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Universal controller for solar energy systems with up to two collector arrays and two stor-

age reservoirs

OPERATING MANUAL

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!Note!Use the controller only after first reading this operating manual and familiarising yourself with its con-tent in full! In the event of any uncertainty regarding use of the controller, contact your heating engin-eer.

Contents1. What can your new controller do?..........................................................................................................2

1.1. Information regarding operation........................................................................................................ 32. Appropriate usage.................................................................................................................................. 33. Safety instructions.................................................................................................................................. 34. Guarantee and liability............................................................................................................................ 45. Positioning of manuals........................................................................................................................... 46. Important functions at a glance.............................................................................................................. 47. How your controller is structured............................................................................................................ 5

7.1. The display........................................................................................................................................ 58. Basic menu navigation........................................................................................................................... 6

8.1. Changing to a submenu.................................................................................................................... 68.2. Navigating within a submenu.............................................................................................................68.3. Adjusting a value............................................................................................................................... 68.4. Leaving a submenu........................................................................................................................... 7

9. Functions and settings........................................................................................................................... 79.1. Information display submenu “INF”................................................................................................... 79.2. User settings submenu “AE”..............................................................................................................99.3. Clock submenu “CL” and calendar submenu “CAL”........................................................................109.4. Switching times submenu “CH”....................................................................................................... 109.5. Relay test submenu “REL”.............................................................................................................. 11

10. Maintenance......................................................................................................................................... 1211. Faults.................................................................................................................................................... 1212. Your solar energy system..................................................................................................................... 12

1. What can your new controller do?Your solar controller is a microprocessor-based controller, for control of solar energy systems with up to two separate collector arrays and two storage reservoirs. The pumps are controlled so as to optimise the heat en-ergy obtained from the solar collector arrays, according to the solar irradiation and the temperatures which arise in the solar energy system. With the heat energy thus obtained, a maximum of two storage reservoirs can be loaded, e.g. a domestic water storage tank or a swimming pool. The solar controller can control solar energy systems which have collector arrays mounted with two different orientations.

Your controller offers all of the following: - Heating of water for domestic use and / or for use in a heating system- Combination of domestic water heating with your central heating system (backup heating)- Protection against Legionella in domestic water, which is hazardous to health- Control of water overturn in a stratified storage reservoir- Control of circulation pump, an external heat exchanger and / or a bypass

Contents

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Note!Make sure that your heating engineer fills in the Your solar energy system checklist (section 12) after installing the solar energy system. A quick glance at this list will then inform you about the design of your solar energy system and the functions at your disposal.

!1.1. Information regarding operation

Note!The solar energy system is configured by your heating engineer during commissioning and operates in a fully automatic manner. Even during long periods of absence (e.g. holidays), do not switch the solar energy system off.

!2. Appropriate usage

The controller is intended for the control of thermal solar energy systems for hot water and heating support with up to two collector arrays and two storage reservoirs. Usage for any other purpose is not permitted and does not apply as appropriate usage. The controller meets the latest technological standards and the applic-able safety regulations of the EMC Directive (2004/108/EC), the Low Voltage Directive (2006/95/EC) and the harmonised standards DIN EN 60730-1 and DIN EN 60730-2-9.

The controller may only be installed and operated in: dry environments which are not potentially explosive closed rooms rooms with a temperature between 0 °C and + 50 °C

3. Safety instructionsDanger of electrocution! The controller is to be assembled, electrically installed, commissioned, inspected and repaired by

trained, competent and authorised persons (qualified electricians as per DIN VDE 1000-10 and BGV A3) only!

Observe all applicable guidelines and regulations of the local electricity supplier! Before beginning installation or repair work on electrical equipment, always ensure complete dis-

connection from the mains and secure against reactivation! Do not work on live parts!

DANGER

Note! Never bring highly flammable materials into the vicinity of the controller! Protect the controller against moisture, cold, heat, dust and intense solar irradiation. The controller may only be used when in technically perfect condition. Any damage which im-

pairs, or could impair, the safety or proper functioning of the controller must be rectified immedi-ately by a competent and authorised person!

Do not change any of the parameters which are not described in this operating manual!

!

What can your new controller do?

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4. Guarantee and liabilityAll regulations regarding guarantee and liability are stipulated within the manufacturer’s general terms and con-ditions, and within the respective contractual relationship. Guarantee claims and liability claims are expressly excluded in the following cases: If damage has been caused by inappropriate usage of the controller. In the event of unauthorised opening of the housing, unauthorised on-site alterations or interference with

the control software. If the electrician has conducted installation or repair work improperly. In the event of failure to observe safety instructions or working instructions in the operating manual or

commissioning manual.

5. Positioning of manualsThe operating manual and the commissioning manual must be made available to the installer before installa-tion of the controller begins. They must always be kept near the controller in a legible state, so as to ensure that they can be accessed quickly when needed.

6. Important functions at a glanceYou want: To do this, press: The display shows:…to query information on your solar energy sys-tem, e.g. present measurements or the yields ob-tained from your solar energy system (see inform-ation display submenu, section 9.1)

…the button (once), begin-ning in the start display.

…to change the user settings, e.g. the storage reservoir’s minimum temperatures (see user set-tings submenu, section 9.2)

…the button (twice), be-ginning in the start display.

…to deactivate storage reservoir 1 or (if present) storage reservoir 2 (summer / winter operation, swimming pool) (see user settings submenu, sec-tion 9.2)

…the button (twice), be-ginning in the start display, then (once) and (either two or three times). or

…to change switching times, e.g. so that the heat generator only supports your solar energy sys-tem’s water heating at certain times (see switching times submenu, section 9.4)

…the button (five times), beginning in the start display.

INF

AE

CH

SPA1

SPA2

Guarantee and liability

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7. How your controller is structured

7.1. The displayYour controller has a clearly laid-out display, which shows you information (e.g. present temperatures) regard-ing your solar energy system and helps you to adjust values. Once the start display appears, this means that the controller has been activated correctly and is in operation. The basic structure of the start display is as fol-lows:

Sto rage rese rvo i r 1

Load ing pum p 1 active

Load ing p um p 2 ina ctive

Load ing pum ps

Collec tor array tem pera tureColle cto r a rray 1

Tem pe ra tu re in love r p artof s to rage rese rvo ir 1

Tem pe ra tu re in uppe r p artof s to rage rese rvo ir 1

Backup he ating active

Please note that other symbols or values which are not pictured above can also appear in your controller’s start display. It is highly likely that your controller will display other temperature values. Moreover, the symbols and measurements for collector array 2 or storage reservoir 2 can also be shown in the start display, accord-ing to your solar energy system’s configuration.

These symbols can also appear in the display:

Hot water backup heating active Sensor defective (interruption)

Change value Sensor defective (short circuit)

Anti-Legionella function active Note: collector protection function or storage reservoir safety function active

Frost protection active Alarm: emergency switch-off temperat-ure exceeded

Display of information which cannot be changed eBus interface

Note!If your controller is displaying the time, the weekday and “OFF”, it is switched off. Clarify the reasons for this with your heating engineer and, if applicable, reactivate the controller by pressing and holding the button for at least 5 seconds. As soon as the start display appears, the controller has been reactivated.

!

How your controller is structured

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8. Basic menu navigation

You can easily reach any part of the menu with the aid of the four buttons , , and . Beginning in the start display (see section 7.1 The display), you can use the buttons to change to any sub-menu, so as to query or adjust various values.

In general, the following applies: The button is used for confirming your selection, saving a changed value or switching to a sub-

menu. The button is used for discarding your selection, discarding an entered value or leaving a sub-

menu. The buttons and are used for scrolling and for changing values.

8.1. Changing to a submenu Beginning in the start display, press the button or repeatedly until the desired sub-

menu is displayed. Confirm your selection by pressing .

8.2. Navigating within a submenu Use / again to navigate within a submenu until the desired value is displayed (de-

scription of the individual values can be found in the following subsections). In order to change a value or to confirm a selection, press .

8.3. Adjusting a valueIf the symbol appears in the display, you can change the set values:

Use the / buttons to change the value. Press to confirm your setting, or discard your setting with .

Basic menu navigationesc –

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8.4. Leaving a submenu

From anywhere in a submenu, you can return to the main menu without saving changes by pressing . In addition, the start display is returned to automatically if 60 seconds pass without any button being pressed (exception: relay test submenu returns to main menu after 30 minutes).

9. Functions and settings

The following menus can be called up from the start display with the buttons and :1. Information display “INF” 2. User settings “AE”3. Setting the current time and weekday “CL”4. Setting the current date “CAL”5. Selection of switching times “CH”6. Manual relay adjustment “REL”

9.1. Information display submenu “INF”In the information display submenu, you can read the values specified below. Press the button while in the start display. “INF” appears. Confirm your selection by pressing . As long as you are in the informa-tion display submenu, an “I” also appears in the display.

Note!Depending on the design and configuration of your solar energy system (see section 12 Your solar en-ergy system), it may happen that not all of the values listed below are displayed. !In the information display submenu, the temperature values for the collector arrays and storage reservoirs are shown first:

Temperature of collector array 1 (TC1)

Temperature of collector array 2 (TC2)

Upon display of the two possible storage reservoirs, the prefix “V” indicates the storage reservoir to be priorit-ised for loading (VSP1 or VSP2 instead of SP1 or SP2).

SP1 Storage reservoir temperature in upper part of storage reservoir 1 (TSP1)

SP1 Storage reservoir temperature in lower part of storage reservoir 1 (TSR1)

SP2 Storage reservoir temperature in upper part of storage reservoir 2 (TSP2)

SP2 Storage reservoir temperature in lower part of storage reservoir 2 (TSR2)

Basic menu navigationesc

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You can also read the following measurements and results in the information display menu:

Display FunctionTRH Heating return temperature (temperature of the heating water before it is pumped back into the

boiler to be heated).Note: only when heating support is activated!

TX Storage reservoir temperature which governs the activation of heating support. If the storage reser-voir temperature exceeds the heating return temperature TRH, the solar energy system can sup-port room heating.Note: only when heating support is activated!

TCX Additional collector sensor which measures the common temperature of 2 collector arrays for yield calculation.Note: only when the yield calculation function is activated!

TR Solar return temperature (temperature of the solar fluid before it is pumped back through the col-lector to be heated).Note: only when the yield calculation function is activated!

TW Temperature at external heat exchanger or at bypass.Note: only if heat exchanger or bypass is installed!

TWW Temperature at storage reservoir’s hot water connection.Note: only when the hot water overturn function is activated!

TSPo Temperature at the uppermost – and warmest – point of the storage reservoir.Note: only when the hot water overturn function is activated!

TH Temperature value for thermostat function, e.g. circulation pump.Note: only when the thermostat function is activated!

TVA First temperature value for the temperature comparison function.Note: only when the temperature comparison function is activated!

TVB Second temperature value for the temperature comparison function.Note: only when the temperature comparison function is activated!

SE Solar sensor information: present solar irradiation in W/m².Note: only if solar sensor is installed!

VM Volume flow in l/h (volume of solar fluid transported through the system each hour).Note: only if volume flow meter is installed!

ERTA Total yield of the solar energy system in kWh.The total yield can be set to zero by pressing and holding the button for five seconds while the value is displayed.Note: only when the yield calculation function is activated!

ERTd Yield from the previous day in Wh or kWh.The previous day’s yield can be set to zero by pressing and holding the button for five seconds while the value is displayed.Note: only when the yield calculation function is activated!

ERT0 Yield from the current day in Wh or kWh.The current day’s yield can be set to zero by pressing and holding the button for five seconds while the value is displayed. Note: only when the yield calculation function is activated!

Functions and settings

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Display FunctionED1 Relative switch-on duration of pump P1.ED2 Relative switch-on duration of pump P2.ED3 Relative switch-on duration of pump P3.ED4 Relative switch-on duration of pump P4.VER Important for your heating engineer; controller’s hardware version: 4 (most recent version), control-

ler’s software version, e.g. 1.0.KON Number of the system layout configured by the heating engineer (system layout 1 upon deliv-

ery) and information on the configured additional functions: 1 STX (heating support)2 BRP (bypass)3 WTR (heat exchanger)4 WUR (hot water overturn)5 STR (yield calculation)6 ALR (anti-Legionella function)7 STH (thermostat function)8 VSA (temperature comparison function)9 SSE (solar sensor)A LFF (low-flow function)b SPV (storage reservoir prioritisation)C SSF (safety function)d KSF (collector safety function)E FSF (collector frost protection function) F SNR (domestic water reloading via additional relay)The configured additional functions (1-9, A-F) are automatically shown in succession in the display.

9.2. User settings submenu “AE”In the user settings submenu, you can set the values specified below individually. Press the button twice, beginning in the start display. “AE” appears. Confirm your selection by pressing . If you change a setting, please enter the new value in the “selection” column.

Note!Depending on the design and configuration of your solar energy system (see section 12 Your solar en-ergy system), it may happen that not all of the values listed below are displayed. !Display Function Factory

settingRange Se-

lec-tion

MAX1 Maximum loading temperature for stor-age reservoir 1.

70 °C 10 °C to 90 °C

MAX2 Maximum loading temperature for stor-age reservoir 2.Note: only if second storage reservoir is installed!

70 °C 10 °C to 90 °C

Functions and settings

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Display Function Factory setting

Range Se-lec-tion

NHT Minimum water temperature which should be available regardless of the solar energy system.Note: only if provided for in the system!

40 °C 10 °C to 90 °C

SPA1 Activation / deactivation of storage reservoir 1.

YES YES / noYES – storage reservoir 1 is activated.no – storage reservoir 1 is deactivated (no loading of storage reservoir).

SPA2 Activation / deactivation of storage reservoir 2.Example: deactivation of swimming pool heating in winter.Note: only if second storage reservoir is installed!

YES YES / noYES – storage reservoir 2 is activated.no – storage reservoir 2 is deactivated.

9.3. Clock submenu “CL” and calendar submenu “CAL”In these submenus, you can check and adjust the current time and date settings.Beginning in the start display, press the button repeatedly until one of the displays shown below ap-pears, then confirm your selection with , so as to be able to adjust the settings.

For setting the time and weekday For setting the date

Possible settings:

- hour : minute- weekday

Possible settings:

- day.month. - year

The flashing cursor indicates which value can currently be changed. Move the curser beneath the desired value by pressing . To change a value, press / ; save with .

9.4. Switching times submenu “CH”You can specify switching times for various functions of your solar energy system. This means that these func-tions can only be executed within these times. Your controller distinguishes between 6 different switching-time channels. The provided 45 switching times can be subdivided among the 6 switching-time channels as re-quired.

! Note!Please note that of the switching-time channels listed here, you can only use those which correspond to the design and configuration of your solar energy system.

Navigate to the submenu by pressing repeatedly until “CH” appears, then press to confirm your selection. Once you are in the switching times submenu, you can first call up various switching-time channels with / , then activate a channel with the button.

User settings submenu “AE”

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The switching-time channels shown here are available to you, depending on the configuration of your solar en-ergy system or your solar controller. Unlike all other channels, the switching-time channel CH2 (anti-Legionella function) is inactive by default and must be enabled by allocating a switch-on time.

Time-controlled enabling of hot water backup heating (NHZ) in switching-time channel CH1:

Time-controlled enabling of the anti-Legionella function (ANTI) in switching-time channel CH2:

Time-controlled enabling of hot water overturn (WWU) in switching-time channel CH3:

Time-controlled enabling of the thermostat function (TH), e.g. upon use of the circulation pump, in switching-time channel CH4:

Time-controlled enabling of the temperature comparison func-tion (TV) in switching-time channel CH5:

Time-controlled enabling of the collector monitoring function (CW) in switching-time channel CH6:

Adding a switching time:

Scroll with the or buttons until “--:--” appears in the display instead of a switching time. Confirm your selection with the button. Now change the switching status (display I = switch-on time, display O = switch-off time), time and weekday by using the button to scroll through the individual values and / to change them. The flashing cursor indicates which value can currently be changed. Press to save and the flashing cursor disappears.

Changing a switching time:

Use to navigate to the desired switching time, change the switching status (I/O), time and weekday by using to scroll through the individual values and / to change them. The flashing cursor indicates which value can currently be changed. Press to save and the flashing cursor disappears.

Deleting a switching time:

Use to navigate to the switching time which you would like to delete. When scrolling through the hour values, “--:--” appears instead of the time between hours 23 and 0. Confirm this with and the switching time is deleted.

9.5. Relay test submenu “REL”This submenu is intended for your heating engineer. Please do not change any settings here!

Switching times submenu “CH”

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10. MaintenanceThe controller is maintenance-free. From time to time, you can clean it with a soft, clean and dry cloth.

! Note! Make sure that no moisture gets inside the controller! For cleaning, never use cleaning agents which contain solvents!

11. FaultsWhenever any faults arise in your controller or solar energy system, please always contact your heating engin-eer.

DANGER

Danger of electrocution!Never open the controller housing yourself!

! Note!After a power failure, the controller resumes operation automatically. All previously saved values and settings are retained!

12. Your solar energy system

Selected system layout,explanation:_________________________ No.: Number of collector arrays 1 2

Hot water overturn active Yes No

Storage reservoir 1, use:_____________________________

Yes No Stratified storage reservoir present Yes No

Anti-Legionella function active Yes No

Storage reservoir 2, use:_____________________________

Yes No Bypass or external heat exchanger present

Yes No

Hot water backup heating Yes No Circulation pump present Yes No

Heating support Yes No Yield calculation function active Yes No

Maintenance

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Notes:

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Notes:

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Notes:

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The descriptions, performance specifications and graphics in this manual are non-binding. Subject to technical alterations. This manual may not be duplicated, distributed, altered, passed on, translated into another language or used in any other way, without the express permission of the manufacturer. The content of this manual has been carefully checked. Nevertheless, the manufacturer cannot be held liable for any errors in this manual. Furthermore, if this operating manual is not adhered to, or is only partly adhered to, the manufacturer assumes no liability for any resulting damage.

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