Operating instructions for users Logano plus SB625
Contents
1. gt Leave the building and telephone your gas supplier and authorised contractor from an outside phone If you smell flue gas gt Switch off the appliance gt Open windows and doors gt Notify an approved heating contractor Electric shock hazard gt Before carrying out any work on the heating system disconnect the heating system from the power supply across all poles For example activate the emergency stop switch outside the boiler room It is not sufficient to switch OFF the control unit gt Secure power supply against unintentional reconnection gt Conform with country specific rules and regulations when making the electrical connection commissioning servicing and carrying out maintenance Thermal disinfection gt Risk of scalding Monitor any operation with DHW temperatures exceeding 60 C Buderus Logano plus SB625 6 720 806 364 2012 07 3 Ee About the appliance Inspection and maintenance gt Recommendation for customers Arrange a maintenance and inspection contract with an approved heating contractor covering an annual inspection and responsive maintenance gt The user is responsible for the general and environmental safety of the heating system gt Immediately remedy all faults to prevent system damage gt Use only original genuine spare parts from the manufacturer Damage caused by the use of spare parts and accessories not supplied by the manufacturer are excluded from the m2. in the heating system 2 0 0 0 ccc cece eee eee ences 8 7 3 2 Sealed unvented systems 00sec ee eens 9 7 3 3 Installations with automatic pressurisation systems 9 8 Energysaving tips cccce cee ce csc eeceeeeees 9 9 Environmental protection Disposal 10 10 General information cececeeeceeeeees 11 Buderus 2 Logano plus SB625 6 720 806 364 2012 07 1 General safety instructions and explanation of symbols 1 1 Key to symbols Warnings Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken Warnings in this document are identified by a warning N triangle printed against a grey background The following keywords are defined and can be used in this document NOTICE indicates a situation that could result in damage to property or equipment CAUTION indicates a situation that could result in minor to medium injury WARNING indicates a situation that could result in severe injury or death DANGER indicates a situation that will result in severe injury or death Important information This symbol indicates important information where there is no risk to people or property Additional symbols Symbol Meaning gt Action step gt Cross reference to another part of this document List list entry Table 1 General safety instructio
3. of the heating system In each room except the lead room the temperature can be regulated individually by means of thermostatic valves If a lower temperature is required in the lead room than in the other rooms leave the room temperature controller set as is and reduce the temperature at the radiator valve Thermostats Fully open the thermostatic radiator valves in order to achieve the required room temperature Change the required room temperature at the temperature controller only if the temperature is not achieved after a prolonged period Venting Never leave windows slightly open for ventilation purposes Otherwise heat will be constantly discharged from the room without significantly improving the room s air It is better to fully open windows briefly Close thermostatic radiator valves whilst airing rooms Economy mode night setback Substantial amounts of fuel can be saved by reducing the room temperature during day or night Reducing the temperature by 1 K can save up to 5 energy It is not recommended to let the daytime temperature of heated rooms drop below 15 C otherwise the cooled down walls would continue to cool down the room The room temperature is increased leading to a higher energy consumption than if the supply of heat remains constant In a well insulated building set the temperature for economy mode to a low level Even if the set economy temperature is never reached energy will be saved as the h
4. than the specific thermal capacity of water To enable the transfer of the required heat output increase the required flow rate accordingly This should be taken into account when sizing the system components e g pumps and the pipework As the heat transfer medium has a higher viscosity and density than water take the higher pressure drop through the pipework and other system components into account Check the resistance of all plastic or non metallic components in the system separately 6 Logano plus SB625 6 720 806 364 2012 07 Commissioning Es 4 Commissioning gt Ask your contractor to provide information about how the boiler works and is operated gt Never undertake any modifications or maintenance unless you are an approved heating contractor 4 1 Preparing the heating system for operation For you to be able to commission the heating system observe the following 5 De commissioning Open the automatic air vent valve only briefly for venting the air out of the boiler NOTICE System damage due to frost When there is frost the heating system can freeze up if it is not operational e g because of a fault or shutdown gt When there is a risk of frost protect your heating system against freezing up gt If your heating system has been shut down for several days due to a fault shutdown and there is a risk of frost drain the heating water at the drain amp fill valve Also leave the a
5. vessel for functionality gt Observe the requirements regarding water quality see operator s log gt If water loss occurs frequently locate the cause and rectify the problem without delay temperature must not exceed 40 C gt During operation only fill the heating system via the filling valve in the heating system pipework return NOTICE System damage due to temperature stresses A gt Only fill the heating system when cold the flow For sealed unvented systems the pressure gauge needle 3 must be within the green band 2 The red needle 1 of the pressure gauge must be set to the pressure required for the heating system gt Checking the heating system water pressure gt Topup the heating water if the pressure gauge needle 3 drops below the green band 2 gt Top up with water via the filling facility gt Vent the heating system gt Check the water pressure once more 6 720 648 053 30 1T Fig 3 Manometer for sealed unvented heating systems 1 Red needle 2 Green marking 3 Manometer needle 7 3 3 Installations with automatic pressurisation systems For installations in which an automatic pressurisation system is integrated observe the manufacturer s instructions The water quality requirements also apply here see operator s log Energy saving tips E 8 Energy saving tips Economy mode The appliance has been designed so that the gas consump
6. Floor standing condensing boiler Haat E Operating instructions for users Logano plus SB625 Burner shroud not available in UK and Ireland 6 720 806 364 2012 07 GB Read carefully before use B u d erus Introduction Introduction Table of contents Dear Customer Heat is our element and has been now for more than 275 years 1 General safety instructions and explanation of symbols 3 Right from the start we invest all our energies and passion into 11 Key to symbols 3 developing individual solutions for you so you feel comfortable in 12 Safety remilatione S 3 vourhom 2 Safety regulations 0 cece cece eee eee eee Whether heat domestic hot water or ventilation a product from Buderus will always provide you with highly efficient heating technology 2 Aboutthe appliance ccccceeeeeee eee eeeees 4 of proven quality that will reliably keep your home cosy for many years to 2 1 Determineduse 0 cece cece eee eens 4 come 2 2 EU Declaration of Conformity 0 4 We manufacture in accordance with the state of the art and ensure that 2 3 Operating conditions 0 ce cece eee ee 4 our products are efficiently matched to each other In this endeavour 24 Suitablefuels 2 cc ccccccccccccccccecccececes 5 efficiency and environmental compatibility are our priorities 25 Dafa aie aa ca Ei 5 Thank you for choosing a Buderus product a c
7. anufacturer s warranty Explosive and highly flammable material gt Never use or store highly flammable materials paper thinners paints etc near the boiler Combustion room air gt Keep the combustion ambient air free of corrosive substances e g halogenated hydrocarbons that contain chlorine or fluorine compounds This will help prevent corrosion gt Keep the combustion air supply free of dust Disposal gt Dispose of packaging in an environmentally responsible manner Buderus 2 About the appliance 2 1 Determined use The Logano plus SB625 condensing boiler has been designed for hot water heating systems in e g apartment buildings or industrial units The boiler is only approved for open flue operation Any pressure jet gas burner type tested to EN 676 can be used if its operating range matches the boiler specifications Only burners that have been tested and approved for electromagnetic compatibility EMC may be used 2 2 EU Declaration of Conformity The design and operation of this product conform to the applicable European directives and supplementary national requirements Conformity has been demonstrated You can ask for a copy of the declaration of conformity for this product For this see the contact address on the back cover of these instructions 2 3 Operating conditions Observe all standards and directives applicable to the installation and operation of this heating system in your
8. co uk In the UK and IE Buderus is a brand name of Bosch Thermotechnology Ltd Buderus
9. country Observe the information on the data plate These are definitive and must be observed Set the burner to the rated heat input QN specified on the data plate as a maximum Conditions of use Unit Value Maximum permissible temperature C 110 high limit safety cut out Maximum operating pressure bar Dependent on boiler size Maximum number of burner starts per annum 15 000 Table 2 Conditions of use Operating conditions Boiler water flow rate Logano plus SB625 Logano plus SB625 None None in conjunction witha in conjunction with Logamatic control a Logamatic control Operating Interruption unit for modulating unit 4212 for constant complete boiler shut down Peration boiler water Heating system control with temperatures or when mixing valve supplemented by a Min boiler water temperature third party control unit Minimum return temperature Miscellaneous 1 2 T Table 3 Operating conditions 1 Maximum 15 000 burner starts per year In order not to exceed the number of burner starts observe the information on setting the control unit and burner in the technical guide or installation instructions If this value is exceeded however please contact the manufacturer s service department 2 The number of burner starts per year is affected by the boiler system s operating settings parameters in the boiler controller and combustion
10. ddition burner faults are signalled by an indicator on the burner gt Press burner reset button see burner operating instructions If the burner still fails to start after three attempts contact a contractor Buderus 7 Inspection and maintenance 7 1 General notes NOTICE System damage due to inadequate cleaning A and maintenance gt Carry out cleaning and maintenance at least once a year In the course of this work check the entire heating system including the neutralising system for correct function gt Immediately remedy all faults to prevent system damage Annual inspection and service are part of the warranty terms Spare parts can be ordered from the manufacturer s spare parts catalogue i Use only original spare parts from the manufacturer We recommend you enter into an annual inspection and responsive maintenance contract with your approved contractor 7 2 Why is regular maintenance important Have your heating system regularly serviced to maintain a high level of efficiency and to operate the system economically low fuel consumption toachieve a high level of operational reliability e to maintain the cleanest possible combustion 7 3 Checking and correcting the water pressure The heating system must contain sufficient water to ensure its correct function gt If the water pressure in the heating system is too low top up with water gt Check the water
11. eating system remains switched off The start of the economy mode can be set to earlier if necessary Buderus Logano plus SB625 6 720 806 364 2012 07 9 Le Environmental protection Disposal DHW Always set the hot water temperature to as low as possible A lower setting on the thermostat means a higher rate of energy savings Furthermore higher hot water temperatures result in increased limescale deposits and thereby impair the function of the appliance e g longer heating up times or lower output DHW circulation pump If necessary set an existing circulation pump for hot water to your individual requirements using a timer e g mornings midday and evenings Now you know how to heat economically with the heating system Contact your installer should you have further questions alternatively contact us Buderus 9 Environmental protection Disposal Environmental protection is a key commitment of the Bosch Group Quality of products efficiency and environmental protection are equally important objectives for us All legislation pertaining to the environment is strictly observed To protect the environmentwe use the best possible technology and materials subject to economic considerations Packaging Where packaging is concerned we participate in country specific recycling processes that ensure optimum recycling All of our packaging materials are environmentally compatible and can be recycled Obso
12. g building work must be cleaned before commissioning 3 2 Heating water quality The quality of the fill and top up water is an essential factor for increased efficiency functional reliability long service life and maintaining the constant operational condition of aheating system If the system is filled with water that has a high calcium hardness this will be deposited on the heat exchanger surfaces and will block the transfer of heat to the heating water As a result the wall temperatures of the stainless steel heat exchanger surfaces will rise and the thermal stresses loads on the boiler body will increase This is why the quality of the fill or top up water must meet the conditions stipulated in the operator s log provided and be recorded in this log The conditions for boilers gt 600 kW require general water treatment independent of the water hardness and the volume of fill and top up water 3 3 Using antifreeze Chemical additives that are not certified as harmless by the manufacturer must not be used Antifreeze based on glycol has been used in heating systems for many years for example Antifrogen N manufactured by Clariant The use of other types of antifreeze should not be a cause for concern if the product is comparable with Antifrogen N Observe the antifreeze manufacturer s instructions Follow the manufacturer s details regarding mixing ratios The specific thermal capacity of Antifrogen N antifreeze is lower
13. hoice that will give you not 2 6 Productdescription ece cece eens 5 only efficient energy utilisation but also high levels of comfort and convenience To ensure that you retain this level of excellence please read the operating instructions carefully If contrary to expectations 3 Information on installation and operation 6 problems arise please contact your installer who will be happy to 3 1 Combustion air quality 0 2 00000 6 assist you 3 2 Heating water quality 00 c cece eee 6 Should your installer not be available then contact our customer service 3 3 Usingantifreeze nunnana gadeew ee dibens 6 that is available to you around the clock We hope you will enjoy your new Buderus product _ Your Bud T 4 Commissioning 2 v4 cc ssvecsc cei eeve sew oesees seve eee 7 eee 4 1 Preparing the heating system for operation T 4 2 Commissioning the control unitand burner 7 5 De commissioning ccceccececsccecccsecees 7 5 1 Shutting down the heating system 0 7 5 2 Shutting down the heating system in an emergency 7 6 Remedyingaburner fault cceeeceeeeees 8 7 Inspection and maintenance 0 eeceeeeees 8 7 1 General notes cece erann 8 7 2 Why is regular maintenance important 8 7 3 Checking and correcting the water pressuren 8 7 3 1 When should you check the water pressure
14. ir vent valve at the highest point in the system open gt Check that the required operating pressure has been achieved gt chapter 7 3 gt Check the flange connections and other connections for tightness gt Fill the condensate siphon gt Open the fuel supply to the main fuel isolating valve gt Switch on the heating system 4 2 Commissioning the control unit and burner By commissioning the control unit you automatically start operating the burner as well The burner can then be started by the control unit For further information see the installation instructions of the relevant control unit or burner Always ensure the burner combustion has been set up correctly before turning on the boiler controller permanently gt Use the control unit to commission the boiler NOTICE System damage due to frost The heating system can freeze up as a result of a power failure or if the power has been switched off gt Check the Control unit settings to ensure the system remains operational especially when there is a risk of frost 5 1 Shutting down the heating system Shut down your heating system via the control unit Switching off the control unit also switches off the burner gt Set the On Off switch of the control unit to 0 Off gt Isolate the fuel supply to the burner 5 2 Shutting down the heating system in an emergency Only in emergencies switch OFF the heating system via i the boi
15. ler room MCB fuse or the heating system emergency stop switch gt In dangerous situations immediately close the main fuel isolation valve and the power supply of the heating system via the boiler room main MCB fuse or the heating system emergency stop switch gt Isolate the fuel supply to the burner gt Never put your life at risk Your own safety is paramount Buderus Logano plus SB625 6 720 806 364 2012 07 7 Le Remedying a burner fault 6 Remedying a burner fault NOTICE System damage due to frost When there is frost the heating system can freeze up if it is not operational e g because of a fault or shutdown gt When there is a risk of frost protect your heating system against freezing up gt If your heating system has been shut down for several days due to a fault shutdown and there is a risk of frost drain the heating water at the drain amp fill valve Also leave the air vent valve at the highest point in the system open NOTICE System damage from pressing the reset button too frequently This can damage the burner ignition transformer gt Press the reset button no more than three times in sequence A burner locking out is a serious fault and should be investigated by an approved heating engineer The display shows heating system faults Further information on the fault displays can be found in the operating instructions of the relevant control unit In a
16. lete equipment Old appliances contain materials that should be recycled The relevant assemblies are easy to separate and all plastics are identified In this manner the individual components are easily sorted and added into the recycling and disposal systems 10 Logano plus SB625 6 720 806 364 2012 07 10 General information Cleaning the boiler jacket Wipe down the boiler jacket with a damp cloth Never use aggressive or corrosive cleaning agents Appliance details When requesting a customer service visit it is useful to provide detailed information about your appliance You will find these details on the data plate or the additional type plate Gas boiler e g Logano SB625 Correct fuel This heating system requires the correct fuel to ensure correct operation During commissioning your heating contractor will enter the correct fuel type for your heating system in the table below NOTICE Risk of system damage through use of incorrect fuel gt Only use the fuel intended for your heating system We recommend you seek the advice of your heating contractor if you intend to change the fuel for your heating system Use only the following fuel Stamp Signature Date Table 4 General information 10 Buderus Logano plus SB625 6 720 806 364 2012 07 11 Buderus Cotswold Way Warndon Worcester WR4 9SW All Enquiries 0844 892 3004 www buderus
17. ndary heating surface condensing plus heating surface 2nd pass 3 Water guide element 4 Lower condensation secondary heating surface condensing plus heating surface 3rd pass Buderus Logano plus SB625 6 720 806 364 2012 07 5 Se Information on installation and operation Qom J i O C WT Yr 351 01 1ITL oI Fig 2 Boiler overview 1 Control unit 3 Boiler shell with insulation and boiler casing Burner shroud 2 not available in UK and Ireland Buderus 3 Information on installation and operation Observe all standards and guidelines applicable to the installation and operation of this system in your country The details on the data plate are definitive and must be observed 3 1 Combustion air quality gt Keep the supply of combustion air free of corrosive substances e g halogenated hydrocarbons that contain chlorine or fluorine compounds This will help prevent corrosion gt Never use or store chlorinated cleaning agents or halogenated hydrocarbons as contained in spray cans solvents or cleaning agents paints and adhesives for example in the boiler room gt Keep the combustion air supply free of dust gt If building work is taking place in the installation room and creating a lot of dust shut the boiler down A burner contaminated durin
18. ns and explanation of symbols es 1 2 Safety regulations Danger through failure to consider your own safety in an emergency such as a fire gt Never put your life at risk Your own safety is paramount Installation and conversion Insufficient ventilation can lead to dangerous flue gas leaks gt Only have the boiler installed or modified by an approved heating contractor gt Never change any parts in contact with flue gas gt With open flue appliances Never cover or reduce the size of air vents in doors windows or walls If draught proof windows are fitted ensure there is an adequate ventilation gt Ensure that the boiler installation room remains frost free gt The heating system must be installed and operated in accordance with the applicable codes of practice as well as national regional and local legislation Risk of damage due to operator error Operator errors can result in injury and damage to property gt Ensure that children never operate this appliance unsupervised or play with it gt Ensure that only personnel who can operate this appliance correctly have access to it If you smell gas gt Close the gas isolation valve gt Open the windows gt Never operate electrical switches including telephones plugs or doorbells gt Extinguish all exposed flames gt No open fire gt Never smoke gt Never use lighters gt Warn all occupants of the building but do not ring doorbells
19. pressure monthly 7 3 1 When should you check the water pressure in the heating system The fill and top up water quality must comply with the i specifications in the operator s log supplied Air pockets may form in the heating system through the fill or top up water releasing gases i gt Vent the heating system e g bleeding the radiators gt If required top up with water Recently added fill or top up water loses much of its volume in the first few days because it releases gases With new systems you should therefore initially check the heating water pressure on a daily basis and then at gradually longer intervals e Once the heating system is hardly losing any volume check the heating water pressure monthly 8 Logano plus SB625 6 720 806 364 2012 07 A distinction is generally made between open vented and sealed unvented systems In practice open vented systems are rarely installed nowadays We will therefore be using a sealed unvented heating system to demonstrate how you can check the water pressure All settings will have already been made by the contractor when the system was first commissioned 7 3 2 Sealed unvented systems NOTICE System damage due to frequent topping up Subject to the water quality your heating system can be damaged through corrosion or scaling gt Ensure that the heating system is vented correctly gt Check the heating system for leaks and the expansion
20. put and approval data About the appliance ey 2 6 Product description With the Logano plus SB625 floor standing condensing boilers all parts that come into contact with products of combustion or condensate are made from high grade stainless steel This makes operation possible without minimum flow and return temperature minimum flow rate or minimum burner low load It is also referred to in this manual as the boiler or the heat appliance The SB625 has two separate thermohydraulic return connections for the high and low temperature heating circuits The SB625 must be equipped with a burner that is suitable for the boiler The boiler function is based on the 3 pass principle gt Fig 1 The main components of the boiler are gt Fig 2 page 6 Boiler body 3 in conjunction with a burner 2 The boiler block transfers the heat produced by the burner to the heating water Thermally insulating casing 3 The boiler shell and thermal insulation reduce energy losses Control unit 1 The control unit monitors and controls all electrical boiler components 6 720 642 881 05 1il Fig 1 Function diagram of the hot gas path in the floor standing condensing boiler Logano plus SB625 AA Flue gas outlet RK1 Return connection for low temperature heating circuits RK2 Return connection for high temperature heating circuits VK Flow connection 1 Combustion chamber 1st pass 2 Upper condensation seco
21. setting and system sizing to correspond with the heat demand of the consumer To avoid exceeding the number of annual burner starts as a result of incorrect operating settings the manufacturer offers a complete commissioning and maintenance inspections for boilers burners and boiler controllers Logamatic control units with function modules 4 Logano plus SB625 6 720 806 364 2012 07 The number of burner starts can be checked in the MEC i on the third party control unit or alternatively on the burner control unit 2 4 Suitable fuels The boiler must only be operated with the specified fuels Only burners that are suitable for the specified fuels may be used Your heating contractor has entered the required type of fuel in table 4 chapter 10 page 11 Gas burner il The combustion of biogas is not permitted Permissible fuels e Natural gas from the public gas supply in accordance with national regulations with a total sulphur content lt 50 mg m LPG in accordance with national regulations with a content of elementary sulphur lt 1 5 ppm and volatile sulphur lt 50 ppm 2 5 Dataplate If you contact the manufacturer with any questions about this product always provide the details on the data plate These details enable us to assist you quickly and effectively The information on the type plate is binding and must be observed The data plate includes details of the serial number out
22. tion and environmental impact are as low as possible yet comfort is at its optimum level Inspection Maintenance So that gas consumption and environmental impact can be kept as low as possible for as long as possible we recommend that you take out a servicing and maintenance contract with an authorised contractor covering an annual inspection and demand dependent maintenance of the boiler Heating controls Local legislation may specify the installation of aheating control unit with room temperature controller or a weather compensated controller and thermostatic valves For further information see the relevant installation and operating instructions of the controller and refer to the current building standards Heating systems with weather compensated control unit With this type of control the outside temperature is captured and the flow temperature is adjusted in accordance with the heating curve set at the controller The lower the outside temperature the higher the flow temperature Set the heating curve as low as possible Turn the appliance temperature controller to the maximum design temperature of the heating system Heating systems with room temperature dependent control The room where the room temperature controller is installed lead room determines the temperature in other rooms Thermostatic valves should not be installed in the lead room Set the appliance temperature controller to the maximum design temperature
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