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Operating instructions EN

1. 0008 5 listalla DON esaea A 6 2 1 Opening closing the case 6 2 2 Installing the controller 000 6 2 3 Electrical connections c eeeeees 7 COMMISSIONING cccscscevnicewensiannsiencixientesenians 10 3 1 Setting the language 066 10 3 2 Setting the TMG rccoscrtencetssavevrwcndvevexd 10 3 3 Choosing the solar system 11 3 4 Operating SWItCH ccccceeeeeeeeees 11 Device SCEUD s ceewiactavaanvuninexinetewntusrcimettemsniaes 12 A T aa denne 14 As SVSUCINS aiiai e a gan 14 A PUNCUONS sp ccetessttencsunete n 30 AA FParamete s enaos 46 4 5 Storage priority ssicemscoasmnndennsierdueesss 50 4 6 Language selection ccsscccesseeees 51 4 7 Factory settings ccccceceeseeeeeeeees 52 Table of Contents Main VSI oenieoncntoneanntwexnters vecuuieewecms teers 53 5 1 Display of current values 4 54 5 2 Min Max display 00cceeeeeeees 54 5 3 Operating hours display 55 SOIC E E P E A 56 6 1 Updating the controller software 56 Troubleshooting eennsnrnenraroan n 58 7 1 Cause of failures cccceeeeceee eee e ee 58 7 2 Pt1000 Temperature sensor values 59 7 3 Information WINGOWS c cccececceees 60 Guarantee a oiiiasks xa ciwestenentsanuniaicavasiverderinusaee 62 Technical Data cccccceccececececececececaeaeaeeeees 63 PPDONGIK iictirsioininincencrieadtouim
2. gt Pivot the upper case down and feed the opera ting buttons through the matching holes gt Fasten the case tightly with the screw Note Do not use the case as a drilling template Operating buttons Hinge grooves uN a z Lower case R Upper case 2 2 Installing the controller Attention The controller must only be installed in an area having an adequate level of protection see chapter 8 Technical Data Fastening gt Choose a suitable location gt Drill the upper fastening hole gt Screw in the screw gt Remove the upper case gt Hang the case in the recess gt Mark the position of the lower fastening holes and gt Remove the case again gt Drill the lower fastening holes gt Re hang the case in the recess gt Screw the case firmly using the lower fastening holes and gt Mount the upper case 136 155 714 884 05 45 2 3 Electrical connections Remove the device from the mains supply before opening the case All guidelines and regulations of the local electricity supplier must be observed The mains may only be switched on when the housing is closed An installer must make sure that the IP protection class of the controller is not damaged during installation 2 3 1 Cable layout D
3. gt Press the display screen on off is displayed gt Press Gj Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 24a gt Confirm 4a Choose the desired output ii a Display screen 3 5 2 gt Press 2 the display screen Output is displayed gt Press Output blinks gt Choose the desired output Qi gt Confirm Leave the submenu gt Press G amp S 4 3 6 Heat quantity lka Display screen 3 6 Accessing the Heat quantity submenu In the submenu Functions display screen 3 gt Press Gl gt Press 4 until the display screen 3 6 Heat quantity is displayed The controller has a function for measuring the quantity of heat This allows e g the heat fed into the storage tank from the solar energy system to be measured To do this the temperature of the supply and return of the solar energy system 38 714 884 05 45 must be measured An extra flow meter in the solar circuit measures the volume flow in the form of impulses at input 6 of the controller Since the heat quantity depends on the proportion of glycol in the heat transfer fluid this is accounted for in the calculations From these values the control ler determines the quantity of heat created and shows this on the display Activating deactivating the function 3 Display screen 3 6 1 I
4. 714 884 05 45 gt Press the control box blinks gt Activate deactivate time control 244 gt Confirm i after activating the time control a cursor blinks in the time window Switching on the time window gt Move the cursor in 30 minute steps Qi gt Press sets current cursor position to on the activated time segment shows as a bar display Switching off the time window If you now wish to deactivate the defined times then move the cursor to an existing bar and press the SET button gt Move the cursor in 30 minute steps Qi gt Press sets current cursor position to off gt Press G amp S finishes the operation and stores the time control settings Setting the interval times Display screen 3 9 3 gt Press 7 gt Press Gal the interval time blinks gt Adjust the interval time adjustable from 1 min to 120 min 3d gt Press i the interval time is confirmed and test on time blinks gt Adjust the test on time adjustable from 1 second to 240 seconds gt Press Ge finishes and stores the interval time parameters Leave the submenu gt Press G amp S 4 3 10 Holiday I Display screen 3 10 Accessing the Holiday submenu In the submenu Functions display screen 3 gt Press gt Press 4 until the display screen 3 10 Holiday is displayed This function activates nightly storage tank back cooling and prevents h
5. Note When the software is updated all customer specific data except the time is retained hier thee Lisedele fo gt Start the Update exe data transfer program gt Click the File button and select the controller software saved on your computer it then appears in the File name field gt Select the COM port for data transfer this is generally COM 1 or COM 2 gt Click the Update button 56 714 884 05 45 the confirmation screen shows the version number of the existing controller software in the device and the new controller software LEEF Pp WE i i Taker rns ea pm lF a Pam rr a i ee ae te e pee Se a te CE gt Click the Yes button Note If the software version on the device is higher than the new controller software this is indicated in the subsequent confirmation window i Caine Ere E y i Thais re sere cs l Thi bel Wirin d ek hiel r ei ie h L aiir the update is started the controller goes blank and is backlit in yel low a progress bar shows the data transfer status Note Transfer error is displayed if data transfer is interrupted or if the cables are not connected properly Please check the cables and repeat the update 6 1 5 Completing the update an information window opens to indicate that the update was successful 6 1 6 Disconnecting the cables The data transfer cable must be disco
6. on value gt Adjust the off value 24d gt Confirm Input allocation and programming of the solid fuel boiler temperature limits ka Display screen 3 3 4 the display screen Solid fuel boiler tempera ture limits is displayed gt Press Gj the input blinks 714 884 05 45 35 gt Choose the input 4 amp 4 gt Confirm lt a the max value blinks after confirming the input gt Set the max value Qa gt Confirm lt a the min value blinks after confirming the max value gt Set the min value Ud gt Finish data entry G amp S the solid fuel boiler parameters are stored Leave the submenu gt Press G amp S 4 3 4 Heating return increase Mw Display screen 3 4 Accessing the Heating return increase In the submenu Functions display screen 3 gt Press Gj gt Press 4 until the display screen 3 4 Heating return increase Is displayed This function allows temperature dependent con trol of a switching valve for increasing the return temperature of the heating circuit Functional description If the temperature difference between the solar storage tank and the heating return rises above the on value then the switching valve is control led so that the heating return flows through the solar storage tank In this way the solar heat from the storage tank can be used in the heating circuit If the temperature dif
7. Z UTN A A c T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 T4 Secondary external heat exchanger temperature sensor R1 Storage tank loading pump R2 Solar circuit pump 1 R3 Solar circuit pump 2 28 714 884 05 45 4 2 15 System 15 2 Collector arrays east west roof 1 Storage tank with heat exchanger 2 Pumps 1 Valve Description The solar circuit pump R2 is switched on as soon as the switch on temperature difference between one of the two collector arrays T1 T2 and the storage tank T3 is excee ded The switching valve R3 is always set so that flow occurs through the warmer of the two collector arrays The solar circuit pump R2 switches off as soon as the switch off temperature difference for both collectors T1 T2 falls below the threshold or the maximum storage tank temperature or the maximum loading temperature of the external heat exchanger is reached The storage tank loading pump R1 is switched on as soon as the external heat exchanger T4 reaches its minimum loading temperature and the temperature dif ference between the external heat exchanger T4 and the storage tank T4 is larger than the switch on temperature difference The storage tank T3 is loaded until the mini mum loading temperature of the external heat exchanger T4 falls below the threshold or the switch
8. arrays T1 T2 The pump R1 switches off as soon as the switch off temperature difference between the two collector arrays T1 T2 and the storage tank T3 falls below the threshold or the maximum storage tempera ture is reached Loading strategy The loading strategy for storage tank T3 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Note When no voltage is on the system the switching valve R2 must be set to collector array 1 T1 Display MES Display screen 2 7 W AA N BRO NJ R2 N me e R3 I 626 03 A 059 iG PE y lre fee fcl L L in c n c X ATAT GND GND GND 0 0 0 LJ L i Hei jei pe l l I Wire bridge to gt gt EY y Ee OW possess a I T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 R1 Solar circuit pump 1 R2 3 way switching valve 1 714 884 05 45 21 4 2 8 System 8 2 Collector arrays east west roof pump controlled 2 Storage tanks 2 Pumps 1 Valve Description If the switch on temperature difference between one of the two tanks T3 T4 and collector array 1 T1 or collec tor array 2 T2 is exceeded then the switching valve R3 switches the rele
9. button gt Move the cursor in 30 minute steps Qj gt Press Gj sets current cursor position to off gt Press G amp S finishes the operation and stores the time control settings Leave the submenu gt Press G amp S 4 3 9 Interval Accessing the Interval submenu In the submenu Functions display screen 3 gt Press Gal gt Press 4 until the display screen 3 9 Interval is displayed This function is useful when the collector tempera ture sensor is not directly mounted on the collector To measure the actual collector temperature in the collector array the solar circuit pump is controlled for a short test on time at definable intervals This causes the heat transfer fluid in the collector array to be regularly pumped to the collector tempera ture sensor Since this function must not always be activated e g at night it can be combined with a programmable time switch Activating deactivating the function 3 Ae hie Display screen 3 9 1 In the Interval submenu display screen 3 9 gt Press Gj the display screen on off is displayed gt Press ij Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4a gt Confirm lt a Setting the time window Display screen 3 9 2 gt Press 7 the display screen Time controlled is displayed 42
10. maa Display screen 2 2 Terminal layout W AA N BRA NJ R2 N me e R3 i 629 03 F49 0 G PE pele fpe fric IE TIE ee X golani GND GND GND 0 0 0 Lid A a hao hai hat 12 l 1 Wire bridge gt gt I oO mM T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 R1 Solar circuit pump 1 R2 Solar circuit pump 2 16 714 884 05 45 4 2 3 System 3 1 Collector array 2 Storage tanks 1 Pump 1 Valve Description If the switch on temperature difference between the collector array T1 and one of the two storage tanks T2 T3 is exceeded then 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 loa ded Both storage tanks T2 T3 are loaded one after the other according to the priority switching chapter 4 5 until either the relevant switch off temperature difference between the collector array T1 and storage tanks T2 T3 falls below the threshold or the maximum storage temperature is reached Loading strategy The loading strategy for storage tanks T2 T3 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control N
11. 2 T3 switches on The storage tanks are loaded according to the priority switching chapter 4 5 until the switch off temperature difference between the external heat exchanger and the affected storage tank falls below the threshold or the minimum loading tem perature falls below the threshold Loading strategy The loading strategy for the external heat exchanger and the loading strategy for the storage tank are factory set to use target temperature control The strategies can be adjusted or changed by using the Parameter menu chap ter 4 4 Note When using back up heating the relevant mini mum loading temperature of the external heat exchanger must be set using the Parameter menu chapter 4 4 It is essential that the minimum loading temperature is larger than the set switch off temperature of the back up heating Display Terminal layout I C9 ED Ra Ch 2 N In ip 2 PE rele Fre nc L L fall X To qo anoano GND GND e a ae ee a a a a a ae ae ae a ae ee ee ae ae ee 41 rd Ld T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 T4 Secondary external heat exchanger temperature sensor R1 Storage tank loading pump 1 R2 Storage tank loading pump 2 R3 Solar circuit pump 26 714
12. 2 6 System 6 4 2 7 System 7 4 2 8 System 8 4 2 9 System 9 4 2 10 System 10 4 2 11 System 11 4 3 9 4 2 12 Interval System 12 Submenus The submenus are used for defining all settings for 4 2 13 4 3 10 System 13 the controller Please note that every submenu has its own selection of further selection and setting 4 2 14 windows for specific configuration of the particular System 14 4 3 11 solar energy system Frost protection 4 2 15 System 15 4 3 1 4 4 1 Circulation Maximum storage tank temp 4 3 2 4 4 2 Back up heating Switch on temp difference 4 3 3 4 4 3 Solid fuel boiler Switch off temp difference 4 3 4 4 4 4 Heating return Limiting the increase loading temp 4 3 5 4 4 5 Bypass Storage tank loading strategy 4 3 6 4 4 6 Heat quantity Solar circuit loading strategy 4 3 7 4 4 7 Thermostat RPM control 4 3 8 Time function Holiday D gt 714 884 05 45 13 4 1 Time Display the time gt Press for about 2 seconds the Time submenu is displayed gt Press Gj the current time is now displayed Leave the submenu gt Press GS Set the time gt Press for about 2 seconds gt Press J to access the submenu the current time is now displayed gt Press Gi the time blinks gt Set the time Yd gt Press to store the time Leave the submenu gt Press G amp S The current time is
13. 884 05 45 4 2 13 System 13 1 Collector array 2 Storage tanks with heat exchanger 2 Pumps 1 Valve Description The solar circuit pump R2 is switched on as soon as the switch on temperature difference between the collector array T1 and storage tank 1 T2 or 2 T3 is exceeded If the switch off temperature difference of storage tank 1 T2 and storage tank 2 T3 falls below the threshold or storage tank 1 T2 and storage tank 2 T3 reach their maximum storage temperature or the external heat exchanger T4 reaches its maximum loading tempera ture then the solar circuit pump R2 switches off As soon as the switch on temperature difference between the external heat exchanger T4 and storage tank 1 T2 or storage tank 2 T3 is reached and the relevant mini mum loading temperature of the external heat exchanger T4 has been reached then the storage tank loading pump R1 switches on The switching valve R3 controls the loading of the storage tanks T2 T3 according to the priority switching chapter 4 5 until the switch off tem perature difference between the external heat exchanger T4 and the affected storage tank T2 T3 has fallen below the threshold or the relevant minimum loading temperature has fallen below the threshold Loading strategy The loading strategy for the external heat exchanger and the loading strategy for the storage tank are factory set to use target temperature control The
14. circuit is closed The temperature sensor input currently Check the sensor wires and selected is interrupted ensure that they are connected correctly to the controller Interruption symbol The Holiday function chapter 4 3 10 Please activate this function only is active The solar system is running to if you will be absent for an exten cool the storage tank ded period and deactivate it after you return 714 884 05 45 61 8 Guarantee The manufacturer assumes the following guaran tee obligations towards the end user The manufacturer will remove all manufacturing and material faults that appear in the regulator and affect the correct functioning of the device during the guarantee period Normal wear does not constitute a fault The warrantee is void if after completion of the purchase contract with the end user the fault is attributable to the end user or a third party is caused in particular by improper installation or commissioning improper or negli gent handling excessive claims inappropriate resources faulty construction work inappropriate building grounds or improper operation or use The warrantee is only valid if after discovery the fault is immediately claimed to your specialized dealer The claim is to be sent by the specialized dealer to the manufacturer A copy of the purchase contract must be enclosed An exact fault description is required for a rapid se
15. comple tely set errors occur in the system or the controller activates certain functions Display Description Measures Function cannot be activated as all If the already selected system outputs are already occupied Outputs _ layout is to be retained this cannot be double assigned function cannot be used Function cannot be activated as the Please make all function settings function settings are not complete The Frost protection function chapter 4 3 11 is active The solar circuit pump is running as the collector temperature has dropped below 5 C The Interval function chapter 4 3 9 is active The system runs to transport the heat transfer fluid from the collector to the temperature sensor There is a short circuit in the tempera Check the sensor wires and ture sensor input currently selected ensure that they are connected correctly to the controller Short circuit symbol The system is checking whether a storage tank can be loaded with higher priority chapter 4 5 The pump is deac tivated during this checking period 60 714 884 05 45 Display Description Measures o Gusten ema The temperature difference between the Check your solar system for pos aki collector and the storage tank gt 80 K sible error sources although the solar circuit pump is run ning Possible causes Air in the system the pump is faulty isolating valve in the solar
16. mMm Si Po ae Toa ai i ei ei oe m l Y Y K K Z K l I I i a I I i tara lpr a a ee l pir jt pl pil jt ll lji lii lii liil lji lji lji lil 111 lil lil all a T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 T4 Lower temperature sensor for storage tank 2 R1 Solar circuit pump 1 R2 Solar circuit pump 2 R3 3 way switching valve 1 22 714 884 05 45 4 2 9 System 9 2 Collector arrays east west roof valve controlled 2 Storage tanks 1 Pump 2 Valves Description If the switch on temperature difference between one of the two tanks T3 T4 and collector array 1 T1 or colle ctor array 2 T2 is exceeded then the solar circuit pump R1 is switched on switching valve 1 R2 switches the relevant storage tank into the solar circuit and switching valve 2 R3 switches the affected collector array T1 or T2 also into the solar circuit Switching valve 2 R3 is always set so that flow occurs through the warmer of the two collector arrays T1 T2 Switching valve 1 R2 controls the loading of the storage tanks according to the priority switching chapter 4 5 Pump R1 switches off when the switch off temperature falls below the threshold for storage tank 1 T3 and sto rage tank 2 T4 or the maximum storage temperature is reached Loading strategy The loading strategy for s
17. the Min Max values gt Choose the desired temperature sensor Qi gt Access the information window the Min Max values are displayed Resetting the Min Max values gt Press for about 2 seconds the Min Max values are reset to the current temperature Close the information window gt Press G or automatically after 30 seconds The minimum and maximum values of the con nected temperature sensor are always stored and accessible The values stored can be reset at any time 54 714 884 05 45 5 3 Operating hours display Accessing operating hours gt Choose the desired pump or valve 24d gt Access the information window lt a gt the operating hours counter is displayed cannot be reset A the operating hours counter is displayed can be reset Resetting the operating hours gt Press j for about 2 seconds the value is reset to 0 hours Close the information window gt Press G or automatically after 30 seconds The cumulative operating hours of the connected pumps or valves are always stored Here a distinction is made between total opera ting hours gt and delta operating hours A Total operating hours cannot be deleted or reset How ever delta operating hours can be reset to zero at any time 714 884 05 45 6 Service 6 1 The controller is programmed in the factory with the latest controller software at the time of pro duction Therefore
18. the software does not usually have to be updated Updating the controller software However if you would like to use newer controller software or if an update is required for technical reasons you can download the controller software from the internet and transfer it to the controller from a computer via the RS232 interface 6 1 1 Checking the version number of the controller software at the controller Slide the controller s operation switch to the OFF position to display the controller software version number see chapter 3 3 3 6 1 2 Downloading the controller software Before you update the software check whether there is a more recent version on the internet ser vice pages and whether an update makes sense To update the controller software you require the following files which you can download from the internet site and save on your computer Update exe data transfer program bin new controller software This software can be found in the internet under the following address www stecasolar com service tr0603 6 1 3 Connecting the RS232 cable to the con troller gt Disconnect the controller from the power supply gt Open the upper case see chap 2 1 gt Connect the transfer cable see appendix gt Close the upper case gt Connect the controller to the mains power supply gt Connect the transfer cable to the COM port of your PC or laptop 6 1 4 Performing the update
19. 2 x Triac for speed control max switching current 3 5 A Number of preset hydraulic systems 15 Interfaces RS232 IS Bus Operation temperature range 0 C 45 C LCD Display animated LCD Display with 2 colour backlight Protection type IP 20 DIN 40050 Dimensions x w xh 170 x 170 x 46 mm Performance data Output Power output Fuse R1 230 W 230 V 115 W 115 V Internal fuse 2 5 A MT 250 V R2 230 W 230 V 115 W 115 V R3 800 W 230 V 400 W 115 V Internal fuse 4 A MT 250 V 714 884 05 45 Appendix Parameter settings Factory setting Adjustable to min Adjustable to max Storage tank 1 3 maximum temperature 60 C 0 C 95 C Switch on temperature difference 1 3 STDon 8 K STDoff 2 K 50 K Switch off temperature difference 1 3 STDoff 4K OK STDon 2 K Loading circuit 1 2 temperature limit max 100 C Load min 2 K 130 C Loading circuit 1 2 temperature limit min 0 C 0 C Load max 2 K Storage tank 1 3 temperature differential loading strategy 8 K OK 80 K Storage tank 1 3 absolute temperature loading strategy 60 C 0 C 100 C Solar circuit temperature differential loading strategy 10 K OK 80 K Solar circuit absolute temperature loading strategy 70 C 0 C 100 C Fixed switching thresholds Factory settings Collector max 130 C Collector reactivation tempera
20. 4 884 05 45 This function allows thermostatic control of a pump for addition heating of the solar storage tank using an oil or gas burner This function can also be limited to specific times by using additio nal time control Time control Temperature control Time switch in 30 minute intervals If the temperature in the upper part of the storage tank falls below the on value then the pump is switched on until the off temperature is reached Activating deactivating the function 3 Display screen 3 2 1 In the Back up heating submenu display screen 3 2 gt Press Gj the display screen on off is displayed gt Press ij Note An information window Is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4d gt Confirm a Choose the desired output Display screen 3 2 2 gt Press 7 the display screen Output is displayed gt Press Output blinks gt Choose the output 29d gt Confirm lt a Choosing the input and setting the temp limits poets Display screen 3 2 3 gt Press 2 the display screen Temperature limits is dis played gt Press GJ the input blinks gt Choose the input 4 amp 4 gt Confirm the on value blinks after confirming the input gt Adjust the on value Qi gt Confirm the off value blinks after confirm
21. In the temperature in the upper part of the sto rage tank falls below the on value and the tem perature of the solid fuel boiler lies between the min and max values then the pump is switched on The pump switches off as soon as the storage tank temperature rises above the off value or the solid fuel boiler temperature lies outside the min or max limits 34 714 884 05 45 Activating deactivating the function 3 Display screen 3 3 1 In the Solid fuel boiler submenu display screen 3 3 gt Press the display screen on off is displayed gt Press Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4d gt Confirm a Choose the desired output Display screen 3 3 2 gt Press id the display screen Output is displayed gt Press Output blinks gt Choose the output 29d gt Confirm lt a Input allocation and programming of solar sto rage tank temperature limits on 45 CU E Display screen 3 3 3 gt Press 2 the display screen Solar storage tank tempera ture limits is displayed gt Press the input blinks gt Choose the output 29d gt Confirm the on value blinks after confirming the input gt Adjust the on value Qj gt Confirm the off value blinks after confirming the
22. SOLARTHERMIE SOLAR THERMAL SOLAR TERMICO SOLAIRE THERMIQUE Operating instructions Temperature Difference Controller 6 inputs 3 outputs 5 714 884 05 45 Case overview Operating switch The following modes of operation can be switched Manual for commissioning and functionality test Auto for normal operation Off for switching off the system lt 4 Manuell lt Auto lt off Display Full graphic and setting poor Fuses Segess AEE ees ssses jeeciece h a E EEE display animated for operating the controller s system settings Operating buttons gi lt Arrow up ag for scrolling the menus a upwards SET button Staticising ESC button Program termination Arrow down for scrolling the menus downwards RS232 connector 222A Replacement fuses o Z o J 2e Y p Z I Strain reliefs Ai H H HE On i Power connection Outputs Inputs 714 884 05 45 Safety information ser cceicricencvesskvaxtaersceeneiees 4 1 1 Installation an commissioning 4 1 2 About this Manual 0 4 1 3 Liability WAIVE scsciisinedesusmonmwecrsaudranuas 4 1 4 Description of symbols
23. ature difference between the collector and storage tank is gt 80K even though the pump is running 7 2 Pt1000 Temperature sensor values A potentially defective sensor can be checked using an ohmmeter To do this the sensor must be disconnected its resistance measured and the value compared with the figures in the table below Small deviations are acceptable Possible cause The interval function is activated The holiday function is activated The frost protection func tion is activated All controller outputs are al ready in use outputs cannot be doubly used The functions have not been correctly configured Despite the running pump no circulation is occurring in the solar circuit because The pump is faulty or not correctly connected The isolating valve in the solar circuit is still closed Air is in the solar circuit Procedure No fault Deactivate the relevant function if necessary No fault Check all the configuration settings for the desired function Correct the fault in the system Exit from the fault message Attention J the mains s case Remove the device from upply before opening the Femperaturera 30 20 10 fo po 20 fo a fo Jo po Temperate ra 80 oo foo no 20 130 p0 s0 160 iro 780 714 884 05 45 59 7 3 Information windows The following information windows are display whenever system settings of a function are not
24. bmenu In the Functions submenu display screen 3 gt Press Gj the Circulation submenu is displayed A circulation pump is either time or temperature dependent controlled Both types of control can be combined with each other Time control Temperature control Time switch in 30 minute intervals If the temperature in the circulation return falls below the on value then the pump is switched on until the off temperature Is reached Activating the functio ka Display screen 3 1 1 In the Circulation submenu display screen 3 1 gt Press Gj the display screen on off is displayed gt Press ij Note An information window Is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4d gt Confirm a Choose the desired output ka Display screen 3 1 2 gt Press id the display screen Output is displayed gt Press Output blinks gt Choose the desired output 294 gt Confirm lt a Activating time control Beas a Display screen 3 1 3 gt Press 2 the display screen Time controlled is displayed gt Press the control box blinks gt Activate deactivate time control 4 amp 4 gt Confirm after activating the time control a cursor blinks in the time window 714 884 05 45 31 Switching on the time window gt Move the cursor in 30
25. confirm the storage priority i Display screen 5 2 gt Press 7 Interval time Test on time gt Press Gi the interval time blinks gt Press QUA change the interval time gt Press Gi confirm the interval time the test on time blinks gt Press Q47 change the test on time gt Press G amp S confirm the test on time gt Finish the settings S Leave the menu gt Press GZ Language selection Gg Bs i Display screen 6 Accessing the Language submenu gt Press for about 2 seconds gt Choose the Language submenu Qi Exit the submenu gt Press G amp S 714 884 05 45 51 Select the language Deutsch English Display screen 6 1 In the Language submenu display screen 6 gt Press the Language selection display screen is displayed gt Press HJ the chosen option blinks gt Select the language 4d gt Confirm the language selection amp gt Finish the settings S 4 7 Factory settings is Display screen 7 Accessing the Factory settings submenu gt Press for about 2 seconds gt Choose the Factory settings submenu Qi Exit the submenu gt Press G amp S Resetting the factory settings oe as Display screen 7 1 In the Factor settings submenu display screen 7 gt Press a display screen containing the prompt Reset all values opens gt Pre
26. creen 4 5 In the submenu Parameters display screen 4 gt Press Gj gt Press until the display screen 4 5 Storage tank loading strategy is displayed gt Press ij the display screen to choose the target tempe rature control AF control is displayed the storage tank temperature sensor blinks gt Choose between the storage tanks 294 gt Press the chosen option blinks gt Choose the type of control Yd gt Press Gi gt Adjust the value Qi gt Confirm the value lt gt Leave the submenu amp The storage tank of a solar energy system is loaded according to a particular loading strategy One must decide between target temperature control and temperature differential control A separate strategy is defined for each storage tank i e if two storage tanks are present one can be loaded according to a target temperature strategy and the other according to temperature difference 48 714 884 05 45 Target temperature control Loading is controlled so that the storage tank external heat exchanger are loaded at a constant temperature target temperature if possible The aim is to obtain the best possible thermal layering in the storage tank and to suppress the fossil fuel back up heating as early as possible via e g a storage tank feed from above Temperature differential control Loading is controlled so that the defined tempe rature difference between the coll
27. displayed or changed using the Time menu Note The controller does not automatically switch between summer and winter time 4 2 Systems Open the submenu Systems gt Press for about 2 seconds gt Select the submenu Systems 2 gt Press the currently active solar system is now displa yed in the submenu recognisable by the tick beneath the display number Choose the system gt Press YG Activate the system gt Press Gj a small tick will now appear under the display number and confirms this setting Leave the submenu gt Press G amp S Note The system type that has now been activa ted will now be recognised by the controller soft ware The desired solar system can be chosen using the system submenu There are a total of 15 diffe rent systems to choose from 14 714 884 05 45 4 2 1 System 1 1 Collector array 1 Storage tank 1 Pump Description The solar circuit pump R1 is switched on as soon as the switch on temperature difference between the collector array T1 and the storage tank T2 is reached If the temperature difference between the collector array T1 and the storage tank T2 drops below the switch off temperature difference or the storage tank T2 reaches the maximum storage temperature then the solar circuit pump R1 is switched off again Loading strategy The loading strategy for the storage tank T2 is set to
28. e pump and sensors depends on the solar system chosen See terminal plan chapter 4 2 Each terminal may only be connected to a single connecting cable max 2 5 mm Fine core cables should use wire end sleeves ferrules 714 884 05 45 9 2 3 5 Advice regarding the installa tion of temperature sensors Only use the original Pt1000 sensors that are approved for use with the controller The tempe rature sensor and silicon cable are temperature resistant up to 180 C The polarity of the sensor contacts is irrelevant All sensor cables carry low voltage and to avoid inductive effects must not be laid close to 230 volt or 400 volt cables minimum separation of 100 mm If external inductive effects are expected e g from heavy current cables overhead train cables transformer substations radio and televi sion devices amateur radio stations microwave devices etc then the cables to the sensors must be adequately shielded Sensor cables may be extended to a maximum length of ca 100 m Cable length and cross sections Length up to 50 m 0 75 mm Length up to 100m 1 5 mm 3 Commissioning Connect the sensors and pumps swit ching valves to the controller before you connect the power supply gt Connect the power supply mains to the controller the controller will ask for the Time to be set and the correct Solar system to be chosen 3 1 Setting the lan
29. eavaiuineiaaunsesdes 64 Parameter settings ceeeeeeeeeeeeeeeeeeees 64 RS232 INt rfAaCC vi c ccccccecsccessseceacsceccessnsederaes 65 IS BUS 0 0 o oc cece eccccec cee eeceeceaeeceeeeeeeneeaeeaesnenneaes 65 714 884 05 45 1 1 Safety information Installation and commissioning e When laying cables ensure that no damage occurs to any of the construc tional fire safety measures present in the building e The controller must not be installed in rooms where easily inflammable gas mix tures are present or may occur e The permissible environmental condi tions must not be exceeded at the site of installation e Factory labels and serial numbers may not be altered removed or rendered unreadable e Before connecting the device make sure that the energy supply matches the speci fications on the type plate e All devices connected to the controller must conform to the technical specifica tions of the controller e All operations on an open regulator are only to be conducted cleared from the power supply All safety regulations for working on the power supply are valid Connecting and or all operations that require opening the regulator e g chan ging the fuse are only to be conducted by specialists The controller is protected against overload and short circuit 1 2 About this manual This manual describes the installation function and operation of a solar thermal controller Whe
30. ector and sto rage tank plate heat exchanger is as constant as possible 4 4 6 Solar circuit loading strategy plate heat exchangers only E Display screen 4 6 In the submenu Parameters display screen 4 gt Press Ga gt Press 4 until the display screen 4 6 Limiting the loading temperature is displayed gt Press GJ the AT T chosen option blinks gt Choose between AT T U4 gt Press GJ the target temperature temperature differen tial value blinks gt Adjust the value 294 gt Save the value 4a gt Leave the submenu amp As with the storage tanks with the solar circuit loading one must choose between target tempe rature and temperature differential control strate gies Display screen 4 7 Note The controller is set at the factory to RPM control With this setting no pumps with inte grated electronic speed control should ever be connected to the R1 and R2 outputs In the submenu Parameters display screen 4 gt Press Ga gt Press until the display screen 4 7 RPM control is displayed gt Press Gi Output R1 blinks gt Choose between R1 and R2 244 gt Press Gi the chosen option blinks gt Choose on or off L434 gt Confirm the selection gt Leave the submenu 714 884 05 45 49 The R1 and R2 outputs can be configured to func tion either as RPM controllers or simple switches RPM controlled o
31. elected sen sor at the collector storage tank or heat exchanger is shown Symbols The various symbols are displayed as soon as addi tional functions are activated or values exceed or fall below parameters The display message below shows all symbols simultaneously as an example In practice they appear in various combinations Display screen main menu Frost protection symbol Shown when the frost protection function is activated see 4 3 11 Holiday symbol Shown when the holiday function is activa ted see 4 3 10 Storage tank max indication Flashes when the maximum storage tank temperature is reached Storage tank 3 way switching valve Animated in flow direction External heat exchanger SOOO Pump Active pump rotates in display 714 884 05 45 53 5 1 Display of current values 75 C Switching the display of current values gt Press YG the current values of all sensors and pumps valves connected to the controller are displa yed one after another Collector temperature sensor east west current temperature C Storage tank 1 3 temperature sensor current temperature C Pump s cumulative running time h Switching valve s cumulative running time h gt switches to the current value of collector 1 If functions are activated the function diagram with the corresponding current values is displa yed 5 2 Min Max display Accessing
32. epending on the type of installation the cables may enter the device through the rear of the case or the lower side of the case Cable feed from the rear gt Remove the plastic flaps from the rear side of the case using an appropriate tool Note An external strain relief is intended for this type of cabling Cable feed from below gt Cut the left and right plastic flaps using an appropriate tool e g knife and break them out of the case Note Flexible cabling must be fastened to the case using the strain relief clamps provided 714 884 05 45 2 3 2 Terminal plan Outputs Inputs Power Output Output Output Input Input Input Input Input Input R1 R2 R3 1 2 3 4 5 6 1 P a Ea Oa O GND AGND f GND GND GND JGND Power connection Please note the type of power supply required from the type plate on the case of the de
33. ference falls below the off value then the switching valve switches the hea ting return back to the back up heating system Activating deactivating the function 34 1 Ika Display screen 3 4 1 In the Heating return increase submenu display screen 3 4 gt Press Gj the display screen on off is displayed gt Press Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4a gt Confirm 4a 36 714 884 05 45 Choose the desired output Display screen 3 4 2 gt Press 2 the display screen Output is displayed gt Press Output blinks gt Press UGG choosing the output gt Confirm S Allocation of inputs Solar storage tank Heating return tempera ture Switch on off temperature Ez Display screen 3 4 3 gt Press 7 the display screen Solar storage tank heating return temperature limits is displayed gt Press the solar storage tank temperature input blinks gt Choose the input 294 gt Confirm lt a the heating return temperature input blinks gt Choose the input 294 gt Confirm lt a the on value for the switch on temperature difference blinks after confirming the input gt Adjust the on value 24a gt Confirm the off value blinks after confirming the on value switch off temperature difference
34. gt Adjust the off value 24a gt Confirm Leave the submenu gt Press G amp S 4 3 5 Bypass lka Display screen 3 5 Accessing the Bypass submenu In the submenu Functions display screen 3 gt Press Gj gt Press 4 until the display screen 3 5 Bypass Is displayed This function allows the solar circuit to be bypassed using a switching valve In this way the collector circuit can be warmed before the storage tank is switched into the circuit This is especially useful in larger solar energy systems having a large volume of heat transfer fluid Functional description The temperature before the valve in the solar cir cuit is monitored and compared with the storage tank temperature Once the temperature reaches 714 884 05 45 37 the switch on value the valve closes the bypass and switches the storage tank into the solar cir cuit If the temperature falls below the threshold of the switch off value then the valve separates the storage tank from the solar circuit and opens the bypass The switch on off values are defined in the controller In solar energy system 2 2 2 Storage tanks 2 Pumps 1 Collector array the bypass function is fixed to storage tank 1 In all other solar energy systems the control relates to the storage tank currently being loaded Activating deactivating the function Display screen 3 5 1 In the submenu Bypass display screen 3 5
35. guage Deutsch English i Solar system display screen the language selection window is displayed gt Select the language 24d gt Confirm the language a gt Finish the settings S the language is saved and the subsequent display screen Time is displayed 3 2 Setting the time i Time display screen 12 00 will blink in the display gt Set the time G7 gt Confirm the time gt Finish the settings 3 the time is saved and the subsequent display screen Solar system is displayed 10 714 884 05 45 3 3 Choosing the solar system E i Solar system display screen the first solar system is displayed gt Choose the desired solar system 29d gt Confirm the solar system chosen a small tick will now appear under the display number to confirm this setting gt Exit system settings amp 3 4 Operating switch 3 4 1 Manual mode of operation Ly Manual display screen When operating the device for the first time or when testing the function the controller outputs can be manually switched To do so gt Slide the operating switch upwards Manual Position the display will be backlit in red and an infor mation window is displayed lt Manu lt Auto lt Off gt Choose the desired output 294 gt Press switch the output using on or off You can view the temperature value
36. h the controller can be found in the list below Only return the controller when you are absolutely sure that none of the problems listed below is responsible for the fault Possible cause Controller power supply is interrupted Pump power supply is interrupted The maximum storage tank temperature has been reached The maximum collector temperature has been reached In multi storage tank sy stems The system is waiting for a priority test The operation switch is set to manual operation and the pump output is set to off Fault short circuit or open circuit in a temperature sensor Procedure Check the controller power cable Check the fuse s Check the pump power cable Check the fuse in the controller replacement fuse is located in the case No fault Set the operation switch back to automatic operation On the controller request the current values from all con nected temperature sensors Replace all defective sen sors and or cabling 58 714 884 05 45 Symptom Secondary symptoms The solar pump s The pump symbol in the operate despite the fact display rotates that the switch on con ditions are not satisfied A function cannot be The message All outputs activated are occupied shows in the display The message Please check the settings shows in the display System error shows in the display System errors occur when the temper
37. igh thermal loads of the solar system due to completely heated storage tanks Activate this function if you intend to be absent for an extended period holiday 714 884 05 45 43 no hot water is required for an extended period The function is activated when the collector temperature falls 8 K below the storage tank temperature at night between 10 pm and 6 am The function is deactivated when the lower section of the storage tank cools down to 35 C the temperature difference falls below 4 K Note In the case of multi storage tank systems only storage tank 1 is used for storage tank back cooling oF The holiday symbol in the main menu indi cates that the holiday function Is active Activating deactivating the function Display screen 3 10 1 In the Holiday submenu display screen 3 10 gt Press GH the display screen on off is displayed gt Press the chosen option blinks gt Choose on or off 4a gt Confirm Exit the submenu gt Press GY 4 3 11 Frost protection ain Ia Display screen 3 11 Attention This function is only useful in systems without anti freeze in the heat transfer fluid Accessing the Frost protection submenu In the submenu Functions display screen 3 gt Press ij gt Press 4 until the display screen 3 11 Frost protection is displayed This function can prevent the solar system f
38. ing the on value gt Adjust the off value 24d gt Finish the temperature control parameters are stored 714 884 05 45 33 Activating time control FIT Mka Display screen 3 2 4 gt Press id the display screen Time controlled is displa yed gt Press GJ the control box blinks gt Activate deactivate time control 4 amp 4 gt Confirm J after activating the time control a cursor blinks in the time window Switching on the time window gt Move the cursor in 30 minute steps Qj gt Press Gj sets current cursor position to on the activated time segment shows as a bar display Switching off the time window If you now wish to deactivate the defined times then move the cursor to an existing bar and press the SET button gt Move the cursor in 30 minute steps Qj gt Press iJ sets current cursor position to off gt Press G amp S finishes the operation and stores the time control settings Leave the submenu gt Press G amp S 4 3 3 Solid fuel boiler lka Display screen 3 3 Access the Solid fuel boiler submenu In the submenu Functions display screen 3 gt Press Gj gt Press 4 until the display screen 3 3 Solid fuel boiler is displayed This function allows thermostatic control of a pump for additional heating of the solar storage tank using a solid fuel boiler Functional description
39. iority storage tank is loaded until its maximum storage temperature is reached Only then should the second priority storage tank be loaded If the second priority storage tank reaches its switch on temperature difference before the first priority storage tank does then first of all the second priority storage is loaded however only until the first priority storage tank has reached its switch on temperature difference In order to determine this value the switch on conditions are constantly checked while the second priority storage tank is loaded In addition the solar circuit is put to a stop and the increase of temperature in the collector array is monitored during the test on time If the first priority storage tank switch on temperature is reached then the first priority storage tank is loa 50 714 884 05 45 ded If this temperature is not reached then the second priority storage tank is loaded This test is repeated every 30 minutes When the device is delivered the time interval and the test on time are set to 30 minutes and 2 minutes but can be changed later on Defining the storage priority T wa Display screen 5 1 Sample display In the submenu Storage priority display screen 5 gt Press Gj Note The submenu screen displayed depends on the solar energy system chosen gt Press Storage priority blinks gt Press QQ change the storage priority gt Press
40. isplay Terminal layout NJ L N Ka ON 2 PE rlre pe frc Titit GND of ee O O gt A gt ANA eS gt x lt Neeeeeeeccocceeasssaa d 92 oO ee eecccces on 9 Z 3 ere seer d 2 J 4 O z iw e iS E ee T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 T4 Lower temperature sensor for storage tank 3 R1 Solar circuit pump 1 R2 Solar circuit pump 2 R3 Solar circuit pump 3 18 714 884 05 45 4 2 5 System 5 1 Collector array 3 Storage tanks 1 Pump 2 Valves Description If the switch on temperature difference between the coll ector array T1 and one of the three storage tanks T2 T3 T4 is exceeded then the solar circuit pump R1 is switched on and the two switching valves R2 R3 are set to the correct position depending on the storage tank to be loaded The storage tanks T2 T3 T4 are loaded one after the other according to the priority switching chap ter 4 5 until either the relevant switch off temperature difference between the collector array T1 and storage tanks T2 T3 T4 falls below the threshold or the maxi mum storage temperature is reached Loading strategy The loading strategy for storage tanks T2 T3 T4 is set to use temperatu
41. levant collector array switch off temperature difference falls below the threshold or the maximum storage temperature is reached or the loading temperature of the external heat exchanger T4 is rea ched The storage tank loading pump R1 is switched on as soon as the external heat exchanger T4 reaches its minimum loading temperature and the temperature difference between the external heat exchanger T4 and the storage tank T4 is larger than the switch on temperature difference Storage tank T3 is loaded until the minimum loading temperature of the external heat exchanger T4 is reached or the switch off temperature difference between the external heat exchanger T4 and the tank T3 falls below the threshold Loading strategy The loading strategy for the external heat exchanger and the loading strategy for the storage tank are factory set to use target temperature control The strategies can be adjusted or changed by using the Parameter menu chap ter 4 4 Note When using back up heating the minimum loa ding temperature of the external heat exchanger must be set using the Parameter menu chapter 4 4 It is essential that the minimum loading temperature is larger than the set switch off temperature of the back up heating Display at 4 56 2 X GOTO GND GND tet Lr ee me m ag m em vu r m gt N
42. minal layout NI L N R1 N R2 N n cin c R3 19 C24 039 A9 O39 f6 PE rele fpe nc MIS ne nae X mn GND GND GND r3 Lot e l Siva Buds ia Wire bridge T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Secondary external heat exchanger temperature sensor R1 Storage tank loading pump R2 Solar circuit pump 714 884 05 45 25 4 2 12 System 12 1 Collector array 2 Storage tanks with heat exchanger 3 Pumps Description The solar circuit pump R3 is switched on as soon as the switch on temperature difference between the collector array T1 and storage tank 1 T2 or 2 T3 is exceeded If the switch off temperature difference of storage tank 1 T2 and storage tank 2 T3 falls below the threshold or storage tank 1 T2 and storage tank 2 T3 reach their maximum storage temperature or the external heat exchanger T4 reaches its maximum loading tempera ture then the solar circuit pump R3 switches off If the switch on temperature difference between the external heat exchanger T4 and one of the two storage tanks T2 T3 is exceeded and the minimum loading temperature of the external heat exchanger T4 has been reached then storage tank loading pump 1 R1 for sto rage tank 1 T2 or storage tank loading pump 2 R2 for storage tank
43. minute steps Qi gt Press sets current cursor position to on the activated time segment shows as a bar display Switching off the time window If you now wish to deactivate the defined times then move the cursor to an existing bar and press the SET button gt Move the cursor in 30 minute steps Qi gt Press sets current cursor position to off gt Press G amp S finishes the operation and stores the time control settings Activating the temperature control Ea Display screen 3 1 4 gt Press 2 the display screen Temperature controlled is displayed gt Press Gj the control box blinks gt Activate deactivate temperature control gt Confirm a Choosing the Setting the limits temperature input after activating the temperature control the chosen input blinks gt Choose the input 29d gt Confirm the on value blinks after confirming the input gt Set the on value 4a gt Confirm the off value blinks after confirming the on value gt Adjust the off value 29a gt Finish Ga the temperature control parameters are stored Leave the submenu gt Press GZ 4 3 2 Back up heating lka Display screen 3 2 Accessing the Back up heating In the submenu Functions display screen 3 gt Press Gj gt Press 44 until the display screen 3 2 Back up heating is displayed 32 71
44. mperature difference between the collector array T1 and the storage tank T2 is larger than the switch on temperature difference The solar circuit pump R2 swit ches off when the switch off temperature falls below the threshold or the storage tank T2 reaches its maximum storage tank temperature or the heat exchanger reaches its maximum loading temperature The storage tank loading pump R1 is switched on as soon as the heat exchanger T3 reaches its minimum loading temperature and the temperature difference between the external heat exchanger T3 and the sto rage tank T2 is larger than the switch on temperature difference The storage tank T2 is loaded until the mini mum loading temperature of the external heat exchanger T3 falls below the threshold or the switch off tempe rature between the external heat exchanger T3 and the storage tank T2 falls below the threshold Loading strategy The loading strategy for the external heat exchanger and the loading strategy for the storage tank are factory set to use target temperature control The strategies can be changed by using the Parameter menu chapter 4 4 Note When using back up heating the minimum loading temperature of the heat exchanger must be set using the Parameter menu chapter 4 4 It is essential that the minimum loading temperature is larger than the set switch off temperature of the back up heating Display ka Display screen 2 11 Ter
45. n a pre defined temperature range Functional description If the temperature falls below the defined on value the output is switched on until the tempe rature rises above the off value 3 Display screen 3 7 1 In the Thermostat submenu display screen 3 7 gt Press the display screen on off is displayed gt Press ij Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4a gt Confirm J Choose the desired output Display screen 3 7 2 gt Press id the display screen Output is displayed gt Press Output blinks gt Choose the desired output 244 gt Confirm lt a Defining the input and temperature limits ar Display screen 3 7 3 gt Press 7 the display screen Temperature limits is dis played gt Press the input blinks gt Choose the input 4 amp 4 gt Confirm the on value blinks after confirming the input gt Choose the on value 29d gt Confirm the off value blinks after confirming the on value 40 714 884 05 45 gt Choose the off value 244 gt Finish the data entry the thermostat control parameters are stored Leave the submenu gt Press G amp S Time function 4 3 8 Accessing the Time functions submenu In the submenu Functions di
46. n installing the remaining components e g the solar collectors pump assemblies and the storage unit be sure to observe the appropriate installation instructions provided by each manu facturer Installation electrical connection commissioning and maintenance of the device may only be per formed by trained professional personnel The professional personnel must be familiar with this manual and follow the instructions contained herein 1 3 Liability waiver The manufacturer cannot monitor the compliance with these instructions or the circumstances and methods used for installation operation utiliza tion and maintenance of this controller Improper installation can cause damages to mate rial 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 con nection with the use of this controller on third parties rights The manufacturer preserves the right to put changes to product technical data or installation 714 884 05 45 and operation instructions without prior notice As soon as it becomes evident that safe operation is no longer possible e g visible damage please immediate take the device out
47. n the Heat quantity submenu display screen 3 6 gt Press the display screen on off is displayed gt Press Gj Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off Ua gt Confirm lt a finish the data entry Allocation of inputs i Display screen 3 6 2 gt Press 2 the display screen Inputs is displayed gt Press the supply temperature input blinks gt Choose the input 9 amp 4 gt Confirm the return temperature input blinks gt Choose the input 29d gt Confirm gt Finish data entry Setting the pulse value and glycol proportion i Display screen 3 6 3 gt Press id the display screen I Imp and glycol propor tion is displayed gt Press the I Imp or Imp I value blinks gt Adjust the setting to a value between 1 10 25 Imp or 10 20 50 100 200 1000 Imp I Ql gt Confirm the glycol proportion blinks gt Adjust the value Atv gt Confirm gt Finish data entry amp 3 Leave the submenu gt Press G amp S 714 884 05 45 39 Thermostat Mw Display screen 3 7 Accessing the Thermostat submenu In the submenu Functions display screen 3 gt Press gt Press 4 until the display screen 3 7 Thermo stat is displayed This function allows a controller output to be con trolled depending o
48. nnected after the update is complete To do so follow the proce dure described above for connecting the cable Note If the controller display remains blank and the display lighting blinks red after the update the program was not transferred fully Please check the cables and repeat the update 714 884 05 45 57 7 Troubleshooting The controller is a quality product conceived for years of continuous trouble free operation If a problem occurs the cause of the problem very often lies not in the controller but in the peri pheral components The following description of some well known problems should help the installer and operator to isolate the problem so that the system can be placed back into operation 7 1 Cause of failures Symptom Secondary symptoms Controller does not appear to function at all Display shows nothing No display illumination The pump symbol in the display rotates The solar pump does not operate despite the fact that the switch on conditions are satisfied The pump symbol in the display does not rotate The pump symbol in the display does not rotate the display illumination is red Manu blinks in the display The pump symbol in the display does not rotate the display illumination is red and blinks as quickly as possible and to avoid unnecessary costs Of course not all possible problems can be listed here However most of the normal problems encountered wit
49. of operation Attention Ensure that the device cannot f be accidentally placed into operation 1 4 Description of symbols Safety instructions Safety instructions in the text are marked with a warning triangle They indicate measures which can lead to injury of per sons or safety risks Attention indicates activities or processes that when not carried out correctly can lead to faulty operation or destruction of the device Notes contains important information on operation or function and are bordered by horizontal lines above and below the text In addition notes are bordered by horizontal lines above and below the text Operating steps are represented by small triangles gt Operating buttons are represented using the following symbols SET button ESC button amp Arrow up Arrow down 2 Display messages are described using italics 714 884 05 45 2 Installation 2 1 Opening closing the case Danger of electrocution Remove the mains power supply before opening the case The top of the case is retained by two retaining pegs on the upper edge of the lower half of the case and fastened with a screw gt Opening the case Loosen the screw and remove the upper case in an upwards direction gt Closing the case Position the upper case at an angle to the lower case Insert the hinge grooves into the retaining pegs of the lower case
50. of the blinking storage tank is displayed gt Switch between existing storage tanks Qa gt Press Gj the chosen storage tank and corresponding maximum value blinks gt Set the maximum storage tank temperature 29 a gt Confirm the value gt Leave the submenu amp 46 714 884 05 45 4 4 2 Switch on temperature dif ference ka Display screen 4 2 In the submenu Parameters display screen 4 gt Press gt Press 4 until the display screen 4 2 Switch on temperature difference is displayed gt Press the input window with the switch on tempe rature difference on between the blinking storage tank and the collector is displayed gt choose between the various switch on tempe rature differences Ud gt Press Ga the chosen storage tank collector and current switch on temperature difference blinks gt Change the switch on temperature difference gt Confirm the value gt Leave the submenu Gz 4 4 3 Switch off temperature dif ference ka Display screen 4 3 In the submenu Parameters display screen 4 gt Press Gj gt Press 4 until the display screen 4 3 Switch off temperature difference is displayed gt Press Gj the display screen with the switch off tempe rature difference off between the blinking storage tank and collector is displayed gt choose between the various switch off tempe rature differences Ud gt Pre
51. off tempera ture difference between the external heat exchanger T4 and the storage tank T3 falls below the threshold Loading strategy The loading strategy for the external heat exchanger and the loading strategy for the storage tank are factory set to use target temperature control The strategies can be adjusted or changed by using the Parameter menu chap ter 4 4 Note When using back up heating the minimum loa ding temperature of the external heat exchanger must be set using the Parameter menu chapter 4 4 Display 2 2 Se zZ N N r 3 E i L in c nl X 1ean en a0 GND GND ve oe aoe It is essential that the minimum loading temperature is larger than the set switch off temperature of the back up heating Note When no voltage is on the system the switching valve R3 must be set to collector array 1 T1 T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 T4 Secondary external heat exchanger temperature sensor R1 Storage tank loading pump R2 Solar circuit pump R3 3 way switching valve 714 884 05 45 29 Ika Display screen 3 Open the submenu Functions gt Press j for about 2 seconds gt Choose the Functions submenu 294 Leave the submenu gt Press G amp S Additi
52. onal controller settings can be made by using the Functions submenu The controller also offers the possibility of simultaneously activating more than one function The following submenus can be opened using the Functions submenu e Circulation usdnuteorsnamewamcccacietneselice 4 3 1 e Back up heating iwc cissnuivesitenccsdveceisswesnwceania 4 3 2 Solid fuel boiler sea cesecenienscnavitocciivanertusennts 4 3 3 e Heating return increase sses 4 3 4 E a TE E E 4 3 5 Heat quantity eesosa 4 3 6 TSM S al iniisa 4 3 7 Time function auicwtecniavanoawsantuarcydnetuinanslnnsvien 4 3 8 a A A E E 4 3 9 Holda y earonenaisns disaeiuaa rests 4 3 10 Frost ProtectiOn ccccccccseseeeseeeeeeeeenees 4 3 11 Note The selectable functions sometimes require an extra controller output for controlling a pump or switching valve When all outputs are already occupied a function requiring this output cannot be activated In this case an information window displays a corresponding message It can be closed using the ESC button Information windows The following information windows are displayed In this case all outputs are occupied so that the function requiring this output cannot be activated Here not all settings necessary for activating this function have been made yet 30 714 884 05 45 Circulation 4 3 1 Mika Display screen 3 1 Accessing the Circulation su
53. ote When no voltage is on the system the switching valve R2 must be set to storage tank 1 T2 Display MES Display screen 2 3 c n c R3 19 2 4156 2 i 2 2 J N z A 3 n c n c X goles GND GND GND o esoo osoo eooo J IN TN Wire bridge T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 R1 Solar circuit pump 1 R2 3 way switching valve 1 714 884 05 45 17 4 2 4 System 4 1 Collector array 3 Storage tanks 3 Pumps Description If the switch on temperature difference between the collector array T1 and one of the three storage tanks T2 T3 T4 is exceeded then the appropriate solar circuit pump R1 R2 or R3 is switched on The storage tanks T2 T3 T4 are loaded one after the other according to the priority switching chapter 4 5 until either the relevant switch off temperature difference between the collector array T1 and storage tanks T2 T3 T4 falls below the threshold or the maximum storage temperature is rea ched Loading strategy The loading strategy for storage tanks T2 T3 T4 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control D
54. rays T1 T2 then both pumps R1 R2 are switched on The pumps switch off independently of each other when either the relevant switch off temperature between one or both of the collector arrays T1 T2 and the storage tank T3 falls below the threshold or the maximum storage tempera ture is reached Loading strategy The loading strategy for the storage tank T3 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Display HES Display screen 2 6 N L N R1 N R2 N in cin c R3 Ap 929 V3 A O59 i 6 PE pele fre nel L IE ge ME PX TaT GND GND GND cr re ET gt e e E feee geee feee l 1 Wire bridge T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 R1 Solar circuit pump 1 R2 Solar circuit pump 2 20 714 884 05 45 4 2 7 System 7 2 Collector arrays east west roof 1 Storage tank 1 Pump 1 Valve Description The solar circuit pump R1 is switched on as soon as the switch on temperature difference between one of the two collector arrays T1 T2 and the storage tank T3 is exceeded The switching valve R2 is always set so that flow occurs through the warmer of the two collector
55. re differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Note When no voltage is on the system switching valve 1 R2 must be set to storage tank 1 T2 and switching valve 3 R3 must be set to storage tank 2 T3 Display Terminal layout NI L OND R1 OI Re 4 5 6 PE PE pe Inch t o l TNA GND GND Ree bese booo beoeo feee a Z S j 0 A x TZIRE faoa Dai l s i 4 i a n m 4 ah I l l L Mi l gt gt Orn Me T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 T4 Lower temperature sensor for storage tank 3 R1 Solar circuit pump 1 R2 3 way switching valve 1 R3 3 way switching valve 2 714 884 05 45 19 4 2 6 System 6 2 Collector arrays east west roof 1 Storage tank 2 Pumps Description If the switch on temperature difference between the sto rage tank T3 and one or the other of the collector arrays T1 T2 is reached then either solar circuit pump R1 for collector array T1 or solar circuit pump R2 for collector array T2 is switched on depending on where the tem perature difference occurs If the switch on temperature difference is reached for both collector ar
56. reezing up if water is used as the heat transfer fluid The controller switches on the pump and pumps hot water from the storage tank to the collector to prevent it freezing The function activates the pump when the collector temperature drops below 5 C The function deactivates the pump again when the collector temperature rises above 7 C again menu indicates that the frost protection X The frost protection symbol in the main function Is active Note This function only allows a solar energy system to be used without anti freeze in very spe cific situations This applies in regions where tem peratures close to the freezing point are reached on very few days each year Safety systems and 44 714 884 05 45 anti frost measures must be taken and installation time if this is required We also recommend using suitable anti freeze fluids to prevent corrosion g the function a Display screen 3 11 1 In the Frost protection submenu display screen 3 11 gt Press the display screen on off is displayed gt Press the chosen option blinks gt Choose on or off 42 gt Confirm lt a Exit the submenu gt Press GZ 714 884 05 45 45 4 4 Parameters ka Display screen 4 Open the submenu Parameters gt Press for about 2 seconds gt Choose the Parameters submenu Qj Leave the submenu Parameters g
57. s at the sensors at any time for control purposes To do so press ESC to close the information window and acces sing the temperature values using the arrow keys Press the SET button to open the information window again After initial commissioning or testing for function gt Slide the operating switch to the Auto posi tion 3 4 2 This mode of operation is the automatic controller mode and should be set as standard for normal operation Auto mode of operation Note The operating switch should always be set to Auto 3 4 3 OFF mode of operation OFF SwSstenn Ho Display screen OFF In OFF mode all outputs R1 R2 R3 are swit ched off The display is lit with a red background and shows OFF in reverse as well as the control ler software version number and the number of the chosen system 714 884 05 45 11 4 Device setup System relevant settings for the controller can be made using the following menus gt VMAS oat payee naive deed EE A 4 1 e VOIS ercteninetendin nivennttnnaemseunsruateaaeensaantmouty 4 2 BPO ONS cue tacnattnane E T E 4 3 Pare CNS errnet ennaa sats 4 4 Storage priority esseeri 4 5 e Language SelectiONn cceseeeeeeeeeeeeeeeeeees 4 6 Factory SCUUMOS saxacurincevaanevegneinanieateareenciene 4 7 Opening a menu gt Press for about 2 seconds gt Choose the menu 2444 gt Press
58. se 714 884 05 45 65
59. splay screen 3 gt Press Gj gt Press 4 until the display screen 3 8 Time function is displayed This function allows a controller output to be con trolled depending on a pre defined time range Activating deactivating the function 3 Display screen 3 8 1 In the Time function submenu display screen 3 8 gt Press Gj the display screen on off is displayed gt Press S Note An information window is displayed if the function cannot be activated the chosen option blinks gt Choose on or off 4d gt Confirm lt a Choose the desired output Display screen 3 8 2 gt Press id the display screen Output is displayed gt Press Output blinks gt Choose the output 29d gt Confirm lt a Setting the time window MUSS Display screen 3 8 3 gt Press 7 the display screen Time controlled is displa yed gt Press Gi the control box blinks gt Activate deactivate time control 4 amp 4 gt Confirm a after activating the time control a cursor blinks in the time window 714 884 05 45 41 Switching on the time window gt Move the cursor in 30 minute steps Qi gt Press sets current cursor position to on the activated time segment shows as a bar display Switching off the time window If you now wish to deactivate the defined times then move the cursor to an existing bar and press the SET
60. ss Ga the chosen storage tank collector and current switch off temperature difference blinks gt Change the switch off temperature difference gt Confirm the value a gt Leave the submenu amp 714 884 05 45 47 4 4 4 Limiting the loading tempera ture external heat exchangers only ka Display screen 4 4 In the submenu Parameters display screen 4 gt Press Gj gt Press 4 until the display screen 4 4 Limiting the loading temperature is displayed gt Press the display shows the maximum loading tem perature of the blinking storage tank external heat exchanger gt Choose between the max min values for storage tank 1 storage tank 2 Qj gt Press Ga the chosen max or min value blinks gt Adjust the value Qi gt Save the value gt Leave the submenu With external heat exchangers a maximum and minimum loading temperature measured at the external heat exchanger is set for every storage tank The temperature range of the storage tank loading can be limited through the use of the maximum and minimum loading temperature function In this way e g destruction of the thermal layering in the storage tank and subse quent starting of a fossil fuel heating system can be avoided or undesired high temperatures in the upper area of the storage tank risk of scalding can also be avoided 4 4 5 Storage tank loading strategy waa Display s
61. ss for Yes aj the controller deletes all set values and opens the Time display screen After you set the time the Solar system display screen opens to allow you to select a solar system gt Press for No amp amp the controller exits the display screen without deleting the values The following are reset e All parameters e The system selected e All functions and their values are set to default values e The min max values of the temperature sensors e Delta operating hours e Storage tank priority reset to default sequence 1 2 3 e Delta heat meter e System time is reset to 12 00h 52 714 884 05 45 5 Main menu In normal operation of the controller the main menu with the selected solar system and other functions set are shown on the display You can access the values of the individual sensors pumps switching valves running times and additional functions set using the arrow keys Other symbols provide information on the condition of the solar system Sun Shown as soon as the switch on condition of the solar circuit is fulfilled Collector overheated Shown when the collector tempera ture exceeds 130 C Hidden when the collector temperature falls below 127 C Temperature sensor Shows the temperature sensor selected The numbers correspond to the connection to the terminal layout Solar system OS WO WO Temperature indication The temperature of the s
62. storage tank 1 T3 or solar circulation pump R2 for storage tank 2 T4 is switched on The switching valve R3 is always set so that flow occurs through the warmer of the two collector arrays Both storage tanks T3 T4 are loaded one after the other according to the priority switching chapter 4 5 until either the relevant switch off temperature difference falls below the threshold or the maximum storage temperature is reached Loading strategy The loading strategy for storage tanks T3 T4 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Note When no voltage is on the system the switching valve R3 must be set to collector array 1 T1 Display 2 X aoran anp ano GND GND U m U m U en U 0 z A Z UTN NA 3 NA T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 T4 Lower temperature sensor for storage tank 2 R1 Solar circuit pump 1 R2 Solar circuit pump 2 R3 3 way switching valve 1 24 714 884 05 45 4 2 11 System 11 1 Collector array 1 Storage tank with heat exchanger 2 Pumps Description The solar circuit pump R2 is switched on as soon as the te
63. strategies can be adjusted or changed by using the Parameter menu chap ter 4 4 Note When using back up heating the relevant minimum loading temperature of the external heat exchanger must be set using the Parameter menu chapter 4 4 It is essen tial that the minimum loading temperature is larger than the set switch off temperature of the back up heating Note When no voltage is on the system the switching valve R3 must be set to storage tank 1 T2 Display Display screen 2 13 4 56 ia G d 1x CAII GND GND Si ae ae T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 T3 Lower temperature sensor for storage tank 2 T4 Secondary external heat exchanger temperature sensor R1 Storage tank loading pump R2 Solar circuit pump R3 3 way switching valve 1 714 884 05 45 27 4 2 14 System 14 2 Collector arrays east west roof 1 Storage tank with heat exchanger 3 Pumps Description If the switch on temperature difference between the storage tank T3 and one or the other of the collector arrays T1 T2 is reached then either solar circuit pump 1 R2 for collector array 1 T1 or solar circuit pump 2 R3 for collector array T2 is switched on The solar circuit pumps 1 R2 and 2 R3 switch off independently of each other when either the re
64. t Press Ge When the device is delivered the parameters are set so that the controller provides optimum results when used with the integrated solar energy system The parameters can be modified to suit the indi vidual requirements of the system In this case the operating data of the solar components used must be observed Note The parameter settings are programmed to be dependent on the solar energy system chosen This means that not all parameter settings are available for all types of solar energy systems The displays in the Parameter submenu always displays the currently chosen and therefore active system An information window informs about the settings menu and the parameters that can be modified The following submenus can be opened using the Parameter submenu e Maximum storage tank temperature 4 4 1 e Switch on temperature difference 4 4 2 e Switch off temperature difference 4 4 3 e Limiting the loading temperature 4 4 4 e Storage tank loading strategy 4 4 5 e Solar circuit loading strategy 06 4 4 6 RPM CONTO eeann a 4 4 7 4 4 1 Maximum storage tank tem perature ka Display screen 4 1 In the submenu Parameters display screen 4 gt Press until the display screen 4 1 Maxi mum storage tank temperature is displayed gt Press again the display screen Maximum storage tank temperature
65. to open the desired submenu Leave the menu gt Press Ge Please find further information about the subme nus in the following chapters Display description The fully graphical display of the controller allows simple and rapid operation and or setup by the user The following symbols are displayed for information Menu diagram Display screen number The menu and infor displays the number of the mation windows are current submenu displayed using cor responding graphic symbols AOW UB is displayed when the controller can be opera ted using the arrow up a OFT is displayed when the operation or system set ting can be carried out using the SET button is eae when the operation or system set ting can be carried out using the ESC button Scroll bar displays the position of the current submenu in the context of the other menu items of the relevant category Arrow down is displayed when the controller can be ope rated using the arrow down 12 714 884 05 45 Menu structure MoI MeN In normal operation the main menu is always 5 displayed and shows the user the currently selected 4 solar system and a temperature value A 2 sec Main menu PESC 4 1 4 3 4 4 4 5 4 6 4 7 Time Systems Functions Parameters Storage priority Language Factory settings selection 4 2 1 System 1 4 2 2 System 2 4 2 3 System 3 4 2 4 System 4 4 2 5 System 5 4
66. torage tanks T3 T4 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Note When no voltage is on the system switching valve 1 R2 must be set to storage tank 1 T3 and switching valve 2 R3 must be set to collector array 1 T1 Display Terminal layout NJ L N Ra Oh 2 N n c n c 3 PE pelefelncl E L in c aie X aaan GND GND I I I l Rael aaee ciel ie Wire bridge Lo E r 4 4 oe l PS SB eB ee ee ee ee y T1 Temperature sensor for collector array 1 T2 Temperature sensor for collector array 2 T3 Lower temperature sensor for storage tank 1 T4 Lower temperature sensor for storage tank 2 R1 Solar circuit pump 1 R2 3 way switching valve 1 R3 3 way switching valve 2 714 884 05 45 23 4 2 10 System 10 2 Collector arrays east west roof valve controlled 2 Storage tanks 2 Pumps 1 Valve Description If the switch on temperature difference between one of the two tanks T3 T4 and collector array 1 T1 or coll ector array 2 T2 is exceeded then the switching valve R3 switches the relevant collector array T1 or T2 into the solar circuit Depending on which storage tank has reached the switch on temperature solar circuit pump R1 for
67. ttlement The warrantee expires 24 months after the purchase contract has been completed by the end user unless the manufacturer has expres sively agreed to an extension period in writing The manufacturer s warrantee based on the purchase contract with the end user is not affected by these present guarantee obligations The manufacturer is entitled to carried out the warrantee by repairing the fault or delivering a replacement This does not include exchange ship ping or reinstallation costs If repairs or replace ment delivery are is not possible or not carried out within an appropriate time despite a reaso nable grace period determined by the customer the decrease in value caused by the fault will be replaced or provided that is in the user s interests not sufficient the contract will be changed Further claims against the manufacturer based on this guarantee obligation in particular customer claims for damages due to lost profit compensa tion for use and direct damages are excluded pro vided claims must not be made according to law 62 714 884 05 45 9 Technical Data Temperature Difference Controller System voltage 230 V 15 50 Hz optional 115 V 15 60 Hz Max self consumption lt 3W Inputs 6 5 x temperature determination Pt1000 1 x temperature determination or pulse Output 3 1 x switch output relay max switching current 1 A
68. ture 1272C Collector switching hysteresis for valve switching 10K Storage tank reactivation hysteresis max 3K 64 714 884 05 45 RS232 interface RS232 is a serial interface for transfering data bet ween the controller and a PC or laptop This inter face allows you to copy a new software version to the controller RS232 plug layout and connection 4 pin screw type terminal 9 pin Sub D 1 3 RXD 2 2 TXD 3 5 GND RS232 cable connection 4 pole screw terminal A SET Coca oo x ede Nae bas E SIS S S2222 z 1 i aa EE S geseaas j BSSescecea B Saeni Q Q SRI E C gt JIC gt C amp fE G Ba CE a p G p 0 qazo a A G p CE p ro Sa ppg SS SS Picture RS232 cable connection RS232 connector solder side Cable link Max cable length 5 m Data transfer speed 115 2 kB s Use an RS232 RS485 converter for data transfer over greater distances IS Bus IS Bus is a communication interface between the controller and expansion modules or remote dis plays IS Bus is currently not yet in u
69. use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Display 1A oo k Display screen Terminal layout 2 1 N L N R1 N R2 N in cin c R3 19 029 GND GND GND GND PE PE PE PE Mae S TIE RE E X fara o tal a l Wire bridge l T1 Temperature sensor for collector array 1 T2 Lower temperature sensor for storage tank 1 R1 Solar circuit pump 1 714 884 05 45 15 4 2 2 System 2 1 Collector array 2 Storage tanks 2 Pumps Description If the switch on temperature difference between the collector array T1 and one of the two storage tanks T2 T3 is exceeded then the appropriate solar circuit pump R1 or R2 is switched on Both storage tanks T2 T3 are loaded one after the other according to the priority switching chapter 4 5 until either the relevant switch off temperature difference between the collector array T1 and storage tanks T2 T3 falls below the threshold or the maximum storage temperature is reached Loading strategy The loading strategy for storage tanks T2 T3 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Display
70. utput on for e Pumps without integrated electronic speed control The RPM control of the R1 and R2 outputs occurs via internal electronic relays in the controller Switched output off for e Pumps with integrated electronic speed control e Valves this setting is automatically set by the controller when a solar system with valves is selected e External relays e g for controlling pumps RPM control speed control on The control system attempts to maintain a con stant temperature difference between the collec tor and the storage tank The pump performance is continuously adjusted and the volume flow pumped is increased or reduced depending on the temperature difference Switched output speed control off When switched on the pump runs at maximum speed and delivers a constant volume flow 4 5 Storage priority Open the submenu Storage priority gt Press for about 2 seconds gt Choose the Storage priority submenu Qi Leave the submenu gt Press G amp S Description If 2 or 3 storage tanks are used in a solar energy system a storage priority must be set The storage priority sets the priority according to which the storage tanks are loaded One must decide bet ween first priority and second priority storage tanks Control If the first priority storage tank reaches its switch on temperature difference before the second priority storage tank does then the first pr
71. vant storage tank T3 or T4 into the solar circuit If the switch on temperature difference between the storage tanks T3 or T4 and one or the other of the collector arrays T1 T2 is reached then either solar cir cuit pump R1 for collector array T1 or solar circuit pump R2 for collector array T2 is switched on depending on where the temperature difference occurs If the switch on temperature difference is reached for both collector arrays T1 T2 then both pumps R1 R2 are switched on The switching valve R3 controls the loading of the storage tanks T3 T4 according to the priority switching chapter 4 5 The pumps R1 R2 switch off indepen dently of each other when either the relevant switch off temperature for one or both of the collector arrays T1 T2 with regard to the storage tanks T3 or T4 falls below the threshold or the maximum storage temperature is reached Loading strategy The loading strategy for the storage tanks T3 T4 is set to use temperature differential control at the factory and can be adjusted using the Parameter menu chapter 4 4 or set to use target temperature control Note When no voltage is on the system the switching valve R3 must be set to storage tank 1 T3 Display aman GND GND E EER ER E d ee Py beee foso gree geee N In cln c if nen x I I I a gt Ll y N
72. vice The protective conductor must also be connected Cables conforming to at least type HO5 VV NYM must be used T1 Outputs R1 Semiconductor relays Triac also suitable for RPM control max switching current 1 A Output R2 Semiconductor relays Triac also suitable for RPM control max switching current 1 A Output R3 electromagnetic relays available with Potential free contact without wire bridge or Switched output 230 115V with wire bridge see chapter 2 3 3 Max switching current 3 5 A T2 mi xvi of olo a eT ole Hf o a J a 5 Qa Inputs Inputs 1 5 for Pt1000 tem perature sensor Input 6 for Pt1000 tem perature sensor or impulse generator e g for measuring heat quantities Note Do not connect pumps with integrated electronic con trollers See chapter 4 4 7 714 884 05 45 2 3 3 Connection diagram for output R3 R3 as 230 V 115 V switched output R3 as voltage free output Outputs Outputs Output Output Output Output Output Output R1 R2 R3 PE PE PE n c L L n c nic X mM oc 2 3 4 Connection diagram for input Inputs 1 5 Input 6 Recording the temperature Recording the temperature or pulse Inputs Input Input i ji T1 T5 via reed relay via open collector polarity irrelevant Ca clea polarity irrelevant polarity relevant Note The connection of th

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