Steca TR 0704 Installation And Operating Manual

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SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO- SOLAIRE THERMIQUE - SOLARE TERMICO

Installation and Operating Manual

System Regulator for Solar Thermal Systems

7 inputs, 4 outputs

709.756 | Z02 | 08.08 | Änderungen aufgrund technischer Verbesserungen vorbehalten!

These operating instructions are part of the product.

Read these operating instructions carefully before use. Keep them over the entire lifetime of the product and pass them on to any future owner or user of this product.

  

Content

1 SECURITY INSTRUCTIONS AND RESTRICTION OF LIABILITY..................... 4

1.1 Sign for security instructions.........................................................................4

1.2 General safety instructions............................................................................4

1.3 Regarding these instructions.........................................................................4

1.4 Restriction of liability ....................................................................................4

2 INSTALLATION AND OPERATION ...................................................................5

2.1 Location of installation .................................................................................5

2.2 Installation

....................................................................................................5

2.3 Regulator Connecti

on ...................................................................................6

3 OPERATING THE SYSTEM REGULATOR........................................................ 8

3.1 Basic Menu....................................................................................................8

3.2 Measuring Values Menu ...............................................................................8

3.3 Operating Status Menu.................................................................................9

3.4 Parameter Menu .........................................................................................10

3.5 Date/Time Menu .........................................................................................11

3.6 Clocks Menu ...............................................................................................11

3.7 System Selection Menu ...............................................................................11

3.8 Functions Menu ..........................................................................................11

3.9 Links Menu..................................................................................................12

3.10 Extras Menu ................................................................................................12

3.11 Manual Operation Menu.............................................................................12

4 SYSTEM SELECTION ......................................................................................13

4.1 Systems with Internal Heat Exchanger ........................................................15

4.2 Systems with Plate Heat Exchanger ............................................................41

4.3 Systems for Suppleme

ntary Heating ...........................................................51

5 FUNCTIONS

......................................................................................................57

5.1 Thermostats

................................................................................................57

5.2 Differential Thermostats

.............................................................................58

5.3 Radiation Switches......................................................................................58

5.4 Time Functions............................................................................................59

5.5 Pipe Coll./Interval ........................................................................................59

5.6 Heat Meters ................................................................................................59

5.7 Additional Measuring Values ......................................................................60

5.8 Collector Temperature Limitation ...............................................................60

5.9 DVGW Heating............................................................................................61

5.10 Synchronous Output ...................................................................................62

5.11 Frost Protection...........................................................................................62

5.12 Fresh Water at R2........................................................................................63

6 LINKS................................................................................................................64

7 SYSTEM EXAMPLES........................................................................................65

7.1 Circulation Function ...................................................................................65

7.2 Stop after-heating in the Morning..............................................................66

7.3 Supplementary Heating ..............................................................................67

7.4 Solid Fuel Boilers.........................................................................................68

7.5 Recharging Storage Tanks ..........................................................................69

7.6 Swimming Pool Heating ............................................................................. 70

7.7 Bypass in the Solar Circuit ..........................................................................71

8 CONFIGURATION.............................................................................................72

9 SYSTEM EXPANSION ......................................................................................72

9.1 IS-Bus.......................................................................................................... 73

9.2 RS 232 ........................................................................................................73

9.3 Add-on and Alarm Outputs ........................................................................75

10 INFORMATION FOR TROUBLESHOOTING ................................................76

11 LEGAL GUARANTEE....................................................................................79

12 TECHNICAL DATA........................................................................................80

1 Security instructions and restriction of liability

1.1 Sign for security instructions

Security instructions for personal safety are marked with this sign and are printed in bold letters.

Instructions that refer to the functioning safety of the system are also printed in bold letters.

1.2 General safety instructions

For your own safety please note the following for installation:

Please see that fire safety cable systems and similar things are not impaired!

The controller must not be installed and used in moist areas (e. g. bathrooms) or in rooms in which flammable gas mixtures (by gas bottles, paint, solvents etc.) are likely to occur!

Do not store any of the above and similar things in rooms where the solar controller is installed! The controller must not be installed on a conductive base! Use well-isolated tools only! Do not use technical equipment that is defective or broken! The construction safety measures can deteriorate if the controller is used in a way other than the one

determined by the manufacturer. The preset signs and marks must not be changed, removed or made illegible. All operations must be conducted in accordance with the national electricity regulations and local

rules! For installation in foreign countries please see your corresponding institutions for information on

regulations and safety measures. Keep children away from electronics!

1.3 Regarding these instructions

These operating instructions describe the functioning and installation of a controller for thermal solar systems for feeding solar heat into a water or buffer store.

For the installation of the other components such as the solar collectors, pump group and the storage basins please follow the corresponding installation instructions of the manufacturer.

Before starting operation read the paragraph "installation and operation" no. 5 and make sure that all measurements have been prepared before.

Only begin with the installation when you have understood this instruction and proceed in sequen ce! These instructions must be handed out to all persons that work with this system.

These instructions are part of the system controller and must be handed over in case the controller is sold.

1.4 Restriction of liability

The manufacturer cannot monitor the compliance with these instructions or the circumstances and methods used for installation, operation, utilization and maintenance of this controller.

Improper installation can cause damages to material and persons. This is the reason why we do not take over responsibility and liability for losses, damages or cost that

might arise due to improper installation, operation or wrong utilization and maintenance or that occur in some connection with the afore-mentioned.

Moreover we do not take over liability for patent infringements or infringements - occuring in connection with the use of this controller - on third parties´ rights.

The manufacturer preserves the right to put changes to product, technical data or installation and operation instructions without prior notice.

NOTE: Opening the device – connecting case excluded – as well as other use than determined

by the manufacturer leads to a loss of warranty.

2 Installation and operation

The following must be observed when performing electrical work on the regulator:

Depending on the version, the regulator is designed for use with 115V or 230V (±15 %) alternating voltage with a frequency of 50 or 60Hz (see rating plate). Operation with different ratings is not permitted. Also ensure the permitted current ratings are not exceeded. If an Earth conductor is intended or required for the pump, the Earth conductor must be connected. The corresponding Earth conductor wire terminals are provided. Ensure that the ground contact is also connected to the regulator’s mains supply side. Cables, which are not permanently connected with the building must be provided with a strain relief outside the regulator. The regulator may only be used for the intended purposes. No liability shall be assumed for any noncompliant usage.

Any work with an open regulator may only be carried out if the mains power is disconnected. All safety regulations for working with the mains apply here. The connection, and any work where the regulator has to be opened, may only be carried out by trained electricians. The regulator is protected against overcharging and short circuiting.

2.1 Location of installation

The controller is designed for installation on vertical walls. It must not be installed in areas where you can find flammable liquids or gases. It is only allowed to install the controller in areas in which the protective system (see Technical data) is sufficient. The max. permissible ambient temperature at the place of installation must never be exceeded or fallen below. Moreover, the controller must not be used in moist rooms (bathrooms) or in rooms in which flammable gas mixtures (by gas bottles, paint, solvents etc.) are likely to occur!

fig.1: Installation

2.2 Installation

Wall mounting The upper regulator cover (fig.1, no. 1) protects the regulator’s electronics and may not be removed for installation purposes.

Screw 1 must first be screwed into the wall to mount the regulator. The regulator is subsequently hung on this screw with the cutout (fig.1, no. 2). The regulator can be used as a template to mark the two other mounting holes (fig.1, pos. 3 and 4). (Warning: only use the regulator as a marking template, never as a drilling template).

After tightening the controller to the wall, you can start with the wiring.

215,00

193,00

130,00

150,00

2.3 Regulator Connection

First of all leave open the wire entrances for the power supply connection and the connecting wires of the sensors and the pump in the casing bo x. For this purpose there are material draws to be cut out (fig.2, Pos. 1). Each wire entrance needs two vertical cuts into the wall of the plastic case. For the cutting you can use cable stripping knife or an electronic side cutter. The cutting depth should be 2 mm min. from the plastic case ground. Afterwards the plastic clip can be taken out by moving it back and forth.

The lines outside the regulator must be strainrelieved (e.g. with strain relief clamps). Alternatively, the cable inlets can be equipped with a housingspecific strain relief from the manufacturer. If the regulator must be wired through the back panel of the housing, there are also cut-outs available for PG screw fittings (fig.1, pos. 5) - PG 9.

The connecting activities as described here are only possible when the terminal box cover plate of the controller is open. For this purpose clear the power supply net. Stick to all valid regulations for working on a cleared power supply net. Only connect to the power supply net when controller case is closed. Moreover, the user has to take care of the fact that the IP protection is not damaged.

The connection of the individual pumps or valves depends on the layout plan. Therefore in chapter 4, a corresponding terminal connection table is provided for each diagram. If a protective Earth wire is provided or required for pumps or switch valves the Earth wire must be connected. The corresponding connection terminals are provided. Ensure the Earth wire is also connected to the regulator on the mains supply side. Each terminal may be allocated only one

connecting cable (up to 2.5mm²). Connector sleeves must be used with finely stranded cables.

fig.4: Terminal connection table for the mains supply

Abb.3: Betätigung der Anschlußklemmen

cut-out

fig.2: material cut-out for wire entrance

fig.3: Actuation of connection terminals

R4 output (230V switch output or voltage-free output):

R4 switch

output 230V:

R4 voltage free

output:

fig.5: Connection variants for R4 output

To simplify things, the R4 output has always been displayed as a 230V switch output in chapter 4. However, the output - as shown here

- can also be wired as a potentialfree output as required.

Temperature sensors Warning: Only the original sensors permitted for the regulator may be used. These are Pt1000 type

sensors. The polarity of the sensor contacts is irrelevant when connecting. The sensor cables can be extended up to a length of around 100m. To do this, use an extension cable cross section of 1.5mm² up to 100m and 0.75mm² up to 50m.

Radiation sensors

Warning: Only the original radiation sensors permitted

for the regulator may be used. Since these sensors are active components, correct polarity must be ensured when connecting.

fig.6: Radiation sensor connection

Pulse generators

If pulse generators are used with a “reed switch” the connection polarity is arbitrary. Ensure the correct polarity, when using an "open collector" circuit.

fig.7: Volume Flow Meter

All sensor cables are low voltage and must be installed separately from current-carrying power lines (minimum distance 100 mm) to prevent external inductive interference. If external inductive interferences, for example by heavy current cables, contact wires, transformer stations, radio and television sets, amateur radio stations, microwave devices, or similar devices are to be expected, the cables carrying the measuring signal must be shielded. The mains can be switched on once the terminal area is closed with the terminal cover and the corresponding housing screw. The date and time must appear in the regulator’s LCD display when the mains is switched on. The date and time will have to be reset if the regulator’s power supply has be disconnected for a long time.

E1 to E7

REED- or mech. contact :

E1 to E7

Open collector:

blue

red

E6 or E7

clam

3 Operating the System Regulator

The regulator allows the solar thermal system operator to create a system matching his/her own user profile. This is ensured by various setting options for parameters and service functions. The performance of the system is easily monitored due to the numerous measured data and above all the graphic visualization of the data. Operating the system’s regulator is subsequently described in detail. Menu diagrams clarify the selection options here and provide an overall summary of the regulator’s navigation.

3.1 Basic Menu

Use the

(UP) or (DOWN) buttons to browse

through the menu. Select the individual subdirectories with the OK button.

To protect against unintentional changes to the regulator functions, all directories in the ‘Service’ menu have a "child-proof lock". Press the OK and Menu button simultaneously for 2 seconds to open

these directories. Press the OK button for 2 seconds to select or change

a setting. Press the Menu button to return to a previous menu.

*) The 'Clocks' submenu can only be opened if one or more clocks have been previously activated under Functions!!!

**) The Links subdirectory is only displayed in the menu if selected functions must be linked!!!

3.2 Measuring Values Menu

All measuring values recorded by the regulator are displayed in the 'Measuring values' submenu. After opening the menu, the current measuring values are listed as numerical values. The measured data saved in the integrated data logger can also be graphically displayed. The temperature progressions in the last 15 days can be displayed in the temperatures. Graphics of the operating hours both for the last 15 days and the last 13 months are available for evaluating the pump running times. Radiation, power and flow rate values have graphics covering the last 15 days, last 13 months, last 5 years and also an annual overview. The operating hours of the outputs used are recorded during the entire running time and are continually added up (“Σ”). In addition, the user can record the operating hours for an arbitrary time period (“Δ”) and then reset them. Select the value of the operating hours “Δ” and press the OK button for 2 seconds to reset the operating hours.

Please note that the summed up displays for operating hours, flow rate and amount of heat do not reset to 0 after 99´999. Instead, for storage space reasons, they reset after 15´000 h

(operating hours), 15´000kWh (heat quantity) and 50´000l (flow rate).

Date / Time...

Service

stem selection...

Links... **

Manual o

eration...

Measurin

values...

erating status...

Settin

Parameter...

Functions...

Extras...

Clocks *

Call up (OK button) a selected measuring value to open the relevant graphic menu. The individual days, months or years can now be called up with the

buttons. Press the OK button to change between the day, month and year records. In addition to the temporal progressions, the minimum and maximum values are also displayed in the records. The scale of each individual graphic is automatically adjusted to the minimum and maximum values reached, through which the graphs sustain the utmost accuracy.

fig.8: Records of measuring values

Note:

The graphically displayed values are average values taken over a 15 minute measuring

time. Instantaneous fluctuations in the measuring values cannot be displayed in the records. Since only an aberrant average value can be displayed in the graphics, and not the reached threshold value, switching thresholds of the control system cannot be precisely incorporated into the records.

Press the Menu button at any time to exit the graphic menu.

3.3 Operating Status Menu

The 'Operating status' submenu provides the user with a quick overview of the operating status of the individual pumps or valves and any possible system error messages. Depending on the size of the system, as shown in fig.9, the operating status of the connected extension units (see chapter 9.1 for additional IO boxes) is also displayed. The status of the individual outputs – regardless of whether a pump, a valve or nothing is connected to them – is displayed by a pump symbol . The pump symbol does not move in a current-less state. If an output is active, the corresponding symbol rotates. The status or error display provides information on which errors, if any, are present on the regulator. If "Status ok" appears in the display, no errors are present. If, however, errors have been detected (e.g. interruptions or short circuits in the temperature sensors’ cables), they flash in the display [e.g.: "Interrupt. E1 (regulator)"]. After being rectified, the individual error messages must be successively acknowledged. If an error message is acknowledged without the rectifying its cause, the error is displayed again a few seconds after being acknowledged.

As long as an error message is displayed, the regulator’s alarm output (see chapter 9.3) is active. The alarm output is deactivated, once the error is rectified and successfully acknowledged.

fig.9: 'Operating status' menu

Me asur ing values...

Ope rating statu s... + Sett ings

collector 1: 21°C

storage 1 bottom: 47°C op. hours R1

: 112h

op. hours R1Σ: 919h

values of the last 15 days

values of the last 13 month

values of the last 15 days

values of the last 13 month

values of the last 5 years

overview of the last 5 years

radiation: 9 W/qm therm. power: 0 W flow rate: 183 l/h

daily

overview

monthly

overview

yearly

overview

5 years'

overview

storage 1 bottom: 47°C op. hours R1

Δ:112

op. hours R1

:919h

M e as ur ing v alu es ... Ope ratin g s tatu s ... + Settings

regul ator:

status: ok

R1 R2 R3 R4

IO-Box 1:

status: ok

R1 R2 R3

IO-Box 2:

status: ok

R1 R2 R3

IO-Box 3:

status: ok

R1 R2 R3

IO-Box 4:

status: ok

R1 R2 R3

fig.10: Overview of the 'Settings' menu

3.4 Parameter Menu

All threshold and hysteresis values of the selected layout plan are listed in the 'Parameter' menu window. The regulator is factory set so that it can be used for most applications without changing these values. All parameters can be changed within certain limits, thus allowing the system to be individually personalized. Select the corresponding parameter. Press the OK button for 2 seconds to adjust the selected value (value flashes). You can now change the parameter with the buttons and save it by again pressing the OK button for 2 seconds. Some values can only be adjusted in certain areas or are mutually locked to prevent erroneous settings. If a layout plan with several storage tanks has been selected, the 'storage tank priority' of the individual storage tank must be specified. In the 'storage tank priority...' submenu, the priority order of the individual storage tank can be checked and, if necessary, changed. The priority order is factory set based on the respective storage tank name (i.e. first storage tank 1; before storage tank 2; before storage tank 3; etc.). This setting can be changed at any time. Press the OK button for 2 seconds to move the selected storage tank within the priority list (name flashes). Use the

buttons move the storage tank within the

list and save it by again pressing the OK button for 2 seconds. Operation of the storage tank priority is described in more detail with

the corresponding systems (chapter 4).

The regulator has two electronic relays for the speed control of circulating pumps. The speed control can be separately activated or deactivated for each of these outputs. Both speed controls are activated as a factory setting (:). If, however, the outputs are operated as pure switch outputs, this control system must be deactivated (: --2sec-->). The respective regulator settings can be adjusted in the 'Settings‘ submenu. The speed control of the pumps is for regulating the temperature. Depending on the selected setting, either the differential temperature or the absolute temperature is held to a constant value. The sensor values, on which the differential and absolute temperature are based, are determined by the selected layout plan and cannot be changed.

Press the Menu button to return to the previous menu.

Meas urin g values ... Ope r ating s tatu s ...

+ Set tin gs

Ope rat in g s tatus ...

- Settings

Parame ter...

Dat e / Ti m e ... + Clo cks + Ser vice

storage 1 max.: 60°C

Diff. temp. solar1 ON: 8 K Diff. temp. solar1 OFF: 4 K . . .

Parameter... Date / Time...

+ Clocks

- Settings Param ete r...

Date / Time...

+ Ser vice

Tu e 01.01.2002

Tim e: 08:00

Date / Time ... + Clocks

+ Service

+ Clo cks

- Service

Sys tem se lection ...

Functions...

Link s ... *

Extr as... M anual op e ration...

Date / Time ...

+ Clo cks + Ser vice

- Clocks

Clock 1...

Clo ck 2...

Clock 3...

The 'Clocks' submenu can only be opened if one or more clocks have been previously activated

under submenu 'Functi oncs' !!!

*) The 'Links' subdirectory is only displayed in the menu if selected functions must be linked !!!

Parameter...

Date / Time... + Clocks

+ Service

storage max. 60°C collector max. 130°C Diff. Temp. solar ON: 8 K

. . .

Storage tank priority...

+ speed control

R1 (regulator)

Settings...

R2 (regulator) Settings...

x x

control aim:

absolute temp.

min. speed control [%]: 30

- speed control

Fig.11: 'Parameters' menu

3.5 Date/Time Menu

The date and time can be set or changed in the 'Date/Time' menu window (see fig.10). The date is entered separately according to day, month and year. The corresponding day of the week is independently calculated by the system regulator. Press the OK button for 2 seconds to set the day’s date (day flashes). You can now set the day with the

buttons. Confirm the day entry (OK button) to change to the month entry (month flashes). You

can now set the month with the

buttons. Confirm the month entry (OK button) to change to the

year entry (year flashes). You can now set the year with the

buttons and save the full date by confirming again (OK button). The regulator then calculates the corresponding day of the week. The time is entered in the same way, and is separated by hours and minutes. Daylight savings time is changed automatically by the regulator. However, this only applies until 2007, because the 2000/84/EC directive (EC directive on time change) expires in 2007 and no political decision has yet been made for the period thereafter.

In the event of a power failure the date and time will be retained for more than 12 hours. Press the Menu button to return to the previous menu.

3.6 Clocks Menu

In the 'Clocks' menu window the switching times available for the functions can be changed quickly without having to individually open every relevant function. In total, up to 3 independent clocks are available. After being opened, the menu window only shows the clocks used under Functions. If thus

far, no time functions have been activated, this menu window can not be opened!!!

Each clock can be programmed with 5 time intervals for week days (Mo to Fr) and 5 time intervals for the weekend (Sa and Su). Entering or changing time intervals is performed separately by hours and minutes. Press the OK button for 2 seconds to set the hour of the selected time (hour value flashes). You can now set the hour with the

buttons. Confirm the hour entry (OK button) to change to the

minute entry (minute value flashes). You can now set the minutes with the

buttons and save the

time by confirming again (OK button). Press the Menu button to return to the previous menu.

3.7 System Selection Menu

Important: The 'System selection' menu window is part of the 'Service' menu and is therefore

additionally protected against unintentional changes. Hold the OK and Menu buttons simultaneously for 2 seconds to open this menu window ("child-proof lock").

Before a new layout plan can be selected the current layout plan must first be

deactivated (press OK 2 sec.)!!!

The layout plan can be assigned in steps with several substructures. More detailed information on the correct system selection in found in chapter 4.

3.8 Functions Menu

Important: The 'Functions' menu window is part of the 'Service' menu and is therefore additionally

protected against unintentional changes. Hold the OK and Menu buttons simultaneously for 2 seconds to open this menu window ("child-proof lock").

More detailed information on the possible functions is found in chapter 5.

3.9 Links Menu

This menu window is only shown in the menu if linking selected functions is required or possible !!!

Important: The 'Links' menu window is part of the 'Service' menu and is therefore additionally

protected against unintentional changes. Hold the OK and Menu buttons simultaneously for 2 seconds to open this menu window ("child-proof lock").

More detailed information on creating links is found in chapter 6.

3.10 Extras Menu

The ‘Extras' menu window contains the 'display contrast', 'factory settings' and 'delete records' option box. The contrast of the display can be changed with 'display contrast'. Press the OK button for 2 seconds to set the value (value flashes). You can now change the contrast with the

buttons and

save it by pressing the OK button again for 2 seconds.

Reset the system regulator to the as supplied condition with 'factory settings.

Please observe that individually adjusted setting parameters and selected functions must be subsequently readjusted to the corresponding system.

Select 'factory settings' and press the OK button for 2 seconds to reset the system regulator to the as supplied condition. For confirmation 'ok' appears until the menu is exited. Please contact your specialist dealer, if you are not confident enough to configure the regulator yourself. No liability shall be assumed for any damage caused by regulators incorrectly set!

Press the OK button for 2 seconds with 'delete records' to delete the measuring value records saved to date (see chap 3.3). For confirmation 'ok' appears until the menu is exited.

3.11 Manual Operation Menu

Important:

The 'Manual operation' menu window is part of the 'Service' menu and is therefore

additionally protected against unintentional changes. Hold the OK and Menu button simultaneously for 2 seconds to open this menu window ("child-proof lock").

All used switch outputs for the system regulator and any connected addon modules – called IO boxes – (see ch. 9.1) can be switched on or off for testing purposes (e.g. after maintenance and repair work) in the 'Manual operation' menu window. For clarity reasons, only the displayed alarm output (see chapter 9.3) and outputs, which are used by the applied layout plan or selected functions. To change an output’s switching status, select the output to be changed and press the OK button for 2 seconds. This setting remains active until the output is deactivated again by pressing the OK button for 2 seconds or the 'Manual operation' submenu is exited via the Menu button.

Warning:

The regulator switches back to automatic mode after the 'Manual operation' exiting submenu.

This means: this menu must be exited again after finishing maintenance and repair work.

Links... Extras... Manual operation...

R1 (regulator) off

R2 (regulator) off

R3 (regulator) off R4 (r e gu lato r) of f R1 (IOBo x1) off

. . .

Alarm ou tput off

OK + Menu

(2 sec)

R1 (regulator) on R2 (regulator) off R3 (regulator) off

OK (2 sec.)

R4 (regulator) off

OK (2 sec.)

Fig.12: 'Manual operation' menu

4 System Selection

The system regulator has a database with more than 70 pre-programmed solar systems. The corresponding basic system must be selected in the regulator before commissioning the system. The connection of sensors, pumps and/or valves is also dependent on the present system. All basic systems, their electrical terminal connection table and a brief menu overview are displayed in the following chapter. The pre-programmed systems can be roughly differentiated as follows:

4.1 Systems with internal heat exchanger:

4.1.1 Systems with 1 storage tank and 1 collector array

4.1.2 Systems with 1 storage tank and 2 collector arrays

4.1.3 Systems with 2 storage tanks and 1 collector array

4.1.4 Systems with 2 storage tanks and 2 collector arrays

4.1.5 Systems with 3 storage tanks and 1 collector array

4.1.6 Systems with 3 storage tanks and 2 collector arrays

4.1.7 Systems with 4 storage tanks and 1 collector array

4.2 Systems with plate heat exchanger:

4.2.1 Systems with 1 storage tank

4.2.2 Systems with 2 storage tanks

4.2.3 Systems with 3 storage tanks

4.2.4 Systems with buffer tank and fresh water function

4.2.5 Systems with buffer tank and preheating storage tank

4.3 Systems for heating support:

4.3.1 Systems with

1 combi storage tank and internal heat exchanger

4.3.2 Systems with 1 combi storage tank and plate heat exchanger

4.3.3 Systems with

2 storage tanks

Before a new layout plan can be selected, the current layout plan must first be deactivated (press OK 2 sec.)! As long as no layout plan has been selected, the 'System selection...' menu cannot be exited with the 'Menu' button!

The hydraulic plans displayed in the following chapter only depict a schematic diagram. They are only meant as an aid to understanding and are in no respect a substitute for professional system planning.

The system regulator provides these system groups in a basic version ('Basic') and with different addons ('-Ci' , '-AH' , '-SFH' , '-CZ' , '-R'). These add-ons are explained in more detail in the following:

Circulation control

: '-Ci '

Some of the pre-programmed solar heating systems offer a circulation control as an add-on for the hot water circuit. This function requires a temperature sensor on the return line of the circulation line and a circulation pump. In the event the hot water circuit falls below the set value (parameter: 'circulation ON') the corresponding circulation pump is activated and runs until the adjustable switch-off value (parameter: 'circulation OFF') is reached.

Important

: When installing the sensor there should be a minimum distance of 1.5m to the storage

tank, to prevent erroneous measurements due to the thermal conduction of the pipe.

After-heating Control

: '-AH '

Some of the pre-programmed solar heating systems offer an after-heating control as an add-on for one of the storage tanks. This function requires a temperature sensor in the upper part of the storage tank and a heating circuit pump or a boiler control with potential-free controlling (e.g. condensing gas boiler). In the event the temperature falls below the set value (parameter: 'after-heating ON') the corresponding heating circuit pump or boiler control is activated and runs until the adjustable switch-off value (parameter: ‘after-heating OFF') is reached. Attention: Please observe that a heating circuit pump at the R4 output can be controlled either directly with 230V (e.g. an older boiler) (factory-installed terminal jumper must be fitted) or indirectly via a separate boiler control (e.g. gas condensing boiler) and the potential-free R4 switch output (factory-installed terminal jumper must be removed as otherwise the boiler control system can be destroyed). For graphical reasons the after-heating is always shown with a heating pump in the following hydraulic diagrams. Naturally, separate boiler controls can also be used.

After-heating control with solid fuel boiler: '-SFH '

Some of the pre-programmed solar heating systems offer an after-heating control with a solid fuel boiler as an add-on. This function requires a temperature sensor in the upper part of the storage tank, a temperature sensor on the solid fuel boiler and a heating circuit pump. In the event the temperature falls below the set value (parameter: 'solid fuel heat. ON') in the upper part of the storage tank, the control device automatically checks if the solid fuel boiler has reached the set minimum temperature 'boiler temp. min.' at the boiler sensor. Only in this case is the heating circuit pump switched on. When the storage tank reaches its set switch-off temperature (parameter: 'solid fuel heat. OFF'), the heating circuit pump is switched off again. During the charging process the control device continuously checks the temperatures of the solid fuel boiler as well. If the boiler exceeds its set temperature limit (parameter: 'boiler temp. min.' and 'boiler temp. max.') the heating circuit pump will also be switched off.

Charging Zone Control

: '-CZ ' (only with systems with plate heat exchanger)

Some of the pre-programmed solar heating systems provide a charging zone control as an add-on to utilize a simple layer in the storage tank. This function requires an additional temperature sensor in the storage tank (in the additional charging inlet area) and a 3-way valve. While the 'Basic' control always charges the storage tank at the top (this can, under certain circumstances, mix an existing layer), the temperature in the middle part of the storage tank is also factored in by this control system. As soon as the charging temperature (measured on the secondary side of the plate heat exchanger) is at least 2 Kelvin above the temperature in the middle part of the storage tank, the regulator starts to charge the upper part of the storage tank. If the charge current only provides temperatures lower than or the same as the 'middle of the storage tank‘ temperature, the charging current is diverted back to the middle storage tank area. The objective of the control device, however, is the required charging temperature (parameter: ‘charging setpoint'). To prevent the afterheating function from being inadvertently activated, systems with after-heating (-AH) or external afterheating as well as the after-heating parameters 'after-heating OFF or 'AH extern. threshold ' are also factored in by the switch valve’s control. Systems with after-heating (-AH) can only be switched to the upper charging zone, when the charging temperature is at least 2 Kelvin above the switching parameter 'after-heating OFF'. If the charging current only returns temperatures lower than or the same as this parameter, the charging current is diverted back to the middle storage tank area. Systems with external after-heating (ext. AH) can only be switched to the upper charging zone when the charging temperature is at least 3 Kelvin above the switching parameter 'AH extern. threshold '. If the charging current only returns temperatures, which are 1K above this parameter, the charging current is diverted back to the middle storage tank area.

Important

: To prevent mixing the hot upper area, the 3-way valve must be installed so that the

middle storage tank area is charged in a de-energized state!

Radiation Sensor Control: '-R '

Some of the pre-programmed solar systems offer a solar circuit control through a radiation sensor as an add-on. This function requires one radiation sensor for each collector array. In comparison with the 'Basic' control, this control activates the solar pump depending on the measured radiated power. If the solar radiation reaches the set threshold value (parameter: 'solar circ. ON'), the solar pump is activated. To prevent possible cold water charging (e.g. when snow is on the collector array), a bypass valve must be provided in the solar flow (advance) for systems with an internal heat exchanger that only allows the storage tanks to be charged when a sufficiently high temperature has been reached (solar advance temp. >= storage tank temp.+6K). The pump is first deactivated as soon as the radiated power falls below the set value (parameter: 'solar circ. OFF') or the storage tank or collector have reached their maximum/minimum temperatures.

Important

: The speed control of the solar pump (if provided) refers to the differential temperature

between the solar flow (advance) (T1) and the lower storage tank temperature or to the absolute temperature of the solar flow (advance) (T1) – depending on the speed control setting (see ch. 3.5). For this reason temperature sensor T1 (and possibly also T2) are essential. T1 (T2) must therefore be installed in the place described in the layout plan between the collector and storage tank!

Important

: The control device can only work properly when the 3-way valve has been installed so that it is

in bypass position in a de-energized state!

4.1 Systems with Internal Heat Exchanger

4.1.1 Internal heat exchanger, 1 storage tank, 1 collector array

If, in the 'System selection' menu, the points "intern. heat exchanger", "1 storage tank" and "1 collector" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" diagram:

As soon as the differential temperature between T1 and T2 reaches the set value (parameter: 'diff. temp. solar ON'), the solar circuit pump R1 is activated. If the storage tank reaches its maximum storing temperature (parameter: 'storage max.') or in the event it falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'), the pump switches off. Depending on the setting (parameter -> speed control -> R1) the solar pump’s speed control maintains the differential temperature between 'collector' (T1) and ‘lower part of the storage tank' (T2) at the value of the 'diff. temp. solar ON' parameter or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

The additional functions shown (circulation and the two after-heaters) are not activated.

• Add-on " - Ci":

Output R2 and the T4 temperature sensor can also provide a control of a circulation pump for the warm water cycle. A detailed functional description of the add-on with further tips can be found on page 14.

• Add-on " - AH":

R4 and T3 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• Add-on " - SFH":

With the help of R3, T3 and T5 after-heating is also possible considering the boiler temperature (required, for example, when burning solids). A detailed functional description of this add-on works can be found on page 15.

• "Basic - R" diagram:

In some cases the solar circuit pump must be controlled according to the solar radiation. For this purpose a radiation sensor S7 must be installed in the collector level. For control reasons, T1 must be inserted between the collector and bypass. A detailed functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

BasicCi

solid fuel

BasicSFH

oil, gas

BasicAH

or S7 (Radiation sensor for Basic-R)

Bypass for

Basic-R

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values collector: °C Operating status storage bottom: °C +Settings

sola

r-pump

Δ:

OK OK

sola

r-pump

Σ:

h Parameter storage max. 60°C Date / Time collector max. 130°C +Clocks Diff. temp. solar ON 8K +Service Diff. temp. solar OFF 4K

OK OK + Menu (2 sec.)

+speed control System selection -intern. heat exchanger Functions

OK Links -1storage tank Extras

Manual operation -1collector

~Basic

choose with OK (2sec.)

{Basic-AH {Basic-AH-SFH {Basic-AH-SFH-Ci {Basic-AH-Ci {Basic-SFH {Basic-SFH-Ci {Basic-R

{Basic-Ci

T3 T4 T5

R2 R3 R4

4.1.2 Internal heat exchanger, 1 storage tank, 2 collector arrays

4.1.2.1 Internal heat exchanger, 1 storage tank, 2 collector arrays, valve control

If, in the 'System selection' menu,

the points "intern. heat exchanger", "1 storage tank", "2 collectors" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T3 or T2 and T3. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, pump R1 is activated and the 3-way valve R2 is switched so that the corresponding collector array can be run through. While the storage tank is charged, the option of switching to the other collector array is constantly checked. A condition for switching is that the temperature of the passive collector array must be an adjustable value (parameter: 'switch collect.') higher than that of the active array. The storage tank is charged irrespective of which collector array is active until the value for the maximum storing temperature (parameter: 'storage max.') is reached or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). If this is the case, the solar circuit pump and the switch valve are switched off.

Definition

: When the 3-way valve is switched off, the collector array 1 is flown through!

Depending on the setting (parameter -> speed control -> R1), the solar pump’s speed control maintains the differential temperature between 'collector' (T1 or T2) and ‘lower part of the storage tank' (T3) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C.

The additional functions shown (circulation and the two after-heating systems) are not activated.

• Add-on " - Ci":

Output R3 and the T4 temperature sensor can also provide a control of a circulation pump for the warm water cycle. A detailed functional description of the add-on with further tips can be found on page 14.

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• Add-on " - SFH":

With the help of R3, T4 and T5 after-heating is also possible considering the boiler temperature (required, for example, when burning solids). A detailed functional description of this add-on works can be found on page 15.

oil, gas

Basic

-AH

Basic

-Ci

alternative radiation sensor for BasicV-R

solid fuel

Basic

-SFH

Bypass for BasisV-R

S6 S7

• "Basic V - R" diagram: In some cases the solar circuit pump needs to be controlled according to the solar radiation. For this purpose the radiation sensors S6 and S7 must be installed in the corresponding collector levels. For control reasons, T1 must be inserted between the collector’s collection point and bypass. The temperature sensor T2 is not required. A functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage bottom: °C

OK OK

sola

r-pump

Δ:

Parameter storage max. 60°C

sola

r-pump

Σ:

Date / Time collector max. 130°C

reversin

valve Δ:

+Clocks Diff. temp. solar ON 8K

reversin

valve Σ:

+Service Diff. temp. solar OFF 4K

OK OK + Menu (2 sec.)

switch collect. 10K

System selection

-intern. heat exchanger

+speed control

Functions

Links

-1storage tank

Extras

Manual operation

+1collector

- 2collector

{BasicP

......

~BasicV

choose with OK (2sec.)

{BasicV-AH {BasicV-AH-SFH {BasicV-AH-Ci {BasicV-SFH

{BasicV-R {BasicV-Ci

R3 R4

4.1.2.2 Internal heat exchanger, 1 storage tank, 2 collector arrays, pump control

If, in the 'System selection' menu, the points "intern. heat exchanger", "1 storage tank", "2 collectors" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" system:

The regulator constantly records the differential temperature between the sensors T1 and T3 or T2 and T3. Depending on for which collector array the switch-on differential temperature (parameter: 'diff. temp. solar1 ON' or 'diff. temp. solar2 ON') is first reached, either solar circuit pump R1 is switched on for collector array 1 or solar circuit pump R2 for collector array

2. When the storage is charged, it is also checked if the switch-on differential temperature of the inactive collector array has also been reached. If this is the case, this solar circuit will also be switched on. In the event the temperature falls below the switch-off differential temperature (parameter: 'diff. temp. solar1 OFF' or 'diff. temp. solar2 OFF') the corresponding pump is switched off. If the storage tank reaches its set maximum storing temperature (parameter: 'storage max.') both solar circuit pumps are switched off. Depending on the setting (parameter -> speed control -> R1 und -> R2), the solar pump’s speed control maintains the differential temperature between 'collector' (T1 or T2) and 'lower part of the storage tank’ (T3) constant at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C. The additional functions shown (circulation and the two after-heating systems) are not activated.

• Add-on " - Ci":

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• Add-on " - SFH":

• "Basic P - R" diagram:

In some cases the solar circuit pump needs to be controlled according to the solar radiation. For this purpose the radiation sensors S6 and S7 must be installed in the corresponding collector levels. For control reasons, T1 must be inserted between the collector’s collection point and bypass. The temperature sensor T2 is not required. A functional description of this add-on can be found on page 15.

collector field 1

collector field 2

oil, gas

Basic

-AH

Basic

-Ci

alternative radiation sensor for BasicP-R

solid fuel

Basic

-SFH

Bypass for BasicP-R

S6 S7

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage bottom: °C

OK OK

sola

r-pump

1 Δ:

Parameter storage max. 60°C

sola

r-pump

1 Σ:

Date / Time collector max. 130°C

sola

r-pump

2 Δ:

+Clocks Diff. temp. solar1 ON 8K

sola

r-pump

2 Σ:

+Service Diff. temp. solar1 OFF 4K

OK OK + Menu (2 sec.)

Diff. temp. solar2 ON 8K

System selection

-intern. heat exchanger

Diff. temp. solar2 OFF 4K

Functions

+speed control

Links

-1storage tank

Extras

Manual operation

+1collector

- 2collector

~BasicP

choose with OK (2sec.)

{BasicP-AH {BasicP-AH-SFH {BasicP-AH-Ci {BasicP-SFH {BasicP-R {BasicP-Ci {BasicV

......

T4 T5

R3 R4

4.1.3 Internal heat exchanger, 2 storage tanks, 1 collector array

4.1.3.1 Internal heat exchanger, 2 storage tanks, 1 collector array, valve control

If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", "1 collector" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" system:

The regulator constantly records the differential temperature between the sensors T1 and T2 or T1 and T3. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached by one of the differential temperatures, the pump R1 is switched on and the 3-way valve R2 is switched so that the corresponding storage tank is charged. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of the second storage tank is met, the 3-way valve is switched to this storage tank. When the secondary storage tank is charged the storage tank priority (“storage tank priority...” -> “Test interval”) is checked, at regular intervals, if it can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If the priority storage tank reaches its switch-on temperature within this period, this will be charged again. Depending on the setting (parameter -> speed control -> R1), the solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank’ (T2 or T3) at the value of the parameter ‘diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

Definition

: Storage tank 1 is charged when the 3-way valve is in a de-energized state!

The additional functions shown (circulation and after-heating) are not activated.

• Add-on " - Ci":

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• "Basic V - R" diagram:

In some cases the solar circuit pump must be controlled according to the solar radiation. For this reason, a S6 radiation sensor must be installed in the collector level. For control purposes T1 must be inserted between the collector and bypass. A detailed functional description of this add-on can be found on page 15.

or S6 (radiation sensor) for BasicV-R

oil, gas

Basic

-AH

Basic

-Ci

Bypass

for

BasicV-R

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

sola

r-pump

Δ:

Parameter storage 1 max. 60°C

sola

r-pump

Σ:

Date / Time storage 2 max. 60°C

reversin

valve Δ:

+Clocks collector max. 130°C

reversin

valve Σ:

+Service Diff. temp. solar ON 8K

OK OK + Menu (2 sec.)

Diff. temp. solar OFF 4K

System selection

-intern. heat exchanger

storage tank priority...

Functions

+speed control

Links

+1storage tank

Extras

- 2storage tanks

Manual operation

OK +1collector OK

{BasicP

......

~BasicV

choose with OK (2sec.)

{BasicV-AH {BasicV-AH-Ci

{BasicV-R {BasicV-Ci

R3 R4

4.1.3.2 Internal heat exchanger, 2 storage tanks, 1 collector array, pump control

If, in the 'System selection' menu,

the points "intern. heat exchanger", "2 storage tank", "1 collector" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" system:

The regulator constantly records the differential temperature between the sensors T1 and T2 or T1 and T3. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached by one of the differential temperatures, either solar circuit pump R1 is switched on for storage tank 1 or solar circuit pump R2 for storage tank 2. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or it falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of the second storage tank is met, the corresponding solar circuit pump is switched on. When the next storage tank is charged, the prioritized storage tank is checked at regular intervals (“storage tank priority...” -> “Test interval”), if it can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If the prioritized storage tank reaches its switch-on temperature within this period, it will be charged again.

Depending on the setting (parameter -> Speed control -> R1 and -> R2), the solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank' (T2 or T3) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

The additional functions shown (circulation and after-heating) are not activated.

• Add-on " - Ci":

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

oil, gas

Basic

-AH

Basic

-Ci

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

sola

r-pump

1 Δ:

Parameter storage 1 max. 60°C

sola

r-pump

1 Σ:

Date / Time storage 2 max. 60°C

sola

r-pump

2 Δ:

+Clocks collector max. 130°C

sola

r-pump

2 Σ:

+Service Diff. temp. solar ON 8K

OK OK + Menu (2 sec.)

Diff. temp. solar OFF 4K System selection -intern. heat exchanger storage tank priority... Functions

+speed control Links

+1storage tank

Extras

- 2storage tanks

Manual operation

- 1 collector

~BasicP

choose with OK (2sec.)

{BasicP-AH {BasicP-AH-Ci {BasicP-Ci

{BasicV

......

T4 T5

R3 R4

4.1.4 Internal heat exchanger, 2 storage tanks, 2 collector arrays

4.1.4.1 Internal heat exchanger, 2 storage tanks, 2 collector arrays, valve control

If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", "2 collectors" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" diagram:

The regulator constantly records the differential temperatures between the

collector sensors T1 or T2 and the storage tank sensors T3 or T4.

Depending on which collector

array and which storage tank first reaches the switch-on differential temperature (parameter: 'diff. temp. solar ON'), pump R1 switches on and the 3-way valves R2 and R3 are switched so that the corresponding collector array and the corresponding storage tank are flown through. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of the second storage tank is met, the 3-way valve switches to this storage tank. When the following storage tank is charged, the prioritized storage tank is checked, at regular intervals (“storage tank priority...” -> “Test interval”), if the can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If the prioritized storage tank reaches its switch-on temperature within this period, it will be charged again. When the storage tank is charged the option of switching to the other collector array is constantly checked. A condition for this switch is that the temperature of the passive collector array must be a adjustable value (parameter: 'switch collect.') higher than that of the active array. The storage tank is charged irrespective of which collector array is active until the value of the maximum storing temperature (parameter: 'storage max.') is reached or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). If this is the case, the solar circuit pump and the switch valves are switched off.

Definition: Collector array 1 and storage tank 1 are flown through when the 3-way valves are in a de-energized state!

Depending on the setting (parameter -> speed control -> R1), the solar pump’s peed control maintains the differential temperature between the active 'collector' (T1 or T2) and the 'lower part of the storage tank' temperature of the storage tank currently about to be charged (T3 or T4) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C.

The additional functions shown (circulation and after-heating) are not activated.

• Add-on " - Ci":

Output R4 and the T5 temperature sensor can also provide a control of a circulation pump for the warm water cycle. A detailed functional description of the add-on with further tips can be found on page 14.

storage tank 1

collector field 1

collector field 2

storage tank 2

Basic

-Ci

oil, gas

Basic

-AH

• Add-on " - AH": R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage 1 bottom: °C

OK OK

storage 2 bottom: °C

Parameter storage 1 max. 60°C

sola

r-pump

Δ:

Date / Time storage 2 max. 60°C

sola

r-pump

Σ:

+Clocks collector max. 130°C

valve collector Δ:

+Service Diff. temp. solar ON 8K

valve collector Σ:

OK OK + Menu (2 sec.)

Diff. temp. solar OFF 4K

valve stora

e Δ:

System selection -intern. heat exchanger switch collect. 10K

valve stora

e Σ:

Functions

storage tank priority...

Links

+1storage tank

+speed control

Extras

- 2storage tanks

Manual operation

+1collector

- 2collector

~BasicV

choose with OK (2sec.)

{BasicV-AH {BasicV-Ci

4.1.4.2 Internal heat exchanger, 2 storage tanks, 2 collector arrays, pump control

If, in the 'System selection' menu, the points "intern. heat exchanger", "2 storage tank", "2 collectors" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" diagram:

The regulator constantly records the differential temperatures between the

collector sensors T1 or T2 and the storage tank sensors T3 or T4.

Depending on which collector

array and which storage first reaches the switch-on differential temperature (parameter: 'diff. temp. solar1 ON' or 'diff. temp. solar2 ON'), either solar circuit pump R1 is switched on for collector array 1 or solar circuit pump R2 for collector array 2 and the 3-way valve R3 is switched so that the corresponding storage tank is charged. If the storage tank currently about to be charged is the first storage tank on the priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar x OFF'). Then, if the switch-on condition of the second storage tank is met, the 3-way valve is switched to this storage tank. When the next storage tank is charged, the prioritized storage tank is checked at regular intervals (“storage tank priority...” -> “Test interval”), if it can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If the prioritized storage tank reaches its switch-on temperature within this period, this will be charged again. When a storage tank is charged it is also checked if the switch-on differential temperature of the passive collector array is reached. If this is the case, the pump of the passive solar circuit is switched on. In the event of falling below the switch-off differential temperature (parameter: 'diff. temp. solar1 OFF' or 'diff. temp. solar2 OFF') the corresponding pump is switched off. If both storage tanks have reached their set maximum storing temperature (parameter: 'storage 1 max.' or 'storage 2 max.'), both solar circuit pumps and the 3-way valve are switched off. Note: The parameters 'diff. temp. solar1 ON' and 'diff. temp. solar1 OFF' apply for both

storage tanks with regard to collector array 1. The parameters 'diff. temp. solar2 ON' and 'diff. temp. solar2 OFF' apply for both storage tanks with regard to collector array 2.

Depending on the setting (parameter -> speed control -> R1 or R2), the speed control of the individual solar pumps maintains the differential temperature between the corresponding 'collector' (T1 or T2) and the 'lower part of the storage tank' temperature of the storage tank which is currently about to be charged (T3 or T4) at the value of the parameter 'diff. temp. solar1 ON' or 'diff. temp. solar2 ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C.

Definition

: Storage tank 1 is charge when the 3-way valve is in a de-energized state!

The additional functions shown (circulation and after-heating) are not activated.

• Add-on " - Ci":

storage tank 1

collector field 1

collector field 2

storage tank 2

Basic

-Ci

oil, gas

Basic

-AH

• Add-on " - AH": R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage 1 bottom: °C

OK OK

storage 2 bottom: °C

Parameter storage 1 max. 60°C

sola

r-pump

1 Δ:

Date / Time storage 2 max. 60°C

sola

r-pump

1 Σ:

+Clocks collector max. 130°C

sola

r-pump

2 Δ:

+Service Diff. temp. solar1 ON 8K

sola

r-pump

2 Σ:

OK OK + Menu (2 sec.)

Diff. temp. solar1 OFF 4K

reversin

valve Δ:

System selection -intern. heat exchanger Diff. temp. solar2 ON 8K

reversin

valve Σ:

Functions

Diff. temp. solar2 OFF 4K

Links

+1storage tank

storage tank priority...

Extras

- 2storage tanks

+speed control

Manual operation

+1collector

- 2collector

~BasicP

choose with OK (2sec.)

{BasicP-AH {BasicP-Ci

4.1.5 Internal heat exchanger, 3 storage tanks, 1 collector array

4.1.5.1 Internal heat exchanger, 3 storage tanks, 1 collector array, valve control

If, in the 'System selection' menu, the

points "intern. heat exchanger", "3 storage tank", "1 collector" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2, T1 and T3 or T1 and T4. If the set switch-on differential temperature (parameter: 'diff. solar ON') is reached by one of the differential temperatures, pump R1 switches on and the 3-way valves R2 and R3 are switched so that the corresponding storage tank is charged. If the storage tank currently about to be charged is the first storage tank on the priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of a storage tank with lower priority is met, the 3-way valves are switched to charge the corresponding storage tank. When a secondary storage tank is charged it is checked, at regular intervals (“storage tank priority...” -> “Test interval”), whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this will be charged.

Depending on the setting (parameter -> speed control -> R1), the solar pumps speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank' (T2, T3 or T4) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

Definition

: Storage tank 1 is charged when the 3-way valve R2 is in a de-energized state!

Storage tank 2 is charged when the 3-way valve R3 is in a de-energized state (R2 is energized)!

The additional functions shown (circulation and after-heating) are not activated.

• Add-on " - Ci":

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• "Basic V - R" diagram:

Basic

-Ci

oil, gas

Basic

-AH

T1 or S6 (radiation sensor) for B asicV-R

Bypass

for

BasicV-R

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

storage 3 bottom: °C

Parameter storage 1 max. 60°C

sola

r-pump

Δ:

Date / Time storage 2 max. 60°C

sola

r-pump

Σ:

+Clocks storage 3 max. 60°C

reversin

valve 1 Δ:

+Service collector max. 130°C

reversin

valve 1 Σ:

OK OK + Menu (2 sec.)

Diff. temp. solar ON 8K

reversin

valve 2 Δ:

System selection -intern. heat exchanger Diff. temp. solar OFF 4K

reversin

valve 2 Σ:

Functions

storage tank priority...

Links

+1storage tank

+speed control

Extras

+2storage tanks

Manual operation

- 3storage tanks

- 1 collector

{BasicP

......

~BasicV

Choose with OK (2sec.)

{BasicV-AH {BasicV-R {BasicV-Ci

4.1.5.2 Internal heat exchanger, 3 storage tanks, 1 collector array, pump control

If, in the 'System selection' menu, the

points "intern. heat exchanger", "3 storage tank", "1 collector" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2, T1 and T3 or T1 and T4. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached by one of the differential temperatures, either solar circuit pump R1 is switched on for storage tank 1, R2 for storage tank 2 or R3 for storage tank 3. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of a storage tank with lower priority is met, the corresponding solar circuit pump is switched on. When a secondary storage tank is charged it is checked, at regular intervals (“storage tank priority...” -> “Test interval”), whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this is charged. Depending on the setting (parameter -> speed control -> R1, -> R2 and -> R3), solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank' (T2, T3 or T4) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

The additional functions shown (circulation and reheating) are not activated.

• Add-on " - Ci":

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Basic

-Ci

oil, gas

Basic

-AH

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

storage 3 bottom: °C

Parameter storage 1 max. 60°C

sola

r-pump

1 Δ:

Date / Time storage 2 max. 60°C

sola

r-pump

1 Σ:

+Clocks storage 3 max. 60°C

sola

r-pump

2 Δ:

+Service collector max. 130°C

sola

r-pump

2 Σ:

OK OK + Menu (2 sec.)

Diff. temp. solar ON 8K

sola

r-pump

3 Δ:

System selection -intern. heat exchanger Diff. temp. solar OFF 4K

sola

r-pump

3 Σ:

Functions

storage tank priority...

Links

+1storage tank

+speed control

Extras

+2storage tanks

Manual operation

- 3storage tanks

-1 collector

~BasicP

choose with OK (2sec.)

{BasicP-AH {BasicP-Ci {BasicV

......

4.1.6 Internal heat exchanger, 3 storage tanks, 2 collector arrays

4.1.6.1 Internal heat exchanger, 3 storage tanks, 2 collector arrays, valve control

If, in the 'System selection' menu, the

points "intern. heat exchanger", "3 storage tank", "2 collectors" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" diagram:

The regulator constantly records the differential temperatures between the

collector sensors T1 or T2 and the storage tank sensors T3, T4 or T5.

Depending on which

collector array and which storage tank first reaches the switch-on differential temperature (parameter: 'diff. temp. solar ON'), the pump R1 switches on and the 3-way valves R2, R3 and R4 are switched so that the corresponding collector array and the corresponding storage tank can be flown through. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar x OFF'). Then, if the switch-on requirement of a storage tank with lower priority is met, the 3-way valves are switched to charge the corresponding storage tank. When a secondary storage tank is charged it is checked at regular intervals (“storage tank priority...” -> “Test interval”) whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this will be charged.

When the storage tanks are charged, the option of switching to the other collector array is constantly checked. A requirement for this switch is that the temperature of the passive collector array must be an adjustable value (parameter: 'switch collect.') higher than that of the active array. The storage tank is charged regardless of which collector array is active until the value of the maximum storing temperature (parameter: 'storage tank x max.') is reached or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). If this is the case, the solar circuit pump and the switch valves are switched off.

Definition

: Collector array 1 and storage tank 1 are flown through when the 3-way valves

(R2, R3, R4) are in a de-energized state! When the 3-way valve R4 is in a de-energized state (R3 energized) storage tank 2 is charged!

Depending on the setting (parameter -> speed control -> R1), the solar pump’s speed control maintains the differential temperature between the active 'collector' (T1 or T2) and the 'lower part of the storage tank' temperature of the storage tank currently about to be charged (T3, T4 or T5) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C.

storage tank 1

collector field 1

collector field 2

storage tank 2

storage tank 3

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage 1 bottom: °C

OK OK

storage 2 bottom: °C Parameter storage 1 max. 60°C storage 3 bottom: °C Date / Time storage 2 max. 60°C

sola

r-pump

Δ:

+Clocks storage 3 max. 60°C

sola

r-pump

Σ:

+Service collector max. 130°C

valve collector Δ:

OK OK + Menu (2 sec.)

Diff. temp. solar ON 8K

valve collector Σ:

System selection -intern. heat exchanger Diff. temp. solar OFF 4K

valve stora

e1 Δ:

Functions

switch collect. 10K

valve stora

e1 Σ:

Links

+1storage tank

storage tank priority...

valve stora

e2 Δ:

Extras

+2storage tanks

+speed control

valve stora

e2 Σ:

Manual operation

- 3storage tanks

+1collector

- 2collector

~BasicV

choose with OK (2sec.)

T2 T3 T4T1T5

R2 R3

4.1.6.2 Internal heat exchanger, 3 storage tanks, 2 collector arrays, pump control

If, in the 'System selection' menu, the

points "intern. heat exchanger", "3 storage tank", "2 collectors" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" diagram:

The regulator constantly records the differential temperatures between the

collector sensors T1 or T2 and the storage tank sensors T3, T4 or T5.

Depending on which

collector array and which storage tank first reaches the switch-on differential temperature (parameter: 'diff. temp. solar1 ON' or 'diff. temp. solar2 ON'), either solar circuit pump R1 is switched on for collector array 1 or solar circuit pump R2 for collector array 2 and the 3-way valves R3 and R4 are switched so that the corresponding storage tank is charged. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar x OFF'). Then, if the switch-on condition of a storage tank with lower priority is met, the 3-way valves are switched to charge the corresponding storage tank. When a secondary storage tank is charged it is checked at regular intervals (“storage tank priority...” -> “Test interval”) whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this will be charged. When a storage tank is being charged it is also checked if the switch-on differential temperature of the passive collector array is reached. If this is the case, the pump of the passive solar circuit is also switched on. In the event of falling below the switch-off differential temperature (parameter: 'diff. temp. solar1 OFF' or 'diff. temp. solar2 OFF') the corresponding pump is switched off. If all storage tanks have reached their set maximum storing temperature, both solar circuit pumps and the 3-way valves are switched off.

Note: The parameters 'diff. temp. solar1 ON' and 'diff. temp. solar1 OFF' apply for all

storage tanks with regard to collector array 1. The parameters 'diff. temp. solar2 ON' and 'diff. temp. solar2 OFF' apply for all storage tanks with regard to collector array 2.

Depending on the setting (parameter -> speed control -> R1 or R2), the speed control of the individual solar pumps maintains the differential temperature between the corresponding 'collector' (T1 or T2) and the ‘lower part of the storage tank' temperature of the storage tank currently about to be charged (T3, T4 or T5) at the value of the parameter 'diff. temp. solar1 ON' or 'diff. temp. solar2 ON' or the absolute temperature of the 'collector' (T1 or T2) constant at a fixed temperature of 70°C.

Definition

: Storage tank 1 is charged when the 3-way valves (R3, R4) are in a de-energ ized

state! Storage tank 2 is charged when the 3-way valve R4 is in a de-energized state (R3 energized )!

storage tank 1

collector field 1

collector field 2

storage tank 2

storage tank 3

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector 1: °C Operating status collector 2: °C +Settings storage 1 bottom: °C

OK OK

storage 2 bottom: °C Parameter storage 1 max. 60°C storage 3 bottom: °C Date / Time storage 2 max. 60°C

sola

r-pump

1 Δ:

+Clocks storage 3 max. 60°C

sola

r-pump

1 Σ:

+Service collector max. 130°C

sola

r-pump

2 Δ:

OK OK + Menu (2 sec.)

Diff. temp. solar1 ON 8K

sola

r-pump

2 Σ:

System selection -intern. heat exchanger Diff. temp. solar1 OFF 4K

reversin

valve 1 Δ:

Functions

Diff. temp. solar2 ON 8K

reversin

valve 1 Σ:

Links

+1storage tank

Diff. temp. solar2 OFF 4K

reversin

valve 2 Δ:

Extras

+2storage tanks

storage tank priority...

reversin

valve 2 Σ:

Manual operation

- 3storage tanks

+speed control

+1collector

- 2collector

~BasicP

choose with OK (2sec.)

T2 T3 T4T1T5

R2 R3

4.1.7 Internal heat exchanger, 4 storage tanks, 1 collector array

4.1.7.1 Internal heat exchanger, 4 storage tanks, 1 collector array, valve control

If, in the 'System selection' menu, the points "intern. heat exchanger", "4 storage tank", "1 collector" and "Basic V" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic V" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2, T1 and T3, T1 and T4 or T1 and T5. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached by one of the differential temperatures, the pump R1 switches on and the 3-way valves R2, R3 and R4 are switched so that the corresponding storage tank is charged. If the storage tank currently about to be charged is the first storage tank on the storage tank priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of a storage tank with lower priority is met, the 3-way valves are switched to charge the corresponding storage tank. When a secondary storage tank is being charged it is checked at regular intervals (“storage tank priority...” -> “Test interval”), whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this will be charged. Depending on the setting (parameter -> speed control -> R1), the solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank' (T2, T3, T4 or T5) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Definition

: Storage tank 1 is charged when the 3-way valves (R2, R3, R4) are in a de-

energized state! Storage tank 2 is charged when the 3-way valve R3 is in a de-energized state (R2 energized)! Storage tank 3 is charged when the 3-way valve R4 is in a de-energized state (R2, R3 energized)!

Connecting diagram:

Menu navigation: (here for the scheme 'Basic V' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

storage 3 bottom: °C Parameter storage 1 max. 60°C storage 4 bottom: °C Date / Time storage 2 max. 60°C

sola

r-pump

1 Δ:

+Clocks storage 3 max. 60°C

sola

r-pump

1 Σ:

+Service storage 4 max. 60°C

reversin

valve 1 Δ:

OK OK + Menu (2 sec.)

collector max. 130°C

reversin

valve 1 Σ:

System selection -intern. heat exchanger Diff. temp. solar ON 8K

reversin

valve 2 Δ:

Functions

Diff. temp. solar OFF 4K

reversin

valve 2 Σ:

Links

+1storage tank

storage tank priority...

reversin

valve 3 Δ:

Extras

+2storage tanks

+speed control

reversin

valve 3 Σ:

Manual operation

+3storage tanks

- 4storage tanks

{BasicP ~BasicV

choose with OK (2sec.)

4.1.7.2 Internal heat exchanger, 4 storage tanks, 1 collector array, pump control

If, in the 'System selection' menu, the points "intern. heat exchanger", "4 storage tank", "1 collector" and "Basic P" are selected, the hydraulic diagram illustrated here is available for use as a basic system with the indicated variants.

• "Basic P" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2, T1 and T3, T1 and T4, or T1 and T5. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, either solar circuit pump R1 is switched on for storage tank 1, R2 for storage tank 2, R3 for storage tank 3 or R4 for storage tank 4. If the storage tank currently about to be charged is the first storage tank on the priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of a storage tank with lower priority is met, the corresponding solar circuit pump is switched on and the storage tank is charged until its switchoff criteria ('storage tank y max.' or 'diff. temp. solar OFF') are met. This process continues up to the lowest priority. When a secondary storage tank is being charged it is checked, at regular intervals (“storage tank priority...” -> “Test interval”), whether a storage tank with higher priority can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If a storage tank with higher priority reaches its switch-on temperature within this period, this will be charge. Depending on the setting (parameter -> speed control -> R1, -> R2, -> R3 and -> R4), solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank' (T2, T3, T4 or T5) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic P' )

Measuring values collector: °C Operating status storage 1 bottom: °C +Settings storage 2 bottom: °C

OK OK

storage 3 bottom: °C Parameter storage 1 max. 60°C storage 4 bottom: °C Date / Time storage 2 max. 60°C

sola

r-pump

1 Δ:

+Clocks storage 3 max. 60°C

sola

r-pump

1 Σ:

+Service storage 4 max. 60°C

sola

r-pump

2 Δ:

OK OK + Menu (2 sec.)

collector max. 130°C

sola

r-pump

2 Σ:

System selection -intern. heat exchanger Diff. temp. solar ON 8K

sola

r-pump

3 Δ:

Functions

Diff. temp. solar OFF 4K

sola

r-pump

3 Σ:

Links

+1storage tank

storage tank priority...

sola

r-pump

4 Δ:

Extras

+2storage tanks

+speed control

sola

r-pump

4 Σ:

Manual operation

+3storage tanks

- 4storage tanks

~BasicP

choose with OK (2sec.)

{BasicV

4.2 Systems with Plate Heat Exchanger

4.2.1 Plate heat exchanger, 1 storage tank

If, in the 'System selection’' menu, the points "Plate heat exchanger", "1 storage tank" and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R2 switches on and heats the solar circuit with the plate heat exchanger. The R2 speed control regulates the temperature of the solar flow (advance) (T1) to the "charging setpoint" value + 5 Kelvin. If the temperature level on the plate heat exchanger T3 reaches a value of at least 5 Kelvin more than the 'lower part of the storage tank' temperature T2 and if T3 is at least 3K above the parameter value “AH extern. threshold “ (charging below this value could otherwise lead to the unintentional activation of any installed external after-heating), R1 switches on with minimum speed and then regulates the temperature of the charging current to the preset value required (parameter: 'charging setpoint'). This happens as long as either the maximum storing temperature (parameter: ''storage max.') is reached or the differential temperature between T3 and T2 falls below a value of 3 Kelvin. The solar circuit pump R2 remains active until either the maximum storing temperature (parameter: ''storage max.') is reached or falls below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated if T3 is only 3Kelvin below the maximum charging temperature (parameter: 'Max. charging temp.'). If the charging circuit continues to heat up because of an erroneous function, R1 is also deactivated if the maximum charging temperature is reached. The additional functions shown (charging zones and after-heating) are not activated.

Warning: The parameter value “AH extern. threshold” is factory set to 0°C. This corresponds with the setting if no external after-heating is connected. If an external after-heating (e.g. heating cartridge) must be installed in your system, the parameter “AH extern. threshold” must be set accordingly.

• Add-on " - AH":

R4 and T4 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• Add-on " - CZ":

R3 and T5 enable a charging zone control to be created for charging in 2 thermal

layers. A detailed functional description of this add-on can be found on page 15.

• "Basic V - R" diagram:

or S6 (radiation sensor) for Basic-R

oil, gas

Basic-AH

if so with

external

after-heating

Basic

-CZ

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one other. Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp." and also "Differential temp.". The control devices are therefore dependent on this setting.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage bottom: °C

+Settings

charging temp. °C

OK OK

char

ge-pump

Δ:

Parameter

storage max. 70°C

char

ge-pump

Σ:

Date / Time

collector max.

130°

sola

r-pump

Δ:

+Clocks

Diff. temp. solar ON 8K

sola

r-pump

Σ:

+Service

Diff. temp. solar OFF 4K

OK OK + Menu (2 sec.)

charging temp. max.

115°

System selection -plate heat exchanger

charging setpoint 65°C

Functions

AH extern. threshold 0°C

Links

- 1 storage tank speed control

Extras

Manual operation ~Basic

choose with OK (2sec.)

{Basic-CZ

{Basic-CZ-AH

{Basic-AH {Basic-R

R4R3

4.2.2 Plate heat exchanger, 2 storage tanks

If, in the 'System selection’'

menu, the points "Plate heat exchanger", "2 storage tanks" and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2 or T1 and T3. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R2 switches on and heats the solar circuit with the plate heat exchanger. The R2 speed control regulates the temperature of the solar flow (advance) (T1) to the "Required loading temp." value + 5 Kelvin. If the temperature level on the plate heat exchanger T4 reaches a value of at least 5 Kelvin more than the 'lower part of the storage tank' temperature T2 or T3 and if T4 is at least 3K above the parameter value “AH extern. threshold “ in case the charging requirements are met for storage tank 1 (charging below this value could otherwise lead to the unintentional activation of any installed after-heating), R1 switches on with minimum speed and then regulates the temperature of the charging current at the corresponding preset value (parameter: 'Required loading temp. x'). This happens until either the maximum storing temperature (parameter: ''storage tank x max.') is reached or the differential temperature between T4 and T2 or between T4 and T3 fall below a value of 3 Kelvin. The solar circuit pump R2 remains active until either the maximum storing temperature (parameter: ''storage tank x max.') is reached or falls below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated when T4 is only 3 Kelvin below the maximum charging temperature (parameter: 'Max. charging temp. x'). If the charging circuit continues to heat up because of an erroneous function, R1 is also deactivated when the maximum charging temperature is reached.

Definition: Storage tank 1 is charged when the 3-way valve R3 is in a de-energized state!

The additional functions shown (charging zones and after-heating) are not activated. Warning: The parameter value “AH extern. threshold” is factory set to 0°C. This corresponds with

the setting when no external after-heating is connected. If an external after-heating (e.g. heating cartridge) must be installed in your system, the parameter “AH extern. threshold” must be set accordingly.

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• Add-on " - CZ":

R4 and T5 enable a charging zone control to be created for charging in 2 thermal

layers. A detailed functional description of this add-on can be found on page 15.

• "Basic - R" diagram:

In some cases the solar circuit pump must be controlled according to the solar radiation. For this reason, a S7 radiation sensor must be installed in the collector level. For control purposes T1 must be inserted between the collector and bypass. A detailed functional description of this add-on can be found on page 15.

or S7 (radiation sensor) for Basic-R

oil, gas

Basic-AH

if so with

externar

after-heating

Basic

-CZ

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage 1 bottom: °C

+Settings

storage 2 bottom: °C

OK OK

charging temp. °C

Parameter

storage 1 max. 70°C

char

ge-pump

Δ:

Date / Time

storage 2 max. 70°C

char

ge-pump

Σ:

+Clocks

collector max.

130°

sola

r-pump

Δ:

+Service

Diff. temp. solar ON 8K

sola

r-pump

Σ:

OK OK + Menu (2 sec.)

Diff. temp. solar OFF 4K

reversin

valve Δ:

System selection -plate heat exchanger

charging temp. max.

115°

reversin

valve Σ:

Functions

charging setpoint 65°C

Links

+2 storage tanks AH extern. threshold 0°C

Extras

Manual operation ~Basic

choose with OK (2sec.)

{Basic-CZ

{Basic-AH

{Basic-R

R4 R4

4.2.3 Plate heat exchanger, 3 storage tanks

If, in the 'System selection’'

menu, the points "Plate heat exchanger", "3 storage tanks" and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" system:

The regulator constantly records the differential temperature between the sensors T1 and T2, T1 and T3 or T1 and T4. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R2 switches on and heats the solar circuit with the plate heat exchanger. The R2 speed control regulates the temperature of the solar flow (advance) (T1) to the "Required loading temp." value + 5 Kelvin. If the temperature level on the plate heat exchanger T5 reaches a value of at least 5 Kelvin more than the 'Lower part of storage tank x’ temperature T2, T3 or T4 and if T5 is at least 3K above the parameter value “AH extern. threshold “ the charging requirements are met for storage tank 1 (charging below this value could otherwise lead to the unintentional activation of any installed external after-heating), R1 switches on with minimum speed and then regulates the temperature of the charging current at the corresponding required value (parameter: ‘charging setpoint x'). This happens until either the maximum storing temperature (parameter: ''storage tank x max.') is reached or the differential temperature between T5 and T2, T5 and T3 or T5 and T4 falls below a value of 3 Kelvin. The solar circuit pump R2 remains active until either the maximum storing temperature (parameter: ''storage tank x max.') is reached or below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated when T5 is only 3 Kelvin below the maximum charging temperature (parameter: 'Max. charging temp. x'). If the charging circuit continues to heat up because of an erroneous function, R1 is also deactivated when the maximum charging temperature is reached.

Definition

: Storage tank 1 is charged when the 3-way valves (R3, R4) are in a de-energ ized

state! Storage tank 2 is charged when the 3-way valve R4 is in a de-energized state (R3 energized)!

Warning:

The parameter value “AH extern. threshold” is factory set to 0°C. This corresponds with the setting when no external after-heating is connected. If external after-heating system (e.g. heating cartridge) must be installed in your system, the parameter “AH extern. threshold” must be set accordingly.

• "Basic - R" diagram:

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one other.

or S7 (radi ation sensor) for Basic-R

if so with

external

after-heating

Since with this diagram, speed controls are only useful when the objective is "absolute temperature", this control objective has been saved both in the settings "Absolute temp." and also "Differential temp.". The control devices are therefore dependent on this setting.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage 1 bottom: °C

+Settings

storage 2 bottom: °C

OK OK

storage 3 bottom: °C

Parameter

storage 1 max. 70°C charging temp. °C

Date / Time

storage 2 max. 70°C

char

ge-pump

Δ:

+Clocks

storage 3 max. 70°C

char

ge-pump

Σ:

+Service

collector max.

130°

sola

r-pump

Δ:

OK OK + Menu (2 sec.)

Diff. temp. solar ON 8K

sola

r-pump

Σ:

System selection -plate heat exchanger

Diff. temp. solar OFF 4K

reversin

valve 1 Δ:

Functions

charging temp. max.

115°

reversin

valve 1 Σ:

Links

+3 storage tanks charging setpoint 65°C

reversin

valve 2 Δ:

Extras

reversin

valve 2 Σ:

Manual operation ~Basic

choose with OK (2sec.)

{Basic-R

R1 R2 R4R3

4.2.4 Plate heat exchanger, buffer tank with fresh water function

If, in the 'System selection'

menu, the points "Plate heat exchanger", "Buffer tank with ...", "Fresh water funct." and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" system:

The regulator constantly records the differential temperature between the sensors T1 and T2. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R3 switches on and heats the solar circuit with the plate heat exchanger. If the temperature level on the plate heat exchanger T3 reaches a value of at least 5 Kelvin more than the 'Lower part of the storage tank' temperature T2 and if T3 is at least 3K above the parameter value “AH extern. threshold “ (charging below this value could otherwise lead to unintentional activation of any installed external after-heating), R1 switches on with minimum speed and then regulates the temperature of the charging current at the preset value (parameter: 'Preset charging temp.'). This happens as long as either the maximum storing temperature (parameter: ''storage max.') is reached or the differential temperature between T3 and T2 falls below a value of 3 Kelvin. The solar circuit pump R3 remains active until either the maximum storing temperature (parameter: ''storage max.') is reached or below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated when T3 is only 3 Kelvin below the maximum charging temperature (parameter: 'Max. charging temp.'). If the charging circuit continues to heat up because of an erroneous function, R1 is also deactivated when the maximum charging temperature is reached.

Important:

The control device for the fresh water function is not linked in the diagram. This

must be activated in the menu Service

→

Functions → “Fresh water at R2” ( -->:).

Settings: The temperature, which should be reached on the warm-water side, should be entered as the aim temperature. In the present diagram, the sensors must be set as follows: “Target temp. at: E6 (regulator)“ and “Feed line/st. upp.: E4 (regulator)“.

The additional values should not be changed in any event!!!

By controlling the speed of the "discharge pump" the solar regulator attempts to maintain the "hot water temperature" – irrespective of the volume flowing in the hot water pipe – at a constant temperature (Functions → Fresh water at R2 → "aim temperature") at the extraction points. If the "upper part of the storage tank" temperature falls below the value "aim temperature" + 5 Kelvin, the "aim temperature" is internally lowered by 5 Kelvin. This should prevent the storage tank from mixing. If the "Upper part of the storage tank" temperature again rises above the value "aim temperature" + 5 Kelvin, the "aim temperature" is internally increased again by 5 Kelvin. If the temperature at T4 falls below the set "Min. storage tank temp.", the discharge circuit pump is switched off. This means the control system is idle and will first become active again at values greater than the "Min. storage tank temp.".

The additional functions shown (charging zones and after-heating) are not activated. Warning: The parameter value “AH extern. threshold” is factory set to 0°C. This corresponds with

the setting when no after-heating system is connected. If after-heating (e.g. heating cartridge) must be installed in your system, the parameter “AH extern. threshold” must be set accordingly.

• Add-on " - AH":

R4 and T4 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

storage tank 1

oil, gas

Basic-AH

Basic

-CZ

if so with external after-heating

• Erweiterung " - CZ": R4 and T5 enable a charging zone control to be created for charging in 2 thermal layers. A detailed functional description of this add-on can be found on page 15.

• "Basic - R" diagram:

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage bottom: °C

+Settings

charging temp. °C

OK OK

storage top: °C

Parameter

storage max. 70°C Hot water temp.: °C

Date / Time

collector max.

130°

char

ge-pump

Δ:

+Clocks

Diff. temp. solar ON 8K

char

ge-pump

Σ:

+Service

Diff. temp. solar OFF 4K

dischar

e-pumpe Δ:

OK OK + Menu (2 sec.)

charging temp. max.

115°

dischar

e-pumpe Σ:

System selection -plate heat exchanger

charging setpoint 65°C

sola

r-pump

Δ:

Functions

AH extern. threshold 0°C

sola

r-pump

Σ:

Links

-buffer tank with... storage min. 25°C

Extras

speed control

Manual operation

-fresh water function

~Basic

choose with OK (2sec.)

{Basic-CZ {Basic-AH {Basic-R {Basic-R-CZ

T2 T3 T4

4.2.5 Plate heat exchanger, buffer tank with preheat storage tank

If, in the 'System selection’'

menu, the points "Plate heat exchanger", "Buffer tank with ...", "Pre-heating storage" and "Basic" are selected, the hydraulic diagram illustrated here is available for use as a basic system.

• "Basic" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R3 switches on and heats the solar circuit with the plate heat exchanger. If the temperature level on the plate heat exchanger T3 reaches a value of at least 5 Kelvin more than the 'lower part of the storage tank' temperature T2, R1 switches on with minimum speed and then regulates the temperature of the charging current at the required value (parameter: ‘charging setpoint'). This happens as long as either the maximum storing temperature (parameter: ''storage max.') is reached or the differential temperature between T3 and T2 falls below a value of 3 Kelvin. The solar circuit pump R3 remains active until either the maximum storing temperature (parameter: ''storage max.') is reached or falls below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated when T3 is only 3 Kelvin below the maximum charging temperature (parameter: 'Max. charging temp.'). If the charging circuit continues to heat up because of an erroneous function, R1 is also deactivated when the maximum charging temperature is reached. If the pre-heating storage temperature at T6 falls below the required temperature (parameter: 'Requir. pre-heat. st.') by 2 Kelvin and if the temperature in the buffer tank (T4) is at least 6Kelvin higher than the required temperature (parameter: ‘Requir. pre-heat. st.'), the circuit pumps R2 and R4 are switched on. The speed control of R2 ensures the charging temperature for the preheat storage tank (T5) is kept constant at the required temperature (Parameter: 'Requir. pre-heat. st.'). R4 runs with constant volume flowing. The preheating storage is charged until the temperature at T7 reaches the required temperature (parameter: 'Requir. pre-heat. st.') or the temperature at T4 has fallen below the value for the required pre-heating temperature plus 2 Kelvin. If one of these two conditions is met, the pumps R2 and R4 are switched off.

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage 1 bottom: °C

+Settings

charging temp. 1 °C

OK OK

storage 1 top: °C

Parameter

storage 1 max. 70°C charging temp. 2 °C

Date / Time

collector max.

130°

storage 2 top: °C

+Clocks

Diff. temp. solar ON 8K storage 2 bottom: °C

+Service

Diff. temp. solar OFF 4K

char

ge-pump

1 Δ:

OK OK + Menu (2 sec.)

charging temp.1 max.

115°

char

ge-pump

1 Σ:

System selection -plate heat exchanger

charging 1 setpoint 65°C

dischar

e-pump Δ:

Functions

requir. pre-heat. st. 50°C

dischar

e-pump Σ:

Links

-buffer tank with... speed control

sola

r-pump

Δ:

Extras

sola

r-pump

Σ:

Manual operation

+fresh water function

char

ge-pump

2 Δ:

-pre-heating tank

char

ge-pump

2 Σ:

~Basic

choose with OK (2sec.)

4.3 Systems for Supplementary Heating

4.3.1 Supplementary Heating with reverse raising, 1 combi storage tank,

internal heat exchanger

If, in the 'System selection’'

menu, the points "Supplementary Heating", "1 combi tank" and "int. heat exchanger" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" diagram:

As soon as the differential temperature between T1 and T2 reaches the set value for the switch-on differential temperature (parameter: 'diff. temp. solar ON'), the pump R1 is switched on. If the storage tank reaches its maximum storing temperature (parameter: 'storage max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'), the pump switches off. Depending on the setting (parameter -> speed control -> R1), solar pump’s speed control maintains the differential temperature between 'collector' (T1) and 'lower part of the storage tank‘(T2) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the 'collector' (T1) constant at a fixed temperature of 70°C. Supplementary heating is provided using the 3-way valve R3 and the sensors T3 and T4. If the differential temperature between T3 and T4 reaches the set value (parameter: 'Ret. flow incr. ON') the 3-way valve guides the heating return flow above the storage tank. The valve remains in this position until the differential temperature falls below the switch-off value (parameter: 'Ret. flow incr. OFF') again.

Definition

: Storage tank is not flown through when the 3-way valve R3 is in a de-energized

state (no return flow increase)!

The additional function shown (after-heating) is not activated.

• Add-on " - AH":

R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• "Basic - R" diagram:

In some cases the solar circuit pump must be controlled according to the solar radiation. For this purpose a radiation sensor S6 must be installed in the collector level. For control reasons T1 must be inserted between the collector and storage tank. A detailed functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

Basic-AH

T1 or S6 (radiation sensor) for Basic-R

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage bottom: °C

+Settings

storage middle: °C

OK OK

heating return flow: °C

Parameter

storage max. 60°C

sola

r-pump

Δ:

Date / Time

collector max. 130°C

sola

r-pump

Σ:

+Clocks

Diff. temp. solar ON 8K

reve

sing valve Δ:

+Service

Diff. temp. solar OFF 4K

reversin

valve Σ:

OK OK + Menu (2 sec.)

return flow incr. ON 4K System selection -supplementary heating return flow incr. OFF 2K Functions

speed control Links -1combi storage tank Extras

Manual operation +plate heat exchanger

- int. heat exchanger

~Basic

choose with OK (2sec.)

{Basic-AH {Basic-R

4.3.2 Supplementary Heating, 1 combi-storage tank, plate heat exchanger

If, in the 'System selection’'

menu, the points "Supplementary Heating", "1 combi tank" and "Plate heat exchanger" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" diagram:

The regulator constantly records the differential temperature between the sensors T1 and T2. If the set switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached, the solar circuit pump R2 switches on and heats the solar circuit with the plate heat exchanger. The R2 speed control regulates the temperature of the solar flow (advance) (T1) to the "Required loading temp." value +5 Kelvin. If the temperature level on the plate heat exchanger T3 reaches a value of at least 5 Kelvin more than the ‘lower part of the storage tank' temperature T2, R1 switches on with minimum speed and then regulates the temperature of the charging current at the required value (parameter: 'charging setpoint'). This happens until either the maximum storing temperature (parameter: ''storage max.') is reached or the differential temperature between T3 and T2 falls below a value of 3Kelvin. The solar circuit pump R2 remains active until the maximum storing temperature (parameter: ''storage max.') is reached or falls below the switch-off differential temperature of the solar circuit (parameter: 'diff. temp. solar OFF'). To protect the charging circuit from overheating, the solar circuit is deactivated when T3 is only 3 Kelvin below the maximum storing temperature (parameter: 'Max. charging temp.'). If the charging circuit continues to heat up because of an erroneous function R1 is also deactivated when the maximum storing temperature is reached. Supplementary heating is provided with the 3-way valve R3 and the sensors T5 and T6. If the differential temperature between T5 and T6 reaches the required value (parameter: 'Ret. flow incr. ON') the 3-way valve guides the heating return flow over the storage tank. The valve remains in this position until the differential temperature falls below the switch-off value (parameter: ' Ret. flow incr. OFF') again.

Definition

: Storage tank is not flown through when the 3-way valve R3 is in a de-energized

state (no return flow increase)!

The additional function shown (after-heating) is not activated.

• Add-on " - AH":

R4 and T4 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

• "Basic - R" diagram:

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one other.

Basic-AH

T1 or S7 (radiation sensor) for Basic-R

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage bottom: °C

+Settings

charging temp. °C

OK OK

storage top: °C

Parameter

storage max. 70°C storage middle: °C

Date / Time

Diff. temp. solar ON 8K heating return flow: °C

+Clocks

Diff. temp. solar OFF 4K

char

ge-pump

Δ:

+Service

charging temp. max. 115°

char

ge-pump

Σ:

OK OK + Menu (2 sec.)

charging setpoint 65°C

sola

r-pump

Δ:

System selection -supplementary heating return flow incr. ON 4K

sola

r-pump

Σ:

Functions

return flow incr. OFF 2K

reversin

valve Δ:

Links -1combi storage tank speed control

reversin

valve Σ:

Extras

Manual operation -plate heat exchanger

~Basic

choose with OK (2sec.)

{Basic-AH {Basic-R

T3 T4T1T5

4.3.3 Supplementary Heating, 2 storage tanks

If, in the 'System selection’' menu, the points "Supplementary Heating" and "2 storage tanks" are selected, the hydraulic diagram illustrated here is available for use as a basic system (basic) with the indicated variants.

• "Basic" system:

The regulator constantly records the differential temperature between the sensors T1 and T2 or T1 and T4. If the preset switch-on differential temperature (parameter: 'diff. temp. solar ON') is reached by one of the differential temperatures, either solar circuit pump R1 is switched on for storage tank 1 or solar circuit pump R2 for storage tank 2. If the storage tank currently about to be charged is the first storage tank on the priority list (parameter -> storage tank priority...), this is charged until it reaches its maximum storing temperature (parameter: 'storage tank x max.') or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). Then, if the switch-on condition of the secondary storage tank is met, the corresponding solar circuit pump is switched on. When the secondary storage tank is being charged it is checked, at regular intervals (“storage tank priority...” -> “Test interval”), whether the priority storage tank can be charged again. For this purpose the solar circuit pump is deactivated for a short period (“storage tank priority...” -> “Test period”). If the priority storage tank reaches its switch-on temperature within this period, this will be charged again. Supplementary heating is provided by the 3 way valve R3 and the sensors T4 and T5. If the differential temperature between T4 and T5 reaches the set value (parameter: 'Ret. flow. incr. ON') the 3 way valve guides the heating return flow over the corresponding storage tank. The valve remains in this position until the differential temperature falls below the switch-off value (parameter: 'Ret. flow. incr. OFF') again.

Definition

: Storage tank is not flown through when the 3-way valve R3 is in a de-energized

state (no return flow increase)!

The additional function shown (after-heating) is not activated.

• Add-on " - AH":

R4 and T6 combined with an oil or gas boiler can provide after-heating. A detailed

functional description of this add-on can be found on page 15.

To prevent erroneous settings, the described switch-on and switch-off values are interlocked, this means they can be set only at a specific value to one another.

storage tank 1

storage tank 2

Basic-AH

Connecting diagram:

Menu navigation: (here for the scheme 'Basic' )

Measuring values

collector: °C

Operating status

storage 1 bottom: °C

+Settings

storage 2 bottom: °C

OK OK

storage 2 top: °C

Parameter

storage 1 max. 60°C heating return flow: °C

Date / Time

storage 2 max. 60°C

stora

e-pump1 Δ:

+Clocks

Diff. temp. solar ON 8K

stora

e-pump1 Σ:

+Service

Diff. temp. solar OFF 4K

stora

e-pump2 Δ:

OK OK + Menu (2 sec.)

return flow incr. ON 4K

pump

storage2 Σ:

System selection -supplementary heating return flow incr. OFF 2K

reversin

valve Δ:

Functions

storage tank priority...

reversin

valve Σ:

h Links +1combi storage tank +speed control Extras - 2storage tank Manual operation

~Basic

choose with OK (2sec.)

{Basic-AH

T2 T3 T4

5 Functions

Functions enable the pre-programmed solar systems (see chapter 4) to be individually adapted to your system. Thus the system regulator can implement special solutions and "develop" with the system’s add-ons.

Pre-programmed solar systems and functions can access and evaluate the same sensors. Functions can even access the outputs already “occupied” by the system control. Thus pre-programmed output controls can be supplemented or improved by functions. If several functions access the same output, a logical link of the switching conditions is required. These 'Links' are explained in more detail in chapter 6.

Examples of common adjustments or add-ons, which arise from the functions are explained in more detail in chapter 7 ("System examples").

5.1 Thermostats

The system regulator has 5 adjustable thermostats, with which individual outputs can be controlled depending on the temperature. To activate a thermostat, select the desired thermostat in the menu 'Settings -> 'Service' -> 'Functions'

-> 'thermostats' and press the OK button for 2 seconds ( -->:). The most important Settings of each activated thermostat can be customized. Most importantly, in addition to selecting the required temperature input and output to be controlled, the switching thresholds can be set. Both the switch-on and switch-off temperature are factory preset to 20°C. The thermostat cannot function with these values because at least one hysteresis (differential temperature between switch-on and switch-off value) of 1°C must be present.

A switch-on temperature higher or lower than the switch-off temperature can be selected. Thus, both cooling and heating functions can be implemented.

The sensor inputs "E1 (regulator)" to "E7 (regulator)" are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" are available on each of the four possible add-on devices (for additional IO boxes see chapter 9.1). The sensor outputs "R1 (regulator)" to "R4 (regulator)" are available on the regulator or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices.

switch-on temperature

switch-off temperature

°C

hysteresis c ontrol

(for cool ing applic ations)

hysteresis c ontrol

(for heating applic ations)

5.2 Differential Thermostats

In addition to simple thermostats, the system regulator also provides 4 differential thermostats. This function is for implementing the hysteresis control for differential temperatures. To activate a differential thermostat, select the desired differential thermostat and press the OK button for 2 seconds ( -->:). in the menu 'Settings -> 'Service' -> 'Functions' -> 'diff. thermostats'. The most important Settings of each activated thermostat can be customized. In addition to selecting the required temperature inputs W (W = warmer) and C (C = colder) and output to be controlled, the switching conditions can also be set here. The switch-on condition of 8 Kelvin (i.e., ‘input W’ around 8 Kelvin warmer than ‘input C’) and a switch-off condition of 4 Kelvin (i.e. ‘input W’ only 4 Kelvin warmer than ‘input C’) are factory preset. These values can be changed within certain limits and are interlocked (switch-on condition must be at least 2 Kelvin greater than the switch-off condition) to prevent erroneous setting.

Since differential thermostats are often used to implement recharging functions, the system regulator also provides two extra adjustable threshold values (min. temp. input W and max. temp. input C). These threshold values should prevent, for example, that storage tank 1 cools down too much or storage tank 2 overheats when recharging storage tank 1 (temperature input W) to storage tank 2 (temperature input C). If such threshold monitoring is not desired, the values for min. temp. input W and max. temp. input C must be set outside the expected temperature progression.

The inputs "E1 (regulator)" to "E7 (regulator)" are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" are available on each of the four possible add-on units (for additional IO boxes see Chapter 9.1). The outputs "R1 (regulator)" to "R4 (regulator)" are available on the regulator o r the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices.

5.3 Radiation Switches

The regulator has 2 adjustable radiation switches, with which the individual radiation-dependent outputs can be controlled. To activate the radiation select the required radiation in the menu 'Settings -> 'Service' -> 'Functions'

-> 'radiation switches' and press the OK button for 2 seconds ( -->:). To adjust the individual radiation switches as you please the most important Settings can be changed for each activated radiation switch. The most important Settings of each individual radiation switch can be customized. Above all, in addition to selecting the required radiation inputs and outputs to be controlled, the radiation switch’s threshold can be set. The switch-on radiation and switch-off radiation are factory preset to 500W/m

.The radiation switch does not function with these values because a hysteresis (radiation difference between switch-on and switch-off value) of 10 W/m² must be present. The switchon radiation greater or smaller than the switch-off radiation can be selected. Thus, the different switching functions (activity above or activity below a specified radiation) can be implemented.

The sensor inputs "E6 (regulator)" to "E7 (regulator)" are available on the regulator.

The relay outputs "R1 (regulator)" to "R4 (regulator)" are available on the regulator or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices.

5.4 Time Functions

The system regulator provides 3 independent time functions to implement the time-controlled functions (time clocks). To activate a time function, select the required time function in the menu 'Settings -> 'Service' -> 'Functions' -> 'Time functions' and press the OK button for 2 seconds ( -->:). The most important Settings for each activated time function can be individually customized. In addition to selecting the output to be controlled, each clock can be programmed up to 5 different switching times for work days (Mo to Fr) and an additional 5 switching times for weekends (Sa and Su).

Note:

When setting the individual time windows, ensure the switch-on time is always

before the corresponding switch-off time. If a time function must be active between 9:00 P.M: and 6:00 A.M., for example, 2 time windows

must be programmed: 9:00

P.M.– 11:59 P.M. and 12:00 A.M.– 6:00 A.M.!!!

The relay outputs "R1 (regulator)" to "R4 (regulator)" or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices.

5.5 Pipe Coll./Interval

The system regulator provides 2 interval functions to implement the interval switches. In some system arrangements a low minimum flow rate, for example, may be required to record real measuring values. Such an arrangement can be found, for instance, when using vacuum pipe collectors. Since the temperature sensor in pipe collectors is usually only installed in the collector line, the measured collector temperature is often far below the real pipe temperature when the pumps are stationary. Due to their high efficiency the collector can, however, quickly reach high temperatures. This function in the solar pump is switched on in adjustable intervals to transport the temperature from the pipes to the sensor. This clearly improves the system’s switching procedure. To activate an interval function, select the required interval function in the menu 'Settings -> 'Service' - > 'Functions' -> 'pipe coll/interval' and press the OK button for 2 seconds ( -->:). In addition to the output control, the interval and on-time period is adjustable. This facilitates the simple implementation of different interval requirements.

The interval outputs "R1 (regulator)" to "R4 (regulator)" are available on the regulator or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices (for additional IO boxes see ch. 9.1).

5.6 Heat Meters

The regulator provides 3 independent heat meters. The corresponding thermal output is calculated via a volume measuring component with a pulse output (see page 7 for connection) and the differential temperatu

re between the supply and return line, and the total thermal quantity is constantly added up. The user can record the total thermal quantity over a chosen period and then reset this amount again. To reset, press the OK button (hold for 2 seconds). To activate a heat meter, select the required meter in the menu 'Settings -> 'Service' -> 'Functions' -> Heat meters' and press the OK button for 2 seconds ( -->:).

After activating a heat meter several required settings must be performed. Depending on the flow meter used, its scale must be entered in impulses per liter or liters per pulse. For calculating density and heat capacity, an entry for the mixing ratio of anti-freeze and water is required. In this function, the regulator’s micro controller factors in the material data of the often-used Tyfocor L solar fluid (propylene glycol). Differences in the calculation of yield may occur if another solar fluid is used. To record the thermal quantity of a pure water cycle, the percentage of glycol must be set to 0%.. Depending on which thermal quantity is to be specified in the system, the required measured data (supply line, return line temperature, flow rate) must be assigned to the corresponding sensor inputs. Please observe that the heat meter’s display is restricted to 15´000kWh. This resets to 0kWh not after 99´999kWh, but after 15´000kWh.

5.7 Additional Measuring Values

In addition to the control-relevant measuring values, the system regulator can also graphically display other measuring values. As additional measuring values, up to 2 temperature, 2 radiation and 2 flow rate values can be queried. To activate additional measuring values, select the required measuring value in the menu 'Settings -> 'Service' -> 'Functions' -> 'Additional measured data' and press the OK button for 2 seconds ( -->:). If an additional measuring value is activated, the relevant inputs - and thus sensors – must be assigned to it. The scale of the flow meter used must also be entered in impulses per liter or liters per impulse for measuring flow rate values. Please note that the flow rate display is restricted to 50´000l. This resets to 0 liters not after 99´999 l but after 50´000 l.

The sensor inputs "E1 (regulator)" to "E7 (regulator)" for temperature and flow rate values are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" are available on each of the four possible add-on devices (for additional IO boxes see ch.

9.1). The two inputs "E6 (regulator)" and "E7 (regulator)" for radiation values are available on the regulator.

5.8 Collector Temperature Limitation

If no energy is consumed from the storage tank over a longer period of time during a high solar irradiance, the temperatures increase in the solar circuit. Now, the collector’s cooling function, attempts to prevent evaporation of the heat transfer medium in the collector array. The system losses in the collector circuit are deliberately raised by heating the heat transfer medium in the collector at reduced pump speed and operating the collector at a lower efficiency. To activate the collector temperature limitation press the OK button for 2 seconds ( -->:) in the menu 'Settings -> 'Service' -> 'Functions' -> 'collector temp. limit.'

Function:

If the temperature in the storage tank with the lowest priority reaches the set value 'Active

from storage tank x°C', (recommended value: “storage tank max” temperature – 7K) the collector

temperature limitation becomes active. Then the solar circuit pump is switched off. Since the solar circuit does not release heat via the storage tank, the collector temperature is automatically increased. When the set collector temperature ('collector temp.') is exceeded, the solar circuit pump is switched on again and operated with adjusted speed. Only when the temperature on the collector sensor has decreased by 10 Kelvin of the set value ('collector temp.') is the solar circuit pump switch off again. If the collector temperature now increases again, the process just described is carried out again by the control system. This is repeated as long as either the storage tank temperature limitation takes effect or the temperature in the collector rises to 130°C.

Evaporation of the heat transfer medium must be expected by temperatures greater than 130 °C in the collector circuit. For this reason, the control system ensures safe deactivation of the solar circuit pump. Returning to normal operation – that is, without implementing the described regulating function of the collector temperature limitation – is performed after the storage tank temperature has fallen to the value 'Active from storage tank x °C' – 2K.

Note:

This function does not affect the storage tank temperature limitation ('storage tank max')

set in the 'Parameters' menu. The storage tank temperature limitation has priority and switches off the solar circuit pump when the set maximum storing temperature is reached. Therefore, when changing the settings ensure that the value 'Active from storage tank x°C' is sufficiently below the value 'storage max.' (Settings -> Parameters).

When using several storage tanks the temperature sensor of the storage tank with the lowest priority must be queried under 'input St.'. When using two separate collector surfaces, it is helpful to check the temperature sensor of the collector array in a western direction under 'input coll.. The corresponding solar circuit pump must always be selected under 'output', never a switch valve.

The sensor inputs "E1 (regulator)" to "E7 (regulator)" for the storage tank temperature are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" are available on each of the four possible add-on devices (for additional IO boxes see ch.

9.1).

5.9 DVGW Heating

This function can implement the DVGW guideline to protect against legionella growth. For this purpose, the regulator monitors the temperature at the lowest measuring point of the drinking water storage tank ('temp. input') and ensures that these are raised to the set temperature level (adjustable: 60°C-75°C) at least once a day. Activate the DVGW heating in the menu 'Settings -> 'Service' -> 'Functions' -> 'DVGW heating‘ by pressing the OK button for 2 seconds ( -->:).

Note:

When setting the temperature it must be ensured that this temperature can also be

reached by the after-heating device used!

If the required temperature ('Heating temp.') has not been reached by the solar single feed within the time window (12:00 P.M. until 'Heating-up period'), the storage tank is circulated to the set 'Heating-up period' (sensibly in the evening) by a circulation pump ('output 1') in order to ensure that the entire contents of the storage tank are heated. The actual heating of the storage tank during the circulation is often done by an independent after-heating function of the boiler. With systems in which the afterheating device (e.g. a conventional after-heating system, after-heating electric heating, etc.) has to be controlled by the system regulator itself, in addition to the circulation output ('output 1'), there is an output ('output 2') for after-heating. If this heating output is not required (independent after-heating function of the boiler), this selection window must be blank: 'output 2: -- (----)'

If the required heating temperature is reached within the time window (0:00 until 'Heating-up period'), DVGW heating is neither required and nor is energetically practical. The regulator detects this independently and does not perform any additional heating.

Note:

To prevent permanent heating in the event of erroneous system design (required

temperature cannot be reached) the regulator stops every DVGW heating at 12:00 P.M. at the latest. For this reason the heating-up period should not be programmed too late! An ideal heating-up period would be in the early evening.

The sensor inputs "E1 (regulator)" to "E7 (regulator)" are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" are available on each of the four possible add-on devices (for additional IO boxes see ch. 9.1). The relay outputs "R1 (regulator)" to "R4 (regulator)" or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices.

5.10 Synchronous Output

This function helps allocate a second output to any chosen output, which should switch synchronously. This link is often called a parallel output. Both the outputs of the regulator itself and the outputs of the four possible add-on units (for additional IO boxes see chapter 9.1) can be used. The synchronous output is activated in the menu 'Settings -> 'Service' -> 'Functions' -> 'Synchronous output' by pressing the OK button for two seconds ( -->:).

The outputs "R1 (regulator)" to "R4 (regulator)" or the outputs "R1 (IOBox)" to "R3 (IOBox)" on each of the four possible add-on devices (for additional IO boxes see Ch. 9.1) are available.

5.11 Frost Protection

A mixture of water and a special non-toxic anti-freeze is commonly used as the heat transfer medium in the solar circuit. Depending on the mixing ratio of this solar fluid with water frost protection temperatures of at least -20 °C are possible. In southern European countries or places where the solar circuit is emptied during frost periods (holiday and weekend homes, camping areas) water can also be used alone as a heat transfer medium. To reach a safe level of frost protection, the collector can be kept at the required temperature with the heated storage tank water. If it falls below a frost protection temperature of +4°C on the set sensor (sensibly collector sensor) an adjustable output is switched on for the circulating pump (sensibly solar circuit pump). The switch-off hysteresis is factory set and switches the pump off again when a temperature of +6°C is reached at the sensor.

Note:

Please activate this function only when you are certain that only water has been

used as a heat transfer medium and that therefore there is the risk of frost for the solar circuit. This function enables operation of a solar heating system without antifreeze only for very specific applications. Corresponding safety-related equipment may need to be installed and measures against frost may need to be taken.

The frost protection is activated in the menu 'Settings -> 'Service' -> 'Functions' -> 'Frost protection' by pressing the OK button for two seconds ( -->:).

The sensor inputs "E1 (regulator)" to "E7 (regulator)" are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)" on each of the four possible add-on devices (for additional IO boxes see ch. 9.1) are available. The "R1 (regulator)" to "R4 (regulator)"relay outputs or the outputs "R1 (IOBox)" to "R3 (IOBox)" on each of the four possible add-on devices are available.

5.12 Fresh Water at R2

With this function a fresh water function/fresh water station (heating of domestic hot water with the flow heater principle) is possible. This option for generating domestic hot water has the advantage that larger quantities of hot water must not be stored for use (legionella problem, heat losses, ...).

The fresh water function is activated in the menu 'Settings -> 'Service' -> 'Functions' -> 'Fresh water at R2' by pressing the OK button for two seconds ( -->:).

Function:

By controlling the speed of "pump R2" the solar regulator attempts to keep the hot water temperature (sensor allocation via “Target temp. at E?“) – irrespective of the volume flowing in the hot water line – at a constant temperature (Functions → Fresh water at R2 → "aim temperature: x°C") at the extraction points. If the temperature at "Supply line/st. upp" falls below the value for "aim temperature" +5 Kelvin, the "aim temperature" will be lowered internally by 5 Kelvin. This should prevent the storage tank from being mixed. If the temperature at "Supply line/st. upp" rises above the value for "aim temperature" +5 Kelvin again, the "aim temperature" is increased again internally by 5 Kelvin.

Important:

The values "P fallend", "P steigend", "I", "I unten/stg. " record the control behavior

and should not be changed in any event !!!

6 Links

This menu window is shown in the menu only when a link of selected functions is required or possible !!!

With the help of the 'Links' menu different functions, which access the same output can be logically linked together. With these links the conditions for operation of an output can be programmed individually.

The system regulator automatically detects whether several functions access the same output and then displays these for selection in the 'Links' menu. The individual logical links were deliberately made very simple. The system regulator provides an easy to understand linguistically-formulated logic for programming.

The following example should display how a link can be created or changed:

In this case the system regulator has detected two linked switch outputs [R3 (regulator) and R4 (regulator)] and provides these for selection. In addition to the system control, the functions thermostat 1 and Time function 1 also access the output R3. As standard (without the links being changed) all functions of a switch output are linked with or. In our example this would mean that system control, thermostat 1 and Time function 1 can each activate the output R3 independently of one other. In this example, however, R3 must be programmed so that R3 switches on when the system control requires this within a specific time window or when a specific temperature is reached.

So the link must be changed so there is the following linguistically formulated logic:

Switch R3 (regulator) 'on' if: the System control wants to switch 'on' and the Time function 1 wants to switch 'on' or the thermostat 1 wants to switch 'on.

To move a function within the logic this must be selected by pressing the OK button for 2 seconds (choice box flashes) and it can then be moved up or down with the

buttons. To save the desired position in the logic, press OK for 2 seconds (choice box no longer flashes). To change a selected type of link (and/or) press the OK button for 2 seconds.

Note: The system regulator checks the individual link requirements in the created sequence. Priority links (e.g. in digital technology by brackets) have not been created to ensure operation is not unnecessarily complicated.

System selection Functions

Links

R3 r e gulat o r

R4 r e gulat o r

OK + Menu

(2 sec)

M anual op e ration

R3 (regulator) 'on' , if: System control 'on' or Therm ostat 1 'on' or

Time function 1 'on'

R3 (regulator) 'on' , if: System control 'on' or Therm ostat 1 'on' or

Time function 1 'on'

R3 (regulator) 'on' , if: System control 'on' or Therm ostat 1 'on' or

Time function 1 'on'

Therm ostat 1 'on'

R3 (regulator) 'on' , if: System control 'on' or

Time function 1 'on' or

Therm ostat 1 'on'

R3 (regulator) 'on' , if: System control 'on' or

Time function 1 'on' or

Therm ostat 1 'on'

R3 (regulator) 'on' , if: System control 'on' or Tim e fun ction 1 'on' or

Therm ostat 1 'on'

R3 (regulator) 'on' , if: System control 'on' and Tim e fun ction 1 'on' or

(2 sec)

choice box flashes!

(2 sec)

7 System Examples

This chapter shows, with the help of several examples, how system adjustments/expansions can be implemented with the help of the functions explained in chapter 5. Due to the large number of possible systems, only a few examples can be dealt w ith here. However, many other adjustments can be made using the same layout plan.

7.1 Circulation Function

In some layout plans (chapter 4) a circulation function (-Ci) is already integrated. If the layout plan you selected does not provide this function, it can be programmed very simply with the help of a thermostat function. To implement a simple circulation function you need only one of the four thermostat functions (chapter 5.1) and an available input and output (called Tx and Rx in the adjacent diagram).

Function:

If the temperature in the circulation circuit (Tx) falls below a particular value the circulation pump (Rx) is activated and transports hot water into the circuit until the switch-off temperature is reached.

Implementation

: Open the menu item 'Settings -> 'Service' -> 'Functions' -> 'thermostats' and activate an available thermostat ( --2sec OK-->:). Then under Settings, enter the desired switch-on and switch-off temperature as well as the terminal position of the temperature sensor and the circulation pump.

Important:

To prevent erroneous measurements because the pipe is conducting heat, you

should maintain a minimum distance of 1.50m to the storage tank when installing the sensor.

This simple function can be defined more precisely by linking it with other functions. Possibilities, for example, include a temporal link using a time clock or an additional query of the storage tank temperature. These function expansions are also possible when using a preprogrammed circulation function (system selection '- Ci'). Such a combination ensures that the

circulation period is reduced to a minimum. This saves electrical energy for the operation of the pump, reduces circulation losses in the pipelines and improves the thermal stratification in the domestic water storage tank. The circulation losses in single-family homes can easily account for 10 to 30 % of all the energy required for providing hot water.

With time clock:

With the help of the time clock, the time of the circulation function can be limited. With the system regulator it is possible to set up to 10 different switching times, during which the circulation function is authorized. (e.g. 5:30 A.M.– 6:30 A.M.; 11:45 A.M.– 1:30 P.M.; etc.) Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> Time functions' and activate an available switch function ( --2sec OK-->:). Then under Settings enter the desired switching times and the terminal position of the circulation pump. Since two different functions now access the circulation pump a logical link of these functions is required (see chapter 6). Under 'Settings' -> 'Service' -> 'Link' the output used for the circulation pump (called Rx here) must now be programmed as follows:

Rx ( ....... ) 'on' , if:

Therm os tat x 'on' an d Time function x 'on'

Rx (regulator) 'on' , if: System control 'on' an d Time function x 'on'

by using the self-programmed Circulation function:

by using the pre-programmed Circulation function:

With storage tank temperature control: An additional check of the differential temperature between circulation circuit (Tx) and the upper storage tank temperature (Ty) can ensure that the circulation function is activated only when the temperature of the water in the storage tank is sufficiently higher than that of the water in the circulation circuit.

If your storage tank still needs to be kept above the circulation temperature with a corresponding after-heating function this function expansion is of no significance.

Implementation

: Open the menu items 'Settings' -> 'Service' -> 'Functions' -> 'diff. thermostats' and activate one available diff.thermostat ( --2sec OK-->:). Then under Settings enter the desired switch-on and switch-off differential as well as the terminal positions of the temperature sensors (Tx and Ty) and the circulation pump. Min.temp input.W and max. temp input C are not required with this application and should therefore be selected so that they are outside the expected temperature range. Since three different functions now access the circulation pump a logical link of these functions is required (see chapter 6). Under 'Settings -> 'Service' -> 'Link' the output used for the circulation pump (called Rx here) must now be programmed as follows:

7.2 Stop after-heating in the Morning

Depending on your personal usage profile, it may be energetically pratcial to stop the after-heating contained in the layout plan in the morning hours. This should prevent the storage tank, for example, from being reheated by a morning shower and thus reducing the solar yield during the day. This Stopping after-heating is implemented with the help of a simple time function (chapter 5.4). To still be able to ensure a specific basic temperature in the storage tank and therefore a minimum level of comfort a thermostat function (chapter 5.1) must also be programmed. For implementing, you do not need any additional inputs or outputs, just access the existing inputs and outputs of the after-heating system (called Tx or Rx in the adjacent diagram).

Function:

If the temperature "Upper part of the storage tank" (Tx) falls below the set after-heating value (parameter "After-heating ON"), the control system checks if the time requirement is met for normal operation (e.g. normal operation from 11:00 A.M. to 11:59 A.M.). If the current time is outside this time window, the control system checks if the temperature has fallen below the minimum comfort level. Outside this time window the after-heating pump (Rx) is therefore activated only if it falls below the minimum comfort temperature. When the "switch-off temperature" is reached on the storage tank sensor (Tx) the after-heating pump is switched off again. Within the time window the after-heating works as described in the layout plan.

Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'Time functions' and activate an available Time function ( --2sec OK-->:). Then under Settings enter the desired time window (time without stoppage) and also the terminal position of the after-heating pump. Now open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'thermostats' and activate an available thermostat ( --2sec OK-->:). Then under Settings enter the desired switch-on and switch-off temperatures and also the terminal positions of the temperature sensor (Tx) and the after-heating pump.

Rx ( ....... ) ' on ' , if:

Therm ostat x 'on' an d Dif.Therm o. x 'on' and Time function x 'on'

Rx (regulator) 'on' , if: System control 'on' an d Dif.Therm o. x 'on' and Time function x 'on'

by using the self-programmed Circulation function:

by using the pre-programmed Circulation function:

Example:

thermostat for minimum comfort temperature: switch-on temp. 50°C ; switch-off temp. 60°C temp. input: E3 (regulator) ; output: R4 (regulator)

Time function Times Mo to Fr: from 11:00 A.M. to 11:59 P.M. Times Sa and Su: from 11:00 A.M. to 11:59 P.M. output: R4 (regulator)

Note:

When setting the individual time windows ensure that the switch-on time is always before the corresponding switch-off time. So if a time function must be active between 11:00 A.M. and 4:00 A.M., for example, 2 time windows

must be programmed: 11:00 A.M: – 11:59 P.M.

and 12:00 A.M.– 4:00 A.M.!

Since two functions and the "NH" layout plan now access the after-heating pump a logical link of these functions is required (see chapter 6). Under 'Settings' -> 'Service' -> 'Link' the output used for the after-heating pump (R4 (regulator) in the above example) must now be programmed as follows:

7.3 Supplementary Heating

In the system selection (chapter 4) several layout plans are already pre-programmed for the supplementary heating. If the layout plan you selected does not provide this function it can be programmed very simply with the help of a differential thermostat. To enable supplementary heating you need only one of the four differential thermostat functions (chapter 5.2), two available inputs and an available output (called Tx, Ty and Rx in the adjacent diagram).

Function:

If the temperature in the storage tank (Tx) is an adjustable differential higher than that of the heating return flow (Ty), the 3-way valve (Rx) switches the return flow via the storage tank. This means the return flow temperature increases and energy is saved in the heating system.

Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'diff. thermostats' and activate an available diff.thermostat ( --2sec OK-->:). Then under Settings enter the desired switchon and switch-off differential and also the terminal positions of the temperature sensors (Tx and Ty) and the 3-way valve. With a corresponding entry of min.temp input W, excessive cooling of the storage tank can be prevented. In the event of falling below this temperature in the storage tank, the function of the supplementary heating is deactivated. Max.temp input C is not needed with this application and should therefore be selected so that it is outside the expected temperature range.

R4 (regulator) 'on' , if: System control 'on' and Time function 1 'on' or Therm ostat 1 'on'

7.4 Solid Fuel Boilers

In some layout plans (chapter 4) an after- function for solid fuel boilers (-SFH) is already integrated. If the layout plan you selected does not provide this function it can be programmed with the help of three thermostat functions (chapter 5.1). To do this you also need two available inputs and an available output (called Tx, Ty and Rx in the adjacent diagram).

It is also possible to "upgrade" an after-heating system (-AH) contained in the layout plan to a after-heating system for solid fuel boilers (-SFH) with the help of two thermostat functions (chapter 5.1). To do this you then need only one available input (called Ty in the adjacent diagram).

Function:

If the storage tank temperature (Tx) falls below a specific value, the control system automatically checks if the solid fuel boiler has reached the set minimum temperature on the boiler sensor (Ty). Only when this is the case will the circulating pump (Rx) be switched on. When the "switch-off temperature" is reached on the storage tank sensor (Tx) the circulating pump is switched off again. During the after-heating process the control system also continuously checks the temperature of the solid fuel boiler. If the boiler exceeds its set Max or Min limit, the circulating pump will also switch off.

Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'thermostats' and activate three or, to upgrade a preset"-AH", only two available thermostats ( --2sec OK-->:). Then under Settings enter the desired switch-on and switch-off temperatures and also the terminal positions of the temperature sensors (Tx and Ty) and the circulating pump.

Example: for storage tank monitoring thermostat1: switch-on temp. 45°C ; switch-off temp. 55°C temp. input: E6 (regulator) ; output: R4 (regulator)

(this first point does not apply when upgrading a preset "-AH")

for boiler control (Min limit) thermostat2: switch-on temp. 50°C ; switch-off temp. 48°C temp. input: E7 (regulator) ; output: R4 (regulator) for boiler control (Max limit) thermostat3: switch-on temp. 88°C ; switch-off temp. 90°C temp. input: E7 (regulator) ; output: R4 (regulator)

Since three functions (or two functions with "NH" layout plan) now access the circulating pump, a logical link of these functions is required (see chapter 6). Under 'Settings -> 'Service' -> 'Link' the output used for the circulating pump (R4 (regulator) in the above example) must now be programmed as follows:

R4 (regulator) 'on' , if: Th erm os tat 1 'o n' and Therm ostat 2 'on' and Th erm os tat 3 'o n'

R4 (regulator) 'on' , if: System control 'on' and Therm ostat 1 'on' and Therm ostat 2 'on'

without contained "AH": upgrade a contained "AH":

7.5 Recharging Storage Tanks

In the case of layout plans with several storage tanks it is very easy to implement storage tank recharging with the help of a differential thermostat. To enable this recharging function you need only one of the four differential thermostat functions (Chapter 5.2), two available inputs and one available output (called Tx, Ty and Rx in the adjacent diagram).

Function

: If storage tank X has been discharged to such an extent that the differential temperature between storage tank X (upper part) and storage tank Y (lower part) exceeds a set value, the circulating pump Rx is activated and heat is therefore recharged from storage tank Y to X. Depending on the type of individual storage tanks this recharging can be done directly or via a heat exchanger.

Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'diff. thermostats' and activate an available diff. thermostat ( --2sec OK-->:). Then under Settings enter the desired switch-on and switch-off differential and also the terminal positions of the temperature sensors (Tx and Ty) and the recharging pump (Rx). With a corresponding entry of min.temp input.W and max.temp input C, excessive cooling of storage tank Y or overheating of storage tank X can be prevented. In the event of going above or below one of these temperature values, the function of the storage tank recharging is deactivated again.

Speicher

7.6 Swimming Pool Heating

From the point of view of the solar heating system, a swimming pool is nothing more than a storage tank (normally with the lowest priority). One of the preprogrammed layout plans can therefore be accessed. Tx and Rx are the temperature sensor and pump of the "other storage tank" and are specified by the selection of the layout plan (with the adjacent diagram Rx = R2 and Tx = T3). The ‘storage tank lower part’ temperature sensor of the "other storage tank" (Tx) should ideally be positioned in the swimming pool. If this is not possible for structural reasons it can also be installed in the suction line of the circulation circuit.

If the circulating pump (Ry) should not be operated in permanent mode (with filter circulation, for example), but instead should be actuated by the system regulator, there must also – as described in the following – be an integrated thermostat, a differential thermostat and possibly an interval function (only when Tx is installed in the suction line). To do this you also need one available input and one available output (called Ty and Ry in the above diagram).

Note: Because of the common high power consumption of swimming pool pumps, it may

be necessary to also connect an external protective relay on the line side. If this is the case, the corresponding speed control must be deactivated

under 'Settings' ->

'Parameters' -> 'Speed control' when a speed-controllable output is used.

Function:

If the temperature in the swimming pool (Tx) falls below the desired preset value and if there is a sufficiently high differential temperature between plate heat exchanger (Ty) and pool (Tx) the circulating pump (Ry) is activated and the water heated in the plate heat exchanger is pumped into the pool. If the swimming pool has reached its switch-off temperature or if the plate heat exchanger no longer provides a sufficient temperature level the pump is deactivated again. If the temperature sensor Tx is installed in the suction line or must be, the circulating pump (Ry) must be switched on briefly at specific intervals to be able to measure the current swimming pool temperature on the sensor.

Implementation

: Open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'thermostats' and activate a free thermostat ( --2sec OK-->:). Then under Settings enter the desired switch-on and switch-off temperature for the swimming pool heating and also the terminal position of the temperature sensor Tx and the circulating pump Ry. Now open the menu item 'Settings -> 'Service' -> 'Functions' -> 'diff. thermostats' and activate a free diff.thermostat ( --2sec OK ->:). Then under Settings enter the desired switch-on and switch-off differential temperature between Ty and Tx and also the terminal positions of the temperature sensors Tx (W) and Ty (C) and the circulating pump Ry. Min. temp input W and max. temp input C are not needed with this application and should therefore be selected so that they outside the expected temperature range. To regularly filter the pool water an interval function can also be programmed for the circulating pump (Ry). To do this open the menu item 'Settings' -> 'Service' -> 'Functions' -> 'pipe coll/interval' and activate a available interval function ( --2sec OK-->:). Then under Settings enter the desired interval period, the switch-on period and the output to be switched.

Since several functions now access the circulating pump Ry, a logical link of these functions is required (see chapter 6). Under 'Settings' -> 'Service' -> 'Link' the output used for the circulating pump (called Ry here) must be programmed as follows:

Ry ( ....... ) 'on' , if:

Therm os tat x 'on' and Dif.Therm o. x 'on'

Ry ( ....... ) 'on' , if:

Therm os tat x 'on' and Dif.Therm o. x 'on' or Pipe coll./Interv. 'on'

without Interval function: with Interval function:

7.7 Bypass in the Solar Circuit

In some cases, integrating a temperature-guided bypass in the solar circuit is a good idea. This bypass is to prevent cooled-down water, which remains in the lines after downtimes, from being pumped through the warm storage tank and therefore cooling this at the start. Protecting a plate heat exchanger against ice cold water is also easy in this manner. To enable this bypass function you need only one of the four differential thermostat functions (chapter 5.2), one available input and one available output (called Tx and Rx in the adjacent diagram).

Function:

If the solar circuit pump, for example, does not switch on for the first time until the morning then only the collector will have been heated. In the pipelines, however, there is still cooled-down solar fluid. To keep this away from the storage tank or plate heat exchanger the 3-way valve (Rx) does not activate the solar circuit until the temperature in the storage tank feed line (Tx) is at the set difference higher than that of the storage tank (T2) or plate heat exchanger (T3).

Implementation

: Open the menu item 'Settings' -> 'Service' ->

'Functions' -> 'diff. thermostats' and activate an available diff. thermostat ( --2sec OK -->:). Then under Settings enter the

desired switch-on and switch-off differential and also the terminal positions of the temperature sensors (Tx and T2 or T3) and the 3-way valve.

Min. temp input W and max. temp input C are not needed with this application and should therefore be selected so that they are outside the expected temperature range.

8 Configuration

The regulator is factory set so that it can be used for most applications without changing the parameters. If parameters are changed by mistake, they can be reset to the factory presetting using the function "factory settings" (in the menu 'Settings' -> 'Service' -> 'Manual operation' -> 'factory settings'). To do this, hold the OK button down for 2 seconds.

Note:

Please note here that individually adjusted setting parameters and selected

functions will have to be adjusted again later to be in tune with the corresponding system. If you are not confident enough to configuring the regulator yourself please contact your specialist dealer. No liability shall be assumed for any damage caused by incorrectly set regulators!

9 System Expansion

The system regulator can be expanded modularly depending on system size and the required monitoring expenditure.

The company-specific IS bus is for connecting external add-on modules to the system regulator. Peripheral equipment distances of up to 25m are easily possible with this bus system. For connecting the regulator to a PC, laptop or modem there is an RS232 interface. The regulator also has two additional open-collector outputs for actuating external relays and a potential-free error message output to connect corresponding signaling devices.

08: 00

08: 40

09: 20

10: 00

10: 40

11:2 0

12: 00

12: 40

13: 20

14: 00

14: 40

15: 20

16: 00

08: 00

08: 40

09: 20

10: 00

10: 40

11:2 0

12: 00

12: 40

13: 20

14: 00

14: 40

15: 20

16: 00

Graphics-capable displayGraphics-capable display

Remote displayRemote display

Bus interfaceBus interface

Remote data acquisitionRemote data acquisition

Measured d ata acquisition

RS 232

serial data

bus

IS-busIS-bus

Fault signal

output

Fault signal

output

I/O-expansionsI/O-expansions

Remote data display

1. I/O module

2. I/O module

3. I/O module

4. I/O module

CAN-bus converter

9.1 IS-Bus

Add-on module

If additional inputs and outputs are needed with more comprehensive systems, the system regulator can be expanded with up to four add-on modules. Each of these modules has its own microprocessor and adds another 4 inputs and 3 outputs to the system regulator. The inputs are programmed both for temperature sensors (Pt1000) and also for impulse signals from volume flow meters. The available outputs are two relay outputs and one output for electronic speed control.

To keep the amount of connection work down as much as possible both the data exchange between the system regulator and the add-on modules and also the energy supply of the add-on modules are via the IS bus.

CAN bus converter

If the system has to be evaluated via a CAN bus, the IS bus of the system regulator can be connected to a CAN bus with the help of a CAN bus converter. The current data (all temperatures, radiation, switch statuses of the outputs, measured amounts of heat, date and time) of the IS bus are transferred to the CAN bus and can be evaluated there.

9.2 RS 232

The system regulator can be connected with a PC, laptop or modem via the RS232 interface. In this manner it is possible to read measured data, change parameters or select functions with a computer. This means there are exactly the same operating options available on the computer as on the system regulator itself.

PC-Anschluß Stecker

In addition to the operation of the system regulator, previously saved measured data records can also be easily down loaded onto the computer as an ASCII file. To do this click with the right mouse button on the “Download records “ box and save the file with “Save target as...“ at the desired location. For reasons of memory space, only the first two time values (i.e. with day diagrams the time; with month diagrams the days; with year diagrams the months) are ever indicated with the ASCII files because their distances are always the same size. To edit the measuring values in Excel, these time values can be automatically supplemented: select all 96 cells in the corresponding column, go to “EditÆFillÆSeries...“; select “AutoFill “ and press “OK”. Excel then fills in all cells correctly.

Attention:

Connecting the controller to a modem, you have to use a null modem cable between connection cable and modem.

view: soldering

The measured data in the individual records are based on the following units:

temperatures operation hours solar radiation power flow rate

daily values °C minutes W/m² W Liter monthly values - hours kWh/m² Wh Liter annual values - - kWh/m² kWh m³

Necessary settings for direct connection to a PC/laptop:

The required new connection must be added under “Start” Æ “Settings” Æ “Control panel” Æ “Modems” or “Telephone and modem options”. Select “Select modem (no automatic detection)”. Select “Standard modem types” as manufacturer and, as model, “Remote network with serial cable between 2 PCs” or “Standard modem 19200 bps” or “Communication cable between 2 computers”. Check under “Settings” if the remote network is set correctly with a “Maximum speed” of “19200” at most. Change the value accordingly if necessary.

Now the new remote network must be set under “My computer” Æ “Remote network” or “Start” Æ “Settings” Æ “Control panel” Æ “Remote network”. (If not available remote network must first be installed under “Start” Æ “Settings” Æ “Control panel” Æ “Software” Æ “Windows setup” Æ “Connections”.) Any network name can be entered for the system regulator. Under “Dial with:” the chosen modem / cable must now be selected. The “Dial-up number” can be authorized or allocated any chosen number if required by the system.

With “Remote network” Æ Properties the following settings must be made under “Server”:

- under “Type of server “ select “SLIP”

- under “Network protocols” “TCP/IP” must be marked

- under “TCP/IP settings...” “172.16.1.1” must be entered as the “IP address” and the points “IP

header compression...” (or “IP header ...”) and “Standard gateway...” must be deactivated.

The system regulator can now be accessed by the computer using the “Remote network”. After successful completion of the remote network connection Microsoft Internet Explorer, for example, can be used as operating software. You can access the system regulator at the address “http://172.16.1.2”. If access is not possible the following settings may have to be made, depending on the version of Explorer:

- “Internet options” Æ “Temporary Internet files” Æ “Settings” Æ activate “With every access...”

- “Internet options“ Æ “Connection“ Æ activate “Connect via a modem”

Æ deactivate “Connect via a proxy server “

Detailed setting information with the different versions of Windows can be downloaded from the homepage www.stecasolar.com

under “Service Thermal”.

oc R6

oc R5

9.3 Add-on and Alarm Outputs

For applications where, as well as the 4 standard outputs of the regulator (R1 to R4) and the 3 outputs of each of the 4 add-on modules, a further 1-2 outputs are required, there are 2 opencollector outputs available for actuating external relays. These add-on outputs can be used as switch outputs for pumps, valves, etc. via a relay.

In addition, the controller is fitted with a potential-free alarm output for the corresponding alarm devices. The relay output is designed for safety extra-low voltage below 42 Volt AC/DC, 2A.

If a voltage of 230 volts is connected, this must be done via an additional external relay.

This alarm output is always activated as soon as a fault is detected by the controller. Only after the cause of the fault has been eliminated and successfully acknowledged (see chapter

3.3) is the alarm output deactivated.

10 Information for Troubleshooting

Warning! Before opening the housing the unit must be disconnected from the mains!

The regulator was designed to be continually used for several years. Nevertheless, faults may occur. Most of the time, the fault’s cause is not sought in the regulator, rather in the peripheral system elements. The following description of a few common faults should help the installer and the operator to isolate the fault and activate the system as quickly as possible to avoid unnecessary costs. Naturally, not all possible faults can be listed. However, you will find the most common causes of faults that cover the majority of the fault conditions related to the regulator. Send the regulator in after you have first ensured that none of the described malfunctions have occurred.

One or more pumps are not running even though their switch-on requirements have been met.

Secondary condition

Possible cause:

Readout on LCD display disappeared No power supply, possibly a defective fuse or

feeder

"Manual operation" submenu selected

Switch pump(s) manually to OFF

Error displayed in the menu ´Operating status´ (e.g. short circuit, disconnection)

Sensor line or sensor defective or disconnected For safety reasons the control-related outputs are

switched off with sensor errors. Relay R3 or R4 can be heard clicking but output remains dead

Fuse burnt-out or defective Relay R4 can be heard clicking but output

remains dead

Check if a terminal jumper

(fig.4, page 7) may be required

Pump / 3-way valve on R4 is not responding even though the switch-on conditions have been met.

Secondary condition

Possible cause: The relay can be heard clicking but output

remains dead

No terminal jumper connected

(see Chapter 2.3, fig.4) Fuse burnt-out or defective

When using a 3-way switch valve

Switch valve not connected properly

(the continual phase L1 must be connected as well as

N and R4)

Radiation measured data shows 0 W/m² even though sensor is sufficiently irradiated.

Secondary condition

Possible cause:

Sensor defective or sensor line disconnected or short-circuited

(radiation sensor can not be checked independently by the regulator for disconnection or short circuit)

Sensor line connected with improper polarity. With the radiation sensors

the correct polarity must be ensured (see Chapter 2.3)

Flow rate sensor or heat meter determines no or incorrect amount of heat.

Secondary condition

Possible cause:

'Heat meter' function has not been activated or was programmed with

incorrect settings. Supply line and return line temperature sensors have been interchanged. Wrong pulse value has been programmed for the volume flow meter Wrong percentage of glycol has been programmed Another medium with different material values was used instead of Tyfocor

L as the solar fluid

Volume meter installed in the wrong flow direction No flow rate display on the volume meter

Blockage of a possibly installed filter screen on the

volume meter Air in the solar circuit

Error indication in the regulator’s LCD display:

The error messages at issue can be read in the ´Operating status´ submenu. Short circuits and disconnections of the individual temperature sensors are then displayed only when the corresponding sensors are actually really used on account of the selected layout plan and the activated functions. The regulator automatically detects the following errors and shows these in the display. If, despite the error display, a malfunction is not rectified but is still acknowledged, there will be another error display after a few seconds. When several errors occur at the same time the error with the lowest value (e.g. first T1 then T2 etc.) is displayed.

Note: If a sensor error is detected by the regulator, all of the regulator’s control-related outputs are switched off for safety reasons until the error is rectified again or disappears by itself. When the affected outputs can be switched back on therefore depends on the error itself and not on acknowledgement of the error message. This means unnecessary downtime of the system is reduced to a minimum.

Meaning of individual readout displays: Short circuit E1 (Regulator) Short circuit of the temperature sensor line on E1 of the regulator

... Short circuit E1 (IOBox1) Short circuit of the temperature sensor line on E1 of the IO box 1 ...

Short circuit E1 (IOBox2) Short circuit of the temperature sensor line on E1 of the IO box 2 Interrupt. E1 (Regulator) Interruption of the temperature sensor line on E1 of the regulator

... Interrupt. E1 (IOBox1) Interruption of the temperature sensor line on E1 of the IO box 1 ... Interrupt. E1 (IOBox2) Interruption of the temperature sensor line on E1 of the IO box 2

If there is an error (short circuit or interruption ) on one of the temperature sensor lines or if the input of a not (or incorrectly) connected IO box is selected, the error message ‘Err°C‘ will be displayed in the ‘Measured data ‘ menu instead of the measured value.

Temperature sensor troubleshooting

The temperature is determined by so-called resistance sensors. These are PT1000 type sensors. The resistance value also changes depending on the temperature. An ohmmeter can be used to check if there is a sensor defect. To do this, disconnect the corresponding temperature sensor from the regulator and then measure the resistance value. The following table contains the typical resistance values depending on the temperature. Please note that slight deviations are allowed.

Resistance values of the temperature sensor Pt1000

Temperature [°C] -30 -20 -10 0 10 20 30 40 50 60 70 Resistance [Ω]

882 922 961 1000 1039 1078 1117 1155 1194 1232 1271

Temperature [°C] 80 90 100 110 120 130 140 150 160 170 180 Resistance [Ω]

1309 1347 1385 1423 1461 1498 1536 1573 1611 1648 1685

11 Legal Guarantee

In accordance with German statutory regulations, there is a 2-year legal guarantee on this product for the customer.

The seller will remove all manufacturing and material faults that occur in the product during the legal guarantee period and affect the correct functioning of the product. Natural wear and tear does not constitute a malfunction. Legal guarantee does not apply if the fault can be attributed to third parties, unprofessional installation or commissioning, incorrect or negligent handling, improper transport, excessive loading, use of improper equipment, faulty construction work, unsuitable construction location or improper operation or use. Legal guarantee claims shall only be accepted if notification of the fault is provided immediately after it is discovered. Legal guarantee claims are to be directed to the seller.

The seller must be informed before legal guarantee claims are processed. For processing a legal guarantee claim an exact fault description and the invoice / delivery note must be provided.

The seller can choose to fulfil the legal guarantee either by repair or replacement. If the product can neither be repaired nor replaced, or if this does not occur within a suitable period in spite of the specification of an extension period in writing by the customer, the reduction in value caused by the fault shall be replaced, or, if this is not sufficient taking the interests of the end customer into consideration, the contract is cancelled.

Any further claims against the seller based on this legal guarantee obligation, in particular claims for damages due to lost profit, loss-of-use or indirect damages are excluded, unless liability is obligatory by German law.

Standard Factory Settings

In the submenu Settings -> Service -> Extras -> factory settings the system regulator can be reset to the factory presettings. This means that the individual settings of parameter values and function settings are deleted from the system regulator’s memory and the standard factory settings will then apply again.

No parameter values or function settings usually have to be made again after a power outage because these values are saved in the regulator’s EEProm. After a longer power outage it may, under certain circumstances, be necessary to set the time and date again. If this is the case the reset time and the date are displayed by the regulator automatically after the power cut.

When the system regulator is delivered the following parameter values and setting functions are preset. Any changes to the parameter values or the functions should be entered in the following table so that the error can be localized and rectified as soon as possible in the event of the regulator breaking down or an inadvertent erroneous setting. For repairs we also ask you to prepare a hydraulic layout diagram of your system and to hand this over to the dealer or manufacturer along with the filledin table of setting values.

12 Technical Data

Operating voltage

230 volts ( ± 15 % ), 50 Hz

Self consumption

≤ 3.0 W 7 inputs Of which 2 x temperature (Pt1000) or radiation input and 5 x temperature (Pt1000) or pulse input for calorimetry 4 outputs R1 as switch output Triac for speed control, switching capacity max. 250 W at 230 V R2 Triac for speed control, switching capacity max. 480 W at 230 V

R3 Switch relay, switching capacity max. 800 W at 230 V R4 Switch relay, switching capacity max. 800 W at 230 V

Or R4 voltage-free Remove jumper (activation e.g. of gas heating d evices) Outputs are protected against overcharge and short circuit. Interfaces

IS bus

Add-on modules, remote data display,

CAN bus converter Fault signal output Switch relay for safety extra-low voltage

RS232

Serial interface PC/modem for measured data acquisition/remote

data transfer Display

Graphic-compatible dot matrix display with 122 x 32 pixels, plain

text display Type of protection

IP 20 / DIN 40050 Ambient temperature allowed

0 to + 45° C Installation

Wall-mounted Weight

570 g Housing

Recyclable, 3-part plastic housing Dimensions LxWxH (mm)

150 x 215 x 43 mm Temperature sensors Pt1000 (4 x included in delivery) 1.5 m silicon cable, temperature range up to 180° C

Batterieladesysteme + Präzisionselektronik GmbH Germany

Environmentally friendly

chlorine-free bleached paper

Part number 709.756

Printed in Germany

Status 08/08

Subject to alteration

709756

Steca TR 0704 Installation And Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual