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Introduction

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Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

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Introduction

With your purchase of this Logamatic control unit you
have acquired a product that promises you easy control
over your heating system. It offers you optimum heating
convenience and minimum energy consumption.

The control unit enables you to operate your heating
system to be able to combine your economical and
ecological aspirations. Of course, your personal comfort
is always priority.

The control unit, which is regulated by the MEC2
programming unit, is set up at the factory for immediate
use. Naturally, you or your heating contractor can modify
these default settings and adapt them to your individual
requirements.

The MEC2 programming unit is the central control unit.

Some functions which you may need are located behind
a flap. The keys behind this flap enable you to make
various adjustments.

The control concept is:

"Push and turn"

"This control unit speaks your language".

Your heating system offers a wealth of further useful
functions. Some examples of these are:

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Automatic summer/winter time changeover

–

Party/pause function

–

Holiday function

–

DHW heating at the touch of a button

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Содержание Logamatic 4121

Страница 1: ...Operating Instructions Control unit Logamatic 4121 4122 and 4126 7 747 016 733 03 2008 GB IE For users Read carefully before use ...

Страница 2: ...play 19 6 3 Selecting the operating mode 20 6 4 Setting the room temperature 23 6 5 Heating DHW 25 7 Extended functions 28 7 1 Keys for extended functions 28 7 2 Controlling the extended functions 29 7 3 Displaying operating values 29 7 4 Changing the permanent display 30 7 5 Setting the date and time 31 7 6 Selecting a heating circuit 33 7 7 Adjusting the room temperature for another heating circ...

Страница 3: ...ng a new heating program 63 8 3 Creating a new DHW program 66 8 4 Creating a new DHW circulation pump program 67 8 5 Thermal disinfection 68 9 Modules and their functions 69 9 1 ZM424 central module 70 9 2 FM441 function module accessory 72 9 3 FM442 function module accessory 74 9 4 FM445 function module Logamatic 4126 75 10 Boiler flue gas test 77 11 Troubleshooting 78 11 1 Simple troubleshooting...

Страница 4: ...ontrol unit which is regulated by the MEC2 programming unit is set up at the factory for immediate use Naturally you or your heating contractor can modify these default settings and adapt them to your individual requirements The MEC2 programming unit is the central control unit Some functions which you may need are located behind a flap The keys behind this flap enable you to make various adjustme...

Страница 5: ...the options offered by your heating system the greater the benefit you will be able to draw from it How does your heating system work Your heating system comprises the boiler with burner heating control unit pipework and radiators A DHW cylinder or an instantaneous water heater heats the water required for a shower bath or washing your hands Subject to the way your heating system has been installe...

Страница 6: ...All radiators are supplied with the same flow temperature The heat transferred to the room depends on the radiator surface and the heating water throughput Therefore the heat transfer can be manipulated via the thermostatic radiator valves What determines the heat demand of a room The heat demand of a room largely depends on the following factors Outside temperature Required room temperature Type ...

Страница 7: ...s that influence the room temperature and compensates for these What does the control unit calculate Advanced control units calculate the temperature required within the boiler the so called flow temperature subject to the outside temperature The relationship between the outside temperature and the flow temperature is described as the heating curve The lower the outside temperature the higher the ...

Страница 8: ...urces e g an open fireplace Now the control unit thinks that it is as hot in every room as in the reference room consequently the boiler output will be severely reduced so that for example the north facing rooms will become too cold With this kind of control you always need to keep all thermostatic radiator valves in the reference room fully open Weather compensated control with room temperature h...

Страница 9: ...ject to room temperature when the actual room temperature exceeds the set room temperature This function is only possible if a room temperature is being captured When changing from total shutdown to reduced heating total shutdown is activated subject to outside temperature when the actual outside temperature exceeds the set outside temperature What are heating circuits A heating circuit describes ...

Страница 10: ... cm Otherwise the heated air cannot circulate and heat the room adequately z In rooms you occupy during the day you can for example set a room temperature of 21 C whilst 17 C may be sufficient at night To achieve this use the standard heating mode day mode and the setback mode night mode Æ Chapter 6 z Never overheat rooms overheated rooms are unhealthy plus they waste money and energy If you reduc...

Страница 11: ...ified personnel The design and operation of this product conform to European Directives and the supplementary national requirements Its conformity is demonstrated by the CE designation You can view the Declaration of Conformity on the internet at www buderus de konfo or request a copy from your local Buderus sales office WARNING RISK TO LIFE Identifies possible risks associated with a product that...

Страница 12: ... up to 70 C start Tuesday night at 01 00 h z If required e g shift work your local heating contractor can alter the start time z During this time never open any hot water tap without mixing in cold water if the DHW circuit of your heating system is not equipped with a thermostatic mixer z As there is a risk of scalding at temperatures above approximately 60 C ask your local heating contractor abou...

Страница 13: ...nit controls Fig 4 Controls example Logamatic 4122 1 Slot 1 2 ZM435 boiler display 3 Connection for external service equipment and MEC2 4 Slot 2 5 ON OFF switch 6 Fuse 10 A slow USER INFORMATION The Logamatic 4122 control unit is also available with the MEC2 programming unit USER INFORMATION The system flow temperature is displayed on the boiler display ...

Страница 14: ... Slot 1 for ZM424 module comprising 2 Heating circ 1 mixed alternative Heating circ 1 unmixed DHW and DHW circulation 3 Heating circ 2 mixed 4 Slot A for FM455 module KSE1 5 Slot 2 for an additional module 6 MEC2 7 CM431 USER INFORMATION For the Logamatic 4126 control unit the FM445 module is installed in slot 1 DHW via primary system Æ Chapter 9 4 ...

Страница 15: ... selector The new value will be accepted and saved after you release the key You can reach certain functions such as day room temperature night room temperature and possibly the DHW temperature or automatic heating mode directly via the corresponding keys Æ Fig 6 1 to 3 and 6 Behind a flap Æ Fig 6 7 further keys are available for additional settings e g for the entry of weekdays or setting the cur...

Страница 16: ...mode 4 Automatic heating mode in acc with a time switch 5 Constant setback mode 6 Enter the day of the week 7 Enter holidays 8 Select standard display 9 Radio clock signal only within Germany 10 Display for set room temperature 11 Enter DHW temperature reheating 12 Set the time 13 Change temperature values 14 Summer winter time changeover 15 Back to the standard display 16 Select a time switch pro...

Страница 17: ...trol unit on by setting the ON OFF switch to I Æ Fig 4 5 page 13 After approximately 2 minutes all modules fitted to the control unit are recognised and the standard display is shown 5 4 Switching off the control unit z Switch the control unit off by setting the ON OFF switch to 0 Æ Fig 4 5 page 13 z When there is a risk Isolate the heating system from the mains supply with the emergency stop swit...

Страница 18: ...operation The standard functions are controlled by pressing one of the keys on the Standard functions keypad or by turning the rotary selector Example Adjusting the room temperature for day mode Press Day mode to select the standard heating mode day mode The LED of the Day mode key illuminates day mode is enabled Set the required room temperature by turning the rotary selector Condition For this t...

Страница 19: ... control unit or is installed as a wall mounted unit Factory set permanent display if the MEC2 is fitted in the control unit Factory set permanent display if the MEC2 is installed as a wall mounted unit USER INFORMATION If your heating system is equipped with several heating circuits first select the correct heating circuit Æ Chapter 7 6 Only then can you select the operating mode and room tempera...

Страница 20: ...amming unit does this for you It changes over between day mode standard mode and night mode setback mode The times at which your heating system changes from day to night mode and vice versa are factory set via standard programs Æ Chapter 7 10 However you or your heating contractor can modify these settings Æ Chapter 7 12 Manual mode For example if you want to heat longer in the evening or not quit...

Страница 21: ...ic mode Press AUT The AUT LED illuminates automatic mode is enabled In addition either the Day mode or the Night mode LED will illuminate This is subject to the set times for day and night mode Automatic day and night mode At fixed times central heating is provided or the room temperature is set back AUT Set room Automatic day 21 C Fig 8 Changeover from day and night mode at fixed times example 1 ...

Страница 22: ...Now your heating system is in constant day mode standard mode Press Night mode The Night mode LED illuminates Your heating system is now in constant night mode setback mode and operates at a lower room temperature Set room Constant day 21 C Set room Constant night 17 C USER INFORMATION If you have selected manual mode other automatic controls will also be switched off e g the summer winter time ch...

Страница 23: ...for the night room temperature is 17 C Any adjustment applies to all heating circuits assigned to the MEC2 programming unit Æ Chapter 7 7 6 4 1 For the current operating mode You are currently in automatic Day mode and would like to alter the room temperature Condition For this the programming unit flap must be closed Turn the rotary selector to the required day room temperature here 23 C The day ...

Страница 24: ... the set night temperature Hold down Night mode and select the required night room temperature with the rotary selector here 16 C Release Night mode The night setback temperature is now adjusted to 16 C The selected permanent display will then appear again Press AUT The AUT LED illuminates automatic mode is re enabled Set room Constant night 16 C AUT USER INFORMATION If you are currently in automa...

Страница 25: ...will be stopped outside the programmed times i e DHW is not heated in night mode DHW heating is factory set to 60 C in automatic mode We recommend heating the DHW cylinder once in the morning before central heating begins and reheating once in the evening if necessary see Æ Fig 9 Tag Zeit Temp Urlaub Auswahl So Wi Anzeige Heizkreis Zurück AUT Fig 9 Example DHW heating 1 Day mode 2 Night mode 3 OFF...

Страница 26: ...ALDING from hot water The DHW cylinder temperature is preset to 60 C There is a risk of scalding from hot water if your heating contractor has set the DHW temperature higher or has enabled the Therm Disinfect function and the heating water circuit of your heating system is not equipped with a thermostatically controlled mixer Please note that fittings can also get very hot z In such cases only eve...

Страница 27: ...as follows Press DHW The LED of the DHW key illuminates and heating DHW once begins Subject to the size of the DHW cylinder and the boiler output DHW will be available after approximately 10 to 30 minutes With instantaneous water heaters DHW is available almost immediately DHW Reheating actual 55 C USER INFORMATION For thermal disinfection the DHW will be heated to at least 60 C once or twice per ...

Страница 28: ...e Set the date Set heating circuits Select a heating program Set the room temperature for additional heating circuits The keys for the extended functions are located behind the flap of the MEC2 programming unit 7 1 Keys for extended functions Fig 10 Keys for the extended functions 1 Enter the day of the week 2 Enter holidays 3 Select standard display 4 Set the time 5 Change temperature values 6 Su...

Страница 29: ... and control the various operating values of the boiler the selected heating circuit and the system Only the operating values of the selected heating circuit e g heating circuit 0 are displayed Æ Chapter 7 6 z Open flap Turn the rotary selector clockwise without pressing any other key Subject to the modules various of the following operating displays can be called up Burner and hours run Actual he...

Страница 30: ...ing unit The following permanent displays are available System flow if MEC2 is installed as a wall mounted unit Outdoor temperature DHW Time Date Only if a DHW function is installed Hold down Display and select the required permanent display with the rotary selector here Date Release Display The selected permanent display has now been saved AUT Common flow Date 20 08 2001 45 C ...

Страница 31: ...corrects the control unit time switch if enabled Reception of the radio clock signal is indicated by symbol on the display USER INFORMATION Date and time are preset at the factory This function is backed up by battery power independent of the mains power supply AUT USER INFORMATION We recommend leaving the radio clock receiver disabled outside Germany to prevent the reception of false signals inco...

Страница 32: ...nday if you set the date using the rotary selector here 20 Release Weekday to save your input Press Weekday again to enter the month Press Weekday again to enter the year The item flashing can be modified with the rotary selector Setting the time Hold down Time and select the required time with the rotary selector The time is set in one minute steps Release Time to save your input Set date Monday ...

Страница 33: ... equipment level of your heating system the following heating circuits can be selected MEC2 heating circuits all heating circuits assigned to the MEC2 Æ Chapter 7 8 Heating circuit 0 8 DHW DHW circulation z Open flap Hold down Heating circuit and select the required heating circuit with the rotary selector here Heating circ 2 Release Heating circuit The displayed heating circuit is now selected As...

Страница 34: ...uits all heating circuits assigned to the MEC2 Æ Chapter 7 8 Heating circuit 0 8 If several heating circuits are assigned to the MEC2 the temperature for these heating circuits can only be adjusted for all Otherwise a fault message Setting Not possible MEC heat circ select will appear In such cases select MEC heat circ z Open flap Hold down Heating circuit and select the required heating circuit w...

Страница 35: ... the key to save your input The day room temperature is now adjusted to 21 C The selected permanent display will then appear again Set room Automatic day 21 C USER INFORMATION If you want the adjust the temperature for an operating mode that is not the current mode first select the corresponding operating mode e g by pressing Night mode After modifying the temperature reset the operating mode to t...

Страница 36: ...he MEC2 and you want to make one of the above adjustments the fault message Setting Not possible MEC heat circ select will appear Select MEC heat circ to program these settings Æ Chapter 7 6 Individual heating circuits The following adjustments can only be implemented for each individual heating circuit separately Selecting the standard program Modifying the standard program by moving switching po...

Страница 37: ...e your heating system takes to heat up individual rooms may vary This will be subject to the outside temperature the building insulation and the room temperature setback The Optimisation function of the programming unit calculates the various heat up times Ask your heating contractor whether this function has been enabled If so all you need to do is enter the times at which your home should be war...

Страница 38: ...you may at short notice heat DHW with the DHW heating once function Æ Chapter 6 5 1 Fig 12 DHW heating begins 30 minutes before day mode of the first heating circuit and ends with the beginning of night mode of the last heating circuit A Heating circ 1 B Heating circ 2 C DHW 1 Day mode 2 Night mode 7 747 012 053 19 1RS 1 2 06 30 23 00 1 2 06 00 A B 1 2 05 30 23 00 C 30 min 22 00 USER INFORMATION D...

Страница 39: ...elect a heating circuit Æ Chapter 7 6 Hold down PROG Initially the heating circuit is displayed for which you want to select a standard program Approximately 2 seconds later the designation of the currently selected standard program will appear Select the required standard program with the rotary selector here Seniors Release PROG The displayed program is now selected The display shows the program...

Страница 40: ...00 12 00 12 00 22 00 23 00 Afternoon Part time work in the afternoon Mo Th Fr Sa Su 06 00 06 00 06 30 07 00 11 30 11 30 23 30 22 00 16 00 15 00 22 00 23 00 Noon Noon at home Mo Th Fr Sa Su 06 00 06 00 06 00 07 00 08 00 08 00 23 00 22 00 11 30 11 30 13 00 23 00 17 00 22 00 Single Mo Th Fr Sa Su 06 00 06 00 07 00 08 00 08 00 08 00 23 30 22 00 16 00 15 00 22 00 23 00 Seniors Mo Su 05 30 22 00 New You...

Страница 41: ... The modified standard program is saved under Own and the number of the heating circuit The heating program memory is available for this The following example shows how the switching points of the standard program Family can be changed for the days Monday to Thursday z Open flap z Select a heating circuit here Heating circ 2 Æ Chapter 7 6 AUT Fig 13 Changing the switching points from 05 30 to 06 3...

Страница 42: ...w saved The modified switching point will be saved under the Own program and the number of the heating circuit here 2 Continue to turn the rotary selector until the next switching point that you want to change is displayed The OFF switching point for Monday appears Now you can modify the time for the OFF switching point Hold down Time and select the required time with the rotary selector Example 2...

Страница 43: ... system will now heat from 06 30 h to 23 00 h Monday to Thursday Press Back to return to the permanent display The modified standard program is saved under Own and the number of the heating circuit USER INFORMATION You can change the weekday if you press Weekday instead of Time You can change the switching state ON OFF by pressing Display instead of Weekday or Time The operating mode determines th...

Страница 44: ...lly changes over between summer and winter mode Summer mode Heating operation is switched off if the Adjusted outdoor temperature exceeds the factory set changeover threshold of 17 C Summer mode is indicated on the display with symbol DHW heating remains operational Press Day mode if you want to heat at short notice in summer mode The heating system returns to automatic summer mode if you press AU...

Страница 45: ...you want to heat here 18 C The display shows the set changeover temperature Release Su Wi to save your input Setting up constant summer mode z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 Hold down Su Wi The display briefly shows the heating circuit Then turn the rotary selector to a changeover temperature below 10 C The display shows Constant summer Release Su Wi to save your inp...

Страница 46: ...oximately three seconds the permanent display will appear again Automatic 30 minutes before the first heating circuit is switched on the DHW cylinder will heat the water to the set temperature and stop when the last heating circuit is switched off factory setting Alternatively you can enter your own DHW program Æ Chapter 8 3 Press Automatic to select automatic mode After approximately three second...

Страница 47: ...ion pump will operate at the set interval i e independently of the heating circuits Press Day mode to select constant operation After approximately three seconds the permanent display will appear again Automatic 30 minutes before the first heating circuit is started the DHW circulation pump starts to run at the set interval and stops when the last heating circuit is switched off factory setting Al...

Страница 48: ...re of 12 C for example z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 Enter holiday function Hold Holiday down and select the required number of days with the rotary selector here 5 The display shows 5 Release Holiday to save your input USER NOTE As the holiday function is enabled immediately after completing your entry you should only enter this function on the day of your depart...

Страница 49: ...he number of holiday days to 0 Holiday days Set room 12 C 5 USER INFORMATION DHW heating and DHW circulation will be switched off automatically if DHW is heated subject to the heating circuits Program select by heat circs Æ Chapter 8 3 and all heating circuits are set to holiday mode You cannot enter a separate DHW holiday function USER INFORMATION A separate DHW holiday function can be entered if...

Страница 50: ...upt the holiday function any time by pressing Day mode In this case the system heats according to the set room temperature Æ Chapter 6 4 Continuing the holiday function Press AUT to continue the interrupted holiday function Interrupting the holiday function Press Night mode The display shows Constant night You may interrupt the holiday function at any time by pressing Night mode In this case the s...

Страница 51: ...want to cancel the party function call up party function as described above and turn the rotary selector to 0 7 19 Setting the pause function This function only applies to heating circuits to which the MEC2 has been assigned as a remote control unit MEC heat circ All heating circuits without an MEC2 continue to operate normally Enter the length of time the system should heat to the preset room tem...

Страница 52: ...mp and turn the rotary selector to the required value here 0 5 C The display shows the set value Release Temp to save your input Press Back to return to the permanent display The display shows the corrected temperature 22 5 C USER INFORMATION This function is only available if the MEC2 is fitted within the living space If the room temperature shown on the display varies from the actual temperature...

Страница 53: ... Open flap Turn the rotary selector You will see either maint after Date or maint after Hours run z Notify your local heating contractor to schedule the inspection and maintenance work The Logamatic telecontrol system enables the maintenance message to be transmitted automatically to your mobile PC or fax machine Note maint message maint after required Date maint after required Hours run USER INFO...

Страница 54: ...mstances 8 1 Modifying the standard program by inserting deleting switching points 8 1 1 Inserting switching points You can interrupt heating phases by inserting switching points details Weekday time temperature into an existing heating program Example The standard Family program provides constant heating on Fridays from 05 30 until 23 00 h Insert two new switching points if for example you do not...

Страница 55: ...d The display shows the blank screen New switch point for the new switching point Hold down Weekday and turn the rotary selector to the required day here Friday You can select days individually or in blocks Monday Thursday Monday Friday Saturday Sunday Monday Sunday Release Weekday to save your input Hold Time down and select the required time with the rotary selector here 10 00 Friday at 10 00 is...

Страница 56: ...y 17 C at 10 00 USER INFORMATION You cannot freely enter any temperature here Only the factory set day and night temperatures are available which you can however modify yourself Æ Chapter 6 4 USER INFORMATION Only after all three details day time temperature have been defined for the new switching point will it be automatically saved under Own program and the heating circuit number here 2 This sav...

Страница 57: ...am name Own and the number of the heating circuit z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 z Select the standard program for the chosen heating circuit Æ Chapter 7 10 Example Family program The first switching point start point Monday at 05 30 at 21 C will be displayed AUT Fig 16 Deleting a switching point A Family program B New program Own program 2 1 Day mode 2 Night mode ...

Страница 58: ...no blocks are left The deleting process will be terminated if you release the keys prematurely Simultaneously release Holiday and Display to save your input The display shows the next switching point The new program that has been modified by the deletion is saved under Own program and the relevant heating circuit number here 2 You can call up your new program by pressing Prog and turning the rotar...

Страница 59: ... 00 h Your modified program will be saved under the program name Own and the number of the heating circuit z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 z Select the standard program for the chosen heating circuit Æ Chapter 7 10 Example Midday program The first switching point start point Monday at 06 00 at 21 C will be displayed The displayed temperature depends on the set room ...

Страница 60: ...hase has been deleted when no blocks are left The deleting process will be terminated if you release the Time key prematurely or turn the rotary selector back In this case all switching points for the heating phase remain active Release Time to save your input The display shows the next switching point The new program that has been modified by the deletion is saved under Own program and the releva...

Страница 61: ... from 11 30 until 22 00 h Your modified program will be saved under the program name Own and the number of the heating circuit z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 z Select the standard program for the chosen heating circuit Æ Chapter 7 10 here Midday program The first switching point start point Monday at 06 00 at 21 C will be displayed Turn the rotary selector to the s...

Страница 62: ...eleted in one second intervals from left to right When no blocks are left both heating phases have been combined The deleting process will be terminated if you release the Time key prematurely or turn the rotary selector back In this case all switching points for the heating phase remain active Release Time to save your input The new program that has been modified by the connection process is save...

Страница 63: ...and the relevant heating circuit number Example Monday Friday from 05 00 h 21 C from 21 00 h 17 C Saturday Sunday from 09 30 h 21 C from 23 30 h 17 C z Select a heating circuit Æ Chapter 7 6 Example Heating circ 2 z Select the standard program Program select new for this heating circuit Æ Chapter 7 10 The display shows the blank screen New switch point AUT Fig 19 New heating program A New heating ...

Страница 64: ...eekday to save your input Hold Time down and select the required time with the rotary selector here 05 00 The display shows the new switching point Release Time to save your input Hold Temp down and select the required temperature with the rotary selector here 21 C You cannot freely enter any temperature here Only the factory set day and night temperatures are available which you can however modif...

Страница 65: ...t switching point z Enter the second switching point Monday Friday 21 00 h 17 C z Enter the third switching point Saturday Sunday 09 30 h 21 C z Enter the fourth switching point Saturday Sunday 23 30 h 17 C To enter the second to fourth switching points you only need to repeat the steps described above Press Back to return to the permanent display only after all switching points have been correctl...

Страница 66: ...ew switching point z Enter the switching points Æ Chapter 8 2 DHW heating will now operate according to your Own program DHW You can call up your new Own program DHW by pressing Prog and turning the rotary selector Æ Chapter 7 6 USER INFORMATION With the factory setting Program select by heat circs DHW heating begins 30 minutes prior to the first switching point of all heating circuits associated ...

Страница 67: ...screen New switch point for the new switching point z Enter the switching points Æ Chapter 8 2 Your DHW circulation pump will now operate according to your Own program CP You can call up your new Own program CP by pressing Prog and turning the rotary selector USER INFORMATION With the factory setting Program select by heat circs the DHW circulation pump will automatically start 30 minutes before t...

Страница 68: ...DHW circulation pump if installed run constantly during thermal disinfection Thermal disinfection is started according to the times set at the factory If required your heating contractor can alter these settings Thermal disinfection is indicated by the LED display Z on the FM441 and FM445 modules WARNING RISK OF SCALDING from hot water in the DHW circuit of the heating system if it is not equipped...

Страница 69: ... X X FM445 function module LAP LSP primary system X X O FM446 function module EIB interface X X X FM448 function module Central fault message X X X FM455 function module KSE 1 only with ZM424 O FM456 function module KSE 2 cascade 2 boilers X X X FM457 function module KSE 4 cascade 4 boilers X X X FM458 function module Strategy module Tab 2 Modules and their functions The following pages contain in...

Страница 70: ...tor 0lights up The control functions remain operational in manual mode Fig 20 ZM424 1 Boiler heating circuit 1 DHW 2 Heating circ 2 3 Switch Display 0 General fault e g on site faults sensor faults external faults wiring faults internal module faults manual mode The fault messages appear as plain text on the MEC2 programming unit LEDs for the following functions Display a Burner operational Displa...

Страница 71: ...ORMATION In standard mode set the switch to AUT The heating circuit pump is switched on The mixer is switched to zero volt and can be manually operated AUT The central heating or DHW circuit operates in automatic mode 0 The heating circuit pump and possibly the cylinder primary pump as well as the DHW circulation pump are stopped The mixer is switched to zero volt The control functions continue to...

Страница 72: ...l mode Fig 21 FM441 Display General fault e g on site faults sensor faults external faults wiring faults internal module faults manual mode Fault messages appear as plain text on the MEC2 programming unit LEDs for the following functions Display Mixer opens hotter Display Mixer closes colder Display Heating circuit in summer mode Display DHW in night mode below the set temperature Display Heating ...

Страница 73: ...ircuit switch 2 DHW switch 1 2 for heating circ 1 for DHW supply USER INFORMATION In standard mode the switches should be set to AUT The heating circuit pump or primary pump is switched on The mixer is switched to zero volt and can be manually operated The DHW circulation pump is switched off AUT The heating circuit or DHW circuit operates in automatic mode 0 The heating circuit pump or cylinder p...

Страница 74: ...f the switches are not set to automatic a message to this effect appears on the MEC2 programming unit and fault indicator 0illuminates Fig 23 FM442 1 Heating circuit x 2 Heating circuit y 1 2 Display General fault e g on site faults sensor faults external faults wiring faults internal module faults manual mode Fault messages appear as plain text on the MEC2 programming unit LEDs for the following ...

Страница 75: ...ates The control functions remain operational in manual mode Fig 24 FM445 Display 0 General fault e g on site faults sensor faults external faults wiring faults internal module faults manual mode The fault messages appear as plain text on the MEC2 programming unit LEDs for the following functions Display X DHW is remains below the set temperature in setback night mode Display U Mixer opens hotter ...

Страница 76: ...ndard mode set the switch to AUT WARNING RISK OF SCALDING In manual mode you are at risk from scalding z Always open the cold water tap and mix with hot water according to requirements The secondary primary pump is switched on The mixer is switched to zero volt and can be manually operated AUT The DHW primary system operates in automatic mode 0 The primary and secondary pumps and the DHW circulati...

Страница 77: ... draw off points z Only draw off mixed hot and cold water during or just after a flue gas test Note that when mono lever mixer taps are in their usual position the water drawn may be too hot z Never draw off hot water only when using twin lever mixer taps USER INFORMATION Observe the relevant national requirements regarding limiting the flue gas losses of your heating system z Arrange an annual fl...

Страница 78: ...al mode DHW HE sensor DHW Sensor OFF DHW Sensor ON Boiler x No connection Low loss header Flow sensor Boiler x Three way valve Solar Cylinder X in manual mode Boiler Outside temperature sensor Heating circuit x Flow sensor DHW DHW sensor DHW stays cold DHW Therm disinfect DHW EMS DHW DHW warning Heating circuit x Remote control Heating circuit x Communication Heating circuit x Heating circuit X in...

Страница 79: ...in contact problems Fit MEC2 correctly Room cool Actual room temperature for the respective heating circuit is incorrectly displayed Check the heating circuit assignment Control unit operates in setback mode Check time and heating program and modify if required Set room temperature is too low Correct the set room temperature DHW supply runs for too long Check DHW heating Heat sources deliver insuf...

Страница 80: ...t x communication fault No communication between one BFU and the control unit Remote control may be faulty Notify your local heating contractor Boiler 1 status y burner fault It goes cold Try and remedy the boiler fault Æ see technical boiler documentation DHW sensor fault DHW heating via Logamatic 4000 If the DHW sensor is faulty water will not be heated for safety reasons Notify your local heati...

Страница 81: ...ff the control unit e g with the heating system emergency stop switch or isolate the heating system from the mains supply by removing the main fuse z Arrange for your local heating contractor to rectify any heating system faults immediately CAUTION SYSTEM DAMAGE If an underfloor heating system is installed Before operating your heating system manually check the temperature settings of the temperat...

Страница 82: ...tch Q on the wall mounted boiler In case of faults immediately notify your local heating contractor who will provide a professional service Notify your contractor of the faults displayed on the MEC or the fault code on the boiler Manually disconnect the heating circuit mixer and position towards hotter or colder until the required room temperature is achieved Fig 25 Logamatic 4121 20 25 15 B 3 2 1...

Страница 83: ...g 26 3 at selector switch to manual z Set boiler water thermostat on the boiler to the required temperature z Switch on Flue gas test switch Q on the wall mounted boiler Fig 26 Logamatic 4126 20 25 15 B 1 2 3 2 3 1 WARNING RISK OF SCALDING from hot water The DHW temperature can be set to a maximum of 80 C Settings higher than 60 C create a risk of scalding at the draw off points z Ask your local h...

Страница 84: ...range Factory settings Setting Program selection Family Early morning Late evening Morning Afternoon Noon Single Seniors New Family DHW 30 C 60 C 60 C Summer winter time changeover 10 C 30 C Constant summer Constant winter 17 C Day room temperature 11 C 30 C 21 C Night room temperature 2 C 29 C 17 C Holiday room temperature 10 C 30 C 17 C Thermal disinfection Yes No No Heating circ Assignment Heat...

Страница 85: ...it 33 34 72 Heating circuit function 71 73 Heating circuits assignment 84 Heating control unit 5 Heating phase 59 Heating program 28 37 39 Holiday function 48 50 Holiday program 48 I Instantaneous water heater 5 K Keypad 15 L LEDs 72 74 M Manual mode 20 22 80 N Night mode 9 20 O Operating mode Automatic 21 Day 22 Manual 20 22 Night 22 Operating values 29 84 P Permanent display 19 30 Pipework 5 R R...

Страница 86: ...Notes Logamatic 4121 4122 and 4126 Subject to technical modifications 86 ...

Страница 87: ...Notes Logamatic 4121 4122 and 4126 Subject to technical modifications 87 ...

Страница 88: ... co uk C F Quadrant Ltd Unit L40 Cherry Orchard Industrial Estate Cherry Orchard Dublin 10 Tel 01 6305700 Fax 01 6305706 01 6305715 www cfquadrant ie E mail sales cfquadrant ie In the UK and IE Buderus is a brand name of Bosch Thermotechnology Ltd Bosch Thermotechnik GmbH Sophienstrasse 30 32 D 35576 Wetzlar www buderus de info buderus de ...

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