Buderus Logamatic 4121 Operating Instructions Manual
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Buderus Logamatic 4121 Operating Instructions Manual

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Operating Instructions
Logamatic 4121, 4122 and
4126
Control unit
For users
Read carefully before use

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Summary of Contents for Buderus Logamatic 4121

  • Page 1 Operating Instructions Control unit Logamatic 4121, 4122 and For users 4126 Read carefully before use...

  • Page 2: Table Of Contents

    ........48 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 3 ..........85 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 4: Introduction

    Your heating system offers a wealth of further useful functions. Some examples of these are: – Automatic summer/winter time changeover – Party/pause function – Holiday function – DHW heating at the touch of a button Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 5: What You Should Know About Your Heating System

    The burner combusts fuel (e.g. gas or oil) and heats the water inside the boiler. Using pumps, this hot water is transported through the pipework to the consumers (radiators, underfloor heating system, etc). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 6 – Internal heat sources (open fireplace, occupants, lamps, etc.) – Closed or open windows Take these factors into consideration to achieve a comfortable room temperature. Fig. 2 Influences on the room climate Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 7 The control unit can operate in three control modes: – Weather-compensated control – Room temperature-dependent control – Weather-compensated control with room temperature hook-up Fig. 3 Heating circuit curve (example) x Outdoor temperature y Flow temperature Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 8 With this kind of control you always need to keep all thermostatic radiator valves in the reference room fully open. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 9 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. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 10: Tips On Energy-Efficient Heating

    Research has shown that it is generally sufficient to run the DHW circulation pump for only three minutes every half hour. Arrange for your local heating contractor to service your heating system annually. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 11: Safety

    USER INFORMATION User tips for the optimum utilisation and adjustment of the appliance plus other useful information. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 12: Cleaning The Control Unit

    Only clean the control unit with a damp cloth. Disposal Dispose of the control unit packaging in an environmentally responsible manner. The lithium battery in the CM431 module may only be replaced by your local heating contractor. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 13: Controls And Mec2 Programming Unit

    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. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 14 4 Slot A for FM455 module KSE1 USER INFORMATION For the Logamatic 4126 control unit, the FM445 module is installed in slot 1 (DHW via primary system) ( Chapter 9.4). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 15: Mec2 Programming Unit

    6 Enter DHW temperature/reheating The unit automatically returns to the standard display 7 Flap for the keypad of control level 2 if no entry is detected for some time. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 16 6 Enter the day of the week 14 Summer/winter time changeover 7 Enter holidays 15 Back to the standard display 8 Select standard display 16 Select a time switch program 17 Select heating circuits/DHW circuit Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 17: Switching On The Control Unit

    Fig. 4, [5], page 13). When there is a risk: Isolate the heating system from the mains supply with the emergency stop switch upstream of the boiler room, or by removing the main fuse. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 18: Standard Functions

    Set the required room temperature by turning the rotary selector. (Condition: For this, the programming unit flap must be closed.) The display shows the set value. Set room 21°C Constant day Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 19: Permanent Display

    Factory-set permanent display, if the MEC2 is fitted in the control unit. Common flow 45°C Outside temp. 21°C Factory-set permanent display, if the MEC2 is installed as a wall mounted unit. Actual room 19.5°C Outside temp. 0°C Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 20: Selecting The Operating Mode

    ( Chapter 6.3.2). You can also use manual mode to heat on cooler days when the system operates in summer mode. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 21 At fixed times, central heating is provided or the room temperature is set back. 21 °C 17 °C 05:30 22:00 7 747 012 053-18.1RS Fig. 8 Changeover from day and night mode at fixed times (example) 1 Day mode 2 Night mode Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 22 (setback mode), and operates at a lower room temperature. Set room 17°C Constant night USER INFORMATION If you have selected manual mode, other automatic controls will also be switched off, e.g. the summer/winter time changeover ( Chapter 7.13). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 23: Setting The Room Temperature

    Turn the rotary selector to the required day room temperature (here: "23°C"). The day room temperature is now adjusted to 23 °C. The selected permanent display will then appear again. Set room 23°C Automatic day Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 24 The "AUT" LED illuminates; automatic mode is re-enabled. USER INFORMATION If you are currently in automatic night mode, and you wish to adjust the day mode, proceed as described above, but instead hold down "Day mode". Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 25: Heating Dhw

    (see ( Fig. 9). USER INFORMATION The DHW temperature will have fallen below the set value if the green "DHW" LED illuminates. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 26 2 seconds. The permanent display will then appear again. 60°C USER INFORMATION For thermal disinfection, the DHW will be heated to at least 60 °C once or twice per week to kill off possible bacteria (e.g. legionella). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 27 55°C Reheating USER INFORMATION For thermal disinfection, the DHW will be heated to at least 60 °C once or twice per week to kill off possible bacteria (e.g. legionella). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 28: Extended Functions

    3 Select standard display 4 Set the time 5 Change temperature values 6 Summer/winter time changeover 7 Return to the standard display 8 Select a time switch program 9 Select heating circuits/DHW circuit Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 29: Controlling The Extended Functions

    – Actual DHW temperature* – Set DHW temperature* – DHW operating mode* – Operating state - DHW circulation pump and cylinder primary pump *Only if a DHW function is installed. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 30: Changing The Permanent Display

    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. Common flow 45°C Date 20.08.2001 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 31: Setting The Date And Time

    Reception of the radio clock signal is indicated by symbol on the display. USER INFORMATION We recommend leaving the radio clock receiver disabled outside Germany to prevent the reception of false signals (incorrect time setting). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 32 Setting the time Hold down "Time", and select the required time with the rotary selector. The time is set in one-minute steps. Set time Release "Time" to save your input. 15:52:58 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 33: Selecting A Heating Circuit

    Release "Heating circuit". The displayed heating circuit is now selected. Heat. circ. sel. As soon as the heating circuit has been selected, the display returns to the permanent display. Heating circ. 2 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 34: Adjusting The Room Temperature For Another Heating Circuit

    Release "Heating circuit". The displayed heating circuit is now selected. Heat. circ. sel. Heating circ. 2 As soon as the heating circuit has been selected, the display returns to the permanent display. Actual room 19.5°C Outside temp. 0°C Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 35 "Night mode"). After modifying the temperature, reset the operating mode to the previous setting. USER INFORMATION For heating circuits with individual remote control units (e.g. BFU), you can adjust the room temperature only via these units see remote control instructions). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 36: Heating Circuits With Mec2 Programming Unit

    "Time switch Not possible. Single heat Time switch circ select" will appear. Not possible Single heat circ Enter these settings for each heating circuit separately ( Chapter 7.6). select Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 37: Selecting And Modifying A Heating Program

    2 Night mode USER INFORMATION After commissioning, check whether the selected heating program suits your lifestyle. If not, several options are available for matching the heating program to your individual requirements. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 38 "Manual day" mode, and DHW is being heated "by heat. circs". USER INFORMATION DHW will not be heated if you are operating all heating circuits in the "Manual night" mode and DHW is heated "by heat. circs.". Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 39: Selecting A Standard Program

    (here "Senior program"). Senior program Monday 21°C at 05:30 Press "Back" to return to the permanent display. USER INFORMATION Switching programs are only effective in automatic mode ( Chapter 6.3.1). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 40: Summary Of Standard Programs

    ( Chapter 8.2). This will be saved under "Own" and the number of the heating circuit. Tab. 1 Standard programs ("ON" = day mode, "OFF" = night mode) Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 41: Modifying The Standard Program By Moving Switching Points

    Fig. 13 Changing the switching points from 05:30 to 06:30 h and from 22:00 to 23:00 h (example) A "Family program" B New program "Own program 2" 1 Day mode 2 Night mode Open flap. Select a heating circuit (here: "Heating circ. 2", Chapter 7.6). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 42 "OFF" switching point. Hold down "Time", and select the required time with the rotary selector. Example: "23:00". Release "Time". The newly adjusted time for the "OFF" switching point is saved. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 43 "ON" = day mode; "OFF" = night mode. Ensure that a stop point is associated with every start point. The modified standard program is saved under "Own" and the number of the heating circuit. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 44: Setting The Summer/Winter Time Changeover

    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 "AUT". Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 45 30 °C. The display shows "Constant winter". Summer / Winter Release "Su/Wi" to save your input. Your heating system will constantly operate in winter mode. Constant winter Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 46: Setting The Dhw Operating Mode

    DHW heating is switched off. By pressing "DHW", you will switch heating on for the duration of "DHW heating once". Press "Night mode" to stop DHW heating. After approximately three seconds, the permanent display will appear again. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 47: Setting The Operating Mode For Dhw Circulation

    DHW circulation pump on for the duration of heating DHW once. Press "Night mode" to switch off DHW circulation. After approximately three seconds, the permanent display will appear again. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 48: Setting The Holiday Function

    Release "Holiday" to save your input. Set room 17°C USER INFORMATION The "Set room" display only appears if the "Hold room temp" holiday setback type or "Reduced" has been set by your heating contractor. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 49 A separate DHW holiday function can be entered if DHW is produced according to a separate time program ("Program selection own DHW", Chapter 8.3). The DHW circulation pump is switched off automatically during the DHW holiday function. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 50: Interrupting And Continuing The Holiday Function

    You may interrupt the holiday function at any time by pressing "Night mode". 17°C In this case the system heats according to the set night temperature Chapter 6.4). Constant night Continuing the holiday function Press "AUT" to continue the interrupted holiday function. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 51: Setting The Party Function

    3 hours If you want to cancel the pause function, call up pause function as described above and turn the rotary selector to "0". Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 52: Room Temperature Matching

    The display shows the set value. Calibration MEC Release "Temp" to save your input. Room temperature Correction 0.5°C Press "Back" to return to the permanent display. The display shows the corrected temperature (22.5 °C). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 53: Automatic Maintenance Message

    PC or fax machine. required maint. after Hours run required USER INFORMATION The automatic maintenance message remains active until it is reset by your heating contractor. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 54: Additional Programming Options

    23:00 7 747 012 053-14.1RS Fig. 15 Inserting switching points to interrupt a heating phase A "Family program" B New program "Own program 2" 1 Day mode 2 Night mode Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 55 "Friday at 10:00" is now set as the new switching point. New switch.point Release "Time" to save your input. Friday at 10:00 ---- Hold "Temp" down, and select the required temperature with the rotary selector (here: "17°C"). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 56 To enter the next switching point (e.g. "Friday, 13:00, 21 °C"), first repeat the procedure detailed above. New switch.point -------------- at --- ---- Press "Back" to return to the permanent display. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 57 Select the standard program for the chosen heating circuit ( Chapter 7.10). Example: Family program The first switching point (start point): "Monday at 05:30" at "21°C" will be displayed. Family program Monday 21°C at 05:30 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 58 You can call up your new program by pressing "Prog" and turning the rotary 21°C 21°C at 17:00 h at 17:00 selector ( Chapter 7.10). Press "Back" to return to the permanent display. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 59 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 temperature. Midday program Monday 21°C at 06:00 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 60 You can call up your new program by pressing "Prog" and turning the rotary 21°C 21°C at 17:00 h at 17:00 selector ( Chapter 7.10). Press "Back" to return to the permanent display. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 61 The first switching point (start point): "Monday at 06:00" at "21°C" will be displayed. Midday program Monday 21°C at 06:00 Turn the rotary selector to the stop point of the first heating phase you want to connect with another (here: "13:00"). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 62 You can call up your new program by pressing "Prog" and turning the rotary Monday selector ( Chapter 7.10). at 22:00 17°C Press "Back" to return to the permanent display. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 63: Creating A New Heating Program

    Example: Heating circ. 2 Select the standard program "Program select. new" for this heating circuit Chapter 7.10). The display shows the blank screen "New switch.point". New switch.point -------------- ---- at --- Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 64 You cannot freely enter any temperature here. Only the factory-set day and night temperatures are available, which you can, however, modify New switch.point yourself ( Chapter 6.4). Monday-Friday at 05:00 21°C Release "Temp" to save your input. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 65 Your heating program will now operate according to your "Own program". You can call up your new "Own program" by pressing "Prog" and turning the rotary selector. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 66: Creating A New Dhw Program

    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 ( Chapter 7.6). Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 67: Creating A New Dhw Circulation Pump Program

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

  • Page 68: 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 on the FM441 and FM445 modules. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 69: Modules And Their Functions

    Particularly the modules FM443, FM444, FM446, may be fitted as standard equipment. FM448, FM456, FM457 and FM458 are described Accessories separately in the technical module documentation. – Combination/installation not possible Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 70: Zm424 Central Module

    Display "Mixer opens" (hotter) Display "Mixer closes" (colder) Display Heating circuit 2 in summer mode Display Heating circuit pump operational Display Cylinder primary pump operational Display DHW circulation pump operational Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 71 : The heating circuit and cylinder primary pumps start when "4000 cylinder" has been selected in the "DHW" menu ( service instructions). LEDs indicate the current function status. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 72: Fm441 Function Module (Accessory)

    Heating circuit in summer mode Display DHW in night mode below the set temperature. Display Heating circuit pump operational Display Cylinder primary pump operational Display DHW circulation pump operational Display Thermal disinfection enabled Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 73 The heating circuit pump or cylinder primary pump as well as the DHW circulation pump are switched off. The mixer is switched to zero volt. The control functions remain active. Current functions are indicated by LEDs. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 74: Fm442 Function Module (Accessory)

    230 V outputs. If the switches are not set to automatic, a message to this effect appears on the MEC2 programming unit and fault indicator illuminates. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 75: Fm445 Function Module (Logamatic 4126)

    – P Cylinder primary pump operational Display – S Cylinder secondary pump operational Display – Z DHW circulation pump operational Display Thermal disinfection Display Anti-scaling protection enabled, secondary pump cycles Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 76 The primary and secondary pumps and the DHW circulation pump are switched off. The mixer is switched to zero volt. The control functions continue to operate. LEDs indicate the current functions. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 77: Boiler Flue Gas Test

    The flue gas test is started at the boiler (see technical boiler documentation). During the flue gas test the MEC2 will show the display on the left. Flue g.test act. Boiler temp. 75°C Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 78: Troubleshooting

    Incorrect module slot 2 – Address Incorrect module slot A – Address Unknown module slot 1 – Address Unknown module slot 2 – Address Unknown module slot A – Address Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 79: Simple Troubleshooting

    – DHW is set to the wrong temperature. – Correct the DHW temperature setting. DHW cool – Switching program is incorrectly set up. – Re-program the switching program. Tab. 3 Simple troubleshooting Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 80: Troubleshooting

    Turn the rotary selectors on the BC10 base controller to "AUT" if manual mode is no longer required. Boiler x It goes cold. Switch the boiler to manual. No connection fault Notify your local heating contractor. Tab. 4 Troubleshooting Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 81: Operation In The Event Of A Fault

    If the electronics fail, the control unit can operate in emergency mode. In emergency mode, all pumps continue to run and the mixers are volt-free. Mixers can be manually set. In such cases, notify your local heating contractor. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 82: Manual Mode Logamatic 4121

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

  • Page 83: Manual Mode Logamatic 4126

    Fig. 26, [3]) at selector switch to manual Set boiler water thermostat on the boiler to the required temperature. Switch on "Flue gas test" switch on the wall mounted boiler. Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 84: Setup Report

    Heating circ. Assignment Heating circ. 0 Heating circ. 1 Heating circ. 2 Heating circ. 3 Heating circ. 4 Heating circ. 5 Heating circ. 6 Heating circ. 7 Heating circ. 8 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.

  • Page 85: Keyword Index

    ....20 Night mode ....9 Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 86 Notes Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 87 Notes Logamatic 4121, 4122 and 4126 - Subject to technical modifications.
  • Page 88 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...

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Logamatic 4122Logamatic 4126

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