Prozeda grandis 650 HK Function Manual

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Heating circuit and solar controller

grandis 650 HK

Menus and controller functions

English version of original German installation and operating instructions

Version: 1.2

January 2016

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This manual is designed to help you use the controller properly, safely and economically.

This manual represents only a part of the installation and operating instructions. Read the document before making any settings on the controller. Installation and operating instructions.

Target group

This manual is addressed to all persons who carry out any of the following tasks:

• Installing the controller

• Connecting the controller

• Putting the controller into operation

• Setting the controller

• Maintaining the solar power system

• Eliminating faults on the controller and the solar power system

• Disposing of the controller

These persons must have the following knowledge and skills:

• Knowledge about establishing electrical connections

• Knowledge about the hydraulic operation of solar power systems

• Knowledge of the applicable regulations at the point of use and the ability to apply

them

These persons must have read and understood the contents of this manual.

Availability

This manual is part of the controller. Always keep it in an easily accessible location. Include this manual with the controller should the controller change hands.

If this manual gets lost or becomes unusable, you can contact the manufacturer for a new copy.

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DANGER

WARNI

CAUTION

ATTENTION

Style conventions used in the text

Specific style conventions are assigned to different elements in the manual. This makes it easy to recognise the type of text concerned:

Standard text, "Menu", "Menu item", "Button designations",

• lists and  actions.

Notes accompanied by this symbol contain information about how to operate the controller economically.

Style conventions for hazard warnings

This manual makes reference to the following categories of hazard warnings:

Information or instructions accompanied by the word DANGER provide a warning about a hazardous situation that will lead to fatal or serious injuries.

Style conventions for warnings of damage to property or the environment

Information or instructions accompanied by the word WARNING provide a warning about a hazardous situation that may possibly lead to fatal or serious injuries.

Information or instructions accompanied by the word CAUTION provide a warning about a situation that can lead to minor or moderate injuries.

Information and instructions of this kind provide a warning about a situation that can lead to damage to property or the environment.

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Table of contents

1 Displaying and changing the values in the menus ................................................. 6

1.1 Displaying values in the "Info" menu ............................................................................................. 6

1.2 Displaying and changing values in the "Program" menu ...................................................... 13

1.3 Controlling switching outputs in the "Manual mode" menu ............................................... 19

1.4 Displaying and changing values in the "Basic settings" menu ............................................ 20

2 "Heating circuit" function ...................................................................................... 28

2.1 Mixed heating circuit ........................................................................................................................ 28

2.2 Unmixed heating circuit .................................................................................................................. 29

2.3 Switching the heating circuit pumps off and on ...................................................................... 30

2.4 Hot water .............................................................................................................................................. 30

2.5 Putting the heating circuits into operation ............................................................................... 31

2.6 Screed heating .................................................................................................................................... 31

2.7 Room sensor (RS) ................................................................................................................................ 32

3 “Solar” function...................................................................................................... 33

3.1 Setting the charging method ......................................................................................................... 33

3.2 Setting the "Storage tank priority" function .............................................................................. 33

3.3 Setting the "Parallel charging" function ...................................................................................... 34

3.4 Setting the pump control system ................................................................................................. 35

3.5 Setting the "Tube collector" function .......................................................................................... 37

3.6 Bypass function / external heat exchanger ................................................................................ 37

4 Setting protective functions .................................................................................. 38

4.1 Setting the "Collector protection" function ............................................................................... 38

4.2 "Storage tank protection" function .............................................................................................. 38

4.3 "System protection" function ......................................................................................................... 39

4.4 "Pump protection" function............................................................................................................ 39

4.5 "Heat exchanger protection" function ........................................................................................ 39

4.6 Setting the "Recooling" function ................................................................................................... 39

4.7 Setting the "Drain-back" function ................................................................................................. 40

4.8 Setting the "Anti-freeze" function ................................................................................................. 41

5 Measuring the energy yield ................................................................................... 41

5.1 DFG (flow sensor) ............................................................................................................................... 42

5.2 VFS (vortex flow sensor) ................................................................................................................... 42

5.3 DFA (flow indicator)........................................................................................................................... 42

6 Setting multi-function controllers (MFC) .............................................................. 43

6.1 Setting the "Cooling" function ....................................................................................................... 43

6.2 Setting the "Heating" function ....................................................................................................... 44

6.3 Setting the "Temperature difference controller" function .................................................... 44

6.4 Setting the "Threshold value switch" function ......................................................................... 45

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Setting the "Return line boost" function .................................................................................... 45

6.5

6.6 Setting the "Wood-fired boiler" function ................................................................................... 45

6.7 Setting the "Circulation" function ................................................................................................. 45

6.8 Setting the "Alarm" function .......................................................................................................... 46

6.9 Setting the "Timer" function ........................................................................................................... 46

6.10 Setting the "HW reheating" function ........................................................................................... 46

6.11 Setting the "Temperature range" function ................................................................................ 47

6.12 Setting the "Modulation" function ............................................................................................... 47

6.13 Setting the "Cascade" function ...................................................................................................... 47

6.14 Setting the "Yield" function ............................................................................................................ 48

6.15 Setting the "Mixer" function (only MFC 1) .................................................................................. 48

6.16 Setting the "Valve" function (only MFC 2) .................................................................................. 49

6.17 Setting the "Storage tank cooling" function (only MFC 3) .................................................... 49

6.18 Setting the logical link ...................................................................................................................... 50

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Displaying and changing the values in the menus

1 Displaying and changing the values in the

menus

This chapter provides an overview of the menus and menu items. Menu items for the first menu level are displayed in bold. Menu items for the second menu level are displayed beneath in standard text.

1.1 Displaying values in the "Info" menu

The "Info" menu allows you to display measurement and output values and status messages.

Depending on which additional functions have been activated, not all values will necessarily be displayed.

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Displaying and changing the values in the menus

Pos. Description

1 Current measured value

2 Display of the minimum value reached

so far

3 Display of the maximum value reached so far

4 Reset the minimum and maximum values to the current measurement value

Solar circuit

This menu allows you to display measurement values in the solar circuit and to reset them to the current measurement value. In this case the terminal designation precedes the designation for the sensor (e. g. S01: Collector). Whenever you activate a menu item, the "Measurement value" display screen will be displayed.

To reset a value, proceed as follows:

 Select .

The OK symbol will be displayed.

 Press to confirm.

The value will be reset.

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Displaying and changing the values in the menus

Item Description

1 Room temperatures 1 to 3 for each heating circuit. Room actuators are shown as a

switch symbol.

2 Assignment to the activated heating circuits

Heating circuit

In this menu you can view the measured values (1 and 2) in the heating circuits. In this case the terminal designation precedes the sensor designation (e.g. S10: Outdoor temperature). When you activate a menu item, the min and max values previously obtained will appear and you can reset to the current measured value.

Room temperature

This menu is visible only when you have activated at least one room user terminal (navo

400), room sensor or room actuator.

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Displaying and changing the values in the menus

Item Description

1 Active menu (here: "Warmer/Colder" menu)

2 Room temperature. This stands for the current temperature in the room where the room

user terminal is located.

It appears only when navo 400 is connect

ed.

3 Outdoor temperature

4 Day and time

5 Heating circuit designation (here: heating circuit on "Ground level")

6 Menu designation (here: "Warmer/Colder" menu)

7 Target temperature. This can be changed with the button

or .

correction will appear in the range

10 to +10.

8 Current operating status (here: "Auto")

"Comfort" menu

In this menu you can enter changes. Select heating functions are clearly presented and the parameters can be changed quickly and conveniently.

Use the buttons or to select the required menu.

Use the buttons or to increase or decrease the value in steps.

The change will be adopted immediately.

The "Comfort" menu can be closed by pressing the button in the "Warmer/Colder" menu (far left) and confirming the prompt.

If a room thermostat or sensor is set as the room sensor, the warmer/colder supply line

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Displaying and changing the values in the menus

"Comfort" menu

Symbol

Description

"Warmer/Colder" menu

"Party" menu

"Holiday" menu

"Hot water" menu

"Heating circuits" menu

The following menu symbols appear in the top part of the display:

Here you can increase or reduce the room temperature. The supply line temperature of the related heating circuit (5) will then be corrected by the value set here.

Here you can enter the number of hours for which the heating system will adopt or remain in the "Manual day" operating mode. This applies only for the selected heating circuit (5).

Here you can enter the number of days on which you will be absent. The heating circuit will adopt the "Manual night" mode for the number of days selected here. Then the heating circuit will return to the previously set operating mode. This applies only for the selected heating circuit (5).

Here you can increase or reduce the temperature of the hot water. This applies for all heating circuits. Reducing the temperature can save energy when only little or no hot water is required. Increasing the temperature is useful when you need more hot water.

Here you can change the heating circuit if more heating circuits are provided and activated.

The "Comfort" menu can be set as the idle screen (standard screen) at:

• Program/Idle screen/Comfort menu.

MFC 1-6

This menu allows you to display and reset measurement values of the multi-function controller. In this case the terminal designation precedes the designation for the sensor (e.g. S1: Source). As in the "Solar circuit" menu item, you can also reset the minimum and maximum values here.

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Displaying and changing the values in the menus

Menu item

Description

Solar The following status messages can be displayed:

– Fault

Flow Only if a flow fault occurs.

Heating circuit

The following status messages can be displayed:

– Chimney sweep

- time remaining.

MFC 1

–6

The following status messages can be displayed:

– Off

stems with two storage tanks, the tanks are denoted by the digits "1" and "2"

Status

This menu allows you to display the following status messages:

– Off – Charging priority 1/2 – Collector protection – System protection – Recooling – Anti-freeze – Waiting time – Tube collector – Drain-back – Parallel charging

– Off/Summer – Day – Night – Party – Holiday – Eco mode active

– On

Efficiency

This menu allows you to display the following balance values and, if necessary, reset them:

• Operating hours (resetting is possible)

• Output (resetting is possible)

• Flow

For sy respectively.

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Displaying and changing the values in the menus

Overview

This menu allows you to display an overview of all outputs (2) and inputs (1). No value will be displayed if a sensor is not connected. If an arrow symbol is shown (3), you can use the buttons or to display the other values.

The HE outputs are displayed in the bottom part (4).

If flex 400 modules are connected, a menu item with an overview of the inputs and outputs will appear for each of these modules.

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Displaying and changing the values in the menus

WARNING

ATT

ENTION

Menu item

Description

Storage tank 1/2

Storage tank max

Required maximum temperature

dTon Switch

on difference

dToff Switch

-off difference

Storage tank act

"Storage tank priority" function:

Activate or deactivate the storage tank with priority 2

Parallel charging

Temperature difference for the "Parallel charging" function

Speed control

Minim

um pump output with speed control

100% = Speed control off

Target temp

Required temperature for the "Target temperature" charging

method

Radiation

Value at which the "Tube collector" or "Drain

back" (radiation

controlled) functions start.

Tube start tim

e Time at which the "Tube collector" or "Drain

back" (time

controlled)

functions start

Tube stop time

Time at which the "Tube collector" or "Drain

back" (time

controlled)

functions stop

1.2 Displaying and changing values in the "Program"

The "Program" menu allows you to display and change the parameters.

Risk of scalding from hot water as a result of incorrect settings.

 Exercise particular care when configuring settings on the controller.  Take water samples after completion of the settings and check them

using a suitable thermometer.

Risk of system malfunctions due to incorrect settings.

 Set parameters only if you know their effects.

Solar circuit

Specify the storage tank priority

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Displaying and changing the values in the menus

Menu item

Description

Here you ca

n specify a designation for the heating circuit.

Ceiling heating system, Top floor, Flat, Building.

Number

You can also issue a

number. This makes sense when there are

several heating circuits e.g. on ground level.

Operating mode

Automatic

The control system runs by time program on the basis of the set

heating curves and in accordance with the outdoor temperature.

Manual day

The control system runs continuously in normal heating mode.

Manual night

The control system runs continuously in reduced mode.

Off

/Summer

The heating circuits are switched off. The mixers close and remain

in this position. The "Anti

freeze" function rema

ins active.

Party The heating circuit runs in "Manual day" mode for the duration of

the value set here.

Holiday

The heating circuit runs in "Manual night" mode up until the date

operati

ng mode when the selected date has elapsed.

Warmer

Colder/Room

The setpoint temperature for the supply line is changed by the

required room temperature directly her

Correction 1

The setpoint temperature for the supply line is reduced or

increased by the value set here.

Correction 2

Second correction value for the supply line setpoint temperature.

Positive values will increase the setpoint temperature.

Week over

view Complete week overview of the set time window.

Reduction windows 1

–7

Here you can assign the 2 preset corrections and the "Off" mode to

circuit will run in automatic mode.

Mo–Fr Here you c

an select the week

days on which you want the

In this example the days selected are: Mo, Tu, We, Th, Fr.

:00–06

:00 Here you can select the start and stop times for the

reduction

In this example the times are

: Start:

:00, Stop:

:00

Heating circuit 1-4

The following terms are available: Heating circuit, Basement, Ground level, Upper level, Floor, Radiator, Wall heating system,

selected here. The heating circuit will return to the previously set

set-point

value set here. If a navo 400 room user terminal is connected, you can enter the

a specific time window. Outside the time window, the heating

programmed time window to be active.

windows.

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Displaying and changing the values in the menus

Pos. Description

1 Week days

2 Supply line correction 1, here: reducti

on of -10K

3 Supply line correction 2, here: reduction of

-5K

4 Normal heating mode (automatic mode) outside the time window

5 Day hours

Time window adjustment - heating system

For each time window you can select one of the preset SL corrections or "Off" mode. In this way you can implement various reductions or increases as part of the day's program. In the example below, the heating circuit will be operated with SL correction 1 from Mo to Fr 22:00h. Outside the time window, the heating circuit will run in automatic mode.

Week overview

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Displaying and changing the values in the menus

Menu item

Description

Function

Switching the "ECO mode" function on or off

be reduced by the respective lowering values.

Heating circuit lower

value

The request temperature for the heating circuit

is lowered by the

value set here.

HW lowering value

The request temperature for the hot water processing is lowered by

the value set here.

Time window 1

–3

Mo–Fr Here you can select the week

days on wh

ich you want the

In this example the days selected are: Mo, Tu, We, Th, Fr.

06:00-22:00 Here you can select the start and stop times for the time window.

In this example the times are: Start: 06:00, Stop: 22:00

Menu item

Description

Start setpoint value

If the process water temperature drops below the value set here,

request will be switched on.

Stop setpoint value

If the process water te

mperature rises above the value set here, the

hot water processing function will be switched off.

Priority

Here you can define the response of the heating circuits during the

setpoint temperature for the hot water

processing is reached.

Charging time

(alternating mode)

Here you can define for how long the hot water processing has

priority during alternating mode.

ECO mode

This function can be switched on or off for each heating circuit and for the hot water request. Within the time window, the request values for the reheating will

Outside the time window the function is not active.

programmed time window to be active.

Hot water

the hot water processing function will become active and the boiler

hot water processing. Off: The heating circuits will continue to run during the hot water processing. On: When the hot water processing is active, the heating circuits will be switched off and the mixers will be closed. Alternate: When the hot water processing is active, the storage tank will be given charging priority during the set "Charging time". When the charging time comes to an end, the hot water processing will be switched off for the "Waiting time" and the heating circuits will be activated again. This alternation will contine until the

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Menu item

Description

Waiting time (alternating

mode)

Here you can define for how long the hot water processing must

remain

in waiting mode.

Time window 1

–3

Mo–Fr Here you can select the week

days on which you want the

In this example the days selected are: Mo, Tu, We, Th, Fr.

06:00–22:00 Here you can select the start and stop times for

the time window.

In this example the times are: Start: 06:00, Stop: 22:00

Menu item

Description

Function

Switch the "Chimney sweep" function on or off

be activated. The m

ixers move to position "Open".

Runtime

Here you can set the runtime for the "Chimney sweep" function.

the previously selected operating mode.

Menu item

Description

Target temp

Switch

on temperature

Hysteresis

Temperature range

Waiting time

Duration of waiting time for the "Cascade" function

Tmax sink

Maximum temperature of the sink for the "Temperature

difference

controller"

and “Wood

fired boiler” functions

Diff. controller max

Switch

on difference for the "Temperature difference controller"

function

Tmin source

Minimum temperature of the source for the "Temperature

difference controller" and “Wood

fired boiler” functions

Diff. controller min

Switch

off difference for the "Temperature

difference controller"

function

Chimney sweep

MFC 1-6

Displaying and changing the values in the menus

programmed time window to be active.

The night heating mode will be started and the heating pumps will

When this time has elapsed, the system will switch automatically to

Different menu points can be displayed in this menu depending on the functions selected for the multi-function controller.

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Displaying and changing the values in the menus

Menu item

Description

Tlimit min.

Lower limit of a temperature range

range.

Tlimit max.

Upper limit of a temperature range

range.

Date Here you can enter the perio

d (start date and end date) in which

the start date, the end date will be set in the following year.

Time 1

–

3: Start

Start time for time wi

ndows 1

-3:

specify the start times for time windows 2 and 3.

Time 1

–

3: Stop

Stop time for time windows 1

-3.

specify the sto

p times for time windows 2 and 3.

Menu item

Description

Idle screen

SD card on/off

Deactivate microSD card.

progress.

Warning signal

Switch the acoustic warning signal on or off when there are faults

Time Current time

Date Current

date

Summer time

Automatic changeover between summer time and winter time

Firmware

Display of the current firmware version

With this value you can set the lower limit of a temperature range. The multi-function controller switches only within this temperature

With this value you can set the upper limit of a temperature range. The multi-function controller switches only within this temperature

you want the multi-function controller be active. The year is not entered. If you enter an end date which precedes

When the start time for time window 1 has been specified, you can

When the stop time for time window 1 has been specified, you can

System

Here you can define to which display the controller will switch if no button is pressed for one minute. Heating circuit: An overview of the measured values in the heating circuit Solar circuit: An overview of the measured values in the solar circuit Comfort menu: In the "Comfort" menu you can enter changes

This menu item will be displayed only if a microSD card has been inserted. When it is inserted, the microSD card is automatically activated. An SD card symbol in the "Info" menu indicates that data logging is in

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Displaying and changing the values in the menus

ATTENTION

Menu item

Description

Output R0

–R7, HE1-HE3 Switch switching output R0

–R7, HE1-HE3 on o

r off manually.

switching outputs in use will be displayed.

Delayed off

When the menu is closed, the controller will switch to automatic

pump symbol.

1.3 Controlling switching outputs in the "Manual mode"

The "Manual mode" menu allows the controller's switching outputs to be turned on and off for test purposes. To enable the controller to run in automatic mode again, you have to exit manual mode after completion of setting tasks.

Risk of system malfunctions due to incorrect settings.

 Make sure that only specialist personnel ever make any changes to the

values in this menu.

Depending on the hydraulic layout which has been set, only the

mode after the delayed off has elapsed. All outputs in manual mode remain active during the delayed off period. In the "Info" menu, a hand symbol appears instead of the

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Displaying and changing the values in the menus

ATTENTION

1.4 Displaying and changing values in the "Basic

settings" menu

The "Basic settings" menu allows you to display and change basic settings.

Risk of system malfunctions due to incorrect settings.

 Make sure that users use only user mode.  Make sure that the values are only ever changed by specialist

personnel.

There are two operating modes:

• User mode

• Editing mode

In user mode you can display values in this menu, but you cannot make any changes to them. If user mode is activated, the menu symbol is displayed in the form of a "locked" symbol.

In editing mode you can display and make changes to values in this menu. If editing mode is activated, the menu symbol is displayed in the form of an "unlocked" symbol. Only specialist personnel are permitted to activate editing mode.

 To activate editing mode, press the , and buttons simultaneously.

The menu symbol will be displayed in the form of an "unlocked" symbol. Editing mode will be active.

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Menu item

Description

Hydraulic layout

Set the system type.

and additional functions will be reset.

Speed

With these parameters you can influence the speed control.

Please

change

the preset

values

only if necessary.

Charging break

"Storage tank priority" function: Brea

k between charging the

Multi-tank systems only

Priority

"Storage tank priority" function: Order in which

storage tank 1 and

: Storage tank 2

Parallel cha

rging Switch the "Parallel charging" function on or off

Charging method

You can choose between the following charging methods:

– Target temperature.

Collector prot

Function

Switch the "Collector protection" function on

or off

Temperature

Temperature at which the "Collector protection" function becomes

active

Drain-back (Only if collector protection is off)

Function

Switch on the "Drain

back" function in the required control type

Switch off the "Drain

back" function.

Fill time

Fill time for the "Drain

back" function

Min runtime

This parameter is used to set a minimum pump runtime.

Solar circuit

Displaying and changing the values in the menus

Layout: abc.x a: Number of storage tanks b: Number of collectors c: Extensions

(0=None, 1=Heat exchanger, 2=Bypass) x: Variant When the hydraulic layout is changed, all the preset parameters

P Prim: P (proportional) component gain, pump output in % per Kelvin. I-Time Prim: Time factor for correction by the I (integral action) component in seconds.

storage tanks

storage tank 2 are charged. Only for multi-tank systems.

Layout: ab a: Storage tank 1

– deltaT (temperature difference)

(temperature difference/radiation-controlled).

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Displaying and changing the values in the menus

Menu item

Description

Condition time

This parameter is used to set how long the conditions for switching

on an

d off must be active in order to take effect.

Recooling

Function

Switch the "Recooling" function on or off

Recooling temp

The temperature to which the storage tank is recooled after the

"Collector protection" function was active

Tube collector

Funct

ion Switch on the "Tube collector" function in the required control type

Switch off the "Tube collector" function.

Pump runtime

Pump runtime of the "Tube collector" function

Interva

l Interval time between the pump runtimes

Time Interval period for control via temperature change

deltaT

Temperature for control via temperature change

Anti-freeze

Function

Switch the "Anti

freeze" function on or off

Sensor

Select the sensor input

emperature

Temperature at which the "Anti

freeze" function becomes active

System protection

Temperature

Temperature at which the "System protection" function becomes

active

Pump type R1/R2/R3

You can choose between the following pump types at the R1/R2

/R3

– PWM inverted.

(time-controlled/control via temperature change/radiationcontrolled).

switching output: – 230 V block modulation – Analog (R1 and R2 only) – PWM

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Menu item

Description

Heating circuits 1

-4*

For more settings for the individual heating circuits, see below this table.

Heating curve

Lin

ear The heating circuit control of the two heating circuits is based on a linear

calculation.

Curve set

The heating circuit control of the two heating circuits is based on a

curve fr

om a set of curves

starting on page

29.

Multi-room control

If you use more than one room sensor, you can implement multi

room

Room influence

Here you can define the influencing factor of the room sensors.

temperature correction will be calculated accordingly.

OT smoothing

Here you can set a value in hours for the smoothing of the outdoor

type 70, 55, 40): 24h

dt On heat

If the temperature at the middle of

the storage tank lies below the

be considered.

dt Off heat

If the temperatu

re at the middle of the storage tank lies above the

the reheating will be switched off.

Request

Switch the "Request" function on or off

function controller will become available on R0.

Min runtime

This parameter is used to set a minimum time during which the request

will remain active.

Heating circuit

Displaying and changing the values in the menus

heating curve. Details can be found in the section Selecting the heating

control with this function. Comfort will be increased and energy consumption will be optimised. You can choose between the following room analysis methods:

- Min: The lowest temperature of all active sensors is decisive

- Max: The highest temperature of all active sensors is decisive

- Average: The average temperature of all active sensors is decisive

- Switch: The heating circuit will be switched off when the room

setpoint temperature is exceeded at all active sensors

You can chooce between low, medium and high and the supply line

tempertaure according to the building's insulation. This makes allowance for the building's inertia. Examples: Poorly insulated building (e.g. an old building with no insulation): 4h. A very well insulated building (e.g. a new building, a KfW efficiency house

calculated supply line setpoint value plus "dt On heat", the reheating by boiler will be switched on. If there are two heating circuits, the higher supply line setpoint value will

calculated supply line setpoint value plus "dt On heat" plus "dt Off heat",

Here you can deactivate the boiler function. In this case the multi-

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Displaying and changing the values in the menus

Menu item

Description

Delayed off

The request remains active during the delayed off period.

Reheat

sensor 2

Sensor for switching off the burner request. This sensor is freely

function automatically uses the "Middle of storage tank" sensor.

Hot water

Function

Switch the "

Hot water" function on or off

Sensor ST top

Select the sensor input for the storage tank top

HW switch

off sensor

Sensor for switching off the burner request. This sensor is freely

function automatically uses the "Top of storage tank" sensor.

Anti-freeze

This function is active at all times. If the outdoor temperature drops

happens irrespective of the

selected operating mode.

Screed heating

Switching the "Screed heating" function on or off.

Menu item

Description

Heating circuit

- Unmixed:

The "Unmixed heating circuit" is switched on

Mixed:

The "Mixed heating circuit" is switched on

Assignment

The outputs and the sensors of every heat

ing circuit can be assigned

Flex 1 / 2 / 3 / 4: HCs in the flex

modules 1, 2, 3 or 4

Heating curve 1

-4

Here you can set either the linear heating curve or the h

eating curve

curve" menu point. You can set the following parameters:

Linear

Curve set

assignable. A message will appear if the sensor is not connected. The reheating

below the threshold set here, the heating circuits will be activated. This

Here you can start a defined program for heating and cooling the screed. You can choose between the following modes:

- Auto: Screed heating in automatic mode

- Hold: Holding the maximum value for the set "Duration max value"

- Cool down: Cooling down according to profile, beginning with the 1st

cool down step

Do not start the program until all the parameters have been set. Subsequent parameter changes will not take effect until the function is restarted.

* Heating circuits 1-4

internal or to the external flex-modules. Internal 1 / 2: the integrated HCs of the controller

selected from the set of curves, depending on the setting for the "Heating

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Displaying and changing the values in the menus

Menu item

Description

Switch

off day

off.)

Switch

off day

Switch

off night

above this value, the heating will be switched off.)

Switch

off night

Supply line max limit

(Maximum supply line temperature)

Supply

line max

limit

Supply line min limit

(Minimum supply line temperature)

Supply line min

limit

Outdoor temp max

Steepness

Outdoor temp min

Supply line temp max

Supply line temp min

Mixer 1

-4

Mixer type

Mixer with 230V or analog actuation

ttings for mixer

Total actuating time:

Time taken by the mixer from the position "Open"

actuated.

Settings for mixer

P component:

Influences how strongly the mixer reacts to

a deviation

Heating circuit assignment "Internal 2": HE1

Room sensor 1

-3

Here you can activate up to three room user terminals, room sensors or

input to which they are connected.

(If the average outdoor temperature during the day lies above this value, the heating will be switched

(If the average outdoor temperature in the night lies

with 230V actuation

with analog actuation

to the position "Closed". Actuating time: Here you can set how long the mixer is actuated when the heating circuit actual value deviates from the supply line setpoint value. The deviation is entered in seconds per Kelvin. Cycle time: Here you can enter the time interval in which the mixer is

from the supply line setpoint value. I component: Influences how strongly the mixer reacts to a lasting deviation from the supply line setpoint value. Cycle time: Here you can enter the time interval in which the mixer is actuated. Output assignment: Heating circuit assignment "Internal 1": HE2

room actuators. You can choose between the following types:

- navo 400: Room user terminals with room temperature sensor. Is possible and recommended only as room sensor 1.

- Room sensor: Commercially available room sensor with PT1000 sensor

- Room actuator: Commercially available room actuator with potential-

free output For room sensors and room actuators you must assign another sensor

Page 26

Displaying and changing the values in the menus

Menu item

Description

Measurement method

Activate yield measurement with the preferred measurement method.

circuit)

Pulse value

Pulse value for the "DFG" measurement method

VFS type

Select type for the "VFS" measurement

method.

DFA Flow rate for the "DFA" measurement method.

Unit: Litres per minute

Glycol type

You can choose between the following glycol types for the coolant:

– none (if you use on

ly water)

Glycol percentage

Mixing ratio for the coolant

Menu item

Description

Function

Here you can switch on the MFC in the following functions:

– Storage tank cooling (only MFC 3).

Source sensor

Select the sensor input for the s

ource

Yield measurement

You can choose between the following measurement methods: – DFG (flow sensor) – VFS (vortex flow sensor) – DFA (flow indicator –only for yield measurement 1 in the solar

– Anro – Ilexan EG/E/P – Antifrogen L/N – Tyfocor L5.5 – Dowcal 10/20/N.

MFC 1-6

– Cooling – Heating – Difference controller – Threshold value – Return line boost – Wood-fired boiler – Circulation temp. – Circulation time – Alarm – Timer – HW reheating – Temperature range – Modulation – Cascade – Yield – Mixer (only MFC 1) – Valve (only MFC 2)

Page 27

Menu item

Description

Sink sensor

Select the sensor input for the sink

Output

Select the output of the MFC

Speed

"Wood

fired boiler", “Return line boost” and “Wood

fired boiler”

100% = Speed control off

Delayed off

The switching output remains active during the delayed off period.

The delayed off is active irrespective of all trip conditions.

Runtime

Duration of runtime for following functions:

– "Solar redundancy".

Waiting time

Duration of waiting time for the "Time

controlled circulation" function

Link Logical link from the output to the other outputs with AND/OR logic.

page 29.

Menu item

Description

Load language

Change the language

Parameter

Backup parameters from controller to microSD card.

inserted.

Generate record

The current settings and parameters will be saved in a text file to

inserted.

Factory settings

Load factory settings

Firmware update

Carry out a firmware update.

inserted. Only the firmware files will be displayed.

Number Flex I/O

If additional flex modules are connected, the number must be

stated here.

System

Displaying and changing the values in the menus

functions: Minimum pump output with speed control.

You can set the delayed off period here. The setting range is 0–600 sec.

– "Time-controlled circulation" – "Solar boost"

Details can be found in the section Setting the logical link starting on

Load parameters from microSD card to the controller. This menu item will be displayed only if a microSD card has been

the microSD card. This menu item will be displayed only if a microSD card has been

This menu item will be displayed only if a microSD card has been

Page 28

"Heating circuit" function

2 "Heating circuit" function

The device can be used to control up to two heating circuits on the basis of the outdoor temperature. These circuits can be mixed or unmixed. You can define separate control characteristics for each heating circuit.

2.1 Mixed heating circuit

The control characteristics described in the following can be configured only in the "Basic settings" menu.

With this function, the control system adjusts to the setpoint temperature for the supply line by actuating the heating circuit pump and the heating circuit mixer according to the outdoor temperature development.

You can choose between two settings:

• Linear heating curve

• Heating curve from a set of curves.

Defining the linear heating curve

The heating curve (thick line) is defined by two vertexes. The first or upper vertex is formed from the parameters "Supply line temperature max" and "Outdoor temperature min". The second or lower vertex is formed from the parameters "Supply line temperature min" and "Outdoor temperature max". The parameters "Supply line max limit" and "Supply line min limit" are used as absolute limits for the supply line setpoint temperatures of the upper and lower heating circuits. You can use the parameters "Switch-off day" and "Switch-off night" to define the outdoor temperature at which the heating circuits are switched off if exceeded.

Page 29

"Heating circuit" function

control and mixer control.

Selecting the heating curve from a set of curves

Assuming a desired room temperature of 20 °C, a corresponding supply line setpoint temperature is derived from the selected heating curve and the outdoor temperature development. The parameters "Supply line max limit" and "Supply line min limit" are used as absolute limits for the supply line setpoint temperatures of the upper and lower heating circuits. You can use the parameters "Switch-off day" and "Switch-off night" to define the outdoor temperature at which the heating circuits are switched off if exceeded.

The example graphic shows that when curve 1 (yellow) is selected and the outdoor temperature is -15 °C, the supply line setpoint temperature will be 60 °C.

2.2 Unmixed heating circuit

The heat source of the heating circuit (middle of storage tank) will be adjusted to the corresponding supply line setpoint temperature on the basis of the configured settings (linear heating curve/selection from a set of curves) according to the development of the outdoor temperature.

When the heating circuit pump is activated, the requested temperature of the heat source (middle of storage tank) goes directly into the heating circuit without

In the "Program" menu you can use the parameters "Warmer-Colder" and "Reduction temperature" to manually influence the supply line setpoint temperatures of the heating circuits. The "Warmer-Colder" parameter produces a general increase or reduction of the supply line setpoint temperature. The "Reduction temperature" indicates by how many

Page 30

"Heating circuit" function

Kelvin the supply line setpoint temperature will be lowered in reduction mode, i.e. outside the active time windows.

2.3 Switching the heating circuit pumps off and on

Heating circuit pumps are switched off in the following cases:

• The value set for "Switch-off day" in the operating modes "Automatic" or "Manual day"

for the respective heating circuit is exceeded.

• The value set for "Switch-off night" in the reduction mode for the respective heating

circuit is exceeded.

• The value set for "Supply line max limit" plus 5 K control bandwidth is exceeded (only

in the mixed heating circuit).

• The "HW priority" function is switched on and the "HW reheating" function is active.

Heating circuit pumps are switched on again in the following cases:

• The outdoor temperature drops below the outdoor temperature set in the respective

operating mode of the heating circuit by more than 1 K.

• The supply line temperature drops below the set supply line limit temperature by more

than 1 K.

• The "HW reheating" function is no longer active.

2.4 Hot water

If the temperature at the top of the storage tank lies below the value set for "Start setpoint value", the reheating by boiler will be switched on.

If the temperature at the top of the storage tank lies above the value set for "Stop setpoint value", the reheating by boiler will be switched off.

If the "HW priority" function is switched on, the heating circuit pumps will be switched off and the mixers will be closed during the HW reheating.

You can also switch on the "HW reheating" function by MFC. This MFC switches in parallel to the "Hot water" function and has no further parameters.

Page 31

"Heating circuit" function

the selected solar functions.

When you switch off the heating circuit (e.g.

via the "Program/Operati

changes to take effect.

2.5 Putting the heating circuits into operation

More or fewer heating circuit functions are available depending on the scope of

The putting into operation of the heating circuit 1 as a mixed heating circuit will be described by way of example.

 Select the "Basic settings" menu.  Select the "Heating circuit" menu point.  Select the "Heating circuit 1" menu point.  Select the "Mixed" menu point.

The OK symbol will be displayed and will flash.

 To confirm the entry, select .

The value "Mixed" will be indicated for the "Heating circuit 1" menu point.

The heating circuit is thus activated as a mixed heating circuit. All related switching outputs and sensor inputs are now assigned and will be actuated or evaluated accordingly by the controller. Further details can be found in the document Hydraulic layouts.

mode" menu point), the supply line setpoint value will be set to 11 °C. When you switch on the heating circuit again, the supply line setpoint value will be reset without delay to the regular working value.

2.6 Screed heating

You can activate the function when all the relevant parameters have been set. If you change any parameters subsequently, you must restart the function for the

Here you can start a defined program for heating and cooling the screed. You can choose between all mixed heating circuits. All other heating circuit functions are deactivated during screed heating.

When the heating and cooling down have ended, the control system will be reset to the previously selected mode. If there is a power failure, the function will be maintained and will continue from the point of disconnection.

A step pattern is defined using a start temperature and maximum temperature, step duration and increment, and holding duration of the maximum value.

Page 32

"Heating circuit" function

Max. temp.

Duration Holding

°C

Start temp.

The number of steps is calculated from the difference between the start temperature and the maximum temperature and from the increment.

2.7 Room sensor (RS)

You can connect up to 3 room sensors per heating circuit. The navo 400 room user terminal, which acts as both a room sensor and remote control, can be connected respectively as room sensor 1 via the bus.

Otherwise you can connect commercially available room sensors with PT 1000 and room actuators with potential-free output in any order and combination.

In this way you can create multi-room controllers for greater comfort and a more efficient energy consumption.

Page 33

“Solar” function

3 “Solar” function

Setting the general controller functions

The general controller functions allow you to configure the settings for charging the storage tanks. You can set the following controller functions:

• Charging method

• "Storage tank priority" function

• "Parallel charging" function

• Pump control

• "Tube collector" function

3.1 Setting the charging method

In order to optimise the energy output, you can choose from the following charging principles:

• "Temperature difference" charging principle

• "Target temperature" charging principle

The charging principle is selected in the following menu item:

• Basic settings/Solar circuit/Charging principle

"Temperature difference" charging method

In the case of the "Temperature difference" charging principle, the solar circuit pump is controlled in such a way that the temperature difference between the collector and the storage tank is maintained at as constant a level as possible.

"Target temperature" charging method

In the case of the "Target temperature" charging principle, the solar circuit pump is switched on when a certain specific target temperature has been reached in the collector.

For this function you can set the following parameters:

• Program/Solar circuit/Target temperature

3.2 Setting the "Storage tank priority" function

This function is available only for 2 or more storage tank systems.

Page 34

“Solar” function

pump two

way valves. 2 storage tanks are charged

in parallel.

The "Storage tank priority" function controls the tank charging of dual tank systems. There are the following types of dual tank systems:

• Systems with two separate storage tanks

• Systems with a stratified storage tank (a storage tank with two heat exchangers, one on

top of the other)

• Systems with a storage tank in combination with a swimming pool

• etc.

In control mode, the first storage tank is charged as a storage tank with priority 1. If more heat is generated than required, the excess energy is fed into the second storage tank (storage tank with priority 2). In the case of the stratified storage tank, the top heat exchanger is defined as the first storage tank.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Hydraulic layout

• Basic settings/Solar circuit/Charging break

• Basic settings/Solar circuit/Priority

• Program/Solar circuit/Storage tank active

3.3 Setting the "Parallel charging" function

This function is available only for 2 or more storage tank systems with pumps or

This function allows you to charge 2 storage tanks simultaneously. This requires the charging conditions for one storage tank to be fulfilled. At the same time the parallel charging conditions for one storage tank with lower priority must be fulfilled. Both pumps run with a pump output of 100 %. For layouts with valves, both valves will be opened. The energy output is divided between the two storage tanks.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Hydraulic layout

• Basic settings/Solar circuit/Parallel charging

• Program/Solar circuit/Parallel charging

Page 35

“Solar” function

3.4 Setting the pump control system

You can connect standard pumps and high-efficiency pumps (HE pumps). For these you can set the following types of control system:

• 230 V block modulation (standard pumps)

• Analog control (HE pumps)

• Non-inverted PWM control (HE pumps)

• Inverted PWM control (HE pumps)

In order to keep the storage tank temperature as constant as possible, the solar circuit pumps can be controlled by means of speed control. You can set the minimum pump output with speed control between 30 % and 100 %. At 100 % the speed control will be switched off.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Pump type R1 (R2, R3)

• Program/Solar circuit/Speed control

For HE pumps the following applies: Switching outputs R1 and R2 switch only the pump supply. They are not speedcontrolled. Their minimum switch-on time is 5 seconds.

To reduce the switching frequency of the high-efficiency pump, it is better to connect it directly to the 230V supply.

Controlling HE pumps with analog signals

In the case of the pump control system complete with analog signal, the controller sends a 0–10 V analog signal to terminals HE1 and HE2.

Definitions for the output voltage (U):

• Pump off: 0.5 V < U < 1.0 V

• Speed control: Linear characteristic 3 V < U < 10 V (for a minimum pump output of

30 %)

The following diagram shows the power curve for the pump control system with analog signal.

n (%) – Pump output U (V) – Output voltage

Page 36

“Solar” function

Controlling HE pumps with PWM signals

In the case of the pump control system with PWM signal, the controller sends a PWM signal (pulse width modulation signal) to terminals HE1, HE2 and HE3. The PWM signal can be sent normally (not inverted) or inverted.

In the case of the pump control system with a non-inverted PWM signal, the nominal speed of the pump (0–100 %) corresponds to the PWM signal (0–100 %). The following diagram shows the power curve for the pump control system with a non-inverted PWM signal.

n (%) – nominal speed of the pump PWM (%) – non-inverted PWM signal

In the case of the pump control system with an inverted PWM signal, the nominal speed of the pump (0–100 %) corresponds to the PWM signal (100-0 %). The following diagram shows the power curve for the pump control system with an inverted PWM signal at a minimum pump output of 30 %.

PWM (%) – inverted PWM signal n (%) – pump speed sent by the controller

Page 37

“Solar” function

3.5 Setting the "Tube collector" function

If the solar power system is equipped with tube collectors, you have to activate this function.

The control type is selected in the following menu item:

• Basic settings/Solar circuit/Tube collector/Function

− Time-controlled

− Radiation-controlled

− Control via temperature change

Time-controlled

You can set a time window and a pump runtime. In the time window the solar circuit pump is switched on at certain specific intervals for the duration of the preset pump runtime.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Tube collector/Pump runtime

• Program/Solar circuit/Tube start time (stop)

Radiation-controlled

When the level of radiation reaches the preset radiation value, the solar circuit pump is switched on for the duration of the preset pump runtime.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Tube collector/Pump runtime

• Program/Solar circuit/Radiation

Control via temperature change

Whenever the collector temperature rises by a predefined value within a predefined interval period, the solar circuit pump will be switched on.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Tube collector/Time

• Basic settings/Solar circuit/Tube collector/delta T

3.6 Bypass function / external heat exchanger

When the criteria for switching on are met, the solar circuit pump is activated first in order to warm up the collector circuit. This optimizes the energy generation process, especially in larger solar power systems. The storage tank is not charged until the temperature in the solar circuit is sufficient to do so. The parameters for switching on and off are permanently set in the controller.

Page 38

Setting protective functions

4 Setting protective functions

In order to protect the solar power system against frost and overheating, the controller is equipped with the following protective functions:

• "Collector protection" function

• "Storage tank protection" function

• "System protection" function

• "Pump protection" function

• "Heat exchanger protection"

• "Recooling" function

• "Drain-back" function

• "Anti-freeze protection" function

4.1 Setting the "Collector protection" function

This function protects the collector against overheating. If the preset collector protection temperature is exceeded, the solar circuit pump switches on. The pump runs until the temperature limit in the storage tank (95 °C) has been reached. This is done irrespective of the preset maximum storage tank temperature.

If the temperature of the collector falls below the preset collector protection temperature by 10 °C, the solar circuit pump switches off. The system will run again in normal operating mode.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Collector protection

4.2 "Storage tank protection" function

If a hydraulic layout with two storage tanks is used, the "Storage tank protection" function will be automatically active and cannot be changed.

This function protects the storage tanks against overheating caused by faulty wiring or any other possible faults. If the temperature limit is exceeded in one of the storage tanks (95 °C), all switching outputs will be switched off. The storage tank will no longer be charged.

When the temperature in the storage tank falls below the temperature limit again, the system will be in normal operating mode again.

Page 39

Setting protective functions

ATTENTION

4.3 "System protection" function

This function is active at all times.

This function protects the system against overheating. If the temperature of the collector rises above the preset system protection temperature, the solar circuit pump switches off.

When the temperature falls below the system protection temperature, the system will be in the "Collector protection" function again. When the temperature falls below the collector protection temperature, the system will be in normal operating mode.

For this function you can set the following parameters:

• Basic settings/Solar circuit/System protection

4.4 "Pump protection" function

This function is active at all times and cannot be changed.

If the solar circuit pump is not activated for 10 days, the controller starts the solar power system automatically for 30 seconds.

4.5 "Heat exchanger protection" function

This function protects the heat exchanger against damage from frost. Whenever the temperature on the collector falls below 5 °C, the heat exchanger pump switches on.

4.6 Setting the "Recooling" function

This function is automatically active if a hydraulic layout with external heat exchanger is activated.

Risk of damage to the solar power system if operated with the "Recooling" function in combination with reheating.

 Make sure that reheating is not in operation before you activate the

"Recooling" function.

The "Recooling" function can be activated only if the "Collector protection" function is active.

Page 40

Setting protective functions

This function protects the system against overheating in the following situations:

• If no hot water is used over an extended period of time (e. g. during a vacation)

• If the collector protection temperature is exceeded

If the temperature in the collector falls below the temperature in the storage tank (usually at night), the solar circuit pump switches on. This recools the storage tank to a preset temperature.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Collector protection

• Basic settings/Solar circuit/Recooling

4.7 Setting the "Drain-back" function

The "Drain-back" function can be activated only if the "Recooling" function has been deactivated.

With drain-back systems, the collector will be drained empty when the pump is off. To pump the air out of the system, the pump will be operated at 100 % for an adjustable time.

The "Min runtime" parameter is used to set a minimum pump runtime.

The "Condition time" parameter is used to set how long the conditions for switching on and off must be active in order to take effect.

The fill time and the minimum runtime are reduced in the case of short switch-off times.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Drain-back

• Basic settings/Solar circuit/Drain-back/Fill time

• Basic settings/Solar circuit/Drain-back/Min runtime

• Basic settings/Solar circuit/Drain-back/Condition time

You can choose between the control types "Temperature difference" and "Radiationcontrolled".

Temperature difference

Radiation-controlled

When the level of radiation reaches the preset radiation value, the solar circuit pump is switched on for the duration of the preset pump runtime.

Page 41

Measuring the energy yield

For this control type you can set the following parameters:

• Program/Solar circuit/Radiation

4.8 Setting the "Anti-freeze" function

The "Anti-freeze protection" function can be activated only if the "Drain-back" function has been deactivated.

This function protects the solar power system against the heat transfer fluid freezing. If the temperature falls below the preset temperature, the solar circuit pump switches on.

If the preset temperature is exceeded, the solar circuit pump switches off. The system will run again in normal operating mode.

For this function you can set the following parameters:

• Basic settings/Solar circuit/Anti-freeze protection

• Basic settings/Solar circuit/Anti-freeze protection/Sensor

• Basic settings/Solar circuit/Anti-freeze protection /Start temperature

• Basic settings/Solar circuit/Anti-freeze protection /Hysteresis

• Basic settings/Solar circuit/Anti-freeze protection/Min. runtime

5 Measuring the energy yield

The controller can calculate and display the energy yield of the solar power system. You can assign yield measurement 1 to the solar circuit or set it as an independent yield measurement.

The controller can calculate and display the energy yield of the solar power system as the yield measurement in the solar circuit. To do so, it requires the following values:

• Flow rate

• Temperature difference between the collector and collector return flow temperatures

• Glycol type and glycol concentration in the heat transfer fluid

The energy output is displayed in the following menu item:

• Info/Balance values/Output

For the energy yield measurement you can set the following parameters:

• Basic settings/Yield measurement

You can choose from the following measurement methods:

• DFG (flow sensor)

• VFS (vortex flow sensor)

• DFA (flow indicator) – only yield measurement 1 in the solar circuit.

Page 42

Setting multi-function controllers (MFC)

Energy yield measurement in any hydraulic circuit is possible with yield measurement 1 (set as independent) and energy yield measurement 2.

This is also possible with energy yield 3 to 6 if flex 400 modules are connected optionally.

An additional flow sensor or vortex flow sensor is needed for energy yield measurement 2 and 3–6 (when flexboxes connected). This additional sensor must be installed in the hydraulic circuit which is to be measured. Note the flow sensor specifications.

The two temperature sensors needed can be freely assigned to the function. It is thus possible to measure the energy yield in any hydraulic circuit.

5.1 DFG (flow sensor)

The flow sensor measures the flow rate mechanically. It is located on the return flow pipe of the solar power system. To determine the energy output with a flow sensor, the pipemounted sensor S4 must also be connected for temperature measurement.

5.2 VFS (vortex flow sensor)

The VFS measures the flow rate and the temperature. The following types can be installed in the solar power system:

• VFS Type 1–20 (Measuring range of 1 to 20 litres/minute)

• VFS Type 2-40 (Measuring range of 2 to 40 litres/minute)

5.3 DFA (flow indicator)

Only with yield measurement 1 in the solar circuit. In the case of this measurement principle the flow rate is measured just the once by a flow indicator (flow indicator on the solar pump group – Tacosetter or adjustment valve) at a pump output of 100 % (e. g. in manual mode). The measurement value is entered at the controller. The flow indicator can then be removed again. The energy output is determined on the basis of this measurement value.

If you use the "Flow indicator" measurement principle, you must make sure that you do not operate the solar circuit pump with speed control. This would lead to incorrect results for the energy yield measurement. Enter the value "100 %" in the "Program/Solar circuit/Speed control" menu item.

Page 43

Setting multi-function controllers (MFC)

via a respective link

. R0 is not speed

controlled.

6 Setting multi-function controllers (MFC)

You can activate up to 6 multi-function controllers (MFC). The sensors and the output (incl. HE1-HE3) can be freely assigned. The connected flex-modules can be also used for that purpose.

The outputs are not linked to the PWM outputs (HE1-HE3). This can be achieved

You can assign the following functions to the multi-function controllers:

• "Heating" function

• "Cooling" function

• "Temperature difference controller" function

• "Threshold value switch" function

• "Return flow boost" function

• "Wood-fired boiler" function

• "Circulation" function

• "Alarm" function

• "Timer" function

• "HW reheating" function

• "Temperature range" function

• "Modulation" function

• "Cascade" function

• "Yield" function

• "Mixer" function (only MFC 1)

• "Valve" function (only MFC 2)

• "Storage tank cooling" function (only MFC 3)

You can select the function for the required multi-function controller in:

• Basic settings/MFC 1–6/Function.

6.1 Setting the "Cooling" function

In the case of the "Cooling" function, the switching output of the multi-function controller switches on as soon as the preset switch-on temperature is exceeded. If the temperature drops below the lower limit of the preset temperature range (hysteresis), the switching output of the multi-function controller switches off.

Page 44

Setting multi-function controllers (MFC)

For this function you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor, Output

• Program/MFC 1-6/Setpoint temperature

• Program/MFC 1-6/Hysteresis

• Program/MFC 1-6/Time 1–3: Start (Stop)

6.2 Setting the "Heating" function

In the case of the "Heating" function, the switching output of the multi-function controller switches on as soon as the temperature falls below the preset switch-on temperature. If the temperature rises above the upper limit of the preset temperature range (hysteresis), the switching output of the multi-function controller switches off.

For this function you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor, Output

• Program/MFC 1-6/Setpoint temperature

• Program/MFC 1-6/Hysteresis

• Program/MFC 1-6/Time 1–3: Start (Stop)

6.3 Setting the "Temperature difference controller"

function

In the case of the "Temperature difference controller" there is a measurement point at both the source and the sink. If the difference between the temperatures of the two measurement points exceeds a predefined value, the switching output of the multifunction controller switches on.

In addition, a minimum temperature can be set at the source and a maximum temperature at the sink. If the maximum temperature is exceeded or the temperature falls below the minimum temperature, the switching output of the multi-function controller switches off.

For this function you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor, Sink sensor, Output

• Basic settings/MFC 1-6/Speed

• Program/MFC 1-6/Tmax sink

• Program/MFC 1-6/Diff. controller max

• Program/MFC 1-6/Tmin source

• Program/MFC 1-6/Diff. controller min

• Program/MFC 1-6/Time 1–3: Start (Stop)

Page 45

Setting multi-function controllers (MFC)

6.4 Setting the "Threshold value switch" function

In the case of the "Threshold value switch" function, the switching output of the multifunction controller switches on as soon as the temperature reaches the preset switch-on temperature. If the temperature drops below or rises above the preset temperature range (hysteresis), the switching output of the multi-function controller switches off.

To use this function for heating, set the "Hysteresis" value to greater than 0. To use this function for cooling, set the "Hysteresis" value to less than 0.

For this function you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor, Output

• Program/MFC 1-6/Setpoint temperature

• Program/MFC 1-6/Hyteresis

6.5 Setting the "Return line boost" function

To save energy, energy is supplied to the heating return flow from the solar circuit or storage tank. The mode of operation and relevant parameters are similar to those of the "Temperature difference controller" function.

6.6 Setting the "Wood-fired boiler" function

This function allows you to re-heat the storage tank from a solid fuel boiler. The switching output of the multi-function controller will be activated if the boiler temperature (source sensor) plus the selected temperature range (hysteresis) exceeds the storage tank temperature (sink sensor).

In addition you can also define a switch-on temperature (Tmin source). In this case the pump will not start until the switch-on temperature has been reached.

With this function the storage tank will be heated to a maximum temperature of 95 °C.

For this function you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor, Sink sensor, Output

• Basic settings/MFC 1-6/Speed

• Program/MFC 1–6/Tmin source

• Program/MFC 1-6/Hysteresis

6.7 Setting the "Circulation" function

This function provides you with hot water at all times. You can choose from the following control types:

• Temperature-controlled

• Time-controlled

Page 46

Setting multi-function controllers (MFC)

Temperature-controlled

The switching output of the multi-function controller switches on as soon as the temperature falls below the preset setpoint temperature. If the temperature rises above the upper limit of the preset temperature range (hysteresis), the switching output switches off. The sensor must be fitted in the circulation return line.

For this control type you can set the following parameters:

• Basic settings/MFC 1-6/Source sensor , Output

• Program/MFC 1-6/Setpoint temperature

• Program/MFC 1-6/Hysteresis

Time-controlled

The circulation pump is switched on and off in alternation within a preset time window. You can configure the setting for the duration of the respective runtime and waiting time.

For this control type you can set the following parameters:

• Basic settings/MFC 1-6/Runtime, Output

• Basic settings/MFC 1-6/Waiting time

• Program/MFC 1-6/Time 1–3 start (stop)

6.8 Setting the "Alarm" function

In the case of this function, the switching output of the multi-function controller switches on or off when there is a fault on the sensors used. For this function you can set the following parameters:

• Basic settings/MFC 1–6/Output, Link.

6.9 Setting the "Timer" function

In the case of this function, the switching output of the multi-function controller switches on within the preset time window. For this function you can set the following parameters:

• Basic settings/MFC 1–6/Output

• Program/MFC 1-6/Time 1–3 start (stop)

6.10 Setting the "HW reheating" function

With this function, the MFC output will be switched on when the hot water request is active. The HW reheating can thus be implemented in layers using a three-way reversing valve. No further parameters can be set for this function.

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Setting multi-function controllers (MFC)

6.11 Setting the "Temperature range" function

With this function you can set the upper limit and the lower limit of a temperature range. The multi-function controller will switch only within this temperature range.

For this function you can set the following parameters:

• Basic settings/MFC 1–6/Source sensor, Output

• Program/MFR 1–6/Tlimit max.

• Program/MFR 1–6/Tlimit min.

6.12 Setting the "Modulation" function

With this function you can also request modulating heaters in accordance with the required supply line temperature.

The operating range (linear curve) is defined by two vertexes. The first vertex is formed from the parameters „Actuate min. [V]“ and „Demand min. [°C]“. The second vertex is formed from the parameters „Actuate max. [V]“ and „Demand max. [°C]“.

If no request is active, 0V will be output.

If hot water is active (ch. 2.4), the voltage set in the "Actuate HW" parameter will be output for the duration of the hot water processing at the output. The analog output for the modulation is freely assignable. Outputs HE1 and HE2, and the HE outputs from additionally connected flex 400 modules, are available.

The link is set by default to R0 (heat generator request), but it can be changed if required.

For this function you can set the following parameters:

• Basic settings/MFC 1–6/output.

• Basic settings/MFC 1–6/Delayed off period.

• Basic settings/MFC 1–6/Request min.

• Basic settings/MFC 1–6/Request max.

• Basic settings/MFC 1–6/Actuate min.

• Basic settings/MFC 1–6/Actuate max.

• Basic settings/MFC 1–6/Actuate HW.

6.13 Setting the "Cascade" function

With this function you can create a cascade of energy generators or enable actuation from one output in accordance with a particular time. The MFC must be linked by "and" to the output it is to follow. When the leading output is switched on, the delay time will begin to run. When the time has ended, the assigned output will be switched on.

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Setting multi-function controllers (MFC)

When the leadfing ouput is switched off, the MFC will also be switched off and reset to its initial state.

For this function you can set the following parameters:

• Basic settings/MFC 1–6/output.

• Basic settings/MFC 1–6/Delayed off period

• Basic settings/MFC 1–6/Link

• Program/MFC 1–6/Waiting time

6.14 Setting the "Yield" function

With this function you can perform an energy yield measurement via an S0 interface. The total yield and the day yield then appear in the "Info" menu.

For this function you can set the following parameters: Basic settings/MFR 1–6/Input S00-S10, S12-S15 (Please note: the inputs S00, S12-S15

respond to +5V at the input)

• Basic settings/MFC 1–6/Pulse number per kWh

6.15 Setting the "Mixer" function (only MFC 1)

With this function you can boost the return line by mixer to the calculated maximum supply line setpoint tempertaure of the heating circuits.

The multi-function controller uses different setpoint temperatures as reference:

1. Supply line: The currently highest supply line setpoint temperature is used as

reference. The mixer is controlled according to the source sensor (e.g. an external heat source) and sink sensor. If the source rises above the supply line setpoint temperature + hysteresis, the function will become active and the mixer will adjust to the supply line setpoint temperature + hysteresis.

2. Hot water: The hot water setpoint temperature is used as reference. The control

workflow is the same as point 1.

3. Temperature: An adjustable target temperature is used as reference. The mixer is

adjusted to this temperature according to the source sensor. If the source rises above the sink setpoint temperature + hysteresis, the function will become active and the mixer will adjust to the source setpoint temperature + hysteresis.

For this function you can set the following parameters:

• Basic settings/MFC 1/Target type

• Basic settings/MFC 1/ Output 1 (mixer open), Output 2 (mixer closed)

• Basic settings/MFC 1/Source sensor, sink sensor

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Setting multi-function controllers (MFC)

• Basic settings/MFC 1/ Mixer parameters (total actuating time, actuating time, cycle

time)

• Program/MFC 1/Hysteresis

An example layout can be found in the document Hydraulic layouts.

6.16 Setting the "Valve" function (only MFC 2)

With this function you can boost the return line by valve in accordance with the calculated maximum supply line setpoint temperature of the heating circuits.

The multi-function controller uses the currently highest supply line setpoint temperature as reference and switches the valve in accordance with the source sensor (e.g. an external heat source).

If the source rises above the HC supply line setpoint temperature + hysteresis, the function will become active and the valve will be actuated.

If the source drops below the HC supply line setpoint temperature, the valve will be switched off.

For this function you can set the following parameters:

• Basic settings/MFC 2/Source sensor

• Basic settings/MFC 2/Output

• Basic settings/MFC 2/Delayed off period

• Basic settings/MFC 2/Link

• Program/MFC 2/Hysteresis

6.17 Setting the "Storage tank cooling" function (only

MFC 3)

With this function you can cool the storage tank via a heating circuit.

No output is assigned to this MFC. If the temperature rises above the set storage tank start temperature, the respective heating circuit pump will be switched on and the mixer controlled accordingly. In this way the storage tank can be cooled when there is suprplus solar energy, and stagnation of the solar power system can be prevented.

The function will end when the temperature drops below the set storage tank stop temperature.

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Setting multi-function controllers (MFC)

Pos. Description

1 AND/OR logic between R3 and the remaining outputs

2 AND/OR logic between the individual outputs.

any are connected.

This function makes sense for systems with a solar combination storage tank. You must set the respective radiator thermostats by hand in order to prevent unwanted heating of the rooms in the summer.

For this function you can set the following parameters:

• Basic settings/MFC 3/Heating circuit

• Basic settings/MFC 3/Source sensor

• Basic settings/MFC 3/Start temperature

• Basic settings/MFC 3/Stop temperature

• Basic settings/MFC 3/Delayed off period

6.18 Setting the logical link

In principle, all MFCs can be linked with other outputs. This means that the status of another output will influence the control operation of the respective MFC.

Example for MFC R3 with AND-AND logic:

This setting also defines the logic between the individual outputs of the flex modules if

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Setting multi-function controllers (MFC)

This would mean that MFC with output R3 is active only if:

• The switch-on conditions are met AND

• R1 is on (1) AND R2 is off (0).

R3, R4, R5, R6, R7, R0, HE1, HE2 and HE3 do not need to be taken into account (x).

Its own output (in this case R3) cannot be edited.

The value "10xxxxxxxx" is entered in the menu point Basic settings/MFC/Link. Assignment:

R1 R2 R3 R4 R5 R6 R7 R0 HE1 HE2 HE3

1 0 x x x x x x x x x

Example for MFC R3 with AND-OR logic:

This would mean that MFC with output R3 is active only if:

• The switch-on conditions are met AND

• R1 is on (1) OR R4 is on (1).

With the OR link there is no "0" selection.

The value „1xx1xxxxxxx“ is entered in the menu point Basic settings/MFC/Link. Assignment:

R1 R2 R3 R4 R5 R6 R7 R0 HE1 HE2 HE3

1 x x 1 x x x x x x x

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Setting multi-function controllers (MFC)

1336B-TB009-12B-E

Example for MFC R3 with OR-OR Logic:

This would mean that MFC with output R3 is active only if:

• The switch-on conditions are met OR

• R1 is on (1) OR R4 is on (1).

The value „1xx1xxxxxxx“ is entered in the menu point Basic settings/MFC/Link. Assignment:

R1 R2 R3 R4 R5 R6 R7 R0 HE1 HE2 HE3

1 x x 1 x x x x x x x

If you change the link type, the set links will be deleted.