Installation and Operating Manual. System Regulator for Solar Thermal Systems 7 inputs, 4 outputs

Transcription

1 SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO- SOLAIRE THERMIQUE - SOLARE TERMICO Installation and Operating Manual System Regulator for Solar Thermal Systems 7 inputs, 4 outputs 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. EN Z Änderungen aufgrund technischer Verbesserungen vorbehalten!

2 Content 1 SECURITY INSTRUCTIONS AND RESTRICTION OF LIABILITY Sign for security instructions General safety instructions Regarding these instructions Restriction of liability INSTALLATION AND OPERATION Location of installation Installation Regulator Connection OPERATING THE SYSTEM REGULATOR Basic Menu Measuring Values Menu Operating Status Menu Parameter Menu Date/Time Menu Clocks Menu System Selection Menu Functions Menu Links Menu Extras Menu Manual Operation Menu SYSTEM SELECTION Systems with Internal Heat Exchanger Systems with Plate Heat Exchanger Systems for Supplementary Heating FUNCTIONS Thermostats Differential Thermostats Radiation Switches Time Functions Pipe Coll./Interval Heat Meters Additional Measuring Values Collector Temperature Limitation DVGW Heating Synchronous Output Frost Protection Fresh Water at R LINKS

3 7 SYSTEM EXAMPLES Circulation Function Stop after-heating in the Morning Supplementary Heating Solid Fuel Boilers Recharging Storage Tanks Swimming Pool Heating Bypass in the Solar Circuit CONFIGURATION SYSTEM EXPANSION IS-Bus RS Add-on and Alarm Outputs INFORMATION FOR TROUBLESHOOTING LEGAL GUARANTEE TECHNICAL DATA

4 1 Security instructions and restriction of liability 1.1 Sign for security instructions 4 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 sequence! 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.

5 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! 130,00 150,00 193,00 215,00 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. 5

6 2.3 Regulator Connection cut-out 1 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 box. 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. fig.2: material cut-out for wire entrance 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. Abb.3: fig.3: Actuation Betätigung of connection der Anschlußklemmen terminals 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 6

7 output (230V switch output or voltage-free output): switch output 230V: voltage free output: fig.5: Connection variants for output To simplify things, the 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 E6 or E7 blue clamp red 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 REED- or mech. contact : E1 to E7 Open collector: E1 to E7 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. 7

8 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 - Measuring values... Operating status... Settings Parameter... Date / Time Clocks * Service System selection... Functions... Links... ** Extras... Manual operation... Use the (UP) or (DOWN) buttons to browse through the menu. Select the individual subdirectories with the button. To protect against unintentional changes to the regulator functions, all directories in the Service menu have a "child-proof lock". Press the and Menu button simultaneously for 2 seconds to open these directories. Press the 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 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 Instead, for storage space reasons, they reset after h (operating hours), kWh (heat quantity) and l (flow rate). 8

9 Measuring values... Operating status... + Settings Menu collector 1: 21 C storage 1 bottom: 47 C op. hours R1 Δ: 112h op. hours R1 Σ : 919h Menu values of the last 15 days storage 1 bottom: 47 C op. hours R1 Δ: 112h op. hours R1 Σ : 919h Menu values of the last 15 days values of the last 13 month radiation: 9 W/qm therm. power: 0 W flow rate: 183 l/h Menu values of the last 15 days values of the last 13 month values of the last 5 years overview of the last 5 years daily overview monthly overview yearly overview 5 years' overview Call up ( 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 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 Measuring values... Operating status... + Settings regulator: R1 R2 R3 status: ok IO-Box 1: R1 R2 R3 status: ok IO-Box 2: R1 R2 R3 status: ok IO-Box 3: R1 R2 R3 status: ok IO-Box 4: R1 R2 R3 status: ok 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 9

10 Measuring values... Operating status... + Settings Operating status... - Settings Param eter... Date / Tim e... + Clocks + Service Menu storage 1 max.: 60 C Diff. temp. solar1 ON: 8 K Diff. temp. solar1 OFF: 4 K... - Settings Param eter... Date / Tim e... + Clocks + Service Tue Tim e: 08:00 Menu Param eter... Date / Tim e... + Clocks + Service The 'Clocks' submenu can only be opened if one or more clocks have been previously activated under submenu 'Functioncs'!!! - Clocks Clock 1... Clock 2... Clock 3... Menu Date / Tim e... + Clocks + Service Date / Tim e... + Clocks - Service System selection... Functions... Links... * Extras... Manual operation... *) The 'Links' subdirectory is only displayed in the menu if selected functions must be linked!!! fig.10: Overview of the 'Settings' menu 3.4 Parameter Menu Parameter... Date / Time... + Clocks + Service Menu storage max. 60 C collector max. 130 C Diff. Temp. solar ON: 8 K... Storage tank priority... + speed control - speed control x R1 (regulator) Settings... x R2 (regulator) Settings... Menu control aim: absolute temp. min. speed control [%]: 30 Fig.11: 'Parameters' 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 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 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 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 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. 10

11 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 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 ( button) to change to the month entry (month flashes). You can now set the month with the buttons. Confirm the month entry ( 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 ( 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 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 ( 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 ( 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 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 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 Functions Menu Important: The 'Functions' menu window is part of the 'Service' menu and is therefore additionally protected against unintentional changes. Hold the 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. 11

12 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 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 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 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 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 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 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 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 and Menu button simultaneously for 2 seconds to open this menu window ("child-proof lock"). Links... Extras... Manual operation... + Menu (2 sec) Menu R1 (regulator) off R2 (regulator) off R3 (regulator) off (regulator) off R1 (IOBox1) off... Alarm output off (2 sec.) R1 (regulator) R2 (regulator) R3 (regulator) (regulator) on off off off Fig.12: 'Manual operation' menu (2 sec.) 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 button for 2 seconds. This setting remains active until the output is deactivated again by pressing the 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. 12

13 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: Systems with 1 storage tank and 1 collector array Systems with 1 storage tank and 2 collector arrays Systems with 2 storage tanks and 1 collector array Systems with 2 storage tanks and 2 collector arrays Systems with 3 storage tanks and 1 collector array Systems with 3 storage tanks and 2 collector arrays Systems with 4 storage tanks and 1 collector array 4.2 Systems with plate heat exchanger: Systems with 1 storage tank Systems with 2 storage tanks Systems with 3 storage tanks Systems with buffer tank and fresh water function Systems with buffer tank and preheating storage tank 4.3 Systems for heating support: Systems with 1 combi storage tank and internal heat exchanger Systems with 1 combi storage tank and plate heat exchanger Systems with 2 storage tanks Before a new layout plan can be selected, the current layout plan must first be deactivated (press 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 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 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. 13

14 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! 14

15 4.1 Systems with Internal Heat Exchanger Internal heat exchanger, 1 storage tank, 1 collector array R1 R2 Bypass for Basic-R R2 or S7 (Radiation sensor for Basic-R) T2 Basic- Ci M T4 T3 T5 R3 T3 oil, gas solid fuel Basic- AH Basic- SFH 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": 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. 15

16 Connecting diagram: T3 T4 T5 S7 R2 R3 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage bottom: C +Settings solar-pump Δ: h solar-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 + Menu (2 sec.) +speed control System selection -intern. heat exchanger Functions Links -1storage tank Extras Manual operation -1collector Basic choose with (2sec.) Basic-AH Basic-AH-SFH Basic-AH-SFH-Ci Basic-AH-Ci Basic-SFH Basic-SFH-Ci Basic-R Basic-Ci 16

17 4.1.2 Internal heat exchanger, 1 storage tank, 2 collector arrays Internal heat exchanger, 1 storage tank, 2 collector arrays, valve control alternative radiation sensor for BasicV-R S6 S7 Bypass for BasisV-R M R3 R3 Basic -Ci T4 T5 T4 R3 T5 oil, gas solid fuel Basic -AH Basic -SFH 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": 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

18 "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: M T4 T5 S7 R3 S6 Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage bottom: C solar-pump Δ: h Parameter storage max. 60 C solar-pump Σ: h Date / Time collector max. 130 C reversing valve Δ: h +Clocks Diff. temp. solar ON 8K reversing valve Σ: h +Service Diff. temp. solar OFF 4K + 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 (2sec.) BasicV-AH BasicV-AH-SFH BasicV-AH-Ci BasicV-SFH BasicV-R BasicV-Ci 18

19 Internal heat exchanger, 1 storage tank, 2 collector arrays, pump control alternative radiation sensor for BasicP-R S6 S7 collector field 1 Bypass for BasicP-R M R3 collector field 2 M R3 Basic -Ci T4 T5 T4 R3 T5 oil, gas solid fuel Basic -AH Basic -SFH 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": 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": 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. "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

20 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: T4 T5 R3 S6 Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage bottom: C solar-pump1 Δ: h Parameter storage max. 60 C solar-pump1 Σ: h Date / Time collector max. 130 C solar-pump2 Δ: h +Clocks Diff. temp. solar1 ON 8K solar-pump2 Σ: h +Service Diff. temp. solar1 OFF 4K + 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 (2sec.) BasicP-AH BasicP-AH-SFH BasicP-AH-Ci BasicP-SFH BasicP-R BasicP-Ci BasicV... 20

21 4.1.3 Internal heat exchanger, 2 storage tanks, 1 collector array Internal heat exchanger, 2 storage tanks, 1 collector array, valve control Bypass for BasicV-R R3 or S6 (radiation sensor) for BasicV-R M R3 T4 Basic -Ci T5 oil, gas 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 -AH "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": 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": 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

22 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: M T4 T5 S6 R3 Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C solar-pump Δ: h Parameter storage 1 max. 60 C solar-pump Σ: h Date / Time storage 2 max. 60 C reversing valve Δ: h +Clocks collector max. 130 C reversing valve Σ: h +Service Diff. temp. solar ON 8K + 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 +1collector BasicP... BasicV choose with (2sec.) BasicV-AH BasicV-AH-Ci BasicV-R BasicV-Ci 22

23 Internal heat exchanger, 2 storage tanks, 1 collector array, pump control T1 R3 T4 Basic -Ci T5 oil, gas 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 -AH "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": 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": 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. 23

24 Connecting diagram: T4 T5 R3 Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C solar-pump1 Δ: h Parameter storage 1 max. 60 C solar-pump1 Σ: h Date / Time storage 2 max. 60 C solar-pump2 Δ: h +Clocks collector max. 130 C solar-pump2 Σ: h +Service Diff. temp. solar ON 8K + 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 (2sec.) BasicP-AH BasicP-AH-Ci BasicP-Ci BasicV... 24

25 4.1.4 Internal heat exchanger, 2 storage tanks, 2 collector arrays Internal heat exchanger, 2 storage tanks, 2 collector arrays, valve control R1 T1 collector field 1 R2 T2 collector field 2 R3 T3 T5 storage tank 1 Basic -Ci T5 oil, gas Basic -AH T4 storage tank 2 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 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

26 Add-on " - AH": 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: M M T5 Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage 1 bottom: C storage 2 bottom: C Parameter storage 1 max. 60 C solar-pump Δ: h Date / Time storage 2 max. 60 C solar-pump Σ: h +Clocks collector max. 130 C valve collector Δ: h +Service Diff. temp. solar ON 8K valve collector Σ: h + Menu (2 sec.) Diff. temp. solar OFF 4K valve storage Δ: h System selection -intern. heat exchanger switch collect. 10K valve storage Σ: h Functions storage tank priority... Links +1storage tank +speed control Extras - 2storage tanks Manual operation +1collector - 2collector BasicV choose with (2sec.) BasicV-AH BasicV-Ci 26

27 Internal heat exchanger, 2 storage tanks, 2 collector arrays, pump control collector field 1 R1 T1 T2 collector field 2 R2 R3 T3 T5 storage tank 1 Basic -Ci T5 oil, gas Basic -AH T4 storage tank 2 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": Output 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

28 Add-on " - AH": 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: M T5 Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage 1 bottom: C storage 2 bottom: C Parameter storage 1 max. 60 C solar-pump1 Δ: h Date / Time storage 2 max. 60 C solar-pump1 Σ: h +Clocks collector max. 130 C solar-pump2 Δ: h +Service Diff. temp. solar1 ON 8K solar-pump2 Σ: h + Menu (2 sec.) Diff. temp. solar1 OFF 4K reversing valve Δ: h System selection -intern. heat exchanger Diff. temp. solar2 ON 8K reversing valve Σ: h Functions Diff. temp. solar2 OFF 4K Links +1storage tank storage tank priority... Extras - 2storage tanks +speed control Manual operation +1collector - 2collector BasicP choose with (2sec.) BasicP-AH BasicP-Ci 28

29 4.1.5 Internal heat exchanger, 3 storage tanks, 1 collector array Internal heat exchanger, 3 storage tanks, 1 collector array, valve control Bypass for BasicV-R T1 or S6 (radiation sensor) for BasicV-R M T5 Basic -Ci T5 oil, gas Basic -AH 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": Output 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. Add-on " - AH": 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

30 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: M M T5 S6 Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C storage 3 bottom: C Parameter storage 1 max. 60 C solar-pump Δ: h Date / Time storage 2 max. 60 C solar-pump Σ: h +Clocks storage 3 max. 60 C reversing valve 1 Δ: h +Service collector max. 130 C reversing valve 1 Σ: h + Menu (2 sec.) Diff. temp. solar ON 8K reversing valve 2 Δ: h System selection -intern. heat exchanger Diff. temp. solar OFF 4K reversing valve 2 Σ: h Functions storage tank priority... Links +1storage tank +speed control Extras +2storage tanks Manual operation - 3storage tanks - 1 collector BasicP... BasicV Choose with (2sec.) BasicV-AH BasicV-R BasicV-Ci 30

31 Internal heat exchanger, 3 storage tanks, 1 collector array, pump control T1 T5 Basic -Ci T5 oil, gas Basic -AH 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": Output 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. Add-on " - AH": 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. 31

32 Connecting diagram: T5 Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C storage 3 bottom: C Parameter storage 1 max. 60 C solar-pump1 Δ: h Date / Time storage 2 max. 60 C solar-pump1 Σ: h +Clocks storage 3 max. 60 C solar-pump2 Δ: h +Service collector max. 130 C solar-pump2 Σ: h + Menu (2 sec.) Diff. temp. solar ON 8K solar-pump3 Δ: h System selection -intern. heat exchanger Diff. temp. solar OFF 4K solar-pump3 Σ: h Functions storage tank priority... Links +1storage tank +speed control Extras +2storage tanks Manual operation - 3storage tanks -1 collector BasicP choose with (2sec.) BasicP-AH BasicP-Ci BasicV... 32

33 4.1.6 Internal heat exchanger, 3 storage tanks, 2 collector arrays Internal heat exchanger, 3 storage tanks, 2 collector arrays, valve control R1 T1 collector field 1 M R2 T2 collector field 2 M T3 storage tank 1 T4 storage tank 2 T5 storage tank 3 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. R3 M "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 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, ) are in a de-energized state! When the 3-way valve 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. 33

34 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: M M M T1 T2 T3 T4 T5 R1 R2 R3 Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage 1 bottom: C storage 2 bottom: C Parameter storage 1 max. 60 C storage 3 bottom: C Date / Time storage 2 max. 60 C solar-pump Δ: h +Clocks storage 3 max. 60 C solar-pump Σ: h +Service collector max. 130 C valve collector Δ: h + Menu (2 sec.) Diff. temp. solar ON 8K valve collector Σ: h System selection -intern. heat exchanger Diff. temp. solar OFF 4K valve storage1 Δ: h Functions switch collect. 10K valve storage1 Σ: h Links +1storage tank storage tank priority... valve storage2 Δ: h Extras +2storage tanks +speed control valve storage2 Σ: h Manual operation - 3storage tanks +1collector - 2collector BasicV choose with (2sec.) 34

35 Internal heat exchanger, 3 storage tanks, 2 collector arrays, pump control R1 T1 collector field 1 T2 collector field 2 R2 storage tank 1 storage tank 2 storage tank 3 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. M T3 T4 T5 R3 M "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 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, ) are in a de-energized state! Storage tank 2 is charged when the 3-way valve is in a de-energized state (R3 energized)! 35

36 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: M M T1 T2 T3 T4 T5 R1 R2 R3 Menu navigation: (here for the scheme 'Basic P' ) Measuring values collector 1: C Operating status collector 2: C +Settings storage 1 bottom: C storage 2 bottom: C Parameter storage 1 max. 60 C storage 3 bottom: C Date / Time storage 2 max. 60 C solar-pump1 Δ: h +Clocks storage 3 max. 60 C solar-pump1 Σ: h +Service collector max. 130 C solar-pump2 Δ: h + Menu (2 sec.) Diff. temp. solar1 ON 8K solar-pump2 Σ: h System selection -intern. heat exchanger Diff. temp. solar1 OFF 4K reversing valve 1 Δ: h Functions Diff. temp. solar2 ON 8K reversing valve 1 Σ: h Links +1storage tank Diff. temp. solar2 OFF 4K reversing valve 2 Δ: h Extras +2storage tanks storage tank priority... reversing valve 2 Σ: h Manual operation - 3storage tanks +speed control +1collector - 2collector BasicP choose with (2sec.) 36

37 4.1.7 Internal heat exchanger, 4 storage tanks, 1 collector array Internal heat exchanger, 4 storage tanks, 1 collector array, valve control T1 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 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, ) are in a deenergized 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 is in a de-energized state (R2, R3 energized)! 37

38 Connecting diagram: M M Menu navigation: (here for the scheme 'Basic V' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C storage 3 bottom: C Parameter storage 1 max. 60 C storage 4 bottom: C Date / Time storage 2 max. 60 C solar-pump1 Δ: h +Clocks storage 3 max. 60 C solar-pump1 Σ: h +Service storage 4 max. 60 C reversing valve 1 Δ: h + Menu (2 sec.) collector max. 130 C reversing valve 1 Σ: h System selection -intern. heat exchanger Diff. temp. solar ON 8K reversing valve 2 Δ: h Functions Diff. temp. solar OFF 4K reversing valve 2 Σ: h Links +1storage tank storage tank priority... reversing valve 3 Δ: h Extras +2storage tanks +speed control reversing valve 3 Σ: h Manual operation +3storage tanks - 4storage tanks BasicP BasicV choose with (2sec.) 38

39 Internal heat exchanger, 4 storage tanks, 1 collector array, pump control T1 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 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 -> ), 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. 39

40 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 storage 3 bottom: C Parameter storage 1 max. 60 C storage 4 bottom: C Date / Time storage 2 max. 60 C solar-pump1 Δ: h +Clocks storage 3 max. 60 C solar-pump1 Σ: h +Service storage 4 max. 60 C solar-pump2 Δ: h + Menu (2 sec.) collector max. 130 C solar-pump2 Σ: h System selection -intern. heat exchanger Diff. temp. solar ON 8K solar-pump3 Δ: h Functions Diff. temp. solar OFF 4K solar-pump3 Σ: h Links +1storage tank storage tank priority... solar-pump4 Δ: h Extras +2storage tanks +speed control solar-pump4 Σ: h Manual operation +3storage tanks - 4storage tanks BasicP choose with (2sec.) BasicV 40

41 4.2 Systems with Plate Heat Exchanger Plate heat exchanger, 1 storage tank or S6 (radiation sensor) for Basic-R R3 M Basic -CZ T5 if so with external after-heating T4 Basic-AH oil, gas 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": 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: 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

42 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: T4 T5 R3 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage bottom: C +Settings charging temp. C charge-pump Δ: h Parameter storage max. 70 C charge-pump Σ: h Date / Time collector max. 130 solar-pump Δ: h +Clocks Diff. temp. solar ON 8K solar-pump Σ: h +Service Diff. temp. solar OFF 4K + 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 (2sec.) Basic-CZ Basic-CZ-AH Basic-AH Basic-R 42

43 4.2.2 Plate heat exchanger, 2 storage tanks or S7 (radiation sensor) for Basic-R Basic -CZ M M R3 T6 T5 if so with externar after-heating Basic-AH oil, gas 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": 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": 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

44 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: M T5 T6 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C charging temp. C Parameter storage 1 max. 70 C charge-pump Δ: h Date / Time storage 2 max. 70 C charge-pump Σ: h +Clocks collector max. 130 solar-pump Δ: h +Service Diff. temp. solar ON 8K solar-pump Σ: h + Menu (2 sec.) Diff. temp. solar OFF 4K reversing valve Δ: h System selection -plate heat exchanger charging temp. max. 115 reversing valve Σ: h Functions charging setpoint 65 C Links +2 storage tanks AH extern. threshold 0 C Extras Manual operation Basic choose with (2sec.) Basic-CZ Basic-AH Basic-R 44

45 4.2.3 Plate heat exchanger, 3 storage tanks or S7 (radiation sensor) for Basic-R M if so with external after-heating 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. R3 M "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, ) are in a de-energized state! Storage tank 2 is charged when the 3-way valve 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: 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. 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. 45

46 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: M M T1 T2 T3 T4 T5 R1 R2 R3 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C storage 3 bottom: C Parameter storage 1 max. 70 C charging temp. C Date / Time storage 2 max. 70 C charge-pump Δ: h +Clocks storage 3 max. 70 C charge-pump Σ: h +Service collector max. 130 solar-pump Δ: h + Menu (2 sec.) Diff. temp. solar ON 8K solar-pump Σ: h System selection -plate heat exchanger Diff. temp. solar OFF 4K reversing valve 1 Δ: h Functions charging temp. max. 115 reversing valve 1 Σ: h Links +3 storage tanks charging setpoint 65 C reversing valve 2 Δ: h Extras reversing valve 2 Σ: h Manual operation Basic choose with (2sec.) Basic-R 46

47 4.2.4 Plate heat exchanger, buffer tank with fresh water function R3 T3 Basic -CZ M T4 R1 T5 if so with external after-heating storage tank 1 T2 R2 T6 Basic-AH oil, gas CW HW 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": 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

48 Erweiterung " - CZ": 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. 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: T1 T2 T3 T4 T5 T6 S7 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage bottom: C +Settings charging temp. C storage top: C Parameter storage max. 70 C Hot water temp.: C Date / Time collector max. 130 charge-pump Δ: h +Clocks Diff. temp. solar ON 8K charge-pump Σ: h +Service Diff. temp. solar OFF 4K discharge-pumpe Δ: h + Menu (2 sec.) charging temp. max. 115 discharge-pumpe Σ: h System selection -plate heat exchanger charging setpoint 65 C solar-pump Δ: h Functions AH extern. threshold 0 C solar-pump Σ: h Links -buffer tank with... storage min. 25 C Extras speed control Manual operation -fresh water function Basic choose with (2sec.) Basic-CZ Basic-AH Basic-R Basic-R-CZ 48

49 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 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.'). 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 are switched off. 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. 49

50 Connecting diagram: Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings charging temp. 1 C 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 charge-pump 1 Δ: h + Menu (2 sec.) charging temp.1 max. 115 charge-pump 1 Σ: h System selection -plate heat exchanger charging 1 setpoint 65 C discharge-pump Δ: h Functions requir. pre-heat. st. 50 C discharge-pump Σ: h Links -buffer tank with... speed control solar-pump Δ: h Extras solar-pump Σ: h Manual operation +fresh water function charge-pump 2 Δ: h -pre-heating tank charge-pump 2 Σ: h Basic choose with (2sec.) 50

51 4.3 Systems for Supplementary Heating Supplementary Heating with reverse raising, 1 combi storage tank, internal heat exchanger T1 or S6 (radiation sensor) for Basic-R Basic-AH T5 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": 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. 51

52 Connecting diagram: M T1 T2 T3 T4 T5 S6 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage bottom: C +Settings storage middle: C heating return flow: C Parameter storage max. 60 C solar-pump Δ: h Date / Time collector max. 130 C solar-pump Σ: h +Clocks Diff. temp. solar ON 8K reversing valve Δ: h +Service Diff. temp. solar OFF 4K reversing valve Σ: h + 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 (2sec.) Basic-AH Basic-R 52

53 4.3.2 Supplementary Heating, 1 combi-storage tank, plate heat exchanger T1 or S7 (radiation sensor) for Basic-R Basic-AH 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": 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: 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. 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. 53

54 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: M T1 T2 T3 T4 T5 T6 S7 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage bottom: C +Settings charging temp. C 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 charge-pump Δ: h +Service charging temp. max. 115 charge-pump Σ: h + Menu (2 sec.) charging setpoint 65 C solar-pump Δ: h System selection -supplementary heating return flow incr. ON 4K solar-pump Σ: h Functions return flow incr. OFF 2K reversing valve Δ: h Links -1combi storage tank speed control reversing valve Σ: h Extras Manual operation -plate heat exchanger Basic choose with (2sec.) Basic-AH Basic-R 54

55 4.3.3 Supplementary Heating, 2 storage tanks T1 T3 Basic-AH 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. R1 R2 T2 storage tank 1 T4 storage tank 2 "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": 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. 55

56 Connecting diagram: M T1 T2 T3 T4 T5 T6 Menu navigation: (here for the scheme 'Basic' ) Measuring values collector: C Operating status storage 1 bottom: C +Settings storage 2 bottom: C storage 2 top: C Parameter storage 1 max. 60 C heating return flow: C Date / Time storage 2 max. 60 C storage-pump1 Δ: h +Clocks Diff. temp. solar ON 8K storage-pump1 Σ: h +Service Diff. temp. solar OFF 4K storage-pump2 Δ: h + Menu (2 sec.) return flow incr. ON 4K pump storage2 Σ: h System selection -supplementary heating return flow incr. OFF 2K reversing valve Δ: h Functions storage tank priority... reversing valve Σ: h Links +1combi storage tank +speed control Extras - 2storage tank Manual operation Basic choose with (2sec.) Basic-AH 56

57 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 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. C C switch-on temperature switch-off temperature switch-off temperature switch-on temperature A switch-on temperature higher or lower than the switch-off temperature can be selected. Thus, both cooling and heating functions can be implemented. hysteresis control (for cooling applications) hysteresis control (for heating applications) 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 " (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. 57

58 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 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 " (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. 5.3 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 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 2.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 " (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. 58

59 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 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 " (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 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 " (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 temperature 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 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 button for 2 seconds ( --> ). 59

60 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 kWh. This resets to 0kWh not after kWh, but after kWh. 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). 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 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 l. This resets to 0 liters not after l but after 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 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. 60

61 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 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 " (regulator)" or the outputs "R1 (IOBox)" to "R3 (IOBox)" are available on each of the four possible add-on devices. 61

62 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 button for two seconds ( --> ). The outputs "R1 (regulator)" to " (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 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 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 " (regulator)"relay outputs or the outputs "R1 (IOBox)" to "R3 (IOBox)" on each of the four possible add-on devices are available. 62

63 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 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!!! 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). 63

64 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. System selection Functions Links Manual operation + Menu (2 sec) R3 regulator regulator Menu Menu 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' (2 sec) R3 (regulator) 'on', if: System control 'on' or Therm ostat 1 'on' or Time function 1 'on' choice box flashes! R3 (regulator) 'on', if: System control 'on' or Time function 1 'on' or Therm ostat 1 'on' choice box flashes! (2 sec) 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 function 1 'on' or Therm ostat 1 'on' (2 sec) 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 (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 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 for 2 seconds (choice box no longer flashes). To change a selected type of link (and/or) press the 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. R3 (regulator) 'on', if: System control 'on' and Tim e function 1 'on' or Therm ostat 1 'on' 64

65 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 with here. However, many other adjustments can be made using the same layout plan. 7.1 Circulation Function Ty 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 --> ). 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 --> ). 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: by using the self-programmed Circulation function: Rx (... ) 'on', if: Therm ostat x 'on' and Time function x 'on' by using the pre-programmed Circulation function: Rx (regulator) 'on', if: System control 'on' and Time function x 'on' 65

66 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 --> ). 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: by using the self-programmed Circulation function: Rx (... ) 'on', if: Therm ostat x 'on' and Dif.Therm o. x 'on' and Time function x 'on' by using the pre-programmed Circulation function: Rx (regulator) 'on', if: System control 'on' and Dif.Therm o. x 'on' and Time function x 'on' 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 --> ). 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 --> ). 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. 66

67 Example: thermostat for minimum comfort temperature: switch-on temp. 50 C ; switch-off temp. 60 C temp. input: E3 (regulator) ; output: (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: (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 ( (regulator) in the above example) must now be programmed as follows: (regulator) 'on', if: System control 'on' and Tim e function 1 'on' or Therm ostat 1 'on' 7.3 Supplementary Heating M Ty 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 --> ). 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. 67

68 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 --> ). 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: (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: (regulator) for boiler control (Max limit) thermostat3: switch-on temp. 88 C ; switch-off temp. 90 C temp. input: E7 (regulator) ; output: (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 ( (regulator) in the above example) must now be programmed as follows: without contained "AH": (regulator) 'on', if: Therm ostat 1 'on' and Therm ostat 2 'on' and Therm ostat 3 'on' upgrade a contained "AH": (regulator) 'on', if: System control 'on' and Therm ostat 1 'on' and Therm ostat 2 'on' 68

69 7.5 Recharging Storage Tanks Speicher 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 --> ). 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. 69

70 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 --> ). 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 -> ). 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 --> ). 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: without Interval function: with Interval function: Ry (... ) 'on', if: Therm ostat x 'on' and Dif.Therm o. x 'on' Ry (... ) 'on', if: Therm ostat x 'on' and Dif.Therm o. x 'on' or Pipe coll./interv. 'on' 70

71 7.7 Bypass in the Solar Circuit T1 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 --> ). 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. 71

72 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 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 08 : : : : : : : : : : : : : 00 The system regulator can be expanded modularly depending on system size and the required monitoring expenditure. Remote display Remote data display Bus interface CAN-bus converter I/O-expansions 1. I/O - module IS-bus Fault signal output RS 232 serial data bus Measured data acquisition Graphics-capable display 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. 2. I/O - module Remote data acquisition 3. I/O - module Modem Modem 4. I/O - module 72

73 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. view: PC-Anschluß soldering Stecker Attention: Connecting the controller to a modem, you have to use a null modem cable between connection cable and modem. 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 Edit Fill Series... ; select AutoFill and press. Excel then fills in all cells correctly. 73