Operating instructions Solar thermal system with
Contents
1. Specifications subject to change without notice 13 EM Notes for the user 5 4 Checking operating pressure with possible re adjustment Pressure fluctuations in the solar pumping circuit due to temperature changes are nor mal and do not lead to faults in the solar thermal system Check the system pressure on the pressure gauge gt Fig 3 when the system is cold about 20 C If pressure drops A pressure drop can be caused by the following There is a leak in the solar thermal circuit An automatic air vent has expelled air or vapour If the pressure of the solar thermal system has dropped e Check whether heat transfer fluid has collected in the holding tank under the solar pumping sta tion e Callin a qualified heating engineer if the system pressure drops 0 5 bar below the level recorded in the commissioning log gt Installation and servicing instructions for the solar pumping station 5 5 Cleaning the collectors Danger Risk of death by falling from roof N e Inspection maintenance and cleaning work on the roof must only be carried out by qualified technicians Due to the self cleaning effect when rain falls the collectors do not usually need cleaning Buderus 14 Logamatic SC40 Specifications subject to change without notice o amp N o 7 2 paidoo aq ued sen eA wajsXs jeuueu sejos 104 Bo1 9 g2. exceeded Tab 2 Status indications Buderus 10 Logamatic SC40 Specifications subject to change without notice Faults 4 Faults 4 1 Faults indicated on the display When indicating a fault the display is back lit in red In addition the type of fault is indicated by sym bols The individual fault messages can be retrieved using the rotary selector Fault messages con tinue to be displayed until the fault is rectified e If a fault occurs contact a qualified heating engineer Indication Type of fault Effect Possible causes Remedy v Sensor failure S1 S8 Associated components pumps valves are switched off Temperature sensor not incorrectly connected Contact your heating engineer Temperature sensor or sensor lead defective Contact your heating engineer 4 Sensor short circuit S1 S8 Associated components pumps valves are switched off Temperature sensor or sensor lead defective Contact your heating engineer No fluid flow in solar systems secondary system The temperature difference between collector temperature sensor and bottom cylinder temperature sensor or between heat exchanger flow tempera ture sensor and bottom cylinder temperature sensor is too great Air in the system Contact your heating engineer Pump is stalled Contact your heating engineer Valves or shut
3. offs are closed Contact your heating engineer Pipe clogged Contact your heating engineer Daily heating running time error The daily heating function has not been carried out Target temperature not reached Contact your heating engineer Collector connections reversed Collector temperature drops 10 K C within 15 seconds of switching on Collector connections reversed Contact your heating engineer Tab 3 Possible faults indicated on the display Logamatic SC40 Specifications subject to change without notice Buderus 11 Faults 4 2 Faults not indicated on the display Type of fault Effect Possible causes Remedy Pump not running even though conditions for switching on are met The solar storage cylinder is not being supplied by the solar thermal system No power supply fuse or power cable faulty Contact a qualified electrician Pump switched off in manual mode Contact your heating engineer The temperature at the bottom of the cylinder is close to or above the set maximum cylinder temperature When the temperature drops 3 K C below the maximum cylinder tempera ture the pump switches on The collector temperature is close to or above the set maximum col lector temperature When the temperature drops 5 K C below the maximum collector tempera ture the pump switches on There is no electri
4. 7 747 017 474 GB 2007 08 OSW Operating instructions Solar thermal controller 7747006071 00 1 SD Solar thermal system with For the Owner Logamatic SC40 Please read carefully before operation Buderus m Contents Contents Safety instructions and explanation of symbols 3 1 1 General safety instructions 3 1 2 Symbols 4 2 Details of the product 5 2 1 EU Declaration of Conformity 5 2 2 Product description 5 3 Operation 7 3 1 Elements of the solar pumping station 7 3 2 controller controls 8 93 8 Viewing system data 9 4 Faults 11 4 1 Faults indicated on the display 11 4 2 Faults not indicated on the display 12 5 Notes for the user 13 5 1 Why is regular maintenance important 13 5 2 Important notes on heat transfer fluids 13 5 3 Checking the solar thermal system 13 5 4 Checking operating pressure with possible re adjustment 14 5 5 Cleaning the collectors 14 6 User s log 15 Buderus 2 Logamatic SC40 Specifications subject to change without notice Safety instructions and explanation of symbols E 1 Safety instructions and explanation of symbols 1 1 General safety instructions About this manual This manual contains important information about the safe and correct installation and operation of the solar thermal system e Ask your heating engineer to provide you with all the technical documentation relating to the solar thermal system e Read this manual carefully and keep it for
5. Collector array Consists of flat plate collectors or evacuated tube collectors Solar pumping Consists of the pump together with safety valves and shut off valves for the station solar thermal circuit Solar system Used for storing the collected solar energy cylinder There are three different types Domestic hot water cylinder Reserve cylinder for heating boost function Combination cylinder for domestic heating back up and for domestic hot water Controller Includes two temperature sensors SC40 Operating principle If the set temperature difference between the collector array gt Fig 1 item 1 and the solar cylinder gt Fig 1 item 3 is exceeded the pump in the solar pumping station is switched on The pump transports the heat transfer medium the heat transfer fluid via the circuit through the col lector array to the consumer This consumer is generally a solar storage cylinder There is a heat exchanger in the solar storage cylinder This transfers the heat collected from the sun from the trans fer medium to the water intended for domestic use or heating If necessary a hot water mixer unit is fitted to the cylinder to limit the hot water outlet temperature Controller The controller is designed for use with a solar thermal system It can be mounted on a wall or is inte grated in a solar pumping station In normal operating mode the display screen on the controller stays i
6. bol and N are printed on a grey background Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions Caution indicates that minor damage to property could result Warning indicates that minor personal injury or serious damage to property could result Danger indicates that serious personal injury could result In particularly serious cases lives could be at risk Notes are identified by the symbol shown on the left They are bordered by horizontal a lines above and below the text Notes contain important information in cases where there is no risk of personal injury or damage to property Buderus 4 Logamatic SC40 Specifications subject to change without notice Details of the product 2 Details of the product 2 1 EU Declaration of Conformity The design and operation of this product conform to the applicable Euro pean directives and supplementary national requirements Confirmity has been demonstrated 2 2 Product description Diagram of solar thermal system 4 7747006071 01 1 SD Fig 1 System diagram Collector array Solar pumping station Solar system cylinder Controller SC40 khoOnN Buderus Logamatic SC40 Specifications subject to change without notice 5 ES Details of the product Main components of the solar thermal system
7. cal power lead to the pump or it is not connected Contact your heating engineer Cooling function active The controller checks which cylin der can be charged only in systems with two cylinders Pump is faulty Contact your heating engineer The system animation on the display is running and the pump is humming The solar storage cylinder is not being supplied by the solar thermal system The pump is stalled Contact your heating engineer Temperature sensor is displ aying an incorrect figure Pump is being activated deac tivated too early too late Temperature sensor not correctly installed Incorrect temperature sen sor installed Contact your heating engineer Domestic hot water is too hot Risk of scalding Cylinder maximum temperature and hot water mixer are set too high Contact your heating engineer Domestic hot water too cold or hot water flow rate too slow Domestic hot water thermostat on heating appliance on heating con troller or on mixing valve is set too low Contact your heating engineer indicated on the display Tab 4 Possible faults not Buderus 12 Logamatic SC40 Specifications subject to change without notice Notes for the user 5 Notes for the user 5 1 Why is regular maintenance important Your solar domestic hot water system or domestic hot water and central heating booster system is vir
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9. future reference e Always observe the safety instructions to prevent injury and damage to property Intended use The temperature difference controller referred to from now on as the controller may only be used for operating solar thermal systems under the permissible ambient conditions 0 50 C The controller must not be used outdoors in damp rooms or in rooms where easily flammable gas mixtures could form e Only operate the solar thermal system as intended and when the system is in proper working order e In the event of danger disconnect the controller from the mains power supply by means of the isolating device e g mains plug e Any work that requires the controller to be opened may only be carried out by a qualified electri cian risk of fatal electric shock Domestic hot water temperature If the cylinder maximum temperature is set higher than 60 C there is a risk of scalding at the hot water points Ask your heating engineer what the maximum hot water temperature has been set to e Only draw hot water from mixer units Disposal e Dispose of packaging in an environmentally responsible manner e When replacing components dispose of the old parts in an environmentally responsible manner Buderus Logamatic SC40 Specifications subject to change without notice 3 nM Safety instructions and explanation of symbols 1 2 Symbols Safety instructions in this document are identified by a warning triangle sym
10. g 3 item 2 the pressure gauge indicates the system pressure The safety valve above it opens and releases the excess fluid pressure via the blow off pipe if the system pressure rises above 6 bar 7747004985 09 1 SD Fig 3 Solar pumping station 1 Display of temperature for solar return 2 Pressure gauge and safety valve 3 Display of temperature for solar flow Buderus Logamatic SC40 Specifications subject to change without notice y Ea Operation 3 2 controller controls Css amem I 8 7747006072 23 1 SD Fig 4 controller and display Display Rotary selector Back button OK button Symbol for temperature sensor Displays of temperatures hours of operation etc Valve symbol black open outlet Active circulation diagram ONO hWND Control Symbol Functions Rotary selector Selecting system settings OK button Opening submenus and changing settings engineers only Back button ac Reverting to collector panel temperature display View level Switching off the system e Disconnect the controller from the mains power supply by means of the isolating device e g mains plug Buderus 8 Logamatic SC40 Specifications subject to change without notice Operation 3 3 3 Viewing system data You can use the rotary selector to vie
11. lluminated in green yellow for 5 minutes after the last button was pressed acti vated by pressing the rotary selector CO for example The display shows the following Pump status as a simple system diagram System values e g temperatures Selected functions Fig 2 Possible display indications Fault messages Buderus 6 Logamatic SC40 Specifications subject to change without notice Operation 3 3 Operation Your professional heating technician will set the solar thermal system when commissioning it and it will run automatically e Have your heating engineer explain to you how the solar thermal system works and how to oper ate it e Do not switch off the solar thermal system during long absences e g when going on holiday When installed according to the manufacturer s specifications the solar thermal system is intrin sically safe e After a power failure or a long absence check the operating pressure on the pressure gauge of the solar thermal system gt Section 5 4 page 14 Warning Risk of damage to system if controller settings are changed N e Do not make any changes to any settings not described here 3 1 Elements of the solar pumping station The main components of the solar pumping station are Thermometers gt Fig 3 items 1 and 3 The built in thermometers display the temperatures of the solar return blue and flow red Pressure gauge gt Fi
12. tually maintenance free However we recommend that you have your system serviced at least every 2 years by your heating engineer In that way you can ensure smooth and efficient operation and early detection and elimi nation of any possible damage 5 2 Important notes on heat transfer fluids Warning Risk of injury from contact with heat transfer fluid water and propylene gly N col mixture e f heat transfer fluid comes into contact with eyes hold eyelids wide open and thor oughly rinse eyes with running water e Keep heat transfer fluid out of reach of children The heat transfer fluid is biodegradable Your engineer has been instructed to ensure when commissioning the solar thermal system that the heat transfer fluid provides protection against freezing at tempertures down to at least 25 C 5 3 Checking the solar thermal system You can contribute to the smooth functioning of your solar thermal system by doing the following Checking the temperature difference between flow and return and between the collector and cyl inder twice a year Checking the operating pressure for solar pumping stations Checking the heat quantity if a calorimeter has been installed and or the operating hours The completed log can help qualified technicians when checking your solar thermal Enter the values in the log on page 15 which may also be copied system and performing maintenance Buderus Logamatic SC40
13. w the following system data if the relevant components are installed and the supplementary functions have been activated by your heating engineer Display Supplementary function System data None Temperature C Hours of operation cumulative h Hours of operation today h d Pump speed Pump and valve status Heat meter Flow temperature C Return temperature C Heat usage cumulative kWh Heat usage today kWh d Heat exchanger anti icing Flow temperature C system Hours of operation cumulative h Hours of operation today h d Activated functions Other functions Shows other active functions Daily heating Possible indications display flashes when function is active Double Match Flow Evacuated tube collector function S Europe function Daily heating Cooling function Tab 1 Overview of system data Buderus Logamatic SC40 Specifications subject to change without notice 9 Ea Operation Status display Cylinder maximum temperature The cylinder maximum temperature is displayed if the set limit is reached or exceeded Collector minimum temperature The collector minimum temperature is displayed if the temperature drops below the limit e g 20 C Collector maximum temperature The collector maximum temperature is displayed if the set limit e g 120 C is
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