Operating instructions Logano plus SB745
Contents
1. ccseceesenseseeee eee Checking and correcting the water pressure Commissioning Commissioning the burner uu ccs csneseeseeneseseeeieens Commissioning the Control UMit cesses Preparing the heating system for operation sss Commissioning the burner ou cscs cence Commissioning the Control UMit scence COP eC USE iiscccsaicsssissssssesnissaneeninencsatestaarsinsnntpecndesrentstrensapastiacn D Date plate ceri erorii iiras aaia och daai Disposal irsin aa E Energy saving infOrMatiOn ccsc sess cence Environmental protection ccccseseeseeseessesesessessenneens ISPS CT OM PREE EEE Inspection and maintenance Checking and correcting the water pressure General information c scssesesesesseeeesesteseeseeteseensseeneeseaes K Key to SYMDOIS irises ntact arian Maintenance uu ccccscccsccscsssssessesssseesssseuseuseusenseusessensesseusenseseess 0 Old appliance ccansennsnicianiann a Overview of Logano plus 8B745 uu cece P Packager Gunctncut stent eactneatiee Preparing the heating system for operation sssr Product descriptlon ivaccincerccsccesdan denecetin geste itiacccn Index ES R REGYCIING stevessensisavisnasctvesnenestaasnvananvanissanvenansan seas aventeearensbess 13 S Safety INStrUCHONS sssssessessersesessrneeesvssnerersunnuneeosnunereeosnnnereresns 5 Shutdown Shutting down the heating system in emergencies 9 Shutting DOWN secsssssccacsseassssetinestvessnsesis2. Your Buderus Team Buderus Logano plus SB745 Subject to technical modifications Contents 1 Key to symbols and safety instructions 4 8 Energy saving information 12 1 1 Key to symbols 0 0 c cece eee eee 4 1 2 Safety instructions 000 5 9 Environmental protection disposal 13 2 Aboutthe boiler ccce cece 21 A T E 6 10 General cece eee eee eee 14 2 2 CE Declaration of Conformity 6 2 3 Suitable fuels eee seer eee ees 6 INdOX sisive sac avea cede sueesen eae ess vies 15 2 4 Data plate secs exc tiecteate aie neen 6 2 5 Product description 0005 6 3 Information on installation and operation 8 3 1 Combustion air quality 8 3 2 Heating water quality 8 4 Commissioning 2 2 0 eeeeeeees 8 4 1 Preparing the heating system for OPErAalION sacecwedeeneceene en aike 8 4 2 Commissioning the control unit and burner 0 00 eee eee ees 8 5 Shutting down cc eee eee eee 9 5 1 Shutting down the heating system 9 5 2 Shutting down the heating system in an emergency cece eee eee 9 6 Correcting a burner fault 0 5 9 7 Inspection and maintenance 10 7 1 General notes 0 000ee ee eee 10 7 2 Why is regular maintenance important 10 7 3 Checking and correcting the water pressure ww eee 10 7 3 1 When
3. gt 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 supply of ventilation and combustion air gt Ensure that the boiler installation room remains free from the risk of frost gt The heating system must be installed and operated in accordance with the applicable codes of practice as well as national regional and local code Key to symbols and safety instructions Ea Thermal disinfection gt Risk of scalding Monitor any operation with temperatures in excess of 60 C Inspection and maintenance gt Recommendation for customers Arrange a maintenance and inspection contract with an authorised 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 correct all faults to prevent system damage gt Use only original genuine spare parts from the manufacturer Losses caused by the use of spare parts and accessories not supplied by the manufacturer are excluded from the manufacturer s warranty Explosive and highly flammable material gt Never use or store highly flammable materials paper thinners paints etc near the boiler Combustion ambient air gt Keep the combustion ambient air free of corrosive substances e g halogenated hydrocarbons that contain chlorine or fluorine compounds This will help p
4. Top up with water via the filling valve in the heating system pipework gt Vent the heating system gt Check the water pressure once more Inspection and maintenance 6 720 648 053 30 1T Fig 2 Pressure gauge for sealed unvented heating systems 1 Red needle 2 Green marking 3 Pressure gauge needle 7 3 3 Installations with automatic pressurisation units For installations with an automatic pressurisation unit observe the manufacturer s instructions The water quality requirements also apply here gt chapter 7 3 1 page 10 Buderus Logano plus SB745 Subject to technical modifications 11 Le Energy saving information 8 Energy saving information Heating economically The appliance has been designed so that the gas consumption 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 an inspection and maintenance contract with an approved contractor covering an annual inspection and service subject to demand Heating controls Install the heating 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 Heating systems with weather compensated
5. control unit With this type of control the outside temperature is captured and the heating 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 reference room determines the temperature in other rooms Thermostatic valves should not be installed in the reference room Set the appliance temperature controller to the maximum design temperature of the heating system In each room except the reference 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 reference the room temperature controller set as is and reduce the temperature at the radiator valve Thermostatic valves 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 Buderus Venting Never leave windows slightly open for ventilation purposes Otherwise heat will be constantly discharged from the room without significantly improving th
6. should you check the water pressure in the heating system 10 7 3 2 Sealed unvented systems 11 7 3 3 Installations with automatic pressurisation units 005 11 Buderus Logano plus SB745 Subject to technical modifications 3 E Key to symbols and safety instructions 1 Key to symbols and safety instructions 1 1 Key to symbols Warnings Warnings in this document are framed and N identified by a warning triangle which is printed on a grey background Electrical hazards are identified by a lightning symbol surrounded by a warning triangle Keywords indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions e NOTICE indicates that material damage may occur e CAUTION indicates that minor to medium injury may occur e WARNING indicates that serious injury may occur e DANGER indicates possible risk to life Important information Important information in cases where there is no risk of personal injury or material losses is identified by the symbol shown on the left It is bordered by horizontal lines above and below the text Additional symbols Symbol Meaning gt a step in an action sequence gt a reference to a related part in the document or to other related documents a list entry a list entry second level Tab 1 Buderus Logano plus SB745
7. 745 Subject to technical modifications The main SB745 components are gt fig 1 e Boiler body 1 in conjunction with a burner The boiler block transfers the heat generated by the burner to the heating water About the boiler 2 Thermally insulating casing The boiler jacket and thermal insulation reduce heat losses Control unit accessory 8 The control unit monitors and controls all electrical boiler components WANA 6 720 648 053 13 2T Fig 1 Boiler overview 1 Boiler body 2 Combustion chamber door 3 Safety lug to secure the load during transportation not for lifting 4 Flue gas collector 5 Condensate drain siphon 6 Drain 7 Base frame rail 8 Control unit accessory 9 Cable conduit 10 Flue gas connection 11 Inspection opening reversing chamber 12 Return 1 RK1 low temperature return main return 13 Return 2 RK2 high temperature return 14 15 16 17 18 Inspection opening on the water side both sides Flow safety connection Boiler flow Valve manifold accessory Lifting eyes Buderus Logano plus SB745 Subject to technical modifications EF Information on installation and operation 3 Information on installation and operation For the installation and operation of the heating system observe all country specific standards and guidelines The information on the data plate is binding and must be observed 3 1 Comb
8. Operating instructions Floor standing condensing boiler 6 720 648 053 00 2T Logano plus SB745 For users Read carefully before use Output range 800 1200 kW GB 6 720 800 395 2012 03 Buderus a Introduction Introduction Dear Customer Heat is our element and has been now for more than 275 years Right from the start we invest all our energies and passion into developing individual solutions for you so you feel comfortable in your home Whether heat domestic hot water or ventilation a product from Buderus will always provide you with highly efficient heating technology of proven quality that will reliably keep your home cosy for many years to come We manufacture in accordance with the state of the art and ensure that our products are efficiently matched to each other In this endeavour efficiency and environmental compatibility are our priorities Thank you for choosing a Buderus product a choice that will give you not 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 lf contrary to expectations problems arise please contact your installer who will be happy to assist you Should your installer not be available then contact our customer service that is available to you around the clock We hope you will enjoy your new Buderus product
9. Subject to technical modifications 1 2 Safety instructions 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 If you smell gas gt close the gas tap gt Open the windows gt Never operate electrical switches including telephones plugs or door bells Extinguish all naked flames No open fire Never smoke Never use lighters vv v Vv y Warn all occupants of the building but do not ring doorbells gt Leave the building and telephone your gas supply utility and authorised contractor from an outside phone If you smell exhaust gas gt Switch off the appliance gt Open windows and doors gt Notify an authorised contractor Electric shock hazard gt Before carrying out any work on the heating system disconnect it from the power supply across all poles For example activate the emergency stop switch outside the boiler room It is not enough to switch off the control unit gt Safeguard the heating system against unintentional reconnection gt Adhere to country specific rules and regulations when making the electrical connection commissioning servicing and carrying out maintenance Siting conversion An insufficient supply of air can result in dangerous escape of flue gas gt Only have the boiler installed or modified by a competent person gt Never change any parts in contact with flue gas
10. There you will find information such as the serial number output and approval details 2 5 Product description The Logano plus SB745 is a floor standing condensing boiler with a slim compact design and a small footprint thanks to the combustion chamber located at the top and the condensation heating surface located at the bottom It is referred to in this manual as the SB745 or the boiler The SB745 has two thermo hydraulically separated return connections for the high and low temperature circuits For the type tested boiler sizes with internal condensing heat exchanger and CE designation the components that come into contact with hot gas and condensate are made of stainless steel Equip the SB745 with a suitable burner Optional accessories can be found in the general catalogue Permissible fuels e Natural gas from the public gas supply in accordance with national regulations with a total sulphur content lt 50 mg m8 e LPG in accordance with national regulations with a content of elementary sulphur lt 1 5 ppm and volatile sulphur lt 50 ppm The boiler must only be operated with the specified fuels Only burners that are suitable for the specified fuels may be used Observe the manufacturer s burner selection list and the burner manufacturer s instructions Buderus NOTICE System damage through incorrect A burner gt Only use burners which meet the technical boiler requirements Logano plus SB
11. e air quality in the room It is better to fully open windows briefly Close thermostatic radiator valves whilst airing rooms Now you know how to heat economically with the heating system Contact your installer should you have further questions alternatively write to us 12 Logano plus SB745 Subject to technical modifications 9 Environmental protection disposal Environmental protection is key commitment for 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 environment we use the best possible technology and materials subject to economics Packaging We are dedicated to adhering to country specific disposal standards for packaging in order to ensure optimum recycling All packaging materials are environmentally compatible and can be recycled Old appliance Old appliances contain materials that should be recycled The relevant assemblies are easy to separate and all plastics are identified This allows the various assemblies to be appropriately sorted for recycling or disposal Environmental protection disposal 2 Buderus Logano plus SB745 Subject to technical modifications 13 10 General 10 General Cleaning the boiler jacket Wipe down the boiler jacket with a damp cloth Never use aggressive or corrosive cleaning agents Applianc
12. e 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 appliance type label gt installation and maintenance instructions Gas boiler e g Logano SB615 Serial number cr Date commissioned ssssssesesssisisinsuusinsurununununinnunununnnnnnununnnnnnnnen Buderus Correct fuel This heating system requires the correct fuel to ensure perfect 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 A 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 Tab 2 14 Logano plus SB745 Subject to technical modifications Index A About the appliance csscsssssssssesssssessssssessssessssseseieesssenes Appliance description s sessssrsssrrsrrerrrsrrnsnrrssresrrenrrennresnres CE Declaration of Conformity sessssssssessrrrrssersrrrrerernrne D a o E E nding ddniaues Overview of possible fuels ssssssssssisssrressrrirsrrirsrisrn Appliance description ssesssrsssrissrrsrresrrernrrnrrsnrrsrreenrernrnrnnes Cc CE Declaration of Conformity
13. n should you check the water pressure in the heating system Use only original genuine spare parts from i the manufacturer Spare parts can be ordered from the manufacturer s spare parts catalogue Enter into an annual inspection and responsive maintenance and inspection contract with your contractor 7 2 Why is regular maintenance important Have your heating system regularly serviced e to maintain a high level of efficiency and to operate the system economically low fuel consumption e to achieve a high level of operational reliability e to maintain the cleanest possible combustion Annual inspection and service are part of the warranty terms Buderus The fill and top up water quality must comply with the specification in the boiler log supplied Air pockets may form in the heating system through the fill or top up water releasing gases gt Vent the heating system e g by 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 A distinction is generally made between open vented and sealed unvented systems In practice open vented sys
14. revent corrosion gt Keep the combustion air supply free of dust Disposal gt Dispose of packaging in an environmentally responsible manner Buderus Logano plus SB745 Subject to technical modifications EA About the boiler 2 About the boiler 2 1 Correct use The Logano plus SB745 condensing boiler has been designed for hot water heating systems in e g multiple dwelling units or for industrial use Any gas burner to EN 676 and EN 267 can be used if its operating range matches the boiler specification Only burners that have been tested and approved for electromagnetic compatibility EMC may be used Logamatic 4000 control units are used with these boilers For further details on correct use gt chapter 2 3 chapter 2 5 and chapter 3 page 8 2 2 CE Declaration of Conformity The design and operation of this product conform to the applicable European directives and supplementary national requirements Conformity has been demonstrated The Declaration of Conformity can be viewed at www buderus de or alternatively can be requested from your local Buderus sales office 2 3 Suitable fuels i The combustion of biogas is not permitted 2 4 Data plate 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 specifically and quickly The data plate is fitted to the back of the boiler casing
15. sscvesarestsossntansaepantensearineen 9 Shutting down the heating System cise 9 Shutting down the heating SyStem sssssssrssrsrereessrrrereeree 9 shutting down the heating system in emergencies 9 WwW Water PreSSUre icccicectecscischstacteiectiedctestscocsechstesisadsrseevesetsereeens 10 Buderus Logano plus SB745 Subject to technical modifications 15 Buderus Cotswold Way Warndon Worcester WR4 9SW All Enquiries 0844 892 3004 www buderus co uk In the UK and IE Buderus is a brand name of Bosch Thermotechnology Ltd Buderus
16. t the drain amp fill valve Also leave the air vent valve at the highest point in the system open NOTICE Risk of system damage through frost When there is a frost the heating system can freeze up if it is not operational e g because of a fault shutdown gt lf 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 Risk of system damage through 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 NOTICE System damage due to the reset button being pressed too frequently This can damage the burner ignition transformer gt Press the reset button no more than three times in a row 5 1 Shutting down the heating system Shut down your heating system via the control unit Switching off the control unit automatically also switches off the burner gt Set the On Off switch of the control unit to O Off gt Isolate the fuel supply to the burner 5 2 Shutting down the heating system in an emergency system via the boiler room MCB fuse or the i Only in emergencies switch OFF the heating heating sys
17. tem emergency stop switch gt In dangerous situations immediately close the main fuel shut off 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 The display shows heating system faults Further information on the fault displays can be found in the service instructions of the relevant control unit In addition 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 Logano plus SB745 Subject to technical modifications Inspection and maintenance 7 Inspection and maintenance 7 1 General notes NOTICE System damage due to inadequate N cleaning and maintenance gt Carry out cleaning and maintenance procedures annually In the course of this work check the entire heating system including the neutralising system for correct function gt Immediately correct all faults to prevent system damage 7 3 Checking and correcting the water pressure The heating system must contain sufficient water to safeguard its correct function gt If the water pressure in the heating system is too low top up with water gt Check the water pressure monthly 7 3 1 Whe
18. tems 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 installation engineer when the system was first commissioned 10 Logano plus SB745 Subject to technical modifications 7 3 2 Sealed unvented systems NOTICE System damage through 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 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 NOTICE System damage through temperature stresses gt Only fill the heating system when cold the flow temperature must not exceed 40 C gt During operation only fill the heating system via the fill valve in the heating system pipework return 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 Check the heating system water pressure gt Ifthe pressure gauge needle 3 no longer lies between the two red indicators top up with water gt
19. the volume of fill and top up water Buderus 4 Commissioning gt Ask your contractor to provide information about how the boiler works and is operated gt Never undertake any modifications or maintenance 4 1 Preparing the heating system for operation For you to be able to commission the heating system observe the following Open the automatic air vent valve only briefly for ventilation gt Check that the required operating pressure has been built gt Check the flange connections and other connections for tightness gt Fill the condensate siphon 4 2 Commissioning the control unit and burner By commissioning the control unit you automatically commission 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 gt Use the control unit to commission the boiler Logano plus SB745 Subject to technical modifications 5 Shutting down Shutting down Le 6 Correcting a burner fault NOTICE Risk of system damage through frost When there is a frost the heating system can freeze up if it is not operational e g because of a fault 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 a
20. ustion 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 during building work must be cleaned before commissioning 3 2 Heating water quality The quality of the fill and top up water is essential for increased efficiency functional reliability long service life and for maintaining the constant operational condition of a heating 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 obstruct 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
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