SOLARTHERMIE - SOLAR THERMAL - SOLAR TÉRMICO - SOLAIRE THERMIQUE - SOLARE TERMICO Solar Controller SOLCU Installation and operating instructions Temperature difference controller 5 inputs, 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 730.
EN Contents 1 1.1 1.2 1.3 1.4 1.5 1.6 2 3 3.1 3.2 3.3 4 4.1 4.2 4.3 4.4 4.5 5 5.1 5.2 5.3 5.4 6 6.1 6.2 6.3 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8 8.1 8.2 Safety.....................................................................................4 Proper usage............................................................................. 4 Dangers during assembly/commissioning................................. 4 Detecting faults........................................................................
EN 9 Service.................................................................................58 10 Fault finding........................................................................58 10.1 Causes of problems................................................................ 59 10.2 Pt1000 temperature sensor values......................................... 60 11 Information windows.........................................................61 12 Plausibility indices.............................................
EN 1 Safety 1.1 Proper usage The temperature difference controller (hereinafter referred to as controller) is an independently installed electronic temperature controller for on-surface installation, and may only be used for controlling solar thermal systems within the permissible ambient conditions (see chapter 14 "Technical data").
EN 1.3 Detecting faults Check the display regularly. In case of faults, isolate the cause (see chapter 10.1 "Causes of problems"). As soon as it becomes evident that safe operation is no longer guaranteed (e.g. visible damage), remove the device from the mains supply immediately. Have trained professional personnel remedy the fault. 1.4 Hot water temperature In order to limit the hot water temperature to 60 °C at the outlets, a hot water mixer must be installed. 1.
EN 2 Case overview Display Display for controller operation and system settings Operating switch The following modes of operation can be selected: - Manual for commissioning and testing for function - Automatic for automatic operation Operating buttons Arrow up for scrolling up through the menus SET button Confirmation or Activation of a value ESC button escape key - Off for switching off the outputs Arrow down for scrolling down through the menus Manual Automatic Off Fuses (see chapter 1
EN 3 About this manual 3.1 Applicability This manual describes the installation, commissioning, operation, maintenance and dismantling of the temperature difference controller for solar thermal energy systems. When installing the remaining components, e.g. solar collectors, pump assemblies, storage units, pumps and switching valves, be sure to observe the appropriate installation instructions provided by each manufacturer. 3.
EN 3.3.4 Other symbols and markings Symbol ✓ • Emphasis on issue at hand : : Meaning Precondition for action Call to action Result of action List Emphasis on issue at hand SET: Press "Arrow up/down" for scrolling Press "Arrow down" for scrolling through the menu or to adjust a value Press "Arrow up" for scrolling through the menu or to adjust a value Press "SET" button to confirm or activate a value ESC: Press "ESC" button to cancel : 4 Installation 4.
EN 4.2 Assembly WARNING Risk of electrical shock and fire if mounted in a damp environment! Only mount the controller in an area where the ingress protection is sufficient (see chapter 14 "Technical data"). 4.2.1 Mounting the controller CAUTION Risk of injury and damage to the casing when drilling! Do not use the casing as a drilling template. Choose a suitable installation site. Drill the upper fastening hole. Screw in the screw. Remove the upper casing. Hang the case in the recess .
EN 4.3 Electrical connection DANGER Risk of death by electrocution! Remove the controller from the power supply before opening the case. Observe all applicable legal guidelines and regulations of the local electricity supplier. NOTE The device is to be connected to the mains by means of a plug with grounding contact, or in the case of a fixed electrical installation, via a disconnection device for complete disconnection in accordance with the installation guidelines. 4.3.
EN 4.3.2 Connecting the cables If a protective conductor is provided or required for pumps/valves, connect it to the corresponding terminals of the controller. When connecting the protective conductor, observe the following points: - Make sure that the protective conductor is also connected to the controller's mains supply side. - Each terminal may only be connected to a single connecting wire (max. 2.5 mm2).
EN 4.5 Terminal plan 4.5.1 Power connection • Please refer to the type plate on the case to determine the type of power supply required. • The protective conductor must be connected. • Cables conforming to at least type H05 VV-.... (NYM…) must be used. G1: grid D1: wire bridge G1 N L N R1 n.c n.c n.c. N L n.c n.c. R2 L n.c. n.c. X 230 V ~ 115 V ~ D1 4.5.
EN Inputs 1 - 4: temperature recording Inputs 1...4 ϑ T1...T5 Temperature sensor Pt 1000 (polarity irrelevant) Input 5: recording temperatures and pulse values Temperature recording 5 ϑ T5 Pt1000 temperature sensor (polarity irrelevant) Recording pulse values via reed relay 5 Standard: volume flow recording (polarity irrelevant) 730.138 | 08.12 Recording pulse values via open collector 5 Special case: volume flow recording (observe polarity, pulse signals up to max.
EN 4.5.3 Connection of outputs R1 and R2 Output R1: • Semiconductor relays (TRIAC), also suitable for RPM control; max. switching current: see type plate CAUTION Avoiding damage and malfunctions When connecting an external relay or contactor, or when connect- ing a pump which has its own electronic RPM control, the controller output's RPM control must be deactivated (see chapter 7.4.3 "Setting the RPM control parameter"). R1 N R1: output 1 R2: output 2 D1: wire bridge R2 R1 n.c n.c n.c. N L n.
EN • Potential-free output via electromechanical relay; wire bridge must be removed! DANGER Risk of death by electrocution! In the event of use as a potential-free output, it must be ensured that the connections cannot come into contact with the mains voltage. R1 n.c. Rx Tx N L n.c n.c. R2 L n.c. n.c. A Rx Tx B A RS232 6 interface 7 8 9 Rx Tx B A T 5V + Rx Tx T 5V + T Q B Rx Tx 5V + T T Q T 730.138 | 08.
EN 5 Commissioning Make sure that the installation is finished completely and correctly, and that the switch on the controller is set to "OFF". The display for setting the language appears. 5.1 Setting the language ✓ "Deutsch" flashes in the display. : select a language. SET: confirm the language. [..........] ESC: finish the settings. Display: 6.1 The display for setting the time appears. 5.2 [Deutsch] Setting the time ✓ "12:00" flashes in the display.
EN 2)) 6 Modes of operation 6.1 "OFF" mode In order to switch off the outputs, slide the operating switch down. A new window appears in the display, which shows "OFF", as well as the controller software version number and the number of the chosen system. The display is backlit in red. In "OFF" mode, all outputs (R1, R2) are switched off. 9HUVLRQ ;; 6\VWHP 1R ; Off NOTE On delivery from the manufacturer, the switch is set to "OFF". 6.
EN 7 Settings SET 2 sec ESC Status display Menu overview Time 18 Systems 1 storage tank systems 2 storage tanks systems Swimming pool systems Storage tank swimming pool systems System 1 System 6 System 8 System 13 System 2 System 7 System 9 System 14 System 3 System 10 System 4 System 11 System 5 System 12 730.138 | 08.
EN Functions Parameters Circulation Max. temperature storage tank 1 Back-up heating Max. temperature storage tank 2 Solid fuel boiler Max. temperature swimming pool Quick charge Storage priority Language Factory settings Switch-on temp. difference solar 1 Heat quantity Thermostat Difference thermostat Switch-off temp. difference solar 1 Switch-on temp. difference solar 2 Time function Interval Switch-off temp. difference solar 2 Stagnation reduction Max.
EN 7.1 Time The time can be displayed and adjusted via the "Time" menu item. > @ Setting the time SET: press button for approx. 2 sec. The "Time" menu item is displayed. Display: 1 SET: press button. [Time] The current time is displayed. SET: press button to confirm. The hours display flashes after confirmation of the time. : set the hours. SET: press button to confirm. Display: 1.
EN 7.2 Systems The desired solar energy system can be chosen using the "System" submenu. There are a total of 14 different systems to choose from (subdivided into 4 system groups). System group 14 systems Chapter Systems with one storage tank System 1: 1 collector array – 1 storage tank 7.2.
EN Selecting a system SET: press button for approx. 2 sec. > @ : select the menu item "Systems". SET: open the submenu "System groups". Display: 2 : Select a system group. [Systems] SET: press button to confirm. : select a system. SET: press button to confirm. In the display, a small checkmark appears below the item number, which confirms that the system is selected. Sample display ESC: exit the "Systems" menu item. Sample display 22 730.
EN > @ System 1: 1 collector array – 1 storage tank Description of the solar function: The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the storage tank B1 (T2) is reached. When the switch-off temperature difference between collector array A1 (T1) and storage tank B1 (T2) or a safety limit is reached, the solar circuit pump R1 is switched off again. Display: 2.1 [Storage tank] Display: 2.1.1 7.2.
EN System 2: 1 collector array – 1 storage tank – heating return increase Description of the solar function: The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the storage tank B1 (T2) is reached. When the switch-off temperature difference between collector array A1 (T1) and storage tank B1 (T2) or a safety limit is reached, the solar circuit pump R1 is switched off again. Display: 2.1.
EN Display: 2.1.3 System 3: 1 collector array – 1 storage tank with external heat exchanger Description of the solar function: The solar circuit pump R2 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the storage tank B1 (T2) is reached. When the switch-off temperature difference or a safety limit is reached, the solar circuit pump R2 switches off again.
EN System 4: 1 collector array – 1 storage tank with zone loading Description of the solar function: The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the storage tank B1 (T2) is reached. When the switch-off temperature difference between collector array A1 (T1) and storage tank B1 (T2) or a safety limit is reached, the solar circuit pump R1 is switched off again. Display: 2.1.
EN Display: 2.1.5 System 5: 2 collector arrays (east/west roof) – 1 storage tank Description of the solar function: When the switch-on temperature difference between the storage tank B1 (T3) and one or the other of the collector arrays A1, A2 (T1, T2) is reached, then either solar circuit pump R1 for collector array A1 (T1), or solar circuit pump R2 for collector array A2 (T2) is switched on, depending on where the temperature difference occurs.
EN 7.2.2 Systems with two storage tanks System 6: 1 collector array – 2 storage tanks – intelligent pump control Description of the solar function: When the switch-on temperature difference between the collector array A1 (T1) and one of the two storage tanks B1, B2 (T2, T3) is reached, the appropriate solar circuit pump R1 or R2 is switched on. Both storage tanks B1, B2 are loaded one after the other, according to the priority control (chapter 7.
EN Display: 2.2.2 System 7: 1 collector array – 2 storage tanks – intelligent valve control Description of the solar function: When the switch-on temperature difference between the collector array A1 (T1) and one of the two storage tanks B1, B2 (T2, T3) is exceeded, the solar circuit pump R1 is switched on and the switching valve R2 is set to the correct position depending on the storage tank to be loaded.
EN 7.2.3 Systems with a swimming pool System 8: 1 collector array – 1 swimming pool Description of the solar function: The solar circuit pump R2 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the swimming pool C1 (T2) is reached. When the switch-off temperature difference between the collector array A1 (T1) and the swimming pool C1 (T2) or a safety limit is reached, the solar circuit pump R2 is switched off again.
EN Display: 2.3.2 System 9: 1 collector array – 1 swimming pool with external heat exchanger Description of the solar function: The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the swimming pool C1 (T2) is reached. When the switch-off temperature difference or a safety limit is reached, the solar circuit pump R1 switches off again.
EN System 10: 1 collector array – 1 swimming pool in stand-alone operation with external heat exchanger Description of the solar function: The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1 (T1) and the swimming pool C1 (T2) is reached. When the switch-off temperature difference or a safety limit is reached, the solar circuit pump R1 switches off again. The swimming pool pump is controlled externally. Display: 2.3.
EN Display: 2.3.4 System 11: 2 collector arrays (east/west roof) – 1 swimming pool Description of the solar function: When the switch-on temperature difference between the swimming pool C1 (T3) and one or the other of the collector arrays A1, A2 (T1, T2) is reached, then either solar circuit pump R1 for collector array A1 (T1), or solar circuit pump R2 for collector array A2 (T2) is switched on, depending on where the temperature difference occurs.
EN System 12: 2 collector arrays (east/west roof) – 1 swimming pool in stand-alone operation with external heat exchanger Description of the solar function: When the switch-on temperature difference between the swimming pool C1 (T3) and one or the other of the collector arrays A1, A2 (T1, T2) is reached, then either solar circuit pump R1 for collector array A1 (T1), or solar circuit pump R2 for collector array A2 (T2) is switched on, depending on where the temperature difference occurs.
EN > @ System 13: 1 collector array – 1 storage tank – 1 swimming pool in stand-alone operation with external heat exchanger – intelligent pump control Display: 2.4 [Storage tank + swimming pool] Display: 2.4.1 7.2.
EN System 14: 1 collector array – 1 storage tank – 1 swimming pool in stand-alone operation with external heat exchanger – intelligent valve control Description of the solar function: When the switch-on temperature difference between the collector array A1 (T1) and the storage tank B1 (T2) or the swimming pool C1 (T3) is reached, the solar circuit pump R1 is switched on and the switching valve R2 is set to the correct position depending on the storage tank / swimming pool to be loaded.
EN 7.3 [...............] Funktionen Functions Additional controller settings can be made by using the "Functions" submenu. The following submenus can be opened using the "Functions" menu item: Display: 3 • • • • • • • • • • • • • • [Function] Circulation 7.3.2 Back-up heating 7.3.3 Solid fuel boiler 7.3.4 Quick charge 7.3.5 Heat quantity 7.3.6 Thermostat 7.3.7 Difference thermostat 7.3.8 Time function 7.3.9 Interval 7.3.10 Stagnation reduction 7.3.11 Holiday function / recooling 7.3.
EN NOTE R? or T? indicates an output or input which has not yet been selected. Only outputs which are not yet required by the respective system can be selected. Double allocation of outputs is not possible. However, double allocation of inputs is possible. This is also displayed in an information window (see chapter 11). Leaving the menu ESC: press button. 7.3.2 Circulation function A circulation pump can be controlled in a time-based, temperaturebased, or pulse-based manner.
EN Activating temperature control [.................] Display: 3.1.4 [Temp. controlled] T ? [...]: 30°C [...]: 35°C Display: 3.1.4.1 Activating pulse control [on] [off] [................] Display: 3.1.5 [Pulse controlled] Input: ? Circulation: 2 min Wait time: 10 min Display: 3.1.5.1 ✓ "Functions" submenu selected, see "Selecting a function" (see chapter 7.3.1). ✓ Circulation activated, see "Activating a function" (see chapter 7.3.
EN 7.3.3 Back-up heating function This function allows thermostatic control of an output for additional heating of the solar storage tank using an oil or gas burner. This function can also be limited to specific times by using additional time control. Time control: time switch with 3 time windows. Temperature control: When the temperature in the upper part of the storage tank falls below the "on" value, then the output is switched on until the "off" temperature is reached. [.................
EN [..................] 7.3.4 Solid fuel boiler function This function allows control of a pump for heating of a storage tank using a solid fuel boiler. When the temperature difference between the solid fuel boiler and the storage tank exceeds the "on" value, the solid fuel boiler temperature is above the "min" value, and the storage tank temperature is below the "max" value, then the pump is switched on.
EN Programming the temperature limits of the solid fuel boiler and the storage tank : press button. The display for setting the temperature limits for storage tank and solid fuel boiler appears. SET: press button. "max" flashes in the display (storage tank's maximum tempera ture value). : set the "max" value. SET: press button to confirm. "min" flashes in the display (solid fuel boiler's minimum temperature value). : set the "min" value. SET: press button to confirm.
EN [....................] KWh T V T Display: 3.5 [Heat quantity] 7.3.6 Heat quantity function The controller has a function for measuring the quantity of heat. This allows, for instance, to record the quantity of heat fed into the storage tank from the solar energy system. To do this, the temperature of the supply and return, and the flow rate of the solar energy system must be recorded.
EN Determining the flow rate for the connected solar circuit pumps NOTE The following settings are only possible with the flow rate determination method "Without flow sensor". ✓ Flow rate determination method set to "Without flow sensor". : press button. The display for setting the min/max flow rate appears. SET: press button. The "max" value flashes in the display and the pump begins to [............] R1: max: 0l/Imp min: 0l/Imp V run at maximum speed. Display: 3.5.
EN / T ? [...]: 20°C [...]: 20°C Display: 3.6.3 [on] [off] ✓ Thermostat activated, see "Activating a function" (chapter 7.3.1). ✓ Outputs selected, see "Selecting an output" (chapter 7.3.1). : press button. The display for setting the temperature input and the "on" and "off" values appears. SET: press button. "T" flashes in the display (temperature input). : choose the desired input. SET: confirm the input. The "on" value flashes in the display. : set the "on" value.
EN 7.3.8 Difference thermostat function This function allows a controller output to be controlled depending on a pre-defined temperature difference. When the temperature difference exceeds the defined "on" value, the output is switched on until the temperature difference falls below the "off" value. For optimised functionality, unloading of the heat source can be limited to a particular temperature range, and loading of the heat target can be limited to a maximum value. [......................
EN Defining limits for the heat target PD[ & : press button. The display for setting the limit of the heat target appears. SET: press button. "max" flashes in the display (heat target's maximum value). : set the maximum value. Display: 3.7.5 SET: press button to confirm. Activating time control : press button. The "Time controlled" display appears. [...........] Display: 3.7.6 Time control is activated. : press button.
EN 7.3.10 Interval function With some types of collector, the collector's construction does not allow the temperature to be recorded at the appropriate location. In these cases, the solar circuit must be briefly activated at regular intervals to transmit the actual heat from the collector pipe to the collector sensor. When the interval function is activated, the controller automatically switches the pump on according to the settings. [...........] T Display: 3.
EN [................................] Display: 3.10 [Stagnation reduction] 7.3.11 Stagnating reduction function This function delays the end of the storage tank's loading phase in order to reduce, or even to avoid, the system's stagnation times at high temperatures. This causes the pump to be stopped repeatedly, and only briefly switched on again when high collector temperatures arise. With higher collector temperatures, the efficiency decreases significantly, thus loading takes longer.
EN 7.3.13 Frost protection function When the frost protection function is activated, the solar circuit pump is switched on as soon as the collector temperature sinks below +5 °C. This causes heat to be pumped through the collector from the lower part of the storage tank in an attempt to prevent the collector from freezing. [..............] Display: 3.12 [Frost protection] If the collector reaches a temperature of +7 °C, the pump is switched off again.
EN [.........................] 7.3.15 Alarm output function ✓ "Functions" submenu selected, see "Selecting a function" (see chapter 7.3.1). : press button. The error selection display appears. : select an error type. SET: press button to confirm. The selected errors are indicated. ! Display: 3.14 [Alarm output] Alarm if: Sensor error Int. clock failure System error Display: 3.14.
EN 7.4 Parameters In the factory, the controller is configured in such a manner that it can be used in most applications without changes to these values. [..............] max All parameters can be modified to a certain extent to suit the individual requirements of the system. If modifications are realised, the operating data of the solar components used must be observed! min Display: 4 [Parameters] NOTE The parameter settings depend on the solar energy system chosen.
EN [......... ............. ............] 8K 7.4.2 Setting the loading strategy parameter ✓ Access the "loading strategy" parameter, (see chapter 7.4.1). SET: press button. The display for setting the temperature differential control or Display: 4.21 [Loading strategy of storage tank 1] target temperature control appears. Choosing loading strategy between temperature differential control and target temperature control G7 . 7 & SET: press button for approx. 2 sec.
EN 7.5 Storage priority > @ When a 2-storage-tank system is selected, the storage priority can also be specified. When storage priority is activated, a first-priority storage tank and a second-priority storage tank can be defined. If it is intended that one of the two storage tanks is not to be loaded, this tank can be "removed" from the storage priority.
EN 7.6 [............] Language Accessing and selecting the language SET: press button for approx. 2 sec. Display: 6 : select menu item "Language". [Language] SET: press button. The language display appears. SET: press button. The set language flashes. [..........] : select a language. Display: 6.1 SET: press button to confirm. [Deutsch] 7.7 [...........................] Factory settings Resetting the factory settings SET: press button for approx. 2 sec.
EN 8 Automatic operation Symbols In "Automatic" operation of the controller, the status display with the selected solar energy system and other set functions are shown on the display. You can access the values of the individual sensors, the outputs' running times, and additionally set functions, by using the operating buttons (arrow up and arrow down). Other symbols provide information on the condition of the solar system.
EN 8.1 K Status display Switching the display screen : press button. The following values and displays appear one after another: • The temperature sensors of the system set, and the corresponding current temperature values. Sample display • Outputs and corresponding running times. • Functions, and their additional measured values. The additionally set functions are displayed. 8.
EN 9 Service Updating the controller software The controller is programmed in the factory with the latest controller software at the time of production. Therefore, the software does not usually have to be updated. However, if you would like to use newer controller software or if an update is recommended for technical reasons, you can transfer new controller software to the controller via the RS232 interface. Further information in this regard can be obtained from your dealer.
EN 10.
EN The solar pump operates, despite the fact that the switch-on condition is not fulfilled: Secondary symptoms Possible cause Procedure The pump symbol in the display rotates • The interval function is activated • No fault • Deactivate the relevant function, if necessary • The holiday function is activated • The frost protection function is activated • Blockage protection is activated • Symbol rotates The operating switch is set to manual operation and the pump output is set to "on" • Display has a
EN 11 Information windows The following information windows are displayed whenever a function's settings are not complete, activation of a function is not possible, errors occur in the system, or certain functions are currently activated.
EN 6\VWHP VWRSSHG GXH WR SULRULW\ WHVW 6RODU FLUFXLW UXQQLQJ GXH WR LQWHUYDO WHVW 7KHUPDO IURVW SURWHFWLRQ LV DFWLYH 9ROXPH IORZ IDXOW VRODU FLUFXLW FKHFN K\GUDXOLFV $LU LQ V\VWHP" 9ROXPH IORZ IDXOW VHFRQGDU\ FLUFXLW FKHFN K\GUDXOLFV $LU LQ V\VWHP" 1LJKW FLUFXODWLRQ GHWHFWHG &KHFN QRQ UHWXUQ YDOYHV DQG WKH WLPH VHW &ROOHFWRU FRQQHFWLRQV PD\ EH ZURQJ ZD\ URXQG &KHFN K\GUDXOLFV ,QIR GRXEOH DOORFDWLRQ FRQIOLFWLQJ VHWWLQJV 3ODXVLELOLW\ FKHFN XVHU PDQXDO 3 )DXOW GHWHFWHG LQ VHQVRU R
EN 6KRUW FLUFXLW LQ VHQVRU FDEOH 6WRUDJH WDQN SRRO GHDFWLYDWHG GXH WR VHDVRQ RU VWRUDJH SULRULW\ 3XPS RSHUDWLRQ QRW HQDEOHG DW SUHVHQW Sensor cable has short-circuited or the sensor is possibly defective. Check connection and/or sensor cable. Possibly check sensor and sensor cable using an ohmmeter. Loading of the storage tank/pool was deactivated due to storage priority. If this is not wanted, loading can be reactivated via storage priority or season selection.
EN 12 Plausibility indices The internal plausibility check ascertains whether conflicting settings have been detected in the controller. In this event, an information window displays an error code. The reasons which cause the information window to appear, along with each corresponding error code, are described in the following table. Check your settings at the controller, and correct them if necessary.
EN P 28 Switch-on temperature difference external heat exchanger + maximum temperature storage tank 1 > maximum temperature loading circuit 1 P 29 Switch-on temperature difference external heat exchanger + maximum temperature storage tank 2 > maximum temperature loading circuit 1 P 31 Temperature differential control storage tank 1 < switch-off temperature difference external heat exchanger P 32 Temperature differential control storage tank 2 < switch-off temperature difference external heat exchang
EN 13 Technical data Temperature difference controller Rated voltage (system voltage) 230 VAC, 50 Hz [optional 115 VAC, 60 Hz] Max. own consumption ≤4W Inputs 5 T1 - T4: temperature recording (Pt1000) T5: temperature recording (Pt1000) or pulse recording Additional inputs 1 x Direct Sensor input (flow rate and temperature) Outputs 2 R1: TRIAC output for RPM control, max. switching current 1.1 A AC R2: relay switched output, max. switching current 3.
EN 13.2 Parameter settings Maximum temperature storage tank 1 and storage tank 2: Factory setting 60 °C Adjustable down to min. 0 °C Adjustable up to max. Description 95 °C When the maximum temperature of storage tank 1 (storage tank 2) is reached, storage tank 1 (storage tank 2) is not loaded until the temperature drops to 3 K below the defined maximum value. Maximum pool temperature: Factory setting 30 °C Adjustable down to min. 10 °C Adjustable up to max.
EN Switch-off temperature difference external heat exchanger: Factory setting 3K Adjustable down to min. - Adjustable up to max. - Description When the switch-off temperature difference between the secondary side of the external heat exchanger and the storage tank is reached, loading of the storage tank is stopped. This value cannot be changed. Maximum collector temperature: Factory setting 130 °C Adjustable down to min. Minimum collector temperature +20 K Adjustable up to max.
EN Maximum temperature loading circuit: Factory setting 100 °C Adjustable Adjustable down to up to max. min. Minimum 130 °C loading circuit temperature +20 K Description When the temperature on the secondary side in the heat exchanger reaches 3 K below the defined maximum value, the solar circuit pump is switched off and the storage tank loading pump continues to run. When the temperature drops back down to 10 K below the maximum value, the solar pump switches on again.
EN 13.3 Parameter values for functions Circulation: Factory setting Adjustable down to min. Adjustable up to max. Comment 23.59 Programming a time period which goes beyond midnight (24.00) is not possible. Time controlled: - 00.
EN Solid fuel boiler: Factory setting Adjustable down to min. Adjustable up to max. Comment Temperature controlled: Switch-on temperature difference: 6K Switch-off temperature difference +2 K 20 K Switch-off temperature difference: 3K 0K Switch-on temperature difference -2 K Maximum heat target temperature: 60 °C 0 °C 150 °C Minimum heat source temperature: 50 °C 30 °C 95 °C Quick charge: Factory setting Adjustable down to min. Adjustable up to max.
EN Heat quantity: Factory setting Adjustable down to min. Adjustable up to max.
EN Differential thermostat: Factory setting Adjustable down to min. Adjustable up to max.
EN Interval: Factory setting Adjustable down to min. Adjustable up to max. 10 min 60 min 3 sec. 30 sec. Comment Interval time: 15 min Test-on time: 5 sec. Time controlled: -- 00.00 23.59 Programming a time period which goes beyond midnight (24.00) is not possible. Holiday function / recooling: Factory setting Adjustable down to min. Adjustable up to max.
EN 14 Notes 730.138 | 08.
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