MultiFun control system - Kotly.com.pl 100/steering... · 2016-10-27 · The Multifun control system regulator is a modern multiprocessor control system for heating devices. The basic

MultiFun control system

Typ. PELLET_V10

Software: PELLET-EVO-20.09.2013

©Recalart Electronic

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Spis treści

Introduction ............................................................................................................................................................. 5

Warning........................................................................................................................................................... 5

INSTALLATION ..................................................................................................................................................... 6

Warning........................................................................................................................................................... 6

CONNECTION ....................................................................................................................................................... 6

Hazard ............................................................................................................................................................. 6

PRECAUTIONS...................................................................................................................................................... 7

DISPOSING USED EQUIPMENT ............................................................................................................................ 8

Description of the device ......................................................................................................................................... 9

The main run-time module .................................................................................................................................. 9

Description of outputs ................................................................................................................................... 10

Description of measuring inputs ................................................................................................................... 10

Connection diagrams .................................................................................................................................... 11

Installation diagrams .................................................................................................................................... 13

Control panel ..................................................................................................................................................... 15

Description of main elements ........................................................................................................................ 15

Main menu .................................................................................................................................................... 15

User menu ............................................................................................................................................................. 17

Temperatures .................................................................................................................................................... 17

Heating temperature..................................................................................................................................... 17

HW temperature ........................................................................................................................................... 17

SYMBOLS ........................................................................................................................................................... 17

Turning on the boiler ..................................................................................................................................... 17

Turning off the boiler..................................................................................................................................... 18

Fuel selection ................................................................................................................................................. 18

Time settings ................................................................................................................................................. 18

History and statistics ..................................................................................................................................... 18

SUMMER/WINTER modes ............................................................................................................................. 19

Manual mode .................................................................................................................................................... 19

Manual control .............................................................................................................................................. 19

Sensor test ..................................................................................................................................................... 21

Advanced ........................................................................................................................................................... 22

Burner ............................................................................................................................................................ 23

CH circuit ....................................................................................................................................................... 26

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HW CIRCUIT ................................................................................................................................................... 29

Clock .............................................................................................................................................................. 31

Other ............................................................................................................................................................. 31

Service menu ......................................................................................................................................................... 32

BOILER ............................................................................................................................................................... 32

Minimum temperature .................................................................................................................................. 32

Maximum temperature ................................................................................................................................. 32

Critical temperaturę of the boiler .................................................................................................................. 32

Return protection temperature ..................................................................................................................... 32

Boiler type ..................................................................................................................................................... 33

Burner ................................................................................................................................................................ 33

Prolonging the operation of the burner feeder ............................................................................................. 33

Emergency temperature of the feeder .......................................................................................................... 33

Dispenser feeder capacity ............................................................................................................................. 33

Fuel ................................................................................................................................................................ 33

CH circuit ........................................................................................................................................................... 33

Mixer ............................................................................................................................................................. 33

Circuit control ................................................................................................................................................ 34

HW circuit .......................................................................................................................................................... 35

HW priority .................................................................................................................................................... 35

Circulating pump ........................................................................................................................................... 35

HW rundown during summer ........................................................................................................................ 36

Buffer pump ...................................................................................................................................................... 36

Operation activation ..................................................................................................................................... 36

Upper temperature ....................................................................................................................................... 36

Lower temperature ....................................................................................................................................... 36

Operation modes ........................................................................................................................................... 37

The beginning of service ................................................................................................................................ 37

The end of service .......................................................................................................................................... 37

Minimum temperature of pumps .................................................................................................................. 37

Automatic upper temperature ...................................................................................................................... 37

Default settings ................................................................................................................................................. 37

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Introduction

The following instruction manual was written for all users who will connect, install, operate and conduct routine

maintenance of Multifun control system regulators. The instruction manual includes descriptions of installation,

wiring, functions and operating procedures. It should be kept near the workplace area while operating the

regulator. The information contained therein must be always followed.

Warning

Should any fault occur or accessories are missing, please contact your local dealer or sales office at RECALART ELECTRONIC. MULTIFUN CONTROL SYSTEM regulators are designed for mounting in control cabinets or similar installations in a way that prevents their contact with electrical cable thimbles. Do not remove the regulator from the housing. Your hand or other conductive body must not be found in the housing. This could result in a serious injury or death due to electrical shock. To avoid damage to the connected equipment or the MULTIFUN CONTROL SYSTEM regulators, prior to using the device take any safety measures necessary, such as installing a fuse, overheat protection device, etc. Should an accident caused by using the product without observing these safety measures occur, the warranty will be void. The power switch in the external circuit of the regulator turns off power. The switch needs to be installed on the device in a position that allows for ease of use. There should be a message that the switch turns off power. Use a switch which meets IEC947 standards. The device does not have a built-in fuse therefore a fuse must be installed in the power circuit when connected to a phase terminal. The fuse should be placed between the power switch and the device and mounted on the "L" side of the phase terminal. Fuse rated values/characteristics: 250 VAC 6.3A quick. Use only a fuse complying with IEC 127 standards. Voltage/current values of load to connect to the output terminal and the alarm terminal should be placed within the range of the rated values. Otherwise, the temperature will increase and reduce the regulator's life causing problems in the operation of the device. Voltage/current other than specified in the input specifications should not be attached to the input terminal. This may shorten the instrument's life and cause operation problems. For the voltage or current input, the input terminal should be connected to a device that meets IEC1010 requirements. The device may have vent holes to carry off heat. Metal elements or other that can damage the device or cause fire must not get inside the holes. The vent hole must not be blocked nor contaminated. A temperature increase or insulation failure may shorten the instrument's life or damage it. Moreover, these situations may be a direct cause of a fire. Information about spaces that separate the regulators in the control cabinet in are described in chapter en. "Internal dimensions and a panel cut-out" of the service documentation.

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It should be noted that repeated tolerance tests for voltage, disturbance, surge, etc., may deteriorate the instrument's operation. Changes made to the device or its improper use is prohibited.

INSTALLATION

The regulator should not be used in the following places: • In environments including flammable gas, corrosive gas, oil mist or particles that can deteriorate the electrical insulation. • In an atmosphere at a temperature below 0°C or above 55°C and relative humidity above 90%RH or below the dew point. • In an environment with high vibration or shock levels. • In locations exposed to high electromagnetic interference. • In areas exposed to direct sunlight. • In an environment at a height of over 2000 meters above sea level • Outdoors. The aforementioned places can cause malfunctions, fire or damage to the device.

Warning

For safety reasons, do not remove the regulator body from the housing. If it is necessary to remove it from the

housing to replace a part or conduct repairs, please contact your nearest sales representative.

CONNECTION

Assembly procedures should be carried out only by persons qualified in the subject of electric device installation.

Przy wykonywaniu podłączenia regulatora należy zwrócić szczególną uwagę na następujące warunki:

Hazard

Electrical wiring assembly- or disassembly-connected installation works can be carried out only after switching off the power supply of the device. Cable thimbles and other live elements of the device must not be touched. All connections made must be compatible with the electrical wiring diagram as well as national or local requirements for electrical connections. 1. When carrying out the assembly of the regulator's electrical installation, the instructions of this manual must be carefully followed. 2. Copper cable connections should be adjusted to operate at temperatures up to 75°C. 3. For the thermocouple input, a compensating lead which corresponds to the type of the thermocouple needs to be used. 4. The input signal cable should not be placed in the same conduit as the AC power cable. 5. Using a suitable cable (a twisted pair) for input signals is effective and protects against interference caused by electromagnetic induction.

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6. To power the regulator, use a cable the parameters of which are the same or higher than those for the cable insulated with 600V vinyl with a cross-section of 1 mm2 or bigger. 7. Tighten the terminal screws to a torque of 1.0 Nm. 8. If the device proves sensitive to power disturbances, a disturbance eliminator should be

used to prevent malfunctions. The disturbance eliminator should be mounted on a grounded panel and cable connections between the output of the disturbance eliminator and regulator power line terminals should be as short as possible.

PRECAUTIONS

• The attached instruction manual has to be carefully read prior to using the device. • The instruction manual needs to be kept and referred to when necessary. • All rules and warnings in the instruction manual have to be followed. • The device must not be damaged in any way. If in doubt, the appliance cannot be used and your supplier must be contacted. • If there are any doubts concerning a safe operation of the equipment, please contact your supplier. • Special attention should be paid to all warning labels on the box and the housing. • The device must be used in accordance with its intended purpose. • This is not a toy. Children are not allowed to play with it. • Children are not allowed to play with any part of the packaging. • Keep small parts, such as screws and pins, out of reach of children. These elements can be provided along with the device and if swallowed can cause death by suffocation. • Do not make any mechanical or electrical changes to the device. Such changes may result in improper operation of the unit which does not conform to standards and affect it negatively. • No elements should be inserted into the device through slots (e.g. vent slots). This may cause a short circuit, electric shock, fire or damage to the device. • Do not allow water, moisture and dust inside the device. This may cause a short circuit, electric shock, fire or damage to the device. • Proper ventilation of the equipment must be ensured. Do not cover or block the ventilation holes to ensure free air flow. • The unit must be installed inside premises unless it is adjusted to outdoor use. • The unit must not be exposed to shock and vibration. • When connecting the device, the parameters of the electrical supply network must meet the operation range of the unit. • To avoid an electrical shock, the unit should be connected to a grounded wall outlet. The grounding must be made by an authorized electrician. • When connecting the device, make sure that the electrical circuit will not be overloaded. Avoid connecting the device to one circuit with motors and other devices that could cause interference (e.g. washing machines, refrigerators, ...). • Prior to connecting any cables and wires to the device, the power supply must be disconnected. • To disconnect the unit from the power supply, pull out the plug from the outlet. The device should be disconnected when left unused for a long time. • Protect the power cord against damage.

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• All connections must be compatible with the electrical wiring diagram and national or local electrical requirements. • This unit does not contain parts that can be replaced by the user. All service operations except for cleaning, fuse replacement (when disconnected) and function setting should be made by qualified service personnel. • Prior to carrying out any maintenance work, the unit must be disconnected from the power circuit. • The housing cannot be cleaned with gasoline, solvents or other chemicals that may damage it. We recommend using a soft cloth. • If the AC power cord is damaged, do not use it. A damaged cable must be exchanged for a new one with the same specifications.

DISPOSING USED EQUIPMENT

The electronic unit is partly made of recyclable materials. For this reason, when used up it

must be subject to recycling or returned to the manufacturer. The equipment must not be

disposed of along with other domestic waste.

The following instruction manual should be given to a final user of the device.

SAFETY OF USE

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Description of the device

The Multifun control system regulator is a modern multiprocessor control system for heating

devices. The basic version of the system consists of a control panel and a main run-time

module. These devices are connected via a LAN cable and an RJ45 type connector. Additional

modules can also be connected using this cable. Data transfer is carried out in RS485

standard. A modified MODBUS protocol ensures a correct data exchange.

The main run-time module

For the basic operation of the device, boiler sensors need to be connected to the run-

time module without which the boiler will not work properly:

• Boiler feed temperature sensor [BOILER FEED]

• Feeder temperature sensor [FEEDER]

• Flame sensor [PHOTODETECTOR]

To successfully run other functions of the controller, appropriate sensors must be connected

to the run-time module:

• Fan hall generator* - recommended when using a fan with a revolution number sensor.

• Hot water temperature sensor [HW] - when water heating.

• Central Heating temperature sensor [CH] - to control the mixing valve

• Return temperature sensor of the heating medium [Boiler Return] - protection against cold

water returning to the boiler. The sensor is necessary to work with the mixing valve or the

circulating pump

• External temperature sensor [External] - required if the weather function is active

• Room 1 temperature sensor [Room1] -

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Description of outputs

Description DEVICE

Dispenser feeder Fuel feeding screw motor - max. 1,2(0,6)A 230V~

Blower Blower motor - max. 1,2(0,6)A 230V~

Burner feeder Fuel feeding screw motor - max. 1,2(0,6)A 230V~

Heater Heater - max. 4(2)A 230V~ (inductive loads require an additional RC suppression system installed externally)

C.H. pump 1 Central Heating circuit pump 1 – max. 1,2(0,6)A 230V~

HW pump HW dispenser pump – max. 1,2 (0,6) A 230V~ The HW pump is turned on if water heating is required.

HW circulating pump HW circulating pump – max. 1,2 (0,6) A 230V~ The HW circulating pump is turned on when the twenty-four hour program on the HW is turned on

Closed mixer 1 Mixing valve actuator (closing) – max. 1,2 (0,6) A 230V~

Open mixer 1 Mixing valve actuator (opening) – max. 1,2(0,6)A 230V~

Emergency pump Emergency pump –max. 1,2 (0,6) A 230V. Emergency pump configuration as a buffer or BYPASS pump

Description of measuring inputs

Description DESCRIPTION OF A SENSOR

BOILER FEED A measuring input for the boiler temperature sensor; the sensor is mounted in the boiler measuring hole. The sensor is required for proper operation of the boiler.

Fumes PT1000 type sensor (not included in the standard version)

Feeder sensor A measuring input for the feeder temperature sensor; The sensor is required for proper operation of the boiler.

BOILER RETURN

A temperature sensor on the return position from the heating system; the sensor is mounted on the return pipe on the boiler or in a special boiler measuring hole or a pipe. Proper contact between the sensor and the pipe is necessary! The sensor is available in an additional set.

HW A measuring sensor input for hot water; the sensor is mounted in a measuring hole of the hot water exchanger.

CH Connect only when the actuator is mounted on the mixer of the CH circuit - the temperature sensor is behind the mixing valve, the sensor is mounted

on a pipe behind the mixing valve using a clamping ring and insulation.

Ensure proper contact between the sensor and the pipe. The sensor is

available in an additional set.

Photodetector This sensor detects fire in the combustion chamber.

Fan Hall generator

The sensor cooperates with fans that have a built-in Hall generator (option – depends on the blower used)

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Connection diagrams

Figure 1. Electrical connections diagram for the run-time module.

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LEGEND: G-igniter, W-blower, P2-feeder

Figure 2. Burner joint connection diagram.

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Figure 3. Burner control.

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Installation diagrams

C1-boiler feed sensor, C3-HW sensor, C4-CH sensor, C5-Upper buffer sensor, C6-Lower Buffer sensor, C7-external sensor, C8-room sensor, C9-feeder sensor, F-flame sensor, P1-dispenser feeder, P2-burner feeder, G-heater, P1-CH pump, P2-HW dispenser charging pump, P3-HW circulating pump, P4-buffer pump, M1-mixing valve actuator.

Figure 4. Hydraulic installation with heat buffer diagram

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C1-boiler feed sensor, C2-boiler return sensor, C3-CH sensor, C4-CH sensor, C7-external sensor, C8-room sensor, C9-feeder sensor, F-flame sensor, P1-dispenser feeder, P2-burner feeder, G-heater, P1-CH pump, P2-HW dispenser charging pump, P3-HW circulating pump, P4-buffer pump, M1-mixing valve actuator.

Figure 5. Hydraulic installation without heat buffer diagram.

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Control panel

Description of main elements

1- Signaling LED

2- Knob with a button used to enter the menu and choose parameters.

3- Info button – enters the info or help screen

4- Exits the menu.

Main menu

Main menu description

Main menu 1- Calculated burner output 2- Flame brightness 3- Dispenser feeder operating conditions 4- Burner feeder operating conditions 5- Fan operating conditions 6- Heater operating conditions 7- Measured boiler temperature 8- Calculated boiler temperature 9- Boiler gas measured temperature

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A- CH circuit 10- CH pump operating conditions. 11- Operating conditions – opening mixing valve 12- Operating conditions – closing mixing conditions 13- Signaling of the attached mixing valve 14- Mixer turned off 15- Measured temperature on the CH sensor 16- The controller is in the LATO mode (CH circuit turned off) 17- Shorted thermostat signaling* (for circuits number 2 and 3) 18- Heating state signaling on the CH circuit 19- Temperature decrease state signaling on the CH circuit (for circuits number 1 and 4)

B- HW circuit 20- HW circulating pump operating conditions 21- HW tank loading pump operating conditions 22- Circulating pump turned off 23- HW circuit turned off (CH sensor not connected) 24- Measured hot water temperature

C- Info window 25- Measured external temperature (displayed for CH circuit type no. 3 and 4) 26- Day of the week display (i.e.: 1-Monday, 7 - Sunday) 27- Clock 28- Measured room temperature (displayed for CH circuit type no. 4)

D- Boiler operation type 29- Turning on boiler 30- Turning off boiler 31- Burning condition 32- Feeding condition 33- Stop – fan and feeder turned off

E- Emergency pump configuration 34- Buffer charging pump operating conditions 35- BYPASS pump operating conditions (for an inactive emergency pump the place is empty)

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F- Boiler screen 36- Emergency state on the boiler (if there are no emergency states, a boiler icon will be displayed)**

User menu

Temperatures

Heating temperature

In the weather mode (with an external sensor), room temperature is set (adjustment range

from 5 up to 30 degrees C). For configurations without a room sensor (configured by the

Service), the control range for this parameter equals the boiler temperature level.

HW temperature

Set the hot water temperature in the dispenser.

SYMBOLS

The most frequent used functions of the regulator are put in m >Symbols

Turning on the boiler

1. Prior to turning on the boiler, make sure there is fuel in the burner. To do so, turn on the burner for a short period of time.

>Manual mode >Manual control>

2. Activating the turn-on process: >Symbols>Turning on

3. Information about the turn-on state on the screen

4. The regulator will finish the turn-on process after detecting fire in the furnace chamber. The regulator will switch into BURNING mode.

Warning! It may be impossible to turn on the boiler when:

The controller is in the burning state

The turn-off process has been activated

The controller is sustained

The turn-on process was started earlier

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Turning off the boiler

1. Turn-off process activation >Symbols>Turning off

2. The turn-off process will start automatically. The turn-off icon will be displayed on the main screen.

3. The turn-off process will be stopped when the regulator will not detect a flame in the furnace chamber. The regulator will enter the STOP mode.

Warning! It may be impossible to turn off the boiler when

The turn-on process was started earlier

The turn-off process was started earlier

Fuel selection

Fuel selection to be used in the boiler. For the Pellet option, the regulator controls the burner and the feeders.

For the Wood option, the regulator controls only the blower, the turn-on and turn-off options do not work.

Time settings

Time setting in the controller. The date needs to be set in the advanced menu/Clock.

History and statistics

1. Stages of browsing history and statistics

1- External temperature axis 2- Date 3- Hours 4- Next 5- Displayed data on charts, i.e.:

- boiler temperature chart ON

- boiler temperature chart OFF 6- Go to data selection:

- chart browsing ACTIVE.

- chart browsing INACTIVE 7- Temperature axis for remaining data

2. Go to the statistics marking screen

8- Time marker 9- Marked data area - Start 1 10- Marked data area – End 1 10- Marked data area - Start 2 12- Marked data area – End 2

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3. After selecting two areas the screen goes to statistics

13- Temperatures 14- Burner – fuel consumption 15- amount of burned Kg or Kg/h 16- first range of statistics 17- second range of statistics min – minimum temperature avg – average temperature max – maximum temperature

The history of the installation operation is updated every 1 minute. The maximum history memory capacity is 10

days. By using the menu visible on the right-hand side of the screen, it is possible to hide unnecessary charts.

This increases legibility of information on the screen. After selecting the data range, the controller calculates the

average value for the data. It is possible to compare two different time periods (e.g. boiler room operation on a

Monday and on a Tuesday) to analyze the influence of control settings on fuel consumption. The controller

shows total fuel consumption in a given period and average burning per hour. Moreover, data (work history)

can be saved to an SD card and analyzed on a PC.

SUMMER/WINTER modes

Select the operating mode. This option chooses the operating mode though it is possible to choose the AUTO

mode (more on SUMMER/WINTER/AUTO).

Manual mode

The manual control mode is used to check devices and sensors connected to the regulator.

Manual control

This allows forcing operation of particular devices. The knob is used to select a device. The operation state of a device is made by pressing the knob. The knob can be also used to set fan power. The v31.09 software version (and higher) include information about the number of revolutions per minute if the

Hall generator is working and connected. This information is shown on the rpm symbol. Sample screens:

If the Hall generator is not connected or it is damaged, the rpm symbol is replaced with red lines.

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- inactive device

- active device

Symbol Description Additional information

Fan Fan power setting

Feeder

Exchanger

pump

HW pump

HW

circulating

pump

CH pump

Mixing valve - mixing valve, open

position

- mixing valve,

closed position

Dispenser

feeder

Heater

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Sensor test

Sensor test allows reading current temperatures on sensors connected to the boiler

Translation:

Boiler feed 56°C

Boiler return 41°C

Feeder 24°C

CH 38°C

HW 32°C

Furnace gas 123°C

External 24°C

Internal no. 1 open

Buffer-upper 35 C

Buffer-lower 29 C

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Advanced

Fuel selection

The WOOD option is recommended only for boilers with an additional grate when burning wood. In this option,

the burner does not work. Only the fan is used which works in a comparable manner to wood-fired boilers. The

PELLET option activates all the functions of the regulator and the burner.

Type of work

Select the type of operation: Burning-feeding or Burning-stopping. For full automatic operation of the burner,

we recommend setting the burning-stopping option.

Burning-stopping enables fully automatic operation of the burner which is turned on and off by the regulator

according to the actual heat demand. This type of operation is recommended in the summer. In the WINTER

mode, adjust the FLAME FEEDING TIME parameter to limit the number of burner turn-ons. In the menu (flame

feeding mode) set the time for which the regulator is in feeding mode (after reaching a desired temperature

value) waiting for the boiler to cool off. If this does not happen, the regulator will automatically turn on the

stopping function. This option will reduce electricity consumption due to a lower number of ignition-operation-

stopping cycles. When the boiler has a lower temperature than it is required, the self-ignition function will be

turned on automatically.

Note: Setting the FLAME FEEDING TIME to zero will immediately stop the burner after heating the boiler to the

set temperature.

The feeding function operation is recommended in the winter period. For this setting, the burner does

not stop automatically (this can be done manually by selecting the STOPPING option in SYMBOLS). If the flame

turns off, the controller reports an error and stops the burner control. To resume the operation, manually select

the TURN ON option in SYMBOLS. Therefore, this is a type of semi-automatic operation.

PID

PID activation is smoother operation of the burner that gradually adjusts the burner output with an accuracy of

1%. During winter, this significantly increases the operating time of the burner after a single ignition.

Note: when the PID option is enabled, the regulator has more options in the menu - Advanced/burner/burning.

It is also required to set the parameters for three burner output levels, i.e. one level higher than when working

with the PID option off.

For the PID off, it is easier to set the burner because the parameters for the minimum and maximum burner

output are to be set. The regulator for the boiler temperature lower than the value of 1/2 hysteresis operates at

maximum output and after exceeding it (1/2 hysteresis) - at minimum output. When the boiler temperature is

exceeded by more than the set hysteresis x 2, the burner will be turned off.

Hysteresis

The parameter is of importance only for operation with the PID option turned on.

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ECO mode

The ECO mode is recommended during summer. In this option, the burner is turned off when the boiler is heated

up and the boiler temperature can decrease to any value (the anti-freeze function is still active). For the ECO

mode turned off, the regulator always tries to maintain a minimum temperature in the boiler. Therefore, the

burner may be turned on only to heat up the boiler, although in a given moment, none of the circuits will need

heating up (for example, the dispenser is heated up and the CH circuit does not need heat - night decrease).

Burner

Turning on

Fan operation prior to starting the turn-on process. The blowthrough aims at cleaning the furnace chamber of

any flammable gas to safely turn on the boiler.

The time for which the feeder is to be turned on when feeding the first portion of fuel.

Heater operation time prior to turning on the fan.

Note: depending on the heater model, set the time specified by the manufacturer. For some models, it is

required to set 0 sec., because the heater operation without cooling it with air may damage it.

Fan output during boiler turn-on. This parameter should be set depending on the type of fuel and chimney

draught.

A too long operation time may damage the heater. Set the heater operation time according to documentation.

After the maximum heater operation time passes, the regulator will turns off the heater and go to the next step

of the turn-on procedure. The heater will be turned off earlier when the light sensor detects a flame in the

burner.

This parameter specifies the flame brightness in the burner the regulator of which acknowledges that pellet is

burning. During the turn-on process, the heater is turned off and the full turn-on stage takes place. During

burning, the regulator controls the flame brightness. When it remains lower than the set threshold, an

emergency stop of the burning process is activated and the burner is turned off.

If, during the ignition procedure, the regulator does not detect a flame after the set time, the ignition process

will start again. After the second failed attempt, the regulator will trigger an emergency stop of the burner. If

the ignition process goes smoothly and the fuel is ignited, the regulator will gradually enhance the airflow

during the whole full ignition time. Please note that the burner has only a starting portion of fuel and the time

Blowthrough time

Initial charge time

Heater heat up time

Fan output

Maximum heater operation time

Flame brightness

Full ignition time

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must be set to completely ignite this amount of fuel. A too long ignition time will burn the whole amount of fuel

and the flame will go out.

Burning

During the burning phase, the burner can be operated in two modes: with a variable output regulation called

PID control, and two-stage control (PID disabled). In the first option, it is possible to overheat the boiler by 8 C,

especially when the installation is chilled. However, after heating the installation, the burner operation

parameters will adjust to the amount of heat received and the temperature change in the boiler should be

gradually reduced. In this operation mode, the controller tries to match the burner output to heat demand by

changing the burner output with an accuracy of 1%. The burner operates in very long cycles and in a properly

made installation it can operate without being turned off, changing the output according to heat demand.

In the burning mode with the two-stage control, the burner works at maximum output until the set temperature

of the boiler is exceeded by 1/2 hysteresis of the burner. Then, it is switched to minimum output. During winter,

such activity should decrease the temperature in the boiler and switch the burner back to maximum output.

Where there is insufficient take-off and the temperature in the boiler increases, even when the burner operates

at minimum output, it will be switched to the feeding mode when the boiler temperature exceeds the set

hysteresis value. The burner will be turned off if the temperature increases further. When the set temperature is

exceeded by a value of 2x hysteresis, the hysteresis will turn off the burner.

Set the parameters of the burner to values that allow for proper operation for about 20% of rated power of the

burner. The following parameters are available:

1. Feeder operation time - fuel feed time in seconds, after feeding a portion the feeder stops for a time

described below. Set only the feeder operation parameters. The burner feeder turns on simultaneously with the

dispenser feeder, but operates for a longer period. The exact time of the feeder operation is set by the Service by

determining the elongation of the feeder operation time in %.

2. Feeder standby time - the feeder operates in the operation/standby cycle. It is recommended to use a short

feeder operation time and adjust the amount of fuel by changing the standby time.

3. Fan output - fan output should provide for an optimum amount of air required for fuel burning.

This parameter needs to be set when the PID option is turned on (see PID). The parameters are the same as in

the above item, but they must be chosen so that the burner produced about 50% of rated power.

Note: If the PID is turned off, the AVERAGE OUTPUT option will be displayed in the menu.

The set of parameters are the same as for MINIMUM OUTPUT. However, they should produce 100% of rated

power.

Minimum output

Average output

Maximum output

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The "Output selection" menu is available only for the PID option enabled (see PID). This parameter helps to set

the burner operation parameters for each output (minimum, average and maximum). It is possible to choose a

particular burner output by selecting one of the following options:

• Minimum output

• Average output

• Maximum output

The burner operates at the selected output until the boiler heats up to the set temperature. At this time, it is

recommended to control the burning parameters described above (see Minimum output). After making the

adjustments, set the AUTO option or disable the PID operation (see PID).

Feeding

Burning feeding consists in burner operation at minimum fuel consumption. Its aim is to feed heat and quickly

enter the burning phase without following the burner turn-on and turn-off procedures. It allows reducing

electric energy consumption of the burner (no heater) and quickly raising the temperature in the boiler. Using

this function is recommended in the WINTER mode. The following is a discussion of the available parameters.

These parameters define burner operation in a comparable manner to operation in a normal burning phase.

However, the parameter settings in FEEDING should generate a minimum burner output and not lead to burner

turn off.

Feeding portions should be much smaller than the minimum output settings. Parameter settings must be made

after heating the boiler and an additional reduction of preset boiler temperature for the control time. This way,

the burner adjustment time can be prolonged.

Attention should be paid to stable operation of the fan. It may happen that when the output is low, the fan

stops which can lead to its damage. On the other hand, high airflow will burn the fuel too fast.

After reaching the desired temperature, the regulator always goes to the burning feed phase. It is not important

whether the burner has the PID parameter turned on or not (the turn-off point varies depending on the PID

setting - see Burning). However, immediate stopping can be triggered on the burner by setting the parameter

value to 0. If a different value is set, the regulator feeds the burning process by waiting for the temperature to

drop to continue the process. If the temperature does not drop for the set time, the stopping function will be

turned on (description below).

Stopping

The stopping process can be activated manually (SYMBOLS menu) or triggered automatically. In the first

stopping phase, the dispenser feeder is blocked. The burner fuel is burned the same way as in the burning phase

until the flame brightness decreases below a set value (see Flame Brightness). From this moment, the regulator

launches the final stopping the time of which is set using the "fuel burning time" parameter. At this time, the

Output selection

Feeder operation time

Feeder standby time

Fan output

Flame feed time

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fan changes the output to the value fixed in the "Stopping" submenu. After the set time runs out, the fan

switches on the maximum output for 1 minute and cleanses the burner of ashes.

Set an appropriately long time to burn up the heat in the burner.

During the stopping process, the airflow should be small so as not to throw the burned pellet to the ash bin.

CH circuit

The CH circuit submenu is adjusted to an option – circuit control – selected by the installer.

CH pump1

Note: The CH pump will be turned on in the anti-freeze mode when the external temperature is lower than -2°

and the boiler temperature drops below 10°

This parameter determines the CH pump operation in a simple system, i.e. in a system without a mixing valve

with an actuator. If the Service enables the mixing valve operation mode (SERVICE menu), the pump will operate

in a continuous manner in the winter mode - the settings of the parameter discussed further are irrelevant. The

available options are:

1. 100% block - a signal from the room thermostat blocks the pump - the pump is not operating

2. Modulated operation - a signal from the room thermostat activates the intermittent operation (discussed

further)

3. 0 % block - the room thermostat has no influence on the operation of the CH pump. This setting is

recommended if the installation is extensive and the modulated operation of the pump cannot heat distant

radiators.

The aim of modulated operation of the CH pump is to lower radiator temperature based on information from

the room thermostat. Measuring input short-circuit of the room is a signal for the regulator to use one of the

three operation modes of the CH pump. The discussed parameter has influence on the operation of the pump in

the "Modulated operation" mode. This parameter determines the pump operation time (fixed from 1 minute up

to 60 minutes). After the operation time runs out, the regulator blocks the pump for the entire standby time -

see the description below.

After the operation time, the pump stops for a set time. The setting range is from 10 up to 60 minutes.

1 This option is available only for the following setting :”Circuit control” in: Thermostat and Thermostat +

external sensor

Fuel burn up time

Fan output

Pump operation mode

Modulated operation – operation time

Modulated operation – standby time

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Heating temperature decrease

Heating temperature decrease is a parameter that is set according to a selected "circuit control" option (set by the Service). For manual control, the temperature decrease of the heating system is set in %. The temperature decrease is set in the CH Program option (see description below). For installations equipped with a room thermostat (no weather sensor), the measuring input short-circuit of the room sensor is a signal to the controller to lower the heating temperature by a set % value. For installations with a mixing valve, the valve will be closed and the temperature of the boiler will be decreased. For installations with an external sensor (the "circuit control" option needs to be set by the Service), the decrease is set in °C. The set value should apply to room temperature reduction. The controller will convert it to a heating temperature decrease value taking into account the current external temperature and the set weather characteristics. NOTE: 1. PELLET fuel set. If the boiler temperature decrease is high, the regulator can stop the boiler. For a several-degree decrease (especially for the PID option enabled - see: Advanced/boiler/PID), the regulator will reduce power output without stopping it. 2. WOOD fuel set. The boiler temperature will not be reduced below the minimum boiler temperature allowed by the manufacturer that is set in service parameters. Due to the risk of corrosion (a phenomenon of dew presence in the burning chamber), the controller maintains a minimum temperature in the boiler (see the minimum temperature parameter).

SUMMER/WINTER/AUTO2modes

This parameter is used to manually switch the regulator into the SUMMER or WINTER mode. Moreover, the

AUTO mode can be chosen - the controller will automatically switch into the WINTER or SUMMER mode based

on the outside temperature.

In the summer mode only Hot Water is operated. In the WINTER mode, the controller controls the entire heating

(CH + HW).

Weather characteristics3

If the Service sets an option that uses the external sensor, the menu will display a possibility to set weather

characteristics. The regulator has 13 ready-made characteristics to choose from. They were prepared for

buildings with different thermal isolation and different heating systems. When choosing the right option for a

specific building, attention should be firstly paid to the heating type. For underfloor heating, characteristics in

the range of 1-4 should be chosen, for radiator heating, 4-13. Then, insulation quality should be assessed. The

worse the thermal insulation of the building, the higher the number of characteristics should be. The best

solution is to select the average value. For underfloor heating it is good to set number 3, for radiator heating -

number 7.

The full range of characteristics offered by MULTIFUN is presented further.

2 The AUTO operation mode is possible only for configurations with the external sensor. For simple options, the

AUTO mode is not displayed. See „circuit control”. 3 The parameter is visible only after setting the operation configuration with the external sensor in the „Circuit

control” (two configurations are available)

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Note: A change in the room temperature (Temperatures/Heating temperature menu) has influence on the

weather characteristics that adapts to new requirements.

Room sensor - adjustment4

The controller will automatically correct the heating temperature after detecting differences between the room

temperature set value and the sensor reading. The adjustment allows increasing the influence of the sensor on

the CH temperature changes (values greater than zero) or decreasing it (negative values). For underfloor

heating, it is recommended to set the value of 60%.

Room sensor - calibration5

Due to cable length and sensor execution precision, the temperature indication may differ from the actual

values by a few degrees. Using the knob allows setting the correct value by carrying out sensor calibration. The

corrected value is displayed in the upper right corner of the display.

AUTO temperature - SUMMER/WINTER

This parameter is used only when the Service turns on the operation with the external sensor. Moreover, the

user must select the AUTO MODE (menu - Advanced/CH circuit/Summer/Winter/AUTO mode). When the

external temperature exceeds the set value, the regulator switches to the SUMMER MODE. When the

temperature drops - it switches to the WINTER MODE. (See the above description - SUMMER/WINTER MODE).

CH program6

The CH program operates on a similar basis as the HW described below (see The weekly CH program). The time

interval marked with a black rectangular means heating operation with the set temperature. During the

remaining time, the regulator will reduce the temperature according to the Heating temperature decrease

setting. 4

5 This option is available only for the „circuit control” setting on the position: ROOM TIME +EXTERNAL TIME

6 This option is available only for the „circuit control” setting on the position: MANUAL and ROOM TIME

+EXTERNAL TIME

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HW CIRCUIT

HW temperature

Setting the HW dispenser temperature is possible in the range from 15 up to 60 C. Moreover, this parameter is accessed from the level of TEMEPRATURES menu and ADVANCED/HW circuit. When the dispenser temperature is lower than the set value by HW hysteresis, the regulator will initiate the dispenser load process. When the temperature is higher than the set temperature plus HW hysteresis, the loading process is completed. Note: 1. Dispenser loading consists in starting the HW pump. The pump will be turned on when the boiler temperature is higher than the so-called "minimum boiler temperature" set by the Service. 2. In the summer mode, the HW pump is turned off with a delay in the range from 3 up to 10 minutes (set by the Service) after finishing the dispenser loading process (see the description of HW hysteresis).

HW hysteresis

A smaller value means a precisely maintained dispenser temperature, but also more dispenser loading cycles

and more burner ignition cycles (especially in SUMMER). Setting a value of e.g. 20°C means that the dispenser

loading process will be turned on when the temperature drops 10C below the set CH temperature and ends

when the dispenser temperature is about 10C higher than the set value.

CH program

The regulator requires setting the CH heating program for each day of the week. The user can choose from

three default programs and two user programs. The following are the default programs:

Pr:1 5:30 AM - 7:30 AM and 3:00 PM - 9:30 PM

Pr:2 7:00 AM - 10:00 PM

Pr:3 0:00 AM - 11:59 PM

As can be seen, the CH heating program no.1 has two time periods. The first is in the morning and the second in

the afternoon. Program no. 3 is a twenty-four hour CH heating.

User programs numbered 4 and 5 can be set freely (described further in the following menu items)

Days of the week are designated with numbers from 1 to 7, where 1 is Monday, 2 - Tuesday, etc.

Each of the five daily programs can be "connected" to the appropriate day of the week, depending on user's

needs.

Weekly programming consists in choosing a daily program number (turn the knob), then proceeding to the next

day of the week (press the knob) and re-selection of the program number (turn the knob). These steps have to

be repeated until the whole week is set. To finish the process, press EXIT.

CH weekly program

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Description of activities

Select the program number for a chosen day of the week. The user can choose from three default presets and

edit two programs. The black bar indicates the time to

maintain the desired temperature in the HW dispenser -

the HW pump and the circulating pump are operating.

In the remaining time (blank space) - inactive function

(the HW pump and the circulating pump are not

operating).

-change the program number with the knob

- change the day of the week, press the knob

The return button exits the function.

One of two daily user programs. This program can be used on any day of the week during the weekly HW program. The regulator allows determining the time in which the HW will be heated to an accuracy of up to 30 minutes. Any number of time periods per day can be set. This can be useful if the HW circulating pump is installed. Programming consists in setting the cursor in an appropriate place on the timeline (turn the knob), pressing the knob to activate the area selection mode to choose the area during which the HW will be heated and moving the cursor (turn the knob). The area selection mode will be deactivated after pressing the knob again and deleting the previously selected heating area. Note: It should be noted that the HW circulating pump, which is to provide hot water immediately after pressing

the tap, also cools water. The regulator activates the pump according to the settings input by the Service, but

only when the HW heating program is set. Therefore, the time can be precisely set when hot-water is used

which allows minimizing loss of fuel.

Description of activities

The black bar and the icon mean the heating is ON - the HW pump and the circulating pump are operating. In the remaining time (blank space) - disabled function, the HW pump and the circulating pump are not working, decreased temperature is maintained.

-change the time interval with the knob

- turn on the heating by pressing the knob

The return button exits the function.

Program no. 4

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Operation and service is analogical to Program no. 4.

Legionella(ON/OFF)

Activation of this function aims at destroying Legionella (bacteria) in the HW dispenser. The process is carried

out by heating the dispenser up to 70°C and maintaining this temperature for 2 hours. This function starts

automatically every Monday at 1:00 AM.

HW priority

The active parameter disables the heating system in a building for the heat up time of the HW dispenser. In

installations with no mixing valve with an actuator, the CH pump is blocked. An installation equipped with a

mixing valve will close it for the dispenser loading time (the CH pump is operating in this case).

Note: The priority is active for a given time. The Service sets the maximum time after which the HW priority is

switched off while the HW heating process continues. Activation of the priority will start automatically after

launching the next dispenser loading cycle. This activity prevents excessive facility cooling.

Clock

The regulator has a clock powered by a special high-capacity condenser. After a power failure, the clock

continues to run for about two hours. After discharging the energy source, the time and date need resetting.

Time setting

Set the hour and minutes.

Date setting

The regulator requires the user to set the year, month and day of the month. Based on this data, it sets the day

of the week. The exact date is required only for proper operation of statistics and a correct archiving process.

Other functions control the device based on the day of the week.

Other

Language

In this option, the menu language and information available under the "info" button can be changed.

Display brightness

It is possible to adjust the backlight brightness. We recommend setting the optimum value for comfortable

operation. After about 3 minutes from the last operator's movement, the regulator will reduce the brightness by

50%.

Information about the regulator

This option provides a number of important pieces of information for over-the-phone support. The most

important information is the software version number and the circuit control type.

Memory card

Program no. 5

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The regulator is equipped with an SD card slot. In this option it reads basic information about the card: the amount of free space and total card capacity. Note: We are not responsible for any data loss on your memory card. We do not guarantee that the regulator

will work with all memory card models on the market. The regulator supports SD and SDHC up to 8GB capacity.

Archiving

The regulator stores the number of parameters with a frequency of one minute. The history of work is stored in

the internal memory of the regulator. The regulator stores the last 10 days. This data will be lost when the

regulator is not power supplied. Data recording on an SD card allows analyzing them later on a PC.

Service menu

After entering the SERVICE menu, the regulator displays a window to enter a 5-digit password. There are two

levels of permissions to change service settings which have different passwords. The boiler manufacturer's

password has the highest level as it gives access to all parameters of the regulator. The installation password

does not allow saving changes made to parameters of the BOILER submenu, but it is possible to read them.

After entering a special password, the user can reprogram the processor installed in the RUN-TIME MODULE

using an SD card.

BOILER

Minimum temperature

The boiler temperature decrease below the set value blocks the operation of the HW pump, the CH pump

(except when the mixing valve is installed), and the Buffer pump. The aim of this parameter is to protect the

boiler from dewing.

Maximum temperature

This parameter limits the upper temperature of the boiler. Exceeding this value exits the burning phase to feed

or stop the boiler (depending on other settings). The parameter value should take into account boiler inertia,

matching boiler output to installation demands, so that in the extreme situations, after turning off the burning

phase, the boiler temperature increase did not result in exceeding the boiler temperature approved by the

manufacturer (usually 95C).

Critical temperaturę of the boiler

Exceeding the critical temperature of the boiler will trigger the emergency heat discharge process. In that

situation, all pumps are turned off and the mixing valve is opened. The value of the parameter is selected based

on boiler inertia. The maximum temperature parameter and the critical temperature should be set to protect

the boiler against over-heating in extreme situations.

Return protection temperature

Based on the boiler temperature return sensor and the value of the described parameter, the regulator

protects the boiler return from dropping below the set temperature. The return protection function is achieved

by the mixing valve with the actuator. A 4-way valve is required. When the temperature is lower than the set

temperature, the regulator starts closing the valve, which increases the return temperature. This function

works only when the return sensor is connected. We recommend connecting the sensor when the hydraulic

system without the buffer was built. This is shown in Figure 5. Hydraulic installation diagram without a heat

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buffer. Connecting the sensor to the regulator when we turn on the buffer pump and the installation is made

based on Figure 4. Hydraulic installation diagram with a heat buffer does not affect the operation of the

equipment. However, it is possible to read the measured return temperature.

Boiler type

Boiler model selection sets the parameter ranges and the default settings in an optimal way for the product.

Pressing the DEFAULT SETTINGS function will bring back the regulator settings recommended by the boiler

manufacturer.

Burner

Prolonging the operation of the burner feeder

This parameter uses % to determine additional operational time of the burner feeder counted after the

dispenser feeder turns off. For example, if the dispenser feeder runs for 5 sec. and the parameter is set to 25%,

the burner feeder will run concurrently with the dispenser feeder and will run for 6.25 seconds, which is about

25% longer.

Emergency temperature of the feeder

The parameter protects the burner against fuel lighting near the area where the pipe is connected to the fuel

tank. There is a sensor that measures the temperature and when it detects that it is becoming higher than the

set temperature it starts the burner feeder to put fuel into the boiler.

Dispenser feeder capacity

To calculate the burner output and fuel consumption, the amount of pellets feed needs to be calculated. After

disconnecting the pipe that feeds the pellet to the burner, manually run the dispenser feeder and start the

timer. This way, pellets can be poured into a vessel for example for 10 minutes and the feeder can be stopped.

The collected amount of pellets is weighed and the result in kg is divided by 10 and introduced into the

regulator. The regulator requires inputting the weight of the poured fuel in kg/minute.

Fuel

The second parameter necessary to calculate power is the calorific value of fuel. There are 2 units to choose

from. Choose the one in which there is data from the fuel supplier (usually printed on the bag).

CH circuit

Mixer

At this point, parameters defining the operation of the mixing valve are collected. After activating the operation

with the valve, the regulator will adjust the controls to such a hydraulic system automatically changing the

temperature and installation protection functions.

Turn on the controls with the valve

If the circuit has a mixing valve with an actuator, check the mixer mounted option. If the installation does not

have a valve with an actuator, this must be set in this option.

Limiting temperature behind the valve

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For the underfloor installation, a value that is safe for this type of heating should be set, usually 55C. The valve

will close when the installation reaches the set temperature and when it continues to grow the regulator will

switch off the CH pump. For radiator heating, a maximum value needs to be set, i.e. 96C. For this setting, the

emergency valve will discharge the heat into the installation and the CH pump will not be blocked in the

installation protection function. Therefore, in a particular situation, the regulator will discharge the heat into

the installation as an emergency.

Minimum temperature behind a valve

The temperature behind the mixing valve, which will be maintained even when heat demand will be lower, can

be set. For example, the room temperature is reached, but we want to keep the warm floor effect, then by

setting, for example 35C, we feel comfort throughout the entire heating period.

Valve opening time

Enter the number of seconds specified on the valve actuator. For example, for a time of 2.5 minutes enter 150

seconds.

Reaction time adjustment

Adjustment of the mixing valve reaction time is necessary when the valve operates with high frequency (over-

regulation) or very slow. Generally, for a properly chosen valve, there is no need to change this parameter. The

default setting equals five and this is an average value. The operation of the valve can be slowed down by

changing the parameter to, e.g. 2. To make the reaction faster, we change the parameter to 7. The range is

from 1 up to 10.

Additional boiler temperature

Stable operation without closing the valve to protect the boiler requires a higher temperature in the boiler than

in the CH installation. The temperature in the boiler is determined as follows: required CH temperature +

parameter value. Note: This parameter changes the boiler temperature only when the mixing valve is active

(see Turn on valve control).

Circuit control

In this option, the Installer determines the method the user will use to set the heating temperature. The

following methods are available:

• Manual

• Thermostat

• Thermostat + external sensor

• Room sensor + external sensor

MANUAL

The heating temperature is set, i.e. the temperature of water in the CH installation. The user has no additional

control possibilities.

THERMOSTAT

The CH temperature is set by the user, but the user has an additional parameter to use - Heating temperature

decrease.

NOTE:

35

1. It is required to connect a room thermostat with a closing contact (e.g. AURATRON). The thermostat should

close the measuring line - room sensor input, for the temperature decrease time.

2. NO VOLTAGE MUST BE CONNECTED TO THE REGUALTOR'S MEASURING INPUT.

3. Use a thermostat with a potential-free relay output only. The regulator does not work with modulated output

thermostats. Most often, these are advanced thermostats with impulses of varied durations.

Thermostat + external

The user sets the room temperature. The menu has many options and the weather characteristics can be set. NOTES: 1. It is required to connect an external sensor (the sensor must be mounted on the north wall of the building) 2. All remarks from the THERMOSTAT section must be followed

Room sensor + external sensor

This configuration uses all the possibilities of the regulator and it is a full weather control. The user sets the

room temperature and the weekly heating program. After activating this point, the user menu changes.

Note:

1. It is required to mount the external sensor on the north wall of the building

2. It is required to mount the room sensor (do not mount near heat sources)

HW circuit

HW priority

HW priority means the HW heating needs to be turned off until the HW dispenser is heated up.

HW additional boiler temperature

The boiler temperature, during HW heating in the summer period and for the active HW priority, is determined

as follows: the value of a current parameter is added to the HW temperature set by the user. Setting a higher

value will reduce the dispenser heating time, but a too high boiler temperature can increase fuel consumption

and result in exceed the critical temperature in the boiler.

HW priority - time

If the HW dispenser is not heated up for the set time, the regulator will turn off the priority not to cool down the

CH installation too much. The priority will be turned off automatically in the next dispenser heating cycle.

Circulating pump

The goal of the HW circulating pump is to supply hot water to the tap. For large installations, the overall water

consumption decreases.

Pump activation

Once activated, the circulation pump is drawn on the screen with a color. It operates only when the HW heating

is set in the weekly program. Moreover, the pump operates in cycles; the operation time and the downtime are

described below.

Operation time

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The user needs to set a time for the pump to allow it to pump water through the piping system, so that after

turning on the tap hot water appears.

Downtime

The downtime should be as long as possible, but the water in the pipes cannot cool down too much. The user

should not feel uncomfortable when using HW.

HW rundown during summer

The pump loading the dispenser during SUMMER is delayed by this parameter. The purpose of this activity is to

discharge the boiler. After heating the dispenser to the desired temperature, the burner turns off and the

dispenser pump will work during rundown time in the summer.

Buffer pump

The regulator is prepared to work with the buffer. The documentation contains a hydraulic system diagram that

uses the buffer as a thermal energy store. If the control in such a system is to be correct, the Service must

activate buffer cooperation and set the remaining parameters correctly. A description of the available settings is

below.

Operation activation

Turning on the parameter is a piece of information for the regulator that the heat buffer is built in the hydraulic

system. In this system, the boiler loads the buffer to an appropriate temperature and then the accumulated

heat is used in the CH installation. This allows the most efficient use of fuel because these are the conditions in

which the greatest efficiency of the burner can be obtained. In this example, boiler control differs from

operating without the buffer. What is important, the boiler does not often start up and runs in long cycles,

mostly at maximum output. The boiler temperature is automatically set to a given value (maximum

temperature - 2°C) during buffer loading.

Important: If the system does not include the buffer, the parameter should be disabled.

Note: For operation with the heat buffer, it is recommended to use the PID DISABLED mode for the burner.

Upper temperature

The temperature decrease below the set value at the upper buffer sensor will trigger the buffer heating process.

The buffer pump will turn on when the temperature in the boiler will be higher than the minimum boiler

temperature and also higher than the measured temperature at the upper buffer sensor by at least 2C. This

prevents corrosion in the boiler as a result of dewing. On the other hand, the buffer is not cooled down by the

boiler when there is no appropriate temperature in the boiler.

Note: This setting is ignored after selecting the Automatic upper temperature option.

Lower temperature

If the lower buffer sensor measures the temperature that is higher than the set value, the buffer heating process

will be finished.

NOTE:

37

1. Lower temperature can be automatically reduced when the calculated value is too high. In this case, the

regulator will accept a value (maximum temperature - 5°C) as the lower temperature.

2. If the automatic upper temperature is turned on, the lower temperature principle is set as follows:

Tlower_automatic = Tupper_automatic + (Tlower - Tupper)

Operation modes

The buffer can be loaded only based on buffer sensors temperature, so-called continuous loading. Moreover, it

is possible to specify one time period in which buffer loading is possible. The buffer loading process will not be

triggered outside this period.

Continuous loading

Activation of this parameter results in cyclic buffer loading based on buffer sensors temperatures and lower and

upper temperature settings of the buffer.

Temporary loading

For this mode, the user must also set the time of two parameters, i.e. the beginning and the end of buffer

service. Between these hours, the buffer will be loaded the same way as it is loaded in the "continuous loading".

Buffer loading outside the set hours is blocked.

The beginning of service

Set the hour to begin the buffer loading service (see Operation modes).

The end of service

Set the hour to end the buffer loading service (see Operation modes).

Minimum temperature of pumps

In a situation when the upper buffer sensor measures a temperature that is lower than the set temperature, the

CH pump will be blocked. This eliminates needless consumption of electric energy if the buffer is discharged.

Automatic upper temperature

When this option is activated, the regulator will automatically determine the upper temperature parameter.

The device will be set to the desired temperature for the CH circuit. It will also determine a new boiler operation

temperature - it will amount to (maximum temperature -2°C). Thus, setting the value (Upper temperature) is

ignored. If the automatic .... option is disabled - the regulator will operate according to the Upper temperature

parameter setting.

Default settings

After choosing the DEFAULT SETTINGS option, the regulator goes back to factory parameters. The scope of

settings displayed using this command depends on granted authorization.

If the user selects an option, user settings will be displayed to the defaults only.

When the Installer selects the factory settings after entering the SERVICE option (after providing the installer

password), the regulator will show a greater extent of settings. The parameters from the user menu and the

service menu will be brought back except for submenu parameters: SERVICE-> BOILER.

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All possible regulator settings will be restored to factory settings after entering the SERVICE option, entering

the heating device MANUFACTURER'S password and choosing the DEFAULT SETTINGS.