set valve temperature will change by the value of `Room reg. temp. lower’ parameter (pre-set temperature – pre-set reduction temperature). 3. Pump deactivation – when the room regulator reports that the pre-set room temperature has been reached, the circuit pump will be disabled.
EU-i-3

II. WEATHER-BASED CONTROL

Example connection of a two-state regulator

For the function of weather control to be active, the external sensor mustn’t be exposed to sunlight or influenced by the weather conditions. After it has been installed in an appropriate place, function needs to be activated in the controller menu.
For the valve to operate correctly, the user defines the pre-set temperature (downstream of the valve) for 4 intermediate external temperatures: -20ºC, -10ºC, 0ºC and 10ºC.
In order to configure the pre-set temperature value, touch and drag appropriate points up or down (the pre-set valve temperature will be displayed on the left), or use arrows to select the temperature value. Subsequently, the display will show the heating curve.

17

NOTE
This function requires the use of external sensor.

NOTE
Once this option has been activated, it is possible to change the preset valve temperature only by selecting the range on the heating curve.

EU-i-3
Connecting the external sensor
NOTE When return protection valve type has been selected, the weather-based control function does not work. The cooling mode has its own heating curve for the weather-based control function: Cooling Heating circuit Circuit 1-3 Heating curve.
NOTE Further settings of the external sensor are available in Sensor settings.
III. MIXING VALVE SETTINGS
· Temperature control – This parameter determines the frequency of water temperature measurement (control) behind the CH valve. If the sensor indicates a change in temperature (deviation from the pre-set value), then the valve actuator will open or close by the set stroke, in order to return to the pre- set temperature.
· Opening direction – If, after connecting the valve to the controller, it turns out that it is connected the other way round, then the power supply cables do not have to be switched. Instead, it is enough to change the opening direction in this parameter: LEFT or RIGHT. This function is available only for built-in valves.
· Minimum opening – The parameter determines the smallest valve opening. Thanks to this parameter, the valve may be opened minimally, to maintain the smallest flow. If you set it at 0°, the valve pump will be disabled.
18

· Hysteresis ­ the hysteresis between the pre-set temperature and current valve temperature.
· Single stroke – This is a maximum single stroke (opening or closing) that the valve may make during one temperature sampling. If the temperature is near the pre-set value, the stroke is calculated on the basis of <proportionality coefficient> parameter value. The smaller the single stroke, the more precisely the set temperature can be achieved. However, it takes longer for the set temperature to be reached.
· Proportionality coefficient – Proportionality coefficient is used for defining valve stroke. The closer to the preset temperature, the smaller the stroke. If the coefficient value is high, the valve takes less time to open but at the same time the opening degree is less accurate. The following formula is used to calculate the percent of a single opening:
(PRE-SET_TEMP – SENSOR_TEMP) * (PROP_COEFF /10)
· Sensor calibration – this function enables the user to calibrate the built- in valve at any time. During this process the valve is restored to its safe position ­ in the case of CH valve it is fully opened whereas in the case of floor valve it is closed.
· Opening in CH calibration ­ this function enables the user to change the direction of valve opening/closing during calibration.
· Weekly control – this function is described in section XIII.
· Valve deactivation – once this has been selected, valve operation depends on weekly control settings and external temperature.
Weekly control – once this function has been selected, the user may activate/deactivate weekly operation schedule and define the time when the valve will be closed.
External temperature – the user may set nighttime and daytime temperature at which the valve will be deactivated. It is also possible to program hours when the controller will operate in day or night mode. The user sets the hysteresis of valve deactivation temperature.
NOTE
The function of Valve deactivation based on outside temperature does not work in cooling mode. The Return protection type does not offer Valve deactivation function.
· Protections
Return protection – this function is used to set CH boiler protection against too cool water returning from the main circuit, which could cause low- temperature boiler corrosion. The return protection involves closing the valve when the temperature is too low, until the short circulation of the boiler reaches appropriate temperature. The user may set the temperature threshold below which the return protection will be activated.
NOTE
To ensure the effectiveness of this protection, it is necessary to activate the valve in the heating circuit menu and connect the return sensor.
19

CH boiler protection – this function serves to prevent hazardous growth of CH boiler temperature. The user sets the maximum acceptable CH boiler temperature. In case of hazardous growth in the temperature, the valve begins to open in order to cool the CH boiler down. This function is disabled by default.
NOTE This option is unavailable for floor valves.
20

IV. QUICK SETUP OF THE MIXING VALVE
NUMBER OF VALVES Select the number of valves
needed.
VALVE 1 Select a valve and move on
to configure it.
VALVE TYPE Select appropriate type of
valve.
OPENING TIME Copy the time from the actuator rating plate.
SELECT CH SENSOR Select appropriate sensor.
PUMP ACTIVATION Define the time of pump
operation.
ROOM REGULATOR If you have a two-state
regulator.
HEATING CIRCUIT Enable the circuit assigned
to the valve.
If you have more valves, follow the same steps.
21

V. ADDITIONAL VALVES
Registration: 1. Connect additional valve to the main controller using RS cable 2. Fitter’s menu -> select the number of additional valves 3. Find the additional valve, go to registration and enter the code from the additional module.
OT OT
EU-i-3
Example connection between additional valve and EU-i-3 main controller

NOTE
An exclamation mark next to the circuit icon means that the circuit is disabled or the additional valve has not been registered.

NOTE
Registration code consists of 5 digits and can be found on the rating plate on the back of i-1m. In the case of i-1 valve controller, the code can be found in software version submenu.

22

PART II Controller operation modes

Menu

Heating circuit Operation mode

I. WATER TANK PRIORITY
In this mode, water tank pump (DHW) is activated first in order to heat domestic water. Mixing valves are activated once the pre-set DHW temperature has been reached. The valves operate continuously until the water tank temperature drops below the pre-set value by the pre-defined hysteresis.

NOTE The valves close to 0% opening.

NOTE
When the CH boiler protection is activated, the valves will open even if the water tank temperature is too low.

NOTE
Return protection opens the valve to 5% if the water tank temperature is too low.

II. PARALLEL PUMPS
In this mode, all pumps and valves operate simultaneously. The valves maintain the pre-set temperature and the water tank is heated to the pre-set temperature.
III. HOUSE HEATING
In this mode, only the house circuit is heated and the main task of the controller is to maintain the pre-set valve temperature.

NOTE
DHW pump scheme will be displayed although the house heating mode is active.
To delete the pump image from the scheme, it is necessary to deactivate it in `Operation modes’ of DHW pump.

NOTE
To avoid an alarm being activated when the DHW sensor is not connected, disable the DHW pump in `Operation modes’ of DHW pump.

IV. SUMMER MODE
In this mode, the CH valves are closed to prevent unnecessary house heating. If the CH boiler temperature is too high, the valve will be opened as an emergency procedure ( it requires activating `CH boiler protection’ function).

23

V. AUTOMATIC SUMMER MODE

This option involves automatic switching between modes. When the external temperature exceeds the activation threshold of Summer automatic mode, the valves will close. When the external sensor detects that a given threshold has been exceeded, the controller switches to summer mode. Average temperature is calculated on an ongoing basis. When it is lower than the pre-set value, the operation mode will switch to the previous one.

· Summer mode temperature threshold ­ this option enables the user to set the outside temperature value above which summer mode will be enabled.
· Averaging time ­ the user defines the period of time which will be used to calculate the average outside temperature.

NOTE

U NOTE

NOTE

This function requires the external sensor to be active.

When the temperature drops below the threshold, the controller will switch to the previous mode.

When the connection is configured for the first time and the controller fails to switch the mode, it is necessary to reset it. It results from averaging time (Fitter’s menu > sensor settings).

PART III DHW pump and Anti-legionella

Menu

Heating mode DHW pump

I. HOW TO CONFIGURE DHW PUMP OPERATION
· Operation mode Operation mode

Automatic mode
DHW pump work according to the settings: pre-set temperature, hysteresis, activation delta, activation temperature, maximum CH temperature and weekly control.

OFF
When DHW is disabled, DHW image disappears from the main screen.

Heating
The pump operates until DHW reaches the pre-set temperature. In this mode the source temperature and maximum CH temperature are not taken into account.

24

EU-i-3
Connecting DHW sensor · Pre-set DHW temperature – This option is used to define the pre-set temperature of domestic hot water. Once
the temperature is reached, the pump is disabled.
· DHW hysteresis – the temperature difference between device activation and its deactivation (e.g. when the preset temperature is set at 60ºC and the hysteresis value is 3ºC, the device will be disabled when the temperature reaches 60ºC and it will be activated again when the temperature drops to 57ºC).
· Activation delta ­ this function is displayed only in automatic operation mode. It is the minimum difference between DHW temperature and CH temperature which is necessary for the pump is enabled. For example, if activation delta is 2°C, CH pump will be enabled when the source temperature will exceed current DHW tank temperature by 2°C provided that the activation threshold has been reached.
· DHW pump activation temperature – this parameter defines the CH temperature which must be reached to enable the pump.
· Maximum CH temperature – this parameter defines the temperature above which the pump will be enabled to transfer the excess of hot water to water tank.
· Weekly control – this function is described in section XIII. · Source sensor – this function enables the user to choose the source sensor which will provide temperature data.
II. ANTI-LEGIONELLA
Thermal disinfection involves increasing the temperature to the required disinfection temperature in the tank – reading from the upper sensor of the tank. Its aim is to eliminate Legionella pneumophila, which reduces the cellular immunity of the body. The bacteria often multiply in hot water reservoirs. After activating this function, the water tank is heated up to a certain temperature (Heating circuit> DHW pump> Anti-legionella> Pre-set temperature) and the temperature is maintained for a specified disinfection time (Heating circuit> DHW pump> Anti-legionella> Operation time). Next, standard operation mode is restored.
25

From the moment the disinfection is activated, the disinfection temperature must be reached within the time set by the user (Heating circuit> DHW pump> Anti-legionella> Max. time of disinfection heating). Otherwise, this function will be deactivated automatically.
Using function, the user can define the day of the week when thermal disinfection will be carried out.
· Operation ­ manual activation of the disinfection procedure, which is based on Operation time’ andMax. time of disinfection heating’.
· Automatic operation ­ activation of the disinfection procedure based on weekly schedule.
· Pre-set temperature ­ the temperature maintained throughout disinfection process.
· Operation time ­ this function is used to set the duration time of disinfection (in minutes) throughout which the temperature will be maintained at a pre-set level.
· Max. time of disinfection heating ­ it is the maximum time of thermal disinfection process (LEGIONELLA function) from the moment of its activation (regardless of the temperature at that time). If the water tank fails to reach or maintain the pre-set disinfection temperature throughout the whole disinfection period, the controller returns to basic operation mode after the time defined in this parameter.

III. PUMP ANTI-STOP

Menu

Heating mode Pump anti-stop

When this function is active, the valve pump is enabled every 10 days for 5 minutes. It forces pump operation and prevents scale deposit outside the heating season when the pump inactivity periods are long.

26

PART IV
Manual mode
I. MANUAL MODE
This function enables the user to check if every device works properly by switching on each device separately: DHW pump, additional contacts and valves. In the case of valves, it is possible to initiate opening and closing as well as check if the pump of a given valve works properly.

Manual mode

Valve 1
Valve 2 Valve 3 DHW pump Voltage contact 1,2 Voltage-free contact 1,2 Additional valve 1-2

Valve pump Valve opening Valve closing
Stop The same submenu as for Valve 1 The same submenu as for Valve 1
The same submenu as for Valve 1

NOTE Additional valves appear in manual mode only after they have been registered.
Draw your heating system scheme including all active valves and devices connected to additional contacts. It will help you to configure your heating system.

27

Blank space for your scheme:

PART V Additional contacts
I. VOLTAGE CONTACTS AND VOLTAGE-FREE CONTACTS
An example connection scheme involves contact 1. In reality it may be any other contact.

NOTE
Voltage contacts 1, 2 are intended for connecting devices powered by 230V.

NOTE
Voltage-free contacts 1,2 operate on `open/close’ basis.

28

II. HOW TO CONFIGURE A CONTACT
In each algorithm the user may configure the following parameters: · Activity ­ operation in summer mode, in the remaining modes or in both cases. · Status during alarm ­ this function enables the user to decide if the device connected to this additional contact should be switched on (operating according to the selected algorithm) or switched off during an alarm. NOTE This section includes pictorial diagrams of system connections. They cannot replace CH installation project. Their main aim is to present how the controller system may be expanded.
29

III. VOLTAGE AND VOLTAGE-FREE CONTACT ALGORITHMS
1. CIRCULATING PUMP This algorithm is intended for controlling the operation of e.g. a circulating pump. The user may select the operation mode and adjust the pre-set temperature as well as the operation time and pause time of the contact. Once the algorithm has been selected, the installation screen shows a graphic representation of the circuit.
An example connection and control of the circulating pump Operation modes:
1. Weekly control ­ select the days and time periods when the circulating pump connected to the contact will be active. During these periods the contact will operate according to the following parameters: operation time, pause time and pre-set temperature.
2. Automatic operation ­ the contact operation is based on operation time and operation pause parameters. 2. BUFFER PUMP This algorithm is intended for controlling the operation of e.g. buffer pump according to temperature readings from two sensors: the source sensor and the buffer sensor. Condition for activation: The device connected to the contact will be enabled when the temperature read by the source sensor is higher than the temperature read by the buffer sensor by the value of activation delta. The device will be disabled if the activation condition has been met and the buffer sensor temperature increases by the hysteresis value.
· Activation delta ­ the user may define the difference between the source temperature and the buffer temperature.
· Activation threshold ­ the user may define the threshold temperature for the device activation (read by the source sensor).
· Hysteresis – the user may define the value at which the contact will be disabled (if the activation condition has been met).
· Buffer sensor ­ the user may select the sensor. · Source sensor ­ the user may select the sensor.
30

Example:

Activation delta: 10°C

Hysteresis: 2°C

Source temperature: 70°C

The device connected to the contact will be enabled when the buffer temperature drops below 60°C (source temp. delta). It will be disabled when the temperature increases to 62°C (Source temp. – delta) + hysteresis.

3. CH PUMP
This algorithm is intended for controlling the operation of e.g. CH pump according to the readings from one temperature sensor. The device connected to the contact will be enabled when the activation threshold temperature has been reached. It will be disabled when the temperature drops (including hysteresis).
· Range (additional settings) ­ select this option to create a temperature range within which the CH pump will operate.
· Activation threshold ­ select this option to set the temperature value above which the contact will be enabled. · Deactivation threshold (additional settings) ­ this option appears after the RANGE function has been selected.
The user may set the temperature value above which the contact will be disabled, taking into account stable overheating value (deactivation threshold

• stable overheating value 3°). · Hysteresis ­ the user may set the temperature value below which the contact will be disabled (Activation Threshold-Hysteresis). · Heating need (additional settings) ­ it is a pre-set value which will be taken into account when you select the contact with the CH pump operating in Heating need algorithm. This function appears after the RANGE function has been selected. · External temperature (additional settings) ­ the contact operates according to external temperature value (if an external temperature sensor is used). The user may set a threshold external temperature at which the contact will be disabled. It will be enabled when the external temperature drops below the threshold and when the activation threshold has been reached. · Sensor ­ the user may select the heat source sensor. · Room regulator ­ the user may configure the influence of the room regulators on the contact operation. If this option has been selected, the device connected to the contact will be enabled if the activation threshold has been reached and if any of the selected regulators reports too low temperature (heating need). The device will be disabled when all selected regulators report that the room temperature has been reached.
  31

4. ADDITIONAL HEAT SOURCE The algorithm is based on the readings from one temperature sensor. The device connected to the contact will be enabled when the temperature measured by the sensor drops. It will be disabled when the temperature increases by the pre-set overheating value.
· Activation threshold ­ the user may set the temperature value below which the contact will be enabled. · Overheating (additional settings) – the user may set the temperature value above which the contact will be
disabled, taking into account activation threshold (Activation threshold + Overheating threshold). · Sensor ­ the user may select the heat source sensor which will provide data for contact activation/deactivation. · Room regulator ­ the user may configure the influence of the room regulators and DHW on the contact
operation. If this option has been selected, the device connected to the contact will be enabled if the activation threshold has been reached and if any of the selected options reports too low temperature (heating need). The device will be disabled when all selected options report that the set temperature has been reached or when the condition (Activation threshold+Hysteresis) has been met. Example: Part of the CH system is heated by a fireplace and a boiler. The boiler is connected to the voltage-free contact and the fireplace temperature is read by the T4 sensor (CH). The additional heat source will be activated when the sensor temperature drops below the activation threshold. It will operate until the temperature exceeds the threshold value by the overheating value. The device will be disabled when the room regulator informs that the set temperature has been reached or when the temperature read by the T-4 sensor exceeds the activation threshold by the overheating value.
32

5. BUFFER
The algorithm is based on the readings from two temperature sensors. The device connected to the contact will be enabled when the temperature of both sensors drops below the pre-set value. It will operate until the pre-set temperature of the buffer bottom sensor is reached.

·

Pre-set buffer top ­ the user may define the pre-set temperature.

·

Pre-set buffer bottom ­ the user may define the pre-set temperature.

·

Top sensor – the user may select the sensor.

·

Bottom sensor – the user may select the sensor.

6. DHW BUFFER The algorithm is based on the readings from two temperature sensors. The device connected to the contact will be enabled if the temperature on any of the sensors drops below the set value by the value of hysteresis. After the pre-set temperature of buffer top has been reached, the device will continue to work for the delay time defined by the user. It will be disabled after the pre-set temperature of both sensors has been reached. It is also possible to set the operation of this device based on a weekly program (described in detail in part XIII), which controls the set temperature of the upper sensor. The user can select which sensor will function as the upper and lower sensor.
33

· Pre-set buffer top – this function enables the user to define the pre-set temperature for the upper part of the buffer (top sensor). Once this value is reached and the delay time is over, the pump is disabled (provided that the pre-set buffer temperature bottom has also been reached).
· Pre-set buffer bottom – this function enables the user to define the pre-set temperature for the lower part of the buffer (bottom sensor).
· Top hysteresis ­ the user may set the temperature value at which the contact will be enabled, taking into account pre-set top temperature (Pre-set temperature-Hysteresis).
· Bottom hysteresis ­ the user may set the temperature value at which the contact will be enabled, taking into account pre-set bottom temperature (Pre- set temperature-Hysteresis).
· Delay ­ this function enables the user to define how long the device should remain active after the pre-set buffer temp. top has been reached.
· Weekly control – this function is described in detail in section XIII · Top sensor ­ the user may select the sensor which will function as the top sensor. · Bottom sensor – the user may select the sensor which will function as the bottom sensor.
7. HEATING NEED
The algorithm is based on the readings from one temperature sensor. The device connected to the contact will be enabled if the temperature on the selected sensor drops below the highest set value minus the hysteresis of the selected circuits with a valve. It is also possible to select the DHW circuit; the device will be enabled when the pre-set temperature decreases by the DHW hysteresis. It will be disabled after the highest pre-set temperature of the selected circuits with valves increases by the overheating value, and in the case of DHW – by the the value of DHW overheating, or when the pre-set temperatures in all the selected circuits are reached.
The heating need function may also be based on the operation of the following contacts ( after setting the algorithm: CH pump, additional heat source, buffer, DHW buffer).
· Sensor – the user may select the sensor to provide readings for the contact operation. · Hysteresis – the user may set the temperature value below which the contact will be enabled, taking into account
the pre-set valve temperature (Pre-set temperature-Hysteresis). · DHW HYSTERESIS – the user may set the temperature value below which the contact will be enabled, taking into
account the pre-set DHW temperature (Pre-set DHW temperature-Hysteresis). · Overheating ­ the user may set the value of the pre-set temperature increase for the selected sensor (Pre-set
temperature+Overheating). · DHW overheating – the user may set the value of the pre-set temperature increase for the DHW circuit (Pre-set
DHW temperature+Overheating).
Example:
The controller controls a system heated with CH boiler connected with a buffer, with an additional heating device with three valves. Boiler is connected to a voltage-free contact and operates in Heating need mode. When the temperature of any selected heating circuit is too low and the T4 sensor temperature is too low to heat such a circuit, the additional heat device will be enabled. It will remain active until it reaches the maximum necessary temperature + the pre-set overheating value. The contact will be disabled when this value has been reached or when all selected devices reach their pre-set temperatures. It will be enabled again when the heat source temperature drops below the pre-set value by the hysteresis value or when the selected circuits report too low temperature.
34

8. OPERATION CONTROL
The algorithm is based on the readings from one temperature sensor. The device connected to the additional contact will be used to control the operation of a different contact, DHW pump or room regulators. The device connected to the contact will be enabled when the controlled contact is switched on and the selected sensor fails to reach the pre-set temperature when the delay time is over. It will be disabled when the controlled contact switches off or when the selected sensor reaches the pre-set temperature. When the pre-set temperature is reached and the temperature drops again below the hysteresis, the device will be enabled after the time defined as delay after error is over.
· Pre-set ­ the user may define the pre-set temperature value for the selected sensor. · Hysteresis – the user may set the temperature value below which the contact will be enabled, taking into account
the pre-set temperature (Pre-set temperature-Hysteresis). · Delay ­ the user may set the delay time after which the contact will be enabled. · Delay after error – the user may set the delay time after which the contact will be enabled if the temperature
drops again. · Sensor – the user may select the sensor which will be used to control the contact operation. · Additional contact – the user may select the device to be controlled – additional contact, DHW pump or room
regulator. · Weekly control – the user may define the time and days when the operation control function will be active.
Example: Part of the heating system is handled by 2 CH boilers and a buffer. The task of the boilers is to heat the water in the buffer. Boiler is connected to voltage-free contact 2 with operation control function. The other boiler is connected to voltagefree contact 3 with buffer function. Buffer temperature is read by sensor T4 (CH). Additional contact supporting the boiler will be used to control the operation of the other boiler. If the controlled device does not get activated and the selected sensor fails to reach the pre-set temperature within the delay time, the controller will activate the device connected to the controlling contact.
35

9. DHW
This algorithm is intended for controlling the operation of e.g. DHW pump. It is based on the readings from two sensors. The device connected to the additional contact will be enabled if the temperature measured by the source sensor is 2°C higher than the activation threshold and when the temperature drops below the pre-set value by the value of hysteresis. It will be disabled when the pre-set temperature of DHW sensor has been reached and if the source sensor hasn’t reached the activation threshold.
· Activation threshold ­ the user may set the temperature value above which the contact will be enabled. · Hysteresis ­ the user may set the temperature value below which the contact will be enabled, taking into account
the pre-set temperature (Pre-set temperature+Hysteresis). · Pre-set DHW temperature ­ the user may define the pre-set temperature. · Maximum temperature ­ the user may define the maximum temperature for the source sensor. When this value
is reached, the contact is enabled and it will remain active until the source temperature drops by 2 °C below the maximum temperature or the DHW sensor temperature exceeds the source temperature. This function protects the system against overheating. · Source sensor ­ the user may select the sensor which will provide temperature readings for controlling the contact. · DHW sensor – the user may select the sensor which will provide temperature readings for controlling the contact (pre-set temperature).
10. CONTROLLING THE ROOM REGULATOR
This algorithm is based on the signal from the room regulator. The device connected to the contact will be enabled when the regulator fails to reach the pre-set temperature (the regulator contact is closed). It will be disabled when the regulator reaches the pre-set temperature value (the regulator contact is open). The device operation may also depend on the signal from more than one room regulator – it will be disabled only after all room regulators report that the pre-set room temperature has been reached. If DHW option is selected, the device connected to the additional contact will be enabled and disabled depending on the pre-set DHW temperature – when the pre-set temperature value has been reached, the device will be disabled.
36

11. RELAYS
This algorithm is intended for controlling the device which will be activated together with the selected system devices. Enter Operation modes and configure the mode of contact activation:
· All – the contact will be enabled when all selected relays are active. · Any – the contact will be enabled when any of the selected relays is active. · None – the contact will be enabled if none of the selected relays is active. · Activation delay ­ the pre-set time after which the contact will be enabled. · Deactivation delay – the pre-set time after which the contact will be disabled.
12. WEEKLY CONTROL
Weekly control algorithm enables the user to configure a schedule of contact activation. The user defines the days and time periods during which the device connected to the contact will be operating.

6

1

2

3

4

5

37

1. OFF 2. Copy the previous step 3. ON 4. Change the time period backwards 5. Change the time period forwards 6. Time period bar (24 hours)

Example:

In order to program valve closing for 09:00 – 13:00, follow these steps:

1. Select

2. Use the icon

to set the time period: 09:00 – 09:30

3. Select

4. Use the icon

to copy the setting (the colour will change to red)

5. Use the icon

to set the time period: 12:30 – 13:00

6. Confirm by pressing

It is possible to copy the settings for selected days of the week: Select