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Operating instructions Logamatic EMS

1. more information refer to the relevant chapter Consult your heating contractor if you have further questions Buderus 12 Logamatic EMS RC25 programming unit Subject to technical modifications Principles of operation EM 4 4 Selecting a heating circuit What is a heating circuit A heating circuit describes the circuit taken by the heating water from the boiler to the radiators and back again Multiple heating circuits can be connected to one boiler for example one heating circuit for radiators and another heating circuit for underfloor heating The radiators are supplied with a higher flow temperature than the underfloor heating system The flow temperature is the temperature of the heating water generated by the boiler as it flows into the heating circuit The programming unit can be tied into the Energy Management System EMS by two different methods Asthe only programming unit in the system factory setting the programming unit is installed in the living space or on the boiler Example detached house with one heating circuit If DHW is to be controlled an RC35 programming unit will be needed to comply with part L Asaremote control for one heating circuit 1 The RC25 programming unit is operated in unison with a higher programming unit e g RC35 The RC35 programming unit is installed either in the living space or on the boiler and regulates one heating circuit e g for the main apartment The RC25 programming un
2. 5 Heating program selection Automatic mode ensures automatic changeover between day and night mode at defined times The factory settings means 21 C or 17 C are set for day or night mode Before you select a heating program consider the following At what time in the morning should your home be warm Is this time also subject to the day of the week Are there days when you don t want to heat during the day From what time in the evening do you no longer need to heat This may also depend on the day of the week If the RC25 programming unit is installed as a remote control unit in conjunction with an RC30 RC35 programming unit heating programs from the RC30 RC35 can be used by the RC25 programming unit so called Own programs gt Tab 5 page 24 The programming unit has eight different preset heating programs See the following Tab 5 page 24 for a summary of the times of these preset heating programs Please check which heating program best meets your requirements to optimise heating comfort and energy efficiency Primarily check the number and times of the switching points for day and night mode Program Pr1 family program is preset at the factory Operation Result 1 Open flap 2 Hold down The currently selected heating program is displayed H ug 3 Select the required heating program using rotary selector O gt Tab 5 page 24 4 Release proc The selec
3. L ILa A Soe Turn rotary selector C further Turn the rotary selector AUT clockwise to increase the room temperature and anti clockwise to lower it 2 When you have reached the required room temperature Zs rn release the rotary selector A Hl C o L Lic The modified room temperature temporary set room AUT 0 temperature vev is saved no longer flashes The permanent display appears again In manual mode the LED next to us is not lit up In this case the modified room temperature applies until you press G or Ending a temporary change in room temperature To return to automatic mode press G The automatic program uses the temperatures normally set for day and night mode To return to manual mode press or The temperatures normally set for day or night mode will be used programming unit RC25 programming unit as remote control then the set holiday temperature rather than the temporary set room temperature can be changed at the RC25 programming unit i If holiday mode is active for the relevant heating circuit in conjunction with the RC35 Buderus 18 Logamatic EMS RC25 programming unit Subject to technical modifications Function control 5 2 2 Setting the room temperature for the current operating mode The set room temperature applies to the currently enabled heating mode i e day or night mode You can recognise the currently enabled heating mode because the LED of the resp
4. changed The LED next t lights up inode e nex o ights up permanently When you return reduced gt Activate automatic mode again automatic mode is press G switched off The LED next to key illuminates if the DHW Hold down and simultaneously 30 C 60 C A o temperature is too turn rotary selector 60 80 C cold hot The value can be changed Tab 2 Getting started setting temperatures Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 9 Em Getting started Getting started additional functions What do I do Operation Further information to set the time Open flap gt page 22 Hold down and simultaneously turn rotary selector O The time can be set to select the heating Open flap gt page 23 program gt Hold down frod and simultaneously A turn rotary selector O The heating program can be selected Tab 3 Getting started additional functions Buderus 10 Logamatic EMS RC25 programming unit Subject to technical modifications Principles of operation EM 4 Principles of operation 4 1 Display The display shows set and actual values and temperatures e g the actual room temperature factory set to be the permanent display npans s LILTFLL I HEB s NETUS 8 6 720 642 679 06 1RS Fig 1 Display elements explained Day 1 Mo 2 Tu 7 Su Set or actual value temper
5. on boilers with UBA will not illuminate Buderus 2 Logamatic EMS RC25 programming unit Subject to technical modifications Contents E Contents 1 Symbols and safety precautions seueseeeeseses enn nn nnne 5 14 Key to symbols cec se mes daaarna aasa m Rs n nnn naan C ec aa gd 5 1 2 Safety InStFU6Ons entente dd eoo ees edad sea esie doi dean qucd Sod 6 2 Product information sseeeeeeeesee nnn 7 24 Productdescription s iau E acte o Ra til Peer Cir to EUER hop i Unna meo Rd cis 7 2 2 COTrOCt USE Ann 7 2 3 EU Declaration of Conformity 0 0 7 244 Cleaning s exrcation eodd Ge Ia ne une ra Me aad seca at aga unl 7 2 5 Disposal i opi UE arat cede tuus Mahe at ade awe mead Sl anode arene 7 3 Getting started ccc cece cect eee enhn hne 8 4 Principles of operation 0 0c cece cece eee n Rn nh nn 11 431 Display 2202 s cdemd addi eke nti ei Oe uet he abe E Dus cert ai deci fter Riera 11 4 2 Changing the room temperature directly 00 00 cece 12 4 3 Notes on range of functions 6 ee 12 4 4 Selecting a heating circuit 13 4 5 Shutting down switching off nnn 14 5 Function control 0c ceec cece e eee nnn hh 15 5 1 Selecting the operating mode 0 cee 15 5 2 Setting the room temperature 2 1 0 0 ee 17 5 2 1 Changing the room temperature temporarily 0 000 cece eee 18 5 2 2 Setting the room temperature for the current op
6. safety are all of equal importance to us and all environmental protection legislation and regulations are strictly observed We use the best possible technology and materials for protecting the environment taking account of economic considerations Packaging Where packaging is concerned we participate in country specific recycling processes that ensure optimum recycling All packaging materials are environmentally compatible and can be recycled Used appliances Used appliances contain materials that should be recycled The components are easy to separate and the plastics carry identification markings This allows the various assemblies to be appropriately sorted for recycling or disposal Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 27 EN Troubleshooting 8 Troubleshooting This chapter deals with frequently asked questions about your heating system This will in many cases enable you to eliminate suspected faults At the end of the chapter you will find a table listing faults and corresponding remedies 8 1 Frequently asked questions Why do I set a room temperature even though it is not recorded When you set the room temperature even if it is not recorded as with weather compensated control you are changing the heating curve This changes the room temperature because the temperature of the heating water changes and with it the temperature of the radiators Why does the room te
7. It must not be limited by closed thermostatic valves Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 25 EN Information on setting the programming unit 6 2 Tips for energy efficiency X You can save around 6 on your heating costs by reducing the daytime gle n room temperature by 1 C Only heat if you need warmth Use the switching programs for automatic night setback Air your home wisely leave the windows wide open for a few minutes rather than leaving them slightly open all the time Close the thermostatic radiator valves while airing rooms Make sure that your windows and doors form a proper seal Never position large objects such as a sofa immediately in front of radiators maintain a clearance of at least 50 cm Otherwise the heated air cannot circulate and heat the room adequately Youcan also increase the energy efficiency of your DHW heating compare the times when you want your rooms to be warm with the times when you need hot water It may be practical to use a separate switching program for DHW heating Arrange for your heating contractor to service your heating system annually Buderus 26 Logamatic EMS RC25 programming unit Subject to technical modifications Environment disposal er al 7 Environment disposal Environmental protection is a fundamental corporate strategy of the Bosch Group The quality of our products their economy and environmental
8. Operating instructions Beaten nag olus Q 4 e S o R o N o A ES o Logamatic EMS For users Read carefully before RC25 programming unit use 6 720 642 735 05 2010 GB Buderus E Overview of controls Overview of controls Key to diagram 1 Flap pull the recessed grip on the left to open 2 Rotary selector for changing values and temperatures or for navigating through the menus 3 Pin button Display 6 720 642 679 04 1RS 5 Keys for basic functions When the LED lights up AUT automatic the switching program is active automatic switchover between day and night room temperatures Day mode manual the heating system operates at the set day room temperature DHW heating is on factory setting Night mode manual the heating system operates at the set night room temperature Frost protection is active DHW heating is off factory setting e DHW the DHW temperature has fallen below its set value Pushing this key means DHW will be heated up again the LED flashes during heat up 6 Keys for Function additional functions PRos Prog program Selecting a heating program eg Time Set the time In automatic mode an additional LED lights up with the AUT LED to indicate the current operating status day mode or night mode Exception in the case of boilers with UBA only the AUT LED illuminates The DHW LED
9. and day are retained for several hours All other settings are retained permanently Buderus 14 Logamatic EMS RC25 programming unit Subject to technical modifications Function control 5 Function control This chapter describes how you can change the room and DHW temperatures You control these functions by pressing a key on the r h side or behind the programming unit flap or by turning the rotary selector 5 1 Selecting the operating mode You may operate the programming unit in two different ways n automatic mode n manual mode You can activate the operating mode directly by pressing the specified key Operating mode Key Explanation Automatic recommended setting The switching program is active The system will change over automatically between day mode and night mode at the set time switching point At night the heating system will operate at a reduced room temperature factory setting night shutdown is also possible DHW heating is on during the day and off at night factory setting The LED for the automatic key illuminates along with the LED for either day or night mode depending on which is currently active Tab 4 Explanation of the operating modes Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 15 5 Function control Operating mode Key Explanation Manual daytime operation Factory setting 21 C Co
10. ature Temperature display in C Outside temperature display Actual room temperature display Display a Room temperature can now be adjusted or b Room temperature has temporarily changed 7 Summer mode display 8 Operating status symbols oa hand The display shows four horizontal bars if you try to change a value which cannot be modified of if an adjustment is not possible Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 11 EM Principles of operation 4 2 Changing the room temperature directly If your entire home is too cold or too hot raise or reduce the room temperature using the rotary selector and leave the thermostatic radiator valves unchanged A n gt Turn the rotary selector to set the required room temperature Release the rotary selector The modified room temperature is saved temporary set room temperature vey is saved The standard display reappears i The temporary temperature setting is retained until you press one of the keys or or until the heating system changes its operating mode for example into night mode For further ways to change the room temperature see Chapter 5 2 page 17 4 3 Notes on range of functions These instructions describe all possible functions of the programming unit Some of these functions may not be available depending on which boiler and version of the burner control unit are used For
11. contractor about the possible cause The codes are issued in two parts The first indicates the service code display code e g A01 Turning the rotary selector clockwise displays the fault code e g 816 By means of the service code the display indicates whether a Fault Condition system fault or service message is currently active A 1 In case of a fault message turn rotary selector clockwise The fault code will be displayed 2 Check whether you can eliminate the fault yourself with a reset gt Chapter 8 3 or by means of the explanations in Tab 6 3 Otherwise notify your heating contractor immediately stating the code 4 In case of a service message check whether the message can be cleared with the aid of the explanations in Tab 6 5 Otherwise notify your heating contractor immediately stating the code Buderus 30 Logamatic EMS RC25 programming unit Subject to technical modifications Troubleshooting The following table explains the possible fault and service displays In addition the LEDs flash alternately transferred between EMS UBA and the RC35 no fault Code Display Cause Remedy Nothing appears on the Heating system has Switch on the heating display been switched off system The power supply to the Check that the heating system has programming unit is been interrupted correctly seated in its wall mounting base gt Check that the cables on the programm
12. e and control Buderus heating systems in domestic and commercial buildings The boiler must be equipped with EMS energy management system or UBA universal burner controller We recommend always operating the heating system with a programming unit otherwise the system only operates in emergency mode 2 3 EU Declaration of Conformity The design and operation of this product conforms to European Directives and the supplementary national requirements Its conformity is demonstrated by the CE designation You can call up the Declaration of Conformity for this product on the internet at www buderus de konfo or request a copy from your local Buderus sales office 2 4 Cleaning Clean the programming unit only with a damp cloth 2 5 Disposal Dispose of packaging in an environmentally responsible manner When replacing components dispose of the used ones in an environmentally responsible manner Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 7 NE cetting started 3 Getting started Setting room temperatures gt Chapter 5 2 page 17 Initial situation the flap is closed Factory What do I do Operation Input range setting if itis temporarily Turn the rotary selector to set too cold hot in the the required room temperature entire home on a Release the rotary selector particular day The modified room temperature is saved temporary set room temperature vay
13. e boiler still running The boiler may be running to heat up DHW Your heating system can be set to three possible control modes gt page 25 Room temperature control The boiler shuts down when the set room temperature has been reached Weather compensated control The heating system runs on the basis of the outside temperature Weather compensated control with room temperature hook up The heating system takes advantage of both the above control modes The boiler can still operate in the latter two cases even if the captured room temperature is higher than the set room temperature Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 29 EN Troubleshooting 8 2 Fault and service displays The programming unit makes a distinction between three types of messages Service message Fault message system fault incorrect settings on the programming unit or component faulty Service messages indicating that some maintenance work is required NOTICE System damage due to frost N The heating system can freeze up if it has been switched off through a fault shutdown Try and clear the fault gt Ifthat is not possible notify your heating contractor immediately The faults depend on the boiler used Information about the faults can be found in the boiler documentation Code column in Tab 6 The messages are identified by codes These inform your heating
14. ective symbol illuminates You are currently in automatic mode and would like to change the room temperature temperatures The LED next to key illuminates The permanent display will then appear again Operation Result 1 Hold down and simultaneously turn rotary selector O ric Turn rotary selector O further Turn the rotary selector L ILa clockwise to increase the room temperature and anti AUT 0 clockwise to lower it i 2 When you have reached the required room temperature pex release the rotary selector _ ul C 7 L Lic Automatic mode is now active with the modified room AUT 5 2 3 Setting the room temperature for an operating mode which is not the current mode You may also adjust the room temperature for an operating mode that is not currently enabled For example you are currently in automatic Day mode and would like to alter the set night temperature Operation Result A 1 Hold down and simultaneously turn rotary selector O TNNT PA ic Turn rotary selector C further Turn the rotary selector lI thilve clockwise to increase the room temperature and anti q clockwise to lower it 2 When you have reached the required room temperature Z 5 release the rotary selector P i C Automatic mode is now active with the modified room 5 dcm q temperatures The LED next to key illuminates The permanent display wi
15. erating mode 00005 19 5 2 3 Setting the room temperature for an operating mode which is not the current mode 19 5 3 Setting DHW functions 0 nnn 20 5 3 1 Checking or changing the DHW temperature 00 cece 20 5 3 2 Heating DHW only once oo enn 21 5 4 Setting the time and day ssssssssssee nnn 22 5 5 Heating program selection sssssssn HH 23 6 Information on setting the programming unit sseeeeeeeeennnnnee 25 64 Types ofcontrol ldem ehe Rhet e gor roni De RD CR TR RR na ix Gd 25 6 2 Tips for energy efficiency scene ket eee Deme eek ded te dar ee tc 26 Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 3 E Contents 7 Environment disposal 2 00020c cece eee eee eee nnns nn nnn 27 8 Troubleshooting 22 css iu lade naa Ra S Rx e ed ete eae eatin See 28 8 14 Frequently asked questions 0 cc cece ete 28 8 2 Fault and service displays 0c cece cece eee eee 30 8 8 Clearing faults reset 2 0 6 I nas 33 lpnIq PETITUM 34 Buderus 4 Logamatic EMS RC25 programming unit Subject to technical modifications Symbols and safety precautions Ea 1 Symbols and safety precautions 1 1 Key to symbols Warnings Warnings in this document are framed and identified by a warning triangle printed N against a grey background If there is a danger due to electricity the exclamation mark i
16. ing unit wall mounting base are connected After start up After start up data is gt Wait a few seconds When changing a setting This parameter cannot be modified or this setting is not permissible Tab 6 Fault and service displays Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 31 E Troubleshooting Code Display Cause Remedy XXX XXX Example The heating system or If the permanent display does the programming unit not automatically return LIT 4g bes MR UH A ca gt Notify your heating l ILI I contractor may be temporary The heating system The LEDs flash alternately automatically returns to The display does not flash standard mode In addition the display The heating system or Clear the fault flashes the programming unit gt Chapter 8 3 has developed a fault If a fault is shown as a flashing code clear it with a reset A01 816 PIE Communication to EMS Check that the LIIS is faulty possibly due to programming unit is Pit Ig a loose contact or correctly seated in its wall electromagnetic mounting base interference for gt Check that the cables on example the programming unit wall mounting base are connected A11 802 Time or date settings are Enter the time or date so LI d missing This may have that the switching program A11 1803 plete been caused by a and other funct
17. ions can lengthy power failure for work correctly example A18 3802 Eum Time or date settings are Enter the time or date so Li IL 1 missing This may have that the switching program Pl ILJ been caused by a and other functions can lengthy power failure for work correctly example Tab 6 Fault and service displays Buderus 32 Logamatic EMS RC25 programming unit Subject to technical modifications Troubleshooting Code Display Cause Remedy Hxx Example A service is required Make arrangements to have The heating system the system serviced by your LI 73 keeps operating as far heating contractor F1 TN as possible H7 The water pressure in This is the only service LI of the heating system has message H 7 that you can I l dropped to a low level deal with yourself This value is only displayed if your heating system is equipped with a digital pressure sensor Otherwise check the operating pressure from time to time at the pressure gauge gt Top up the heating water gt boiler operating instructions Tab 6 Fault and service displays 1 Function not possible on boilers with UBA 8 3 Clearing faults reset Some faults can be rectified by resetting the system This applies to locking faults for example Locking faults are those which cause the display on the boiler programming unit to flash gt Press rese
18. is saved The standard display reappears Press one of the keys or to cancel the temporary set room temperature and to enable the selected operating mode In automatic mode the modified room temperature remains active until the next changeover between night day mode if it is To change the day night time room As for day night 21 C permanently too temperature in automatic mode 17 C cold hot in the hold down key ut and entire home simultaneously turn rotary selector gt Changing the The value can be changed room temperature in automatic mode Tab 2 Getting started setting temperatures Buderus 8 Logamatic EMS RC25 programming unit Subject to technical modifications Getting started Factory What do do Operation Input range setting for one off heating Activate manual day mode hold 6 C 30 C 21 C outside the usual down key and simultaneously times outside the turn rotary selector O switching The value can now be changed program The LED adjacent to key illuminates gt Manual day MATS mode continuous To end the one off heating phase heating gt Activate automatic mode again automatic mode is press 47 switched off The LED next to key illuminates to save energy Activate manual night mode hold 5 C 29 C 17 C during long down key and simultaneously absences turn rotary selector C S Mandal fighi The value can be
19. it captures the room temperature in a separate living area and regulates this second heating circuit Basic settings for the heating system are made at the RC35 Consequently these settings become available for the heating circuit with the RC25 programming unit Examples underfloor heating on one floor radiators on another or a flat together with a separate living area or clinic 1 Not available on boilers with UBA Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 13 E E Fig 2 Options for a heating system with one or two heating circuits 6 720 642 679 05 1RS 1 One programming unit controls one heating circuit Must be used in conjunction with RC35 to comply with part L 2 Each heating circuit has its own programming unit remote control unit 4 5 Shutting down switching off The RC35 programming unit is powered via the heating system and remains permanently on The heating system is only switched off for maintenance work for example Tostartup and shut down the heating system set the ON OFF switch on the boiler programming unit to 1 ON or 0 OFF After shutting down or in the event of a power failure the time
20. ll then appear again Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 19 5 Function control 5 3 Setting DHW functions Risk of scalding from DHW temperatures over 60 C WARNING Risk of scalding N The factory setting for the DHW temperature is 60 C There is a risk of scalding at the hot water draw off points if the temperature is set higher than this and also following thermal disinfection gt If the temperature set is higher than 60 C or following thermal disinfection never open any hot water tap without mixing in cold water as well The programming unit also offers you the option of heating DHW in an energy conscious manner The setting is subject to how the programming unit was installed gt Chapter 6 1 page 25 Ifthe RC25 programming unit operates as the only programming unit in the system DHW heating commences automatically 30 minutes prior to the start of day mode of the heating program DHW is not produced during night mode In day mode the DHW circulation pump is started twice per hour for three minutes to safeguard the constant supply of taps with hot water The DHW temperature can be set to a maximum of 60 C factory setting For UK an RC35 must be used for DHW control to comply with part L fthe RC25 programming unit is installed as a remote control for one heating circuit then DHW heating and the operation of the DHW circulation pump will be set f
21. mperature measured with a separate thermometer not correlate with the set room temperature The room temperature is influenced by a number of different variables If the RC25 programming unit is installed on a cold wall it will be influenced by the cold temperature of the wall It will be influenced by the heat from a fireplace or chimney for example if it is installed in a warm part of the room Therefore a separate thermometer can indicate a different room temperature than that set at the RC25 programming unit To compare the actual room temperature with the values measured by another thermometer the following is important The separate thermometer and the room controller must be physically close to each other The separate thermometer must be accurate When comparing do not measure the room temperature when the heating system is heating up as the two devices may react at different speeds to the change in temperature If you have followed these instructions and you can still detect a discrepancy you can calibrate the room temperature display page 17 Why do the radiators get too hot when the outside temperature is relatively high If you have a heating system with one heating circuit and no mixing valve heating circuit 1 this is normal The pump only starts up when the boiler reaches a predefined flow temperature If the flow temperature is higher than required based on the outside temperature the radiators may get hotter fo
22. n program Only if the RC25 programming unit is set up as a remote control from RC30 RC35 Enables Own program 1 set up in the RC30 RC35 programming unit for the heating circuit of the RC25 programming unit Pr10 Own program Only if the RC25 programming unit is set up as a remote control in conjunction with the RC35 from RC35 Enables Own program 2 set up in the RC35 programming unit for the heating circuit of the RC25 programming unit Tab 5 Heating programs ON day mode OFF night mode 1 Function not available on boilers with UBA Buderus 24 Logamatic EMS RC25 programming unit Subject to technical modifications Information on setting the programming unit EN 6 Information on setting the programming unit 6 1 Types of control The heating system can be operated in three control modes Depending on your requirements your heating contractor will select and set up one of these options Room temperature control With this control mode the programming unit must be fitted in a room that is fairly typical for the home The programming unit records the room temperature in this reference room Control of the flow temperature is determined by the set room temperature and the actual room temperature Consequently external temperature influences in the reference room e g open windows sunlight or heat from a fireplace will affect your entire home Set the room temperature of your home or reference room at the p
23. n the warning triangle is N replaced by a lightning symbol 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 NOTE indicates that material losses may occur CAUTION indicates that minor to medium injury may occur WARNING indicates that severe injury may occur DANGER indicates a risk to life Important information Important information where there is no risk to people or property is indicated with the adjacent symbol It is bordered by lines above and below the text Additional symbols Symbol Explanation gt Action step gt Cross reference to other parts of this document or to other documents o List list entry List list entry level 2 Tab 1 Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 5 E Symbols and safety precautions 1 2 Safety instructions Installation and commissioning Observe these instructions to ensure satisfactory operation The appliance must only be installed and commissioned by an approved contractor Risk to life from electric shock Ensure that electrical connections are only made by authorised electrical contractors Observe the connection diagram Before installation isolate all poles of the power supply Secure against unintentional reconnection Never install this appliance in wet rooms Never connect this applia
24. nce to the 230 V mains Damage due to operator error Operator errors can lead to injuries and or material losses Ensure that children never operate this appliance unsupervised or play with it Ensure that only individuals who can operate this appliance correctly have access to it Warning frost The heating system can freeze up in cold weather if it is not in operation Leave the heating system permanently switched on Enable frost protection gt Incase of faults remedy any faults immediately Buderus 6 Logamatic EMS RC25 programming unit Subject to technical modifications Product information 2 Product information 2 1 Product description The programming unit makes it easy to operate your Buderus heating system with Energy Management System EMS For example simply pressing one key starts DHW heating at any time alternatively using the rotary selector can change the room temperature in the entire home The thermostatic radiator valves only need to be adjusted if an individual room is too cold or too hot The automatic control with the adjustable switching program ensure energy efficient operation by reducing the room temperature at certain times or by shutting down the entire heating system adjustable night setback The heating system is controlled in such a way that you benefit from optimum heating comfort and minimum energy consumption 2 2 Correct use The programming unit must only be used to operat
25. nerally you can adjust the room temperature using the rotary selector This can be done in three different ways Changing the room temperature temporarily The modified settings are retained until the heating system changes into a different operating mode e g night mode Changing the room temperature for the current operating mode e g automatic day mode The modified setting applies to automatic day mode from then onwards Changing the room temperature for an operating mode that is not currently selected e g changing the night room temperature during the day The modified setting applies to this operating mode from then onwards The actual room temperature is shown as the permanent display Your heating contractor can also set a different permanent display Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 17 E Function control 5 2 1 Changing the room temperature temporarily You are currently in automatic mode or in manual mode and would like to change the room temperature temporary set room temperature temporarily A temporary set room temperature is indicated by symbol vay This function is not supported in conjunction with the RC30 programming unit Instead use manual mode gt Chapter 5 1 page 15 Initial situation the flap is closed Operation Result A 1 Turn rotary selector 49M The current set room temperature is displayed
26. ntinuous heating Manual day mode is useful if you want to heat outside the usual times Automatic mode is switched off DHW heating is on factory setting Only the day mode LED illuminates Manual nighttime operation Factory setting 17 C Permanently reduced The heating system operates with a reduced room temperature factory setting Manual night mode is useful if you are occasionally absent for long periods Automatic mode is switched off DHW heating is off factory setting Only the night mode LED illuminates Tab 4 Explanation of the operating modes 1 The automatic day and night modes correspond to the manual day and night modes The only difference lies in the automatic changeover If the heating system operates under weather compensated control gt Chapter 6 1 li page 25 during spring and autumn you may feel that your home is too cold even though your heating system is in summer mode on account of the outside temperature only DHW heating In that case select manual mode to heat on an hourly basis Buderus 16 Logamatic EMS RC25 programming unit Subject to technical modifications Function control EM 5 2 Setting the room temperature If room temperatures are set below 10 C rooms may cool down so much that pipes in external walls for example may freeze in cold weather f NOTICE System damage due to frost gt Set room temperatures higher than 10 C Ge
27. or the entire heating system with the higher programming unit e g RC30 RC35 The set DHW temperature can be changed with the RC30 RC35 or the RC25 programming units however the setting range of the RC30 RC35 programming units applies maximum 80 C 5 3 1 Checking or changing the DHW temperature Initial situation the flap is closed Operation Result 1 Hold down and simultaneously turn rotary selector O The value can be changed 2 When you have reached the required DHW temperature O release the rotary selector Lil C The modified temperature is saved LILI The standard display appears again 1 Function dependent on the boiler used 2 Function not available on boilers with UBA Buderus 20 Logamatic EMS RC25 programming unit Subject to technical modifications Function control EM 5 3 2 Heating DHW only once To save energy during day mode DHW is only reheated automatically when its temperature falls 5 C below the set DHW temperature If you need large amounts of hot water one evening or outside the set times for day mode you can heat up the DHW Initial situation the flap is closed Operation 1 The LED of key illuminates if the DHW temperature falls below the set value To heat up the DHW manually press The LED at key flashes Heat up starts and is later terminated automatically 2 If you want to stop the hea
28. r a short time The heating control unit detects this and responds accordingly after a short time Do not adjust the thermostatic valves on the radiators and wait until the set room temperature is reached Even in summer mode radiators may be heated briefly under specific circumstances namely when the pump is started up automatically at a predefined interval to prevent it from seizing up jamming If the pump happens to start immediately after DHW heating the unusable residual heat is dissipated via the heating circuit and the radiators Buderus 28 Logamatic EMS RC25 programming unit Subject to technical modifications Troubleshooting EN Why does the pump run at night even though the home is not being heated at all or only very little This depends on the setting chosen by your heating contractor for night setback Reduced operation The pump still runs even if the home is only being heated a little to achieve a low room temperature Shutdown mode The heating system and therefore also the pump is automatically shut down in night mode If the outside temperature falls below the frost protection temperature the pump is automatically switched on by the Frost protection function Shutdown mode and Room setback mode The heating system is switched on automatically when the captured temperature falls below the set value The pump will then also start The actual room temperature is higher than the set room temperature Why is th
29. rogramming unit You can produce higher or lower temperatures in the other rooms by adjusting the thermostatic radiator valves Weather compensated control The temperature of the heating water in the boiler is defined by the heating curve You can select whether this heating curve will be influenced solely by the outside temperature or whether the temperature in the reference room should also have an influence Purely weather compensated control The outside temperature is captured by a temperature sensor The flow temperature is calculated solely on the basis of the outside temperature in accordance with the set heating curve You can set the room temperature for the entire home at the programming unit which will shift the heating curve up or down You must adjust the thermostatic radiator valves in every room in order to achieve the required room temperature Weather compensated control with room temperature hook up With this control mode the flow temperature is primarily determined by the outside temperature but is also influenced by the room temperature to the extent selected by your heating contractor The following applies to room temperature control and for weather compensated Li control with room temperature hook up The thermostatic radiator valves in the Reference room the room where the programming unit is installed must be fully open Control of the flow temperature is determined by the room temperature recorded there
30. t on the boiler programming unit to clear the fault For instructions regarding the reset function on the boiler programming unit see the technical documentation for the boiler and or boiler programming unit gt If the fault cannot be cleared display continues to flash notify your heating contractor Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 33 Index A Automatic mode 0 cece ee 15 c Gleaning xe pua aeaa tear e oo 7 Continuous heating manual day 15 D Day mode 1e xau merear e ns 15 DHW temperature setting 20 DHW heating up once ssssssesee 20 Disposal deutet m ena e nennt 7 E ENON QY Cose seteqeee salua anrea 7 tips for energy efficiency 26 Environment disposal 00 27 F FAUS osha ative det ath tea keane 30 Faults clearing esses 33 Flow temperature 0 cee 13 FIOSU dart vase 4d teased a aO RR CR 6 33 faults when there is a risk of frost 30 Frost protection cece eee ee 29 G Getting started eee 8 H Heating circuit Explanation 2 2 0 0 cece eee eee 13 Heating circuit selecting 13 M Manual day night mode 15 N Nightinmiode 2 o cieecneis areal e eoe 15 Night setback 1 0 0 0 0000s cee eee 29 o Operation modes 0 eee 15 Outside setback mode 29 Outside
31. ted program is saved The permanent display will then appear again The selected heating program will only be effective if automatic mode has been selected Li Chapter 5 1 page 15 Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 23 EM Function control Start and stop points in the heating programs No Program Day ON OFF ON OFF ON OFF Pri Family Mo Th 5 30 22 00 factory setting Fr 5 30 23 00 Sa 6 30 23 30 Su 7 00 22 00 Pr2 Early morning Mo Th 4 30 22 00 early shift work Fr 4 30 23 00 Sa 6 30 23 30 Su 7 00 22 00 Pr3 Evening Mo Fr 6 30 23 00 late shift work Sa 6 30 23 30 Su 7 00 23 00 Pr4 Morning Mo Th 5 30 8 30 12 00 22 00 part time work in Fr 5 30 8 30 12 00 23 00 the morning Sa 6 30 23 30 Su 7 00 22 00 Pr5 Afternoon Mo Th 6 00 11 30 16 00 22 00 part time work in Fr 6 00 11 30 15 00 23 00 the afternoon Sa 6 30 23 30 Su 7 00 22 00 Pr6 Midday Mo Th 6 00 8 00 11 30 13 00 17 00 22 00 at home at midday Fr 6 00 8 00 11 30 23 00 Sa 6 00 23 00 Su 7 00 22 00 Pr7 Single Mo Th 6 00 8 00 16 00 22 00 Fr 6 00 8 00 15 00 23 00 Sa 7 00 23 30 Su 8 00 22 00 Pr8 Elderly Mo Su 5 30 22 00 Pr9 New program Constant heating mode 24 h This is displayed on the RC25 programming unit whilst a new heating program is entered in the RC30 RC35 programming unit only if the RC25 is used as a remote control Pro Ow
32. temperature higher 28 Buderus P Packagihg e e s 27 Permanently reduced manual night 15 Power failure 0 cece eee eee 14 PUMP sia cc ees nece pantit ek nd 29 R RC25 heating circuits suse 13 Recycling oorr Ee 27 Reduced mode ssssssssss 29 Reference room eee cece eee eee 25 Remote control 13 Reset iiie canes e Ob eek o ee 33 Room setback mode s 29 Room temperature changing temporarily ssuue 18 discrepancy in displayed temperature 28 too cold too hot eee eee eee 8 Room temperature control 25 29 S Safety instructions 6 Shutdown mode asusa 29 Shutting dowh aessa Vine ee es t ees 14 Start point asa iiaee eee 24 SOP PON sfissa get me nada 24 Switching off cee eee 14 T Temperature see Room temperature Thermostatic valves uu 7 25 Types of control 25 U Used appliances n nnna unnan 27 Ww Weather compensated control 25 29 34 Logamatic EMS RC25 programming unit Subject to technical modifications Notes Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 35 Buderus Cotswold Way Warndon Worcester WR4 9SW Customer service 0844 892 3004 Technical support 0844 892 4224 www buderus commercial co uk In the UK and IE Buderus is a brand name of Bosch Thermotechnology Ltd Buderus
33. ting process press again after approx 10 30 minutes With instantaneous water heaters or combi boilers i Subject to the size of the DHW cylinder and the boiler output DHW will be available DHW is available almost immediately 1 Function not available on boilers with UBA Buderus Logamatic EMS RC25 programming unit Subject to technical modifications 21 Er Function control 5 4 Setting the time and day Your heating system requires the time and day to operate correctly You can set both at the programming unit e g following a prolonged power failure the clock continues to operate even after a power failure lasting a few hours If the RC25 programming unit has been assigned to an RC30 RC35 programming unit as a remote control the time and day can only be set at the RC30 RC35 programming unit The RC25 programming unit adopts the settings of the RC30 RC35 programming unit Operation Result 1 Open flap 2 Hold down and simultaneously turn rotary selector O _ The current time can be set I I l L ILL 3 Release amp The time is saved 4 Hold down and simultaneously turn rotary selector Cy p The current day 1 Mo 2 Tu 7 Su can be selected L 1234567 5 Release The day is saved Buderus 22 Logamatic EMS RC25 programming unit Subject to technical modifications Function control EM 5

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