Thision S PLUS - Central heating boiler Elco - Free user manual and instructions

USER MANUAL Thision S PLUS Elco

Operating Manual Authorized technicians only

TSp Tkol SdEin SdAus

2. Pumpenstufe Q21, Q22, Q23

Syst pump on heat gen lock Off

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Product description, Features, Functionality

Product description The LMS controller is a weather com- pensated digital controller that can con- trol two mixed heating zones, DHW preparation, do cascading and burner control. Additional functions can be activated. The controller calculates the required temperatures for the boiler and the hea- ting zones according to the outside temperature and controls DHW prepa- ration. With additional optimizing functi- onality optimal energy savings can be achieved. Features Heating zone control with the following functions: Operation mode Heating, DHW Setpoint adjustment for Heating, DHW Info button Manual control Chimney sweeper function Reset button Functionality Weather compensated heating zone controller for max. 2 mixed heating zones. DHW control with enable and setpoint adjustment. programmable time controlled cir- culation pump Illuminated display, multi lingual clear text for status and function indication Automatic summer/winter change over Preprogrammed time programmes for Heating and DHW Individual time program with peri- ods according to controller system configuration Holiday program for each heating zone Emission control / Chimney sweep- er with automatic return to normal operation Floor curing function Storage tank management Heat generation lock External setpoint via 0-10Vdc Solar DHW Heating functionality Programmable swimming pool con- trol Integrated Cascade functionality for multiple boiler installation Room temperature control via ac- cesory QAA 75 / 78 QAA 75 via 2-wire Bus QAA 78 via wireless connection Adjustment of radiator or underfloor heating zones with adjustment of time programs Automatic heat slope adaption pro- grammable Heat up optimization with quick start programmable Demand dependant cool down Adjustable minimum and maximum flow temperatures Pump post run Integrated hour counter anti-legionella function Boiler and system antifrost 2-wire bus connection for controller accessories LPB-Bus functionality via optional OCI 345Operating instructions

Controls 4 Confirmation (OK) (D) Return (ESC) (B) These buttons are used for program-ming in combination with the rotary knob. By pressing the ESC button it‘s possible to go back one level, changed values are not taken over by the controller. By pressing the OK button it‘s possible to arrive in the next level or confirm changed values. Manual mode (E) This button is used for switching the boiler into manual mode. In manual mo-de all pumps will run and the mixing valves are no longer controlled, the bur-ner setpoint is 60°C (indicated by span-ner symbol). On/off switch (A) Position 0: Boiler and connected electrical compo-nents are no powered. Frost protection is not secured. Position I The boiler and connected electrical components are powered and standby for operation. Operation mode DHW (M) For switching on the DHW operation (indication in display below DHW sym-bol) Operation mode heating zone(s) (I) For setting 4 different heating modes: Auto (clock): Automatic operation by time programm Comfort (sun): 24/7 heating in comfort mode Reduction (moon): 24/7 heating in re-duced mode Standby: heating off, frost protection activated. Display (L) Info mode (G) Display possibility of following info wit-hout influence on boiler control: temperatures, operation mode Heating / DHW, error code. Room temperature control (C) for changing room comfort tempe- rature for changing setting when program- ming. Deaeration mode (E) By pressing the manual mode button longer than 3 seconds, the automatic hydraulic deaeration is activated. During deaeration the system is put in standby mode

The pumps are switched on and off for several times. After deaeration, the boiler automatically returns to normal operation. Chimney sweeper mode (F) Used for combustion analysis. By pres-sing the button once again, or automati-cally after 15 minutes, the chimney swee-per mode will be deactivated (indicated by spanner symbol). Reset button (H) By shortly pressing the reset button a burner lockout can be cancelled.

Heating operation mode selection (Controller Stop mode when pressing > 3 sec.) Display Info button Confirm Manual mode (Deaeration mode when pressing > 3 sec.) Chimney sweeper mode Enduser - choose menu - confirm with OK button - choose parameter - confirm with OK button - change value + - with rotary knob - confirm with OK button - return to main menu with ESC button Commissioning Expert - choose user level - confirm with OK button - choose menu - confirm with OK button - choose parameter - confirm with OK button - change value + - with rotary knob - confirm with OK button - return to main menu with ESC button Programming Select (turn left/right) Quit menu Reset

Press OK (1x) Press INFO (4 sec.) Default mode (buttons) Heating to comfort setpoint Info level activated Heating to reduced setpoint Programming activated Heating for frost protection setpoint Heating temporarily switched off Process running – please wait Burner operating (only oil / gas boiler) Error messages Info level active Programming active Heating temporarily switched off ECO function

Holiday function active Reference to heating circuit Maintenance / special operation Parameter number6 Operating instructions

Set room temperature Zone 1 and zone 2 Actuate rotary knob left/right Turn rotary knob Confirm with OK button or wait 5 sec. or press Comfort setpoint with blinking temperature Blinking temperature in 0,5 °C steps from 10 to 30 °C Comfort setpoint saved Comfort setpoint cancelled - after 3 sec. Main menu appears

Set room temperature for zone 1 or zone 2 Zone 2 independent from zone 1 Actuate rotary knob left/right Confirm with OK button Actuate rotary knob left/right Confirm with OK button or wait 5 sec. or press Choose heating zone Heating zone is chosen Blinking temperature in 0,5 °C steps from 10 to 30 °C Comfort setpoint saved Comfort setpoint cancelled - after 3 sec. Main menu appears Switch on /off DHW ope- ration Press button DHW mode on / off (see indication below DHW symbol) - On: DHW mode by time programm - Off: no DHW operation - Safety functions activated

Change heating operation mode Factory setting

Press button 1x again Automatic mode on, with: - Heating by time programm - Temperature setpoint by heating programm - Safety functions activated - Summer/Winter automatic switching activated - ECO-functions activated (see indication below operation symbol) Continuous COMFORT heating on, with: - Heating without time programm by comfort setpoint - Safety functions activated Continuous REDUCED heating on, with: - Heating without time programm by reduced setpoint - Safety functions activated - Summer/Winter automatic switching activated - ECO-functions activated Safety mode on, with: - Heating off - Temperature by frost protection - Safety functions activated Controller Stop mode Press button > 3 sec. Press button > 3 sec. again 304: Controller Stopp mode insert setpoint after 3 sec. Main menu appears

Press button 1x INFO Segment displayed - Status Boiler - room temperature - room temperature minimum - Status DHW - room temperature maximum - Status zone 1 - outside temperature - Status zone 2 - outside temperature minimum - outside temperature maximum - Time / Date - DHW temperature 1 - Error indication - Boiler temperature - Maintenance indication - Flow temperature (Info display depends on configuration) Back to main menu; INFO Segment disappears Operation by manual setpoint Change factory setting boiler temperature Press button 1x

712 Reduced setpoint °C 4 Value from Line no. 710 714 Frost protection setpoint °C 4 Value from Line no. 712 720 Heating curve slope - 0.10 4.00 730 Summer/winter heating limit °C ---/8 30 HC2 (When activated) 1010 Comfort setpoint °C Value from Line no. 1012

1012 Reduced setpoint °C 4 Value from Line no. 1010 1014 Frost protection setpoint °C 4 Value from Line no. 1012 1020 Heating curve slope - 0.10 4.00 1030 Summer/winter heating limit °C ---/8 30 DHW 1610 Nominal setpoint °C Value from Line no. 1612

Menu Line no. Operating line Unit Min. Max Factory setting* Swimming pool 2055 Pool setpoint solar heating °C 8 80 2056 Pool sepoint boiler heating °C 8 80 Boiler 2214 Setpoint manual control °C 10 90 Fault 6705 SW Diagnose Code - -

Indication only *See manual boilerParameters professional installer

712 Reduced setpoint °C Value from Line no. 714 Value from Line no. 710 714 Frost protection setpoint °C

Value from Line no. 712 720 Heating curve slope -

Heating curve parallel dis- placement

Value from Line no. 741 741 Flow temp setpoint max °C Value from Line no. 740

742 Flow temp setpoint room stat °C Value from Line no. 740 Value from Line no. 741 746 Delay heat request s

800 Reduced setp increase start °C ---/30 10 801 Reduced setp increase end °C

Menu Line no. Operating line Unit Min. Max Factory setting* HC 1 850 Floor curing function - Off, Functional heating, Curing heating, Functional/Curing heating, Manually 851 Floor curing setp manually °C

855 Floor curing setp current °C - Indication only 856 Floor curing day current - - Indication only 861 Excess heat draw - Off, Heating mode, Always 870 With buffer - No, Yes 872 With prim contr/system pump - No, Yes 890 Flow setp readj speed ctrl - No, Yes 898 Operating level change over - Frost protection, Reduced, Comfort 900 Optg mode changeover - None, Protection, Reduced, Comfort, Automatic HC 2 (when activated) 1000 Operating mode HC2 - Protection, Automatic mode, Continuously comfort, Continuously reduced 1010 Comfort setpoint °C Value from Line no. 1012

1012 Reduced setpoint °C Value from Line no. 1014 Value from Line no. 1010 1014 Frost protection setpoint °C

Value from Line no. 1012 1020 Heating curve slope -

Heating curve parallel dis- placement

Value from Line no. 1041 1041 Flow temp setpoint max °C Value from Line no. 1040

1100 Reduced setp increase start °C ---/30 10 1101 Reduced setp increase end °C

1155 Floor curing setp current °C - - Indication only 1156 Floor curing day current - - - Indication only 1161 Excess heat draw - Off, Heating mode, Always 1170 With buffer - No, Yes 1172 With prim contr/system pump - No, Yes 1190 Flow setp readj speed ctrl - No, Yes 1198 Operating level change over - Frost protection, Reduced, Comfort 1200 Optg mode changeover - None, Protection, Reduced, Comfort, Automatic *See manual boilerParameters professional installer

Menu Line no. Operating line Unit Min. Max Factory setting* Domestic hot water 1600 Operating mode - Off, On, Eco 1610 Nominal setpoint °C 8 80 1612 Reduced setpoint °C 8 80 1620 Release - 24h/Day, Time programs HCs, Time program 4/DHW 1630 Charging priority - Absolute, Shifting, None, MC shifting PC absolute 1640 Legionella function - Off, Periodically, Fixed weekday

Menu Line no. Operating line Unit Min. Max Factory setting* Solar 3810 Temp diff on °C 0 40 3811 Temp diff off °C 0 40 3812 Charge temp min DHW °C 8 95 3813 Temp diff on buffer °C 0 40 3814 Temp diff off buffer °C 0 40 3815 Charging temp min buffer °C 8 95 3816 Temp diff on pool °C 0 40 3817 Temp diff off pool °C 0 40 3818 Charging temp min pool °C 8 95 3822 DHW storage tank - None, DHW storage tank, Buffer 3825 Charging time relative priority min 2 60 3826 Waiting time relative priority min 1 40

Menu Line no. Operating line Unit Min. Max Factory setting* Buffer 4720 Auto heat gen lock - None, With B4, With B4 and B42/B41 4721 Auto heat gen lock SD °C 0 20 4722 Temp diff buffer/HC °C -20 20 4724 Min st tank temp heat mode °C 8 95 4750 Charging temp max °C 8 95 4755 Recooling temp °C 8 95 4756 Recooling DHW/HCs - Off, On 4757 Recooling collector - Off, Summer, Always 4783 With solar integration - No, Yes 4790 Temp diff on return div °C 0 40 4791 Temp diff off return div °C 0 40 4795 Compar temp return div - With B4, With B41, With B42 4796 Optg action return diversion - Temperature decrease, Temp increase 4800 Partial charging setpoint °C 8 95 4810 Full charging - Off, Heating mode, Always 4811 Full charging temp min °C 8 80 4813 Full charging sensor - With B4, With B42/B41 DHW Storage tank 5010 Charging - Once/day, Several times/day 5020 Flow setpoint boost °C 0 30 5021 Transfer boost °C 0 30 5022 Type of charging - Recharging, Full charging, Full charging legio, Full charg 1st time day, Full charg 1st time day legio 5024 Switching diff °C 0 20 5030 Charging time limitation min 10 600 5040 Discharging protection - Off, Always, Automatic 5050 Charging temp max °C 8 95 5055 Recooling temp °C 8 95 5056 Recooling heat gen/HCs - Off, On 5057 Recooling collector - Off, Summer, Always 5060 El imm heater optg mode - Substitute, Summer, Always 5061 El immersion heater release - 24h/day, DHW release, Time program 4/DHW 5062 El immersion heater control - External thermostat, DHW sensor 5070 Automatic push - Off, On 5085 Excess heat draw - Off, On *See manual boilerParameters professional installer

Menu Line no. Operating line Unit Min. Max Factory setting* Configuration 5700 Presetting - 1 4 5710 Heating circuit 1 - Off, On 5715 Heating circuit 2 - Off, On 5730 DHW sensor - DHW sensor B3, Thermostat, DHW outlet sensor B38 5731 DHW controlling element - No charging request, Charging pump, Diverting valve 5734 Basic pos DHW div valve - Last request, Heating circuit, DHW 5736 DHW separate circuit - Off, On 5737 Optg action DHW div valve - Position On DHW, Position On HC 5738 Midposition DHW div valve - Off, On 5774 Ctrl boiler pump/DHW valve - All requests, Request HC1/DHW only 5840 Solar controlling element - Charging pump, Diverting valve 5841 External solar exchanger - Jointly, DHW storage tank, Buffer storage tank 5870 Combi storage tank - No, Yes 5890 Relay output QX1 0: None 1: Circulating pump Q4 2: El imm heater DHW K6 3: Collector pump Q5 4: Cons circuit pump VK1 Q15 5: Boiler pump Q1 6: Bypass pump Q12 7: Alarm output K10 8: 2nd pump speed HC1 Q21 9: 2nd pump speed HC2 Q22 10: 2nd pump speed HC3 Q23 11: Heat circuit pump HC3 Q20 12: Cons circuit pump VK2 Q18 13: System pump Q14 14: Heat gen shutoff valve Y4 15: Solid fuel boiler pump Q10 16: Time program 5 K13 17: Buffer return valve Y15 18: Solar pump ext exch K9 19: Solar ctrl elem buffer K8 20: Solar ctrl elem swi pool K18 22: Swimming pool pump Q19 25: Cascade pump Q25 26: St tank transfer pump Q11 27: DHW mixing pump Q35 28: DHW interm circ pump Q33 29: Heat request K27 30: Refrigeration request K28 33: Heat circuit pump HC1 Q2 34: Heat circuit pump HC2 Q6 35: DHW ctrl elem Q3 36: Instant heater ctrl elem Q34 38: Water filling K34 39: 2nd boiler pump speed Q27 40: Status output K35 41: Status information K36 42: Flue gas damper K37 43: Fan shutdown K38 5891 Relay output QX2 5892 DHW ctl elem Q3

SW diagnostic code 1 SW diagnostic code 2

Menu Line no. Operating line Unit Min. Max Factory setting* Diagnostics consumers

Precontroller mixing valve opens Y19 - Off, On Indication only

Precontroller mixing valve closes Y20 - Off, On - Heat generation lock Y4 - Off, On

Time switch program 5 relais K13 - Off, On - Return temp valve Y15 - Off, On - Heat demand K27 - Off, On

Instantaneous heater pump Q34 - Off, On

Forced prepurging on error - Off, On 9650 Chimney drying - Off, Temporarily, Permanently *See manual boilerInfo menu Manual control Chimney sweeper function Controller stop function 33 Display of information Various data can be displayed by pressing the info button. Possible info Depending on the type of unit, the configuration and operating state, some of the info lines listed below may not appear. Error message Maintenance message Room temperature Room temperature minimum Room temperature maximum Boiler temperature Outside temperature Outside temperature minimum Outside temperature maximum DHW temperature State of Boiler State of DHW State of HC1/2 Time / Date Telephone customer service Manual control When manual control is activated, the relays are no longer energized and deenergized according to the control status but are set to a predefined manual control status in accordance with their functions. Boiler, Heating circuit, Transport and DHW pump are switched ON, Buffer pump is OFF. The heating circuit mixer on the AVS75 controls to half of average value. Setpoint adjustment in manual operation After manual operation has been activated, a change to the basic display must be made where the service / special mode symbol appears. The setpoint for manual control can be adjusted in the Boiler menu on parame-ter 2214. Chimney sweep function To start the chimney sweep function, press the button for a moment (<3 seconds). This function produces the operating state required to make emission measurements (flue gas). Controller stop function To start the chimney sweep function, hold the operation mode button for >3 seconds). The controller stop function sets the burner to a fixed modulation. This function can be used to make emission measurements (flue gas). To deactivate the function hold the ope-ration mode button for >3 seconds.

Menu: time of day and date

Time of day and date The controller has a yearly clock with time of day, weekday and date. To en- sure the controller´s functionality, both the time of day and the date must be correctly set.

Summer- / wintertime changeover The dates set for the changeover from wintertime to summertime, and vice versa, ensure that on the first Sunday after the set date the time of day will change from 02:00 (wintertime) to 03:00 (summertime), and from 03:00 (summertime) to 02:00 (wintertime). Line no. Operating line Factory setting 1 Hours / minutes See manual boiler 2 Day / month 3 Year 5 Start of summer time 6 End of summer timeMenu: Operator section

Operation and display Language Available languages vary depending on country and version. Line no. Operating line Factory setting 20 Language See manual boiler 22 Info Temporarily Permanently 26 Operation lock 27 Programming lock 28 Direct adjustment 44 Operation HC2 Jointly with HC1 Independently 46 Operation HC3/P Jointly with HC1 Independently 70 Software Version Indication only Info Temporarily: After pressing the Info-button the Info display will appear. After 8 min. the basic display will reappear. Permanently: After activation the Info display will be shown permanently.

Operation lock When operation lock is activated, the following operating elements can no longer be adjusted: - Heating circuit operating mode - DHW operating mode - Room comfort setpoint (setting knob) - Presence button

Programming lock When programming lock is activated, parameter values can still be displayed, but can no longer be changed. - Temporary deactivation of the programming lock Within the programming level, the programming lock can temporarily be overriden. To do this, press the OK and ESC buttons simultaneously for 3 seconds. Temporary deactivation of the programming lock is maintained until programming is quit. - Constant deactivation of programming lock First, make the temporary deactivation, then go to operating line 27 Programming lock and deactivate the programming lock.

Direct adjustment Automatic storage: Altered values are stored without confirming with the OK-button. Storage with confirmation: Altered values are only stored after confirmation with the OK-button. Operation HC2 Depending on operation line 40, the action of operation (operating mode button or rotary knob) on room unit 1, on the operator unit or service unit can be defined for HC2. Jointly with HC1: Operation acts commonly on HC1 and

Independently: The action of operation is queried on the display as soon as the operating mode button is pressed or the rotary knob is operated. Operation HC3/P Depending on operation line 40, the action of operation (operating mode button or rotary knob) on room unit 1, on the operator unit or service unit can be defined for HC3/P. Jointly with HC1: Operation acts commonly on HC1 and

Independently: The action of operation is queried on the display as soon as the operating mode button is pressed or the rotary knob is operated Software version The display shows the current version of the operator/room unit.Menu: Time programs Menu: Holiday

For the heating circuits and for DHW heating, a number of switching programs are available. They are activated in Automatic operation and control the change of the temperature levels (and the associated setpoints) via the selected switching times. Entering the switching times The switching times can be set in a combined way, that is, either jointly for several days or in the form of separate times for individual days. When preselecting groups of days like for instance Mo…Fr and Sa…Su that use the same switching times, the setting of switching programs is simplified. Switching points Standard program Line no. Operating line Factory setting

HC1 HC2 3/HC3 4/DHW 5

500 520 540 560 600 Preselection Mo - Su Mo - Fr Sa - Su Mo - Su See manual boiler 501 521 541 561 601 1. phase on 502 522 542 562 602 1. phase off 503 523 543 563 603 2. phase on 504 524 544 564 604 2. phase off 505 525 545 565 605 3. phase on 506 526 546 566 606 3. phase off All time programs can be reset to their default setting. Each time program hat its own operating line to make this reset. Note: In that case, individual setting will be lost! Holiday Line no. Operating line Factory setting HC1 HC2 641 651 Preselection Period 1, 2, 3, 4, 5, 6, 7, 8 See manual boiler 642 652 start 643 653 end 648 658 Operating level Frost protection Reduced The holiday program allows switching the operating level of the HCs ac- cording to date. On the last day hea- ting is still deactivated. On the follo- wing day heating to comfort setpoint will commence according to the time program. The holiday program can only be used in automatic mode. Line no. Operating line Factory setting

For heating circuits, there are various functions available which can be individually set for each heating circuit. Operating mode HCs The operating modes of heating circuits are selected directly with the operating mode button. This setting is used to switch between different operating modes. Functionality corresponds to the operating mode selection via the operating mode button. Protection Continuous operation (24 hours) at the frost protection level. Switching pro- gram, occupancy button, holiday pro- gram, optimum start / stop control and ECO program have no impact. Control to room temperature frost pro- tection can be deactivated. This may become necessary if a room thermostat is used for activating the boiler pump. In that case, it is only the room thermo- stat that prevents the room temperature from dropping. It should be considered however that when the flow tempera- ture drops, the limit thermostat might cut out. The limit thermostat’s cut-out temperature is 0 °C. This means that cutout must be prevented by appropri- ate setting of the room thermostat. Automatic Automatic operation at the Comfort, reduced or frost protection level in accordance with the switching program, the occupancy button, the holiday program, optimum start / stop control and the ECO function.

Line no. Operating line Factory setting HC1 HC2 HC3 700 1000 Operating mode HC Protection Automatic Reduced Comfort See manual boiler

Reduced Continuous operation (24 hours) at the reduced level. Switching program, occupancy button, holiday program, optimum start / stop control and ECO program have no impact. The protective functions will remain active. Comfort Continuous operation (24 hours) at the Comfort level. Switching program, oc- cupancy button, holiday program, opti- mum start / stop control and ECO pro- gram have no impact. The protective functions will remain active.Menu: Heating circuits

For heating circuits, there are various functions available which can be individually set for each heating circuit. Room setpoint Room temperature The room temperature can be shifted according to different setpoints. These setpoints become active depending on the selected operating mode, thus producing different temperature levels in the rooms. The ranges of adjustable setpoints result from the interdependencies, as this is shown in the following diagram. Frost protection In protection mode, the room temperature is prevented from falling below a certain level. This means that the frost protection setpoint of the room temperature will be maintained. Line no. Operating line Factory setting HC1 HC2 HC3 710 1010 Comfort setpoint See manual boiler

712 1012 Reduced setpoint 1312 714 1014 Frost protection 1314 Heating curve The heating curve is used to generate the flow temperature setpoint, shich is used to maintain a certain flow temperature level depending on the prevailing weather conditions. The heating curve can be adjusted with a number of setting, thus matching heat output and room temperature to individual needs.

Heating curve slope As the heating curve slope is raised, the flow temperature increases quicker at lower outside temperature. In other words, if the room temperature is not correct at low outside temperatures but correct at higher outside temperatures, the heating curve slope requires readjustment. Increase adjustment: Raises the flow temperature, especially when outside temperatures are low. Decrease adjustment: Lowers the flow temperature, especially when outside temperatures are low. Line no. Operating line Factory setting HC1 HC2 HC3

720 - - Heating curve slope

See manual boiler - 1020 - Heating curve slope - - 1320 Heating curve slope 721 1021 1321 Heating curve displacement 726 1026 1326 Heating curve adaption TRKmax Comfort setpoint maximum TRK Comfort setpoint TRR Reduced setpoint TRF Frost protection setpoints

Heating curve displacement Parallel displacement of the heating curve is used to change the flow temperature evenly across the entire outside temperature range. In other words, if the room temperature is always too high or too low, a readjustment must be made with the help of the parallel displacement.

Heating curve adaption Adaption of the heating curve is used by the controller to automatically adapt the heating curve to the prevailing conditions. In that case, a readjustment of heating curve slope and parallel displacement is not required. It can only be switched on or off. To assure this function, following must be observed:

• A room sensor must be connected

• The Room influence setting must be selected between 1 and 99

• There should be no thermostatic radi- ator valves in the reference room (mounting location of room sensor) (if such valves are present, they must be set to their fully open position). Line no. Meaning 8700 TA Readjustm outside TRw Room temp setpoint TV Flow tempMenu: Heating circuits

Line no. Operating line Factory setting HC1 HC2 HC3 730 1030 Summer/winter heating limit See manual boiler

732 1032 24-hour heating limit 1332 733 1033 Ext’n 24-hour heating limit 1333 ECO-Function Summer/winter heating limit The summer / winter heating limit is used to switch the heating on and off in the course of the year, depending on temperature conditions. In automatic mode, switching on / off takes place automatically, so there is not need for the user to do this manually. By chang- ing the setting, the respective periods of time will be shortened or extended. Increase: Winter operation will start earlier. Summer operation will start later. Decrease: Winter operation will start later. Summer operation will start earlier.

• The function is not active in operating mode Comfort

• The display shows ECO

• To incorporate the building´s thermal dynamics, the outside temperature is attenuated Legend SWHG Summer / winter heating limit t Days T Temperature TAged Attenuated outside temperature 24-hour heating limit The 24-hour heating limit is used to switch the heating on and off in the course of the day, depending on the outside temperature. This function is used primarily during spring and au- tumn to respond to short-term tempera- ture variations. By changing the value entered, the respective heating periods will be short- ened or extended. Increase: Heating mode will start earlier. Changeover to ECO later. Decrease: Heating mode will start later. Changeover to ECO earlier.

• The function is not active in operating mode Continuously comfort tempera- ture.

• The display shows ECO

• To give consideration to the building´s thermal dynamics, the outside tempera- ture will be attenuated. Setting line E.g. Comfort setpoint (TRw) 22°C 24-hour heating limit (THG) -3°C Changeover temperature (TRw-THG) heating OFF = 19°C Switching differential (fixed) -1°C Changeover temperature heating ON = 18°C Example Ext’n 24-hour heating limit The 24-hour heating limit is extended by giving consideration to the composite outside temperature when the heating is switched on. Alternatively, the heating can be switched on again only dependent on the current outside temperature.

The 24-hour heating limit applies only dependent on the current outside temperature. Yes The 24-hour heating limit applies as described under 24-hour heating limit, depending on both the current and the composite outside temperature. .Menu: Heating circuits 44 Flow temp setpoint min/ max Using this limitation, a temperature range for the flow temperature setpoint can be defined. If the flow temperature setpoint demanded by the heating cir-cuit reaches the relevant limit and the heat request increases or decreases, the flow temperature setpoint will be maintained at the maximum or mini-mum limit. Line no. Operating line Factory setting HC1 HC2 HC3 740 1040 1340 Flow temp setpoint min See manual boiler 741 - - Flow temp setpoint max HC1 - 1041 - Flow temp setpoint max HC2 - - 1341 Flow temp setpoint max HC3 742 - - Flow temp setpoint room stat HC1 - 1042 - Flow temp setpoint room stat HC2 - - 1342 Flow temp setpoint room stat HC3 746 1046 1346 Delay heat request Legend TVw Current flow temperature setpoint TVmax Flow temperature setpoint maximum TVmin Flow temperature setpoint minimum Room influence Type of compensation When a room temperature sensor is used, there is a choice of 3 different types of compensation.

Pure weather compensation The flow temperature is calculated via the heating curve, depending on the composite outside temperature. This type of compensation calls for a correct adjustment of the heating curve since in this case the control gives no consideration to the room temperature. Weather compensation with room influence Deviations of the actual room tempera-ture from the setpoint are acquired and taken into account when controlling the temperature. Heat gains can thus be considered, facilitating more accurate room temperature control. The authority of deviation is set as a percentage figure. The better the reference room (correct room temperature, correct mounting location, etc.) the higher the value can be set. Example: Approx. 60 % Good reference room conditions Approx. 20 % Unfavorable reference room Line no. Operating line Factory setting HC1 HC2 HC3 750 1050 Room influence See manual boiler 1350 Setting Type of compensation - - - % Pure weather compensation * 1…99 % Weather compensation with room influence * 100 % Pure room compensation

Pure room compensation The flow temperature is controlled depending on the room temperature setpoint, the current room temperature and the progression of the room temperature. For example, a slight increase of the room temperature causes an immediate drop of the following temperature. To activate the function, following must be considered: • A room sensor must be connected • Room influence must be set to 100 % • There should be no thermostatic radiator valves in the refernce room (mounting location of the room sensor) (if such valves are present, they must be set to their fully open position) * Outside sensor required.

To activate the function, following must be considered: • A room sensor must be connected • Room influence must be set to a value between 1 and 99 % • There should be no thermostatic radi-ator valves in the reference room (mounting location of the room sensor) (if such valves are present, they must be set to their fully open position).Menu: Heating circuits 45 Room temperature control and limitation With the room temperature limitation function, the heating circuit pump can be disabled if the room temperature exceeds the current room temperature setpoint by more than the preset differential. The room temperature limitation does not work in the case of pure weather compensation. . Line no. Operating line Factory setting HC1 HC2 HC3 760 1060 Room temp limitation See manual boiler 1360 P Pump SDR Room SD t Time TRw Room temp setpoint TRx Actual value room temp Boost heating Boost heating is used to reach the new setpoint more quickly when switching from the reduced setpoint to the comfort setpoint, thus reducing the heat-up time. During boost heating, the room temperature setpoint is raised by the value set here. A higher setting leads to shorter heat-up times, a lower setting to longer heat-times. Boost heating is possible with or without room sensor. Line no. Operating line Factory setting HC1 HC2 HC3

1070 Boost heating See manual boiler 1370 DTRSA Increase room temperature setpoint TRw Room temperature setpoint TRx Actual value room temperature Quick setback During quick setback, the heating circuit pump is deactivated and, in the case of mixing valve circuits, the mixing valve is fully closed. Function with room sensor: • When using the room sensor, the func-tion keeps the heating switched off until the room temperature has dropped to the level of the reduced setpoint or the frost level. When the room temperature has fallen to the reduced level or the frost level, the heating circuit pump will be activated and the mixing valve will be released.

• Function without room sensor: Quick setback switches the heating off for a certain period of time, depending on the outside temperature and the building time constant.

• Quick setback is possible with or without a room sensor. Line no. Operating line Factory setting HC1 HC2 HC3 780 1080 Quick setback Off Down to reduced setpoint Down to frost prot setpoint See manual boiler 1380 Example: Duration of quick setback when comfort setpoint minus reduced setpoint = 2 °C (e.g. comfort setpoint = 20 °C and reduced setpoint = 18 °C) Outside temp composite Time constant building (Line no. 6110)

15 °C 0 3.1 7.7 15.3 23 30.6 76.6 10 °C 0 1.3 3.3 6.7 10 13.4 33.5 5 °C 0 0.9 2.1 4.3 6.4 8.6 21.5 0 °C Frost protection Duration of quick setback in hours When differential between Comfort setpoint and reduced setpoint is f.e. 4°C, the default values in the table will be doubled.Menu: Heating circuits

Line no. Operating line Factory setting HC1 HC2 HC3 790 1090 1390 Optimum start control max See manual boiler 791 1091 1391 Optimum stop control max Optimum start / stop control Optimum start control max The change from one temperature level to the other is optimized in a way that the comfort setpoint is reached at the relevant switching time. Optimum stop control max The change from one temperature level to the other is optimized in a way that the comfort setpoint minus ¼ °C is reached at the relevant switching time.

• Optimum start / stop control is possible with or without room sensor. TRw Room temperature setpoint TRx Actual value room temperature Xoff Switch-off time shifted forward in time Xon Switch-on time shifted forward in time ZSP Time switch program Raising the reduced setpoint The function is used primarily in connection with heating systems with only little spare capacity (e.g. low- energy houses). In such cases, the heating up time would be too long at low outside tempe- ratures. When the reduced setpoint is raised, the rooms are prevented from cooling down to too low levels, thus shortening the heating up time when changing to the comfort setpoint. Line no. Operating line Factory setting HC1 HC2 HC3 800 1100 1400 Reduced setp increase start See manual boiler 801 1101 1401 Reduced setp increase end TAgem Composite outside temperature TRK Comfort cooling setpoint TRR Reduced room temperature setpoint TRwA1 Reduced setpoint increase start TRwA2 Reduced setpoint increase end Overtemperature protection Overtemperature protection for pump heating circuit In the case of heating plant with pump heating cicuits, the flow temperature of the heating circuit can be higher than the flow temperature demanded by the heating curve, due to requests from other heat consumers (mixing heating circuit, DHW charging, external heat demand), or a parameterized minimum boiler temperature. Line no. Operating line Factory setting HC1 HC2 HC3 820 1120 Overtemperature protection for Pump heating circuit Off

As a result of this too high flow temperature, the pump heating circuit would assume excessive temperatures. The function overtemperature protection for pump heating circuits ensures that the energy supply for pump heating circuits corresponds to the demand from the heating curve by activating / deactivating the pump. The cycling period is fixed at 10 min. This period of time is broken down according to a time ration.The pump’s running time is set to a minimum of 3 minutes. The pump’s off time is set to a minimum of 2 minutes.Menu: Heating circuits

Mixing valve control Mixing valve boost To ensure proper mixing valve flow temperature control, the flow tempera- ture must be higher than the demanded setpoint of the mixing valve flow tem- perature. The value set here is added to the request.

The selection of the type of actuator determines the control behavior for the type of mixing valve actuator used.

2-positition The controller drives the actuator with only one relay output. When the output delivers a signal, the valve opens. If the signal is missing, the valve will automatically close (thermally or mechanically). If the flow temperature lies more than half the switching differential below the setpoint, relay “Mixing valve opening” will be energized and remains energized until the flow temperature exceeds the setpoint by half the switching differential.

3-position The controller drives the actuator with 2 relay outputs. One of the outputs is used for opening the valve and one for closing the valve. If none of the relays is energized, the actuator maintains its position. Control is accomplished with a PID controller, whereby XP and TN can be parameterized. The actuator running time can also be set. The controller’s neutral zone is +/- 1K. In the case of difficult controlled systems, the control parameters can be matched to the system.

Switching differential 2-pos For the 2-position actuator, the 2- postion switching differential must also be adapted. This is not required when using a 3-position actuator.

Actuator running time Setting the running time of the actuator used with the mixing valve.

Mixing valve Xp The mixing valve´s P-band can be adjusted, thereby matching the control behavior of the vale´s actuator to that of the plant (controlled system). Xp influences the controller´s P-behavior.

Mixing valve Tn The mixing valve´s integral action time can be adjusted, thereby matching the control behavior of the vale´s actuator to that of the plant (controlled system). Tn influences the controller´s I-behavior. Line no. Operating line Factory setting

Floor curing function The floor curing function ensures con- trolled drying of the floor. It controls the flow temperature according to a tem- perature profile. Drying of the floor is ensured via the floor heating system and the mixing or pump heating circuit. Floor curing function Off Function is deactivated. Functional heating The first part of the temperature profile is automatically completed. Curing heating The second part of the temperature profile is traversed automatically. Functional/curing heating The entire temperature profile (first and second part) is passed automatically. Manually It is not a temperature profile that is completed, but the floor setpoint is con- trolled manually.

Floor curing setp manually The flow temperature setpoint for the manual floor-curing function can be set separately for each heating circuit. Floor curing setp current Shows the current flow temperature setpoint while the floor-curing function is in progress. Floor curing day current Shows the current weekday of the floor- curing function in progress. Line no. Operating line Factory setting HC1 HC2 HC3 850 1150 1450 Floor curing function Off Functional heating Curing heating Functional/curing heating Manually See manual boiler 851 1151 1451 Floor curing setp manually 855 1155 1455 Floor curing setp current 856 1156 1456 Floor curing day current Bh Floor curing heating Fh Functional heating X Start day

• The function can be aborted by choosing Off

• Maximum limitation of the flow temperature remains active

• Observe the relevant standards and regulations of the floor manufacturer

• Proper functioning is ensured only when the plant is correctly installed (hydraulic system, electrical installation, setting)! If not observed, the floor might get damagedMenu: Heating circuits

Excess heat draw Excess heat draw can be triggered by the following functions: - Inputs Hx - Storage tank recooling - Solit fuel boiler excess heat draw When dissipation of excess heat is activated, it can be draw by space heating. This can be adjusted separately for each heating circuit. Off Excess heat draw is deactivated. Heating mode Excess heat is drawn only when the controller operates in heating mode. Always Excess heat is drawn in all operating modes. Line no. Operating line Factory setting HC1 HC2 HC3 861 1161 Excess heat draw Off Heating mode always See manual boiler

With buffer If there is a buffer storage tank, specify whether the heating circuit can draw heat from it. When using alternative heat sources, the buffer storage tak temperature is used as a control criteria for the release of additional heat sources.

With prim/contr system pump Specify whether the heating circuit receives its heat via the primary controller or withthe help of the system pump (depending on the type of plant).

Line no. Operating line Factory setting HC1 HC2 HC3 870 1170 1470 With buffer

Yes See manual boiler 872 1172 1472 With prim/contr system pump

Flow setp readj speed ctrl Here, it can be determined whether or not the calculated readjustment of the flow temperature setpoint shall be included in the temperature request. Line no. Operating line Factory setting

Yes See manual boiler

Remote control Operating level changeover The operating level to which the heat- ing circuits shall be switched can be selected via an external time switch and inputs Hx. Optg mode changeover The heating circuit can be forced to adopt a selected mode via the H input by operating a contact. The operating mode required when the changeover is made can be defined in the “Operating mode changeover” parameters for each heating circuit. In that case, selection of the operating modes on the controller is locked.

Operating mode The DHW operating mode is operated directly via operating button. Off Continuous operation, the setpoint being the DHW frost protection setpoint (5 °C).

DHW charging takes place automatically, the setpoint being the nominal DHW setpoint or the reduced DHW setpoint based on the selected kind of DHW release.

Line no. Operating line Factory setting 1600 Operating mode Off

See manual boiler Setpoints The DHW setpoint acting on the control is selected based on the current opera- ting level which includes impact of the operating mode, the release (possibly the switching program), the DHW push and the0 legionella function. Nominal setpoint Backup temperature inside the release. Reduced setpoint Backup temperature outside the relea- se. Line no. Operating line Factory setting 1610 Nominal setpoint See manual boiler 1612 Reduced setpoint DHWmax DHW nominal setpoint maximum DHWN DHW nominal setpoint DHWR DHW reduced setpointMenu: DHW 52 Release

24h/Day When this setting is used, DHW heating is continuously released as long as it is switched on. The DHW setpoint is al-ways the nominal setpoint, unless the legionella function has been activated. Line no. Operating line Factory setting 1620 Release 24h/day Time programs HCs Time program 4/D HW See manual boiler

2371Z18 Time programs HCs When this setting is used, DHW heating is released during the occupancy times of the connected heating circuits. If at least one of the heating circuits is at the Comfort level, DHW heating will also be released. If all heating circuits are at the reduced level or in protective mode, the DHW level will also be set to reduced.

2377Z16 Time program 4/DHW When using this setting, a specific time program is available for DHW heating. For every weekday, a time program with a maximum of three on phases can be set. During the release time, the nominal DHW setpoint applies, outside the release time, the reduced DHW setpoint.If the legionella function is pending, it will be performed when DHW heating is released for the first time in the morning. Setting “Once / several times per day” has no impact. If DHW heating is switched off, the frost protection setpoint will apply.

2373Z24 example example example Charging priority When both space heating and DHW heating call for heat, the DHW priority function ensures that while DHW charging is in progress, the boiler’s capacity is used primarily for DHW hea-ting. With diverting valves, the function is automatically deactivated. Absolute The mixing and pump heating circuits stay locked until DHW heating is completed. Line no. Operating line Factory setting 1630 Charging priority Absolute Shifting None MC shifting, PC absolute See manual boiler Shifting If the capacity of the heat source is not sufficient, the mixing and pump heating circuits will be restricted until DHW is heated up. None DHW heating and space heating take place at the same time. In the case of tightly sized boilers and mixing heating circuits, the DHW setpoint may not be reached if space heating demands considerable amounts of heat. MC shifting, PC absolute The pump heating circuits stay locked until the DHW storage tank is heated up. If the capacity of the heat source is not sufficient, the mixing heating circuits will be restricted also.Menu: DHW Legionella function Off The function is deactivated. Periodically The legionella function is repeated ac- cording to the interval set (operating line 1641). The legionella setpoint is attained via a solar plant, independent of the period of time set, the period of time will be newly started. This means that the heat source is switched on only if the solar plant could not deliver the required “Legionella function setpoint” within the adjusted period of time. Fixed weekday The legionella function can be activated on a fixed weekday (operating line 1642). When using this setting, heating up to the legionella setpoint takes place on the selected weekday, independent of previous storage tank temperatures. This setting is intended primarily for plant with no solar integration.

Legionella funct periodically Setting “Legionella funct periodically” is used to select after how many week- days the function shall be activated again. (This setting is active only if pa- rameter “Legionella function” is set to “Periodically”).

Legionella funct weekday Parameter “Legionella funct weekday” is used to select on which weekday the function shall be performed. The func- tion is carried out on the selected week- day, independent of the availability of alternative energy.

Legionella function time The legionella function is started at the time set. The DHW setpoint is raised to the adjusted legionella setpoint and DHW charging is started. If no time is parameterized, the legio- nella function is started on the respecti- ve day together with the first normal release of DHW heating. If no release of DHW heating is scheduled for that day (continuously reduced), the legio- nella function will be performed at 24:00. Line no. Operating line Factory setting 1640 Legionella function Off Periodically Fixed weekday See manual boiler 1641 Legionella funct periodically 1642 Legionella funct weekday Mo - Su 1644 Legionella function time 1645 Legionella funct setpoint 1646 Legionella funct duration 1647 Legionella funct. circ. pump Off

If DHW heating is switched off (DHW operating mode button = off or holi- days), the legionella function will be made up for as soon as DHW heating is switched on again (DHW operating mode button = on or end of holiday period).

Legionella funct setpoint The higher the temperature level of the storage tank, the shorter the required dwelling time at that level.

Legionella funct duration The demanded “Legionella function setpoint” must be continuously maintai- ned during the dwelling time set. If the storage tank temperature (in the case of 2 sensors, the temperature acquired by the “colder” sensor) exceeds the “Legionella function setpoint” minus 1 K, the “Legionella function setpoint” is considered fulfilled and the “Dwelling time” timer elapses. If the storage tank temperature drops below the de- manded “Legionella function setpoint” by more than the switching differential plus 2 K before the dwelling time has elapsed, the dwelling time must be ful- filled again. If no dwelling time is set, the “Legionella” function is performed the moment the “Legionella function setpoint” is reached. If the “Legionella” function cannot be performed within a 48-hour period, an error message will be delivered.

Legionella funct circ pump When the function is activated, the cir- culating pump is switched on while the “Legionella” function is performed as soon as the storage tank temperature (in the case of 2 sensors the tempera- ture acquired by the “colder” sensor) lies above the “Legionella function set- point” minus 1 K. The pump runs during the dwelling time set. If the storage tank temperature falls below the de- manded “Legionella function setpoint” by more than the DHW switching diffe- rential plus 2 K, the circulating pump will prematurely be deactivated. During the time the legionella function is performed, the DHW circulating pump can be activated. 53Menu: DHW Circulating pump A multifunctional relay is used for con- trolling the circulating pump. It must be appropriately parameterized. Circulating pump release The circulating pump is switched on during the release time (see below), provided DHW heating is switched on and at least one of the connected heating circuits is not in holiday mode. If the DHW operating mode is “Off”, or if all connected heating circuits are in holiday mode, the circulating pump remains deactivated, independent of the parameterized release. Release of the circulating pump can take place in different ways: Time program 3/HCP The circulating pump is released according to time program 3 / HCP. DHW release With this parameterization, the circulating pump is released when DHW heating is released also. Trinkwasser Freigabe Bei dieser Parametrierung ist Zirkulationspumpe freigegeben wenn auch die Trinkwasserbereitung freigegeben ist. Time program 4/DHW The circulating pump is released according to time program 4 / DHW. Time program 5 The circulating pump is released according to time program 5. Line no. Operating line Factory setting 1660 Circulating pump release Time program 3/HCP DHW release Time program 4/DHW Time program 5 See manual boiler 1661 Circulating pump cycling Off

Circulating pump cycling When the function is activated, the circulating pump is switched on for 10 minutes whithin the release time and then switched off again for 20 minutes.

Circulating setpoint If a sensor is installed in the DHW dis- tribution pipe, the controller will monitor its actual value during the time the le- gionella function is performed. The ad- justed setpoint must be maintained at the sensor during the adjusted Dwelling time. The circulating setpoint is limited at the top at the nominal setpoint. Remote control Optg mode changeover In the case of external changeover via inputs Hx, the operating mode where changeover is to take place can be selected. None Function deactivated. No changeover of operating mode. Off Operating mode is changed to Off. Line no. Operating line Factory setting 1680 Optg mode changeover None Off

Operating mode is changed to On.Menu: Consumer circuit

Consumer circuit Flow temp setp cons request Adjustment of the flow temperature setpoint that becomes active when the- re is a heat request from the consumer circuit.

DHW charging priority With this setting, the connected consumer circuit pump can be excluded from or included in the impact resulting from DWH charging priority. This means that in the caseof ventilation applications, for instance, constant delivery of heat can be ensured without any impact from DHW charging priority. Excess heat draw If excess heat draw is activated, it can be delivered to the consumer circuits. This can be selected separately for each consumer circuit. Off Function is deactivated.

Function is activated.

With buffer If a buffer storage tank is used, it is to be entered whether the consumer cir- cuit is allowed to draw heat from the pump storage tank. When employing alternative heat sources, the buffer storage tank temperature is used as a control criterion for the release of additi- onal heat sources. Off Function is deactivated.

Function is activated.

Yes With prim contr/system pump The setting made here defines whether the consumer circuit shall receive heat via the primary controller or the system pump (depending on the type of plant). Off Function is deactivated.

Function is activated.Menu: Swimming pool

Line no. Operating line Factory setting 2055 Setpoint solar heating See manual boiler

Setpoint source heating When swimming pool control is acti- vated, the setpoints for solar heating or for conventional heating can be ad- justed. Setpoint solar heating When making use of solar energy, the swimming pool is heated to this setpoint. The collector overtemperature protection function can put the collector pump back into operation until the maximum swimming pool temperature is reached. Setpoint source heating When using other heat sources, the swimming pool is heated to this set- point.

Charging priority solar Priority 1 Swimming pool charging has the first priority. Priority 2 Swimming pool charging has the se- cond priority (after the buffer storage tank and the DHW storage tank). Priority 3 Swimming pool charging is effected without priority (after the buffer storage tank, the DHW storage tank, the heating circuits, and the consumer circuits).

Swimming pool temp max When the swimming pool temperature reaches the temperature limit set here, the collector pump will be deactivated. It is released again only when the swimming pool temperature drops 1 °C below the maximum limit.

With solar integration The setting made here decides whether the swimming pool can be heated by solar energy. Line no. Operating line Factory setting 2065 Charging priority solar Priority 1 Priority 2 Priority 3 See manual boiler 2080 With solar integration

Yes Line no. Operating line Factory setting 2070 Swimming pool temp See manual boiler 2080 With solar integration

YesPrimary controller / system pump Line no. Operating line Factory setting 2110 Flow temp setpoint min See manual boiler 2111 Flow temp setpoint max Line no. Operating line Factory setting 2121 Syst pump on heat gen lock Off

Syst pump on heat gen lock This parameter can be used to select whether or not the system pump shall be locked when heat generation lock is active. Off System pump not locked.

System pump locked when heat generation lock is active. Limitations of the flow temperature setpoint Flow temp setpoint min/ max These limitations can be used to define a range for the flow temperature setpoint during heating mode. TVmax Flow temperature setpoint, maximum TVmin Flow temperature setpoint, minimum TVw Current flow temperature setpointPrimary controller / system pump Mixing valve control Mixing valve boost To ensure accurate control, the flow temperature delivered by the boiler must be higher than the demanded flow temperature setpoint after the mixing valve. The controller therefore genera- tes the boiler temperature setpoint ba- sed on the mixing valve boost set here and the current flow temperature set- point.

Actuator type The selection of the type of actuator determines the control behavior for the type of mixing valve actuator used. 2-position The controller drives the actuator via one relay output only. When a control signal is delivered, the valve opens. When no control signal is present, the valve closes automatically (thermal action or mechanically). The control employs a 2-position con- troller with an adjustable switching dif- ferential. If the flow temperature lies more than half the switching differential below the setpoint, relay Mixing valve OPEN is energized to remain energized until the flow temperature reaches a level half the switching differential above the setpoint. 3-position The controller drives the actuator via 2 relay outputs. One of the outputs is used for opening the valve, one for closing the valve. If none of the relays is energized, the actuator maintains its present position. Line no. Operating line Factory setting 2150 Primary contr/system pump Before the buffer After the buffer See manual boiler Line no. Operating line Factory setting 2130 Mixing valve boost See manual boiler 2132 Actuator type 2-position 3-position 2133 Switching differential 2-pos 2134 Actuator running time 2135 Mixing valve Xp 2136 Mixing valve Tn

The control employs a PID controller whose proportional band (Xp) and integral action time (Tn) can be parameterized. The actuator running time can also be adjusted. The controller’s neutral zone is +/- 1 K. The control parameters can be matched to the requirements of difficult controlled systems.

Switching differential 2-pos For a 2-position actuator, the 2-position switching differential must also be dap- ted.This is not required when using a 3- position actuator.

Actuator running time Setting the running time of the actuator used with the mixing valve. Mixing valve Xp By setting the right proportional band, the control action of the mixing valve’s actuator is matched to the behavior of the plant (controlled system). Xp influences the controller’s P-control action.

Mixing valve Tn By setting the right integral action time, the control action of the mixing valve's actuator is matched to the behavior of the plant (controlled system). Tn influences the controller’s I-control action. Primary contr/system pump If the plant is equipped with a buffer storage tan, it must be stated here whe- ther – hydraulically speaking – the pri- mary controller or the system pump is located before or after the buffer stora- ge tank.Menu: Boiler

Line no. Operating line Factory setting

Setpoint min See manual boiler 2212 Setpoint max 2214 Setpoint manual control Setpoints The controlled boiler temperature set- point can be limited with Setpoint min und -max. These limitations can be considered to be a protective function for the boiler. In normal operation, mi- minum limitation of the boiler tempera- ture is the lower limit value for the controlled boiler temperature setpoint, depending on the boiler´s operating mode. In normal operation, maximum limitation of the boiler temperature is the upper limit value for the controlled boiler temperature setpoint and setpoint for the electronic limit thermostat (TR). Setpoint manual control In manual control, the common flow temperature setpoint can be set to a fixed value. Line no. Operating line Factory setting

Modulating Xp / P-band Xp DHW P-band Xp defines the controller’s gain. A small Xp leads to higher control of the burner fan without changing the control difference ΔT = (Tsoll minus Tist). Int action time Tn DHW The integral action time Tn determines the controller’s rate of response when correcting proportional offsets. A shor- ter Tn leads to faster correcting actions. Derivative action time Tv DHW The derivative action time Tv deter- mines the extent of after-effect of a spontaneous change of control diffe- rence. A short Tv only has a short-time impact on the manipulated variable. Line no. Operating line Factory setting 2241 Burner running time min See manual boiler 2243 Burner off time min 2245 SD burner off time Boiler / burner control Burner running time min Here, a period of time after burner star- tup is defined during which the off time differential is increased by 50%. This means that with similar heating up pro- cesses, the 2-position controller swit- ches off later. But this parameter set- ting does not guarantee that the burner remains in operation for the paramete- rized period of time.

Burner off time min The minimum boiler off time takes effect exclusively between successive heat requests. It locks the boiler for an adjustable period of time and is started after regular shutdown or if the tempe- rature limiter cuts out in response to heat requests. New startups initiated by the 2-position controller due to heat requests are made only when this peri- od of time has elapsed. SD burner off time If SD burner off time is exceeded, the minimum off time will be aborted.Menu: Boiler

- Control of the bypass pump - Control of a modulating valve Line no. Operating line Factory setting 2250 Pump overrun time See manual boiler 2253 Pump overr time after DHW Overtemperature protection Pump overrun time Pump overrun time after heating mode and external requests.

Pump overr time after DHW Pump overrun time after DHW heating. Line no. Operating line Factory setting 2270 Return setpoint min See manual boiler Return setpoint min The required minimum return temperature setpoint can be parameterized. If the boiler return temperature falls below the return temperature setpoint, maintained boiler return temperature becomes active. In connection with the return temperature, the following functions can be provided: - Locking signal acting on the consumers Heating and DHW mode All space heating and DHW heating requests are locked. Line no. Operating line Factory setting 2301 Boiler pump on heat gen lock See manual boiler 2305 Impact heat generation lock Heating mode only Heating and DHW mode Boiler pump Boiler pump on heat gen lock This parameter is used to determine whether heat generation lock shall also act on the boiler pump. Off Boiler pump locked when heat generati- on lock is active.

Boiler pump not locked when heat generation lock is active.

Impact heat generation lock This parameter is used to select whether heat generation lock shall only be active in the case of heat requests from the heating circuit, or in the case of DHW heating requests also. Heating mode only Only space heating requests are locked. DHW heating requests continue to be met.Menu: Boiler

Line no. Operating line Factory setting

Temp differential max See manual boiler

Temp differential nominal Temp differential nominal Temp differential max The "Maximum boiler differential" func- tion is used to monitor the speed con- trol of the boiler pump.When the boiler flow/return differential reaches the pre- set value, the boiler pump speed is not increased further. If the actual differen- tial exceeds the preset value, the speed is reduced. The function can be deactivated with setting – – – . Line no. Operating line Factory setting

Pump modulation None Demand Boiler setpoint Temp differential nominal Burner output See manual boiler

Pump setpoint reduction

Output at pump speed min

Output at pump speed max Speed control Pump modulation A number of functions are available for the modulating boiler pump. None Function is switched-off. Demand Do not use this function. Boiler setpoint Do not use this function. Temp differential nominal The LMS... continues to control the boiler’s output such that the boiler temperature setpoint is maintained. Pump speed control controls the boiler pump’s speed in a way that the parameterized nominal temperature differential of boiler return and boiler flow is maintained. If the effective differential is greater than the nominal differential, the pump’s speed is increased, otherwise it is decreased. The pump’s speed is limited by the parameterized minimum and maximum speed. Burner output This function can be used with both single-boiler plants and cascades, with or without pressureless header. If the burner operates at low output, the boiler pump shall also be operated at low speed. In the case of high outputs, the boiler pump shall run at high speed.

The speed of the boiler pump is calculated based on the current boiler output. Up to a selectable boiler output (operating line 2334) the boiler pump operates at minimum speed. And above a selectable boiler output (operating line 2335), the boiler pump operates at maximum speed. Between minimum output (Ynmin) and maximum output (Ynmax), the pump speed is continuously increased.

Starting speed At start up the pump will start with the programmed starting speed. After mo- dulation release the pump will be con- trolled according to the chosen function. Pump speed min Minimum speed for the pump. Pump speed max Maximum speed for the pump. Temp differential nominal In connection with a modulating heating circuit pump, the boiler maintains a nominal temperature differential as long as the pump is not operated at the maximum permissible speed. Speed Xp Speed Tn Speed Tv PID settings for function Boiler setpoint at parameter 2320. Pump setpoint reduction This parameter is used to set the setpoint reduction for the boiler pump’s speed control. This setpoint reduction is only active in connection with Pump modulation and Boiler setpoint (operating line 2320).

Output at pump speed min Output at pump speed max If option Burner output is selected on operating line number 2320, the boiler pump is operated at minimum speed until the burner output set on operating line number 2334 is reached, and at maximum speed from the burner output set on operating line number 2335. If the burner’s output lies between these 2 values, the boiler pump’s speed is calculated through linear conversion.Menu: Boiler

Line no. Operating line Factory setting 2330 Output nominal See manual boiler 2331 Output basic stage Output data Output nominal Output basic stage These setting are required when several boilers with different outputs are operated in a cascade.

Line no. Operating line Factory setting 2441 Fan speed heating max See manual boiler 2442 Fan speed full charging max 2444 Fan speed DHW max 2445 Fan shutdown heating mode Off

Fan speed full charging max This parameter can be used to limit the maximum output during full charging.

Fan shutdown heating mode This function is used to switch off the fan’s power supply. Power supply to the fan is released as soon as the fan’s PWM control is active or whenever there is a request for DHW. Fan shutdown is delayed and takes place after PWM control is switched off, or after there is no more demand for DHW. The delay time can be set via parameter Fan shutdown delay. During the period of time a request for DHW is active, the fan’s power supply remains released also when PWM control is inactive. Parameter Fan shutdown with heat request (fan release configuration) can be used to select whether the fan’s power supply shall be released also when there is a request for DHW, independent of PWM control. Off Function is deactivated.

Function is activated. Fan shutdown delay Setting of the delay time for the fan shutdown function. Controller delay Here, it can be selected in which operating mode the controller delay shall become active.

Controller delay speed Speed delivered during the controller delay time.

Controller delay duration Duration of controller delay. This delay time is started the moment a flame is definitively detected after ignition.

Delay heat req special op Parameter Delay heat req special op (2470) can be used to delay burner startup, thus allowing the actuating element to release the heating circuit before the heat source reaches its operating position.Menu: Boiler

Line no. Operating line Factory setting 2630 Auto deaeration procedure Off

See manual boiler 2655 ON time deaeration 2656 OFF time deaeration 2657 Number of repetitions 2662 Venting time heating circuit 2663 Venting time DHW Deaeration function Using the automatic deaerator installed in the boiler, the function is intended to remove any air from the space heating / DHW system. For that purpose, the pumps in the system are activated and deactivated according to a certain sequence. The Deaeration function is performed in up to 4 preselectable phases. The phases are distinguished in terms of heating circuit deaeration, DHW circuit deaeration, cycled pump control, and static pump control for the entire phase. During these phases, a 3- port valve is driven to a certain position. When the preselected phases of the Deaeration function have elapsed, the function is automatically ended. When this function is started, the burner control changes to standby, which means that it is off during the whole time the Deaeration function is performed. Auto deaeration procedure The deaeration ends automatically. Off Function deactivated.

ON time deaeration On time of the boiler / heating circuit pumps in phases 2 and 4 of the deaeration procedure.

OFF time deaeration Off time of the boiler / heating circuit pumps in phases 2 and 4 of the deaeration procedure.

Number of repetitions Number of repetitions of pump switching cycles in phases 2 and 4 of the deaeration procedure.

Venting time heating circuit Duration of deaeration with continuous control of the boiler / heating circuit pumps in phase 1 of the deaeration procedure.

Venting time DHW Duration of deaeration with continuous control of the boiler / DHW pumps in phase 3 of the deaeration procedure.Menu: Cascade

Release integral source seq When, with the heat source currently in operation, the demand for heat cannot be met, the difference being the release integral set here, another boiler is switched on. When the value is increased, additional heat sources are switched on at a slower rate. When the value is decreased, additional heat sources are switched on at a faster rate.

Reset integral source seq When, with the heat source currently in operation, the demand for heat is exceeded by the reset integral set here, the heat source with the highest priority is shut down. When the value is increased, heat sources operate for longer periods of time (in the case of surplus heat). When the value is decreased, heat sources are switched off at a faster rate.

Restart lock The restart lock prevents a deactivated heat source from being switched on again. It is released again only after the set time has elapsed. This prevents too frequent switching actions of the heat sources and ensures stable plant operating states.

Switch on delay Correct adjustment of the switch-on delay ensures that plant operating conditions will be stable. This prevents too frequent switching actions of the boilers (cycling). In the case of a DHW request, the delay time is fixed at 1 minute.

Forced time basic stage When switched on, every boiler operates with its basic stage for the period of time set here. The next stage is released only when this period of time has elapsed.

General: The cascade function and menu are only active when: the LBS Device address (Line no. 6600) is set to 1 and another LMS controller is connected to the LBS bus. Lead strategy The sources are switched on and off according to the selected lead strategy while giving consideration to the preset output band. To deactivate the impact of the output band, the limit values must be set to 0% and 100%, and the lead strategy to be selected is Late on, late off. Late on, early off Additional boilers are switched on as late as possible (output band max) and switched off again as early as possible (output band max). This means that the smallest possible number of boilers are in operation, or additional boilers operate with short on times. Late on, late off Additional boilers are switched on as late as possible (output band max) and switched off again as late as possible (output band min). This leads to the smallest possible number of switch-on/ off actions for the boilers. Early on, late off Additional boilers are switched on as early as possible (output band min) and switched off again as late as possible (output band min). This means that the largest possible number of boilers are in operation, or additional boilers operate with the longest possible on times. Line no. Operating line Factory setting 3510 Lead strategy Late on, early off Late on, late off Early on, late off See manual boiler 3511 Output band min 3512 Output band max Line no. Operating line Factory setting 3530 Release integral source seq See manual boiler 3531 Reset integral source seq 3532 Restart lock 3533 Swich on delay 3534 Forced time basic stageMenu: Cascade

Boiler sequence Auto source seq ch´over With automatic source sequence changeover, the boiler loads in a cascade can be influenced by defining the order of lead and lag boiler. Fixed order Setting - - - defines a fixed order. In that case, the lead boiler can be selected on operating line 3544; the other boilers are then switched on and off in the same order as the LPB device addresses. Order according to the number of operating hours On completion of the number of hours set, the boiler sequence in the cascade changes. It is always the boiler with the next higher device address which assumes the role of the lead boiler. Auto source seq exclusing Setting automatic source sequence exclusion is only used in connection with the activated heat source sequence (operating line 3540). Using automatic source sequence exclusion, the first and / or the last boiler can be exempted from automatic changeover. None. The order of switching on the boilers changes when the number of hours set is reached (operating line 3540). First The first boiler in terms of addressing will always be the lead boiler. With the other boilers, the order of switching on changes when the set number of hours is reached (operating line 3540). Last The last boiler in terms of addressing will always be the last. The other boilers change when the set number of hours is reached (operating line 3540). First and last The first boiler in terms of addressing will always be the lead boiler. The last boiler in terms of addressing will always be the last. The boilers in between change when the set number of hours is reached (operating line 3540). Leading source The leading source is only selected in connection with the fixed order of the heat source sequence (operating line 3540). The boiler selected as the lead boiler is always the first to be switched on, or the last to be switched off. The other boilers are switched on and off in the order of their device addresses. Return setpoint min If the return temperature drops below the adjusted return setpoint, maintained boiler return temperature becomes active. Maintained boiler return temperature allows consumers to be influenced or a return temperature controller to be used.

Line no. Operating line Factory setting 3540 Auto source seq ch´over See manual boiler 3541 Auto source sez exclusing None First Last First and last

Solar Charging controller (dT) For charging the storage tank via the heat exchanger, the temperature differential between collector and storage tank/swimming pool must be sufficient, and the collector must have reached the minimum charging temperature for the storage tank/ swimming pool. Line no. Operating line Factory setting

Temp diff on See manual boiler

Temp diff off buffer

Temp diff on swi pool

Temp diff off swi pool

Charging temp min swi pool

TSp Tkol SdEin SdAus

OFF 2358Z12 On / Off Collector pump SdOff Temperature differential off SdOn Temperature differential on Tkol Collector temperature TLmin Charging temperature mini mum DHW storage tank / buffer / swimming pool TSp Storage tank temperature . General: The solar function and menu are only active when in the Configuration menu a multifunctional output 5891, 6030- 6038 is programmed as solar function and the dedicated multifunctional sen- sor inputs 5930, 5931, 6040-6045 are activated.Menu: Solar

Line no. Operating line Factory setting 3822 Charging prio storage tank None DHW storage tank Buffer storage tank See manual boiler Priority The priority circuit for the swimming pool (operating line 2065) can impact storage tank priority of solar charging and possibly charge the swimming pool before the storage tanks. Charging prio storage tank If a plant uses several heat exchangers, it is possible to set a priority for the integrated storage tanks, which defines the charging sequence. None Every storage tank is charged alternately by 5 °C at a time, until every setpoint of level A, B or C (see below) is reached. The setpoints of the next higher level are approached only when all setpoints of the previous level have been reached. DHW storage tank During solar charging, preference is given to the DHW storage tank. At every level A, B or C (see below), it is charged with priority. Only then will the other consumers of the same level be charged. As soon as all setpoints of a level are attained, those of the next level are approached, whereby priority is again given to the DHW storage tank. Charging time relative prio If the preferred storage tank cannot be charged in accordance with charging control, priority is transferred to the next storage tank or the swimming pool for the period of time set (e.g. too great temperature differential between collector and storage tank). As soon as the preferred storage tank (according to setting Charging priority storage tank) is again ready to be charged, the transfer of priority will immediately be stopped. If this parameter is disabled (---) charging proceeds in accordance with the Charging prio storage tank setting. Waiting time relative prio During the period of time set, the transfer of priority will be delayed. This prevents relative priority from intervening too frequently. Level DHW storage tank Buffer storage tank A 1610 Nominal setpoint Buffer setpoint (slave pointer B 5050 Charging Temperature Maximum 4750 Charging Temperature Maximum C 5051 Storage tank Temperature Maximum 4751 Storage tank Temperature Maximum Swimming pool (1) 2055 Setpoint Solar heating 2055 Setpoint Solar heating 2070 Swimming pool Temperature Maximum Sollwerte der Speicher: Waiting time parallel op If solar output is sufficient and solar charging pumps are used, parallel operation is possible. In that case, the storage tank of the priority model can be the next to be simultaneously charged, in addition to the storage tank to be charged next. Parallel operation can be delayed by introducing a waiting time. This way, in the case of parallel operation, switching on of the storage tanks can be effected in steps. The setting (---) disables parallel operation. (¹)When priority for the swimming pool is activated (operating line 2065), the swimming pool is charged before the storage tanks. Line no. Operating line Factory setting 3825 Charging time relative prio See manual boiler 3826 Waiting time relative prio 3827 Waiting time parallel op 3828 Delay secondary pump Buffer storage tank During solar charging, preference is given to the buffer storage tank. At every level A, B or C (see below), it is charged with priority. Only then will the other consumers of the same level be charged. As soon as all setpoints of a level are attained, those of the next level are approached, whereby priority is again given to the buffer storage tank. Delay secondary pump To carry away any cold water resting in the primary circuit, the secondary pump of the external heat exchanger can be delayed.Menu: Solar

Collector frost protection When there is risk of frost at the collector, the collector pump will be activated to prevent the heat-carrying medium from freezing.

• If the collector temperature falls below the frost protection temperature, the collector pump will be activated: TKol < TKolFrost Line no. Operating line Factory setting 3840 Collector frost protection See manual boiler Start function Line no. Operating line Factory setting 3830 Collector start function See manual boiler 3831 Min run time collector pump 3834 Collector start funct grad Collector start function If the collector temperature cannot be correctly acquired because the pump is not running (especially in the case of vacuum tubes), the pump can be activated from time to time. Min run time collector pump When the collector pump is activated, it remains on for the minimum running time, independent of temperature differentials The minimum running time of the pump can be parameterized and is active with all functions that activate the collector pump. Collector start funct grad The collector pump is activated as soon as the temperature acquired by the collector sensor rises. Collector overtemp prot If there is a risk of overtemperature at the collector, storage tank charging is continued to reduce the amount of surplus heat. When the storage tank safety temperature is reached, charging will be stopped. Line no. Operating line Factory setting

Off On / Off Collector pump t Time T Temperature Tkol Collector temperature TKolUe Collector temperature for overtemperature protection TSp Storage tank temperature TSpMax Maximum charging temperature TSpSi Storage tank safety temperature

Evaporation heat carrier If there is a risk of the heat carrying medium evaporating due to high collector temperatures, the collector pump will be deactivated to prevent it from reaching excessive temperatures. This is a protective pump function. Line no. Operating line Factory setting 3860 Evaporation heat carrier See manual boiler Speed controlled pump When the collector pump is connected to multifunctional output QX3.The mo- dulation range of the pump can be li- mited. Pump speed min / max The solar pump motor speed is limited by a minimum and maximum permitted speed. Line no. Operating line Factory setting 3870 Pump speed min See manual boiler 3871 Pump speed max Yield measurement The 24-hour and total solar energy yield (Line no. 8526, 8527) is calcula- ted, base on these data. Antifreeze Since the mixing ratio of the collector medium has an impact on heat transmission, the type of antifreeze used and its concentration must be entered in order to be able to determine the energy yield. Pump capacity The flow rate in l/h of the pump used must be determined and serves for calculating the volume delivered. Pulse unit yield Defines the flow per pulse for the cho- sen Hx-Input. The chosen Hx-Input has to be configured to Pulse measurement accordingly. Line no. Operating line Factory setting

Line no. Operating line Factory setting

Locks other heat sources See manual boiler This anticipating function enables the locked heat sources to terminate any overrun of pumps before the solid fuel boiler pump is activated. Line no. Operating line Factory setting 4110 Setpoint min See manual boiler 4130 Temp diff on exchanger 4131 Temp diff off exchanger 4133 Comparative temp DHW sensor B3 DHW sensor B31 Buffer sensor B4 Buffer sensor B41 Flow temp setpoint Setpoint min Setpoints, Temperature diffs The boiler pump will be put into operation only when the boiler temperature has reached a minimum temperature level, in addition to the required temperature differential. Above this minimum temperature the boiler should not produce condensate anymore. Comparative temp Depending on the hydraulic configurati- on, the solid fuel boiler temp will be compared to for example the buffer sensor B4. Delta T-Controller For the boiler pump to be put into operation, a sufficiently great temperature differential between boiler temperature and comparison temperature is required. TKx Boiler temp Bx Comparative temp On/Off Boiler pump Locks other heat sources When the solid fuel boiler is put into operation, other heat sources, such as oil/gas boilers, will be locked. Locking takes place as soon as the boiler temperature rises to a degree that crossing of the comparative temperature (Line no. 4133) can be expected. General: The solid fuel boiler function and menu are only active when in the Configurati- on menu a multifunctional output 5891, 6030-6038 is programmed as solid fuel boiler function and the dedicated multi- functional sensor inputs 5930, 5931, 6040-6045 are activated. Excess heat discharge If the boiler temperature reaches the set maximum value, the solid fuel boiler pump is activated until the boiler temp sinks 5K below the set value. The excess heat is discharged into the Buf- fer or HCs for which Excess heat draw Line no. 861, 1161, 5085 are activated. Line no. Operating line Factory setting 4141 Excess heat discharge See manual boiler 4170 Frost prot plant boiler pump

Off SDon Temp diff ON SDoff Temp diff OFF Also, in the case of a common stack, it can be made certain that only one boiler is in operation at a time. Frost prot plant boiler pump The boiler pump is activated, depending on the current outside temperature, although there is no heat request. Frost protection for the solid fuel boiler works only if frost protection for the plant is activated (operating line 6120).Menu: Buffer storage tank

Line no. Operating line Factory setting 4720 Auto generation lock None With B4 See manual boiler 4721 Auto heat gen lock SD 4722 Temp diff buffer/HC Auto generation lock The automatic heat generation lock brings about a temporary hydraulic separation between heat source and buffer storage tank. The heat source is put into operation only when the buffer storage tank is no longer able to cover the current demand for heat. Line no. Operating line Factory setting

Charging temp max See manual boiler Overtemperature protection The buffer will be charged by the solar energy to the set max charging temp. The overtemperature protection cn reactivate the collector pump until the maximum buffer temperature (fix 90°C) has been reached. Line no. Operating line Factory setting 4755 Recooling temp See manual boiler 4756 Recooling DHW/HCs 4757 Recooling collector Off Summer Always Recooling DHW/HCs 2 functions are available for recooling the buffer storage tank down to the recooling temperature. The recooling takes place from the max buffer temperature down to the return temperature. Line no. Operating line Factory setting 4783 With solar integration See manual boiler Plant hydraulics Select whether the buffer should be charged by the solar energy. Only the DHW tank or the buffer can be charged by the solar energy. General: The Buffer function and menu are only active when in the Configuration menu the multifunctional sensor inputs 5930, 5931, 6040-6045 are programmed as B4 and B41. Additionally in the LPB menu the device address has to be set to 1. Min st tank temp heat mode If the tank temperature B4 drops below the set min. tank temp, the HCs are switched off. Line no. Operating line Factory setting 4724 Min st tank temp heat mode See manual boiler The excess heat of the buffer can be drawn by a heat demand of heating or DHW tank. This can be selected for the individual HCs (Line no's 861, 1161, 5085). Recooling Collector. In case of a cold collector, the excess heat can be dis- persed to the surroundings via the collector field.Menu: Buffer storage tank

Line no. Operating line Factory setting 4790 Temp diff on return div See manual boiler 4791 Temp diff off return div Line no. Operating line Factory setting 4796 Optg action return diversion Temp decrease Temp increase See manual boiler Line no. Operating line Factory setting 4800 Partial charging setpoint See manual boiler If there is a certain temperature differential between the common return sensor (B73) and the selectable comparative temperature, the return is diverted through the lower section of the buffer storage tank. The function can be used for a return temperature increase or return temperature decrease (to be selected on operating line 4796).

Temp diff on/off return div The selected temperature differential defines the switch on / off point of return diversion.

Compar temp return div Selection of the buffer storage tank temperature sensor with which the return temperature is compared in order to switch the return diversion based on the selected temperature differentials.

Optg action return diversion Selection of the buffer storage tank temperature sensor with which the return temperature is compared in order to switch the return diversion based on the selected temperature differentials.

Partial charging setpoint By hydraulically decoupling the lower buffer storage tank section, the chargeable storage volume is reduced. As a result, the upper storage tank section is charged in a shorter period of time. The lower storage tank section is only charged when charging of the upper section is completed. Line no. Operating line Factory setting 4795 Compar temp return div With B4 With B41 With B42 See manual boiler Temp decrease If the consumers’ return temperature is higher than the temperature at the selected sensor (operating line 4795), the return can be used to preheat the lower storage tank section. As a result, the return temperature drops further which, in the case of a condensing boiler, leads to higher efficiency. This is defined on operating line 4796. In addition, the setting of the respective relay output is to be made as Buffer return valve Y15 in configuration Relay output QX1, 2 ,3, 4 (operating lines 5890, 5891, 5892 and 5894) and the common return sensor (B73) at BX.

Temp increase If the consumers’ return temperature is lower than the temperature at the selected sensor (operating line 4795), the return temperature can be raised by diverting the return through the lower storage tank section. As a result, the return temperature increases.Menu: Buffer storage tank

Line no. Operating line Factory setting 4810 Full charging Off Heating mode Always See manual boiler Line no. Operating line Factory setting 4813 Full charging sensor With B4 With B42/B41 See manual boiler Full charging Function full buffer storage tank charging enables released heat sources to switch off only when the buffer storage tank is fully charged, in spite of automatic heat generation lock.

Full charging temp min The buffer storage tank is charged to at least the set level.

Full charging sensor Line no. Operating line Factory setting 4811 Full charging temp min See manual boiler Off The full charging function is deactivated. Heating mode Full charging becomes active when due to the buffer storage tank temperature automatic heat generation locks the heat sources while the heat request is valid. When the buffer storage tank’s sensor parameterized for the function reaches the required temperature, the function is ended. Always Full charging becomes active when due to the buffer storage tank temperature automatic heat generation locks the heat sources while the heat request is valid, or when the heat request becomes invalid. When the buffer storage tank’s sensor parameterized for the function reaches the required temperature, the function is ended. With B4 The full charging function uses buffer sensor B4.

Line no. Operating line Factory setting 5010 Charging Once/day Several times/day See manual boiler 5020 Flow setpoint boost 5021 Transfer boost 5022 Type of charging Recharging Full charging Full charging legio Full Charg 1st time day Charging Setting Once/day or Several times/day is active only when the DHW release is set in accordance with the heating circuits’ time programs. Flow setpoint boost The DHW request to the boiler is made up of the current DHW setpoint plus the adjustable charging boost. Transfer boost Heat transfer makes it possible to transport energy from the buffer storage tank to the DHW storage tank. In that case, the actual buffer storage tank temperature must be higher than the actual temperature of the DHW storage tank. The temperature differential can be set here. Switching diff If the DHW temperature is lower than the current setpoint minus the switching differential set here, DHW charging is started. DHW charging is ended when the temperature reaches the current setpoint. Charging time limitation During DHW charging, space heating may receive no heat or not enough heat, depending on the selected charging priority (operating line 1630) and the hydraulic circuit. For this reason, it is often practical to have a temporal limitation of DHW charging. Discharging protection This function ensures that the DHW charging pump (Q3) is activated only when the heat source temperature is high enough.

Charging temp max Solar energy charges the DHW storage tank up to the adjusted maximum DHW charging level. The protective collector overtemperature function can reactivate the collector pump until the maximum storage tank temperature is reached. Recooling temp If activated, the recooling function remains in operation until the adjusted recooling temperature in the DHW storage tank is reached. Type of charging The storage tank can be charged using up to 2 sensors. It is also possible to combine partial charging with 1 sensor and the Legionella function with 2 sensors (setting 3). Recooling heat gen/HCs Heating energy can be drawn off either by space heating or the DHW storage tank. This can be selected separately for each heating circuit (operating page heating circuit 1…). Line no. Operating line Factory setting

Charging temp max See manual boiler 5055 Recooling temp 5056 Recooling heat gen/HCs 5057 Recooling collector Off Summer Always Line no. Operating line Factory setting 5024 Switching diff See manual boiler 5030 Charging time limitation 5040 Discharging protection Off Always Automatic Application with thermostat The charging pump is activated only when the boiler temperature lies above the nominal DHW setpoint. When, during the charging process, the boiler temperature drops to a level below the nominal DHW temperature setpoint minus the DHW switching differential, the charging pump is deactivated again. Application with sensor The charging pump is activated only when the heat source temperature lies at a level half the charging boost above the DHW temperature. When, during the charging process, the boiler temperature drops to a level below the DHW temperature plus 1/8 the charging boost, the charging pump is deactivated again. If 2 DHW sensors are parameterized for DHW charging, the lower temperature is considered for the Discharging protection function (usually B31). Recooling collector If the collector is cold, the energy can be emitted to the environment via the collector’s surfaces.Menu: DHW storage tank

Line no. Operating line Factory setting 5060 El imm heater optg mode Substitute Summer Always See manual boiler 5061 El immersion heater release 24h/day DHW release Time program 4/DHW 5062 El immersion heater control External thermostat DHW sensor El imm heater optg mode In place of the boiler , DHW can also be heated with an electric immersion heater. If DHW heating is provided by an electric immersion heater, no request will be sent to the boiler . The changeover between boiler and electric immersion heater takes place based on the following criteria.

Substitute The electric immersion heater is only used if the boiler delivers a fault status message or has been shut down via boiler lock. This means that in normal situations the DHW is always heated by the boiler. Summer The electric immersion heater is used as soon as all connected heating circuits have switched to summer operation. The DHW is again heated by the boiler as soon as at least 1 of the heating circuits has switched back to heating operation. But the electric immersion heater is also used if the boiler delivers a fault status message or has been shut down via boiler lock. El immersion heater release 24h/day The electric immersion heater is conti- nuously released inpedently of the time programs.

2358Z24 DHW Release The electric immersion heater is relea- sed within the DHW release period.

Time program 4/DHW The electric immersion heater is released within switching program 4.

2358Z26 El immersion heater control External thermostat The storage tank is charged via an external thermostat without setpoint compensation of the controller. DHW sensor The storage tank is charged via an electric immersion heater, with setpoint compensation from the controller. Important: To ensure that setpoint compensation operates as required, the external control thermostat must be set to the minimum storage temperature. Always DHW is heated with the electric immersion heater throughout the year. This means that when using this application, the boiler is never required for DHW heating.Menu: DHW storage tank

Plant hydraulics Excess heat draw Excess heat draw can be triggered by one of the following functions: - Inputs H1, H2, H3 or EX2 - Storage tank recooling - Solid fuel boiler with excess heat draw Line no. Operating line Factory setting 5085 Excess heat draw See manual boiler Line no. Operating line Factory setting 5101 Pump speed min See manual boiler 5102 Pump speed max Speed control charging pump The charging pump motor speed is limited by a minimum and maximum permitted speed. On start-up the pump is operated at maximum speed for appr. 10 seconds. When excess heat draw is activated, the surplus energy can be discharged for DHW storage. Pump speed min Minimum speed for the pump. Pump speed max Maximum speed for the pump. Line no. Operating line Factory setting 5090 With Buffer See manual boiler 5092 With prim contr/system pump 5093 With solar integration With Buffer If there is a buffer storage tank, specify whether the DHW storage tank can draw heat from it or directly from the boiler. When using alternative heat sources, the buffer storage tank temperature is used as a control criterion for the release of additional heat sources. With prim contr/system pump It is to be set whether the DHW storage tank receives its heat via the primary controller or with the help of the system pump (depending on the type of plant). The primary controller / system pump will be activated in the LOGON B. With solar integration It is to be set whether the DHW storage tank receives its heat from the solar collectors. Automatic push This function is only active when DHW heating is switched on.

Off The DHW push can only be triggered manually.

If the DHW temperature drops by more than 2 switching differentials (operating line 5024) below the Reduced setpoint (operating line 1612), one-time charging to the nominal DHW setpoint is effected again (operating line 1610).

Comparison temp transfer For the transfer the corresponding DHW sensor can be chosen as compa- rison temperature.Menu: Configuration

In the configuration menu general para- meters can be programmed. Presetting Via presetting one of 30 so called preselect configurations can be chosen. When doing so, the controller will auto- matically preset various line nr's ac- cording to the chosen configuration. Afterwards individual parameters can be changed to adapt to the demands. The plant diagram is determined by the preselect and the attached sensors.

Heating circuit 1, 2 The HCs can be switched on or off.

DHW Sensor DHW sensor B3 The controller calculates the switching points including the switching differenti- al from the DHW setpoint and the ac- quired DHW storage tank temperature. Thermostat The DHW temperature is controlled based on the switching state of a ther- mostat connected to DHW sensor B3.

DHW controlling element Q3 No charging element No charging via Q3. Charging pump The DHW is charged via a pump connected to Q3/Y3. Line no. Operating line Factory setting 5700 Preselect See manual boiler Line no. 5700 Preselct can show the following: Unchanged: All parameters that were preset by the Preselect function have the preselect settings. Changed: Parameters that were preset by the Preselect function have been adapted manually. Line no. Operating line Factory setting 5710 Heating circuit 1 See manual boiler 5715 Heating circuit 2 Line no. Operating line Factory setting 5730 DHW Sensor DHW sensor B3 Thermostat See manual boiler When using a DHW thermostat, Re- duced mode is not possible. This me- ans that when Reduced mode is active, DHW heating with the thermostat is locked. The adjustment of the nominal DHW temperature setpoint must be equal to or higher than the setpoint adjustment on the thermostat (thermostat calibra- ted at switch-off point). The flow temperature setpoint for DHW must be set to a minimum of 10 °C (has an impact on the charging time). In that case, the DHW is not protec- ted against frost. Line no. Operating line Factory setting 5731 DHW controlling element Q3 No charging element Charging pump Diverting valve See manual boiler Diverting valve The DHW is charged via a diverting valve connected to Q3/Y3. In this set- ting pump Q2 will be set to boilerpump, if the boiler pump has not already been programmed at a Relay output QX...Menu: Configuration

Line no. Operating line Factory setting 5734 Basic pos DHW div valve Last request Heating circuit DHW See manual boiler Basic pos DHW div valve The basic position of the diverting valve is the position the valve maintains when there is no heat request. Last request On completion of the last heat request, the diverting valve maintains position it held last.

DHW separate circuit The separate circuit can only be employed if a boiler cascade is used. For the separate circuit, DHW control- ling element Q3 must be set to Divert- ing valve.

Optg action DHW div valve Here, the diverting valve position is set that applies when the output is active.

Midposition DHW div valve Here, the DHW diverting valve can be driven to the midposition. This serves for filling or draining both heating cir- cuits. This action must be reset manu- ally.

Ctrl boiler pump/DHW valve This parameter is for use with special hydraulic schemes to define that boiler pump Q1 and diverting valve Q3 are only in charge of DHW and heating circuit 1, but not of heating circuit 2 and of external consumer circuits. Heating circuit On completion of the last heat request, the diverting valve is driven to the hea- ting circuit position. DHW On completion of the last heat request, the diverting valve is driven to the DHW position. Line no. Operating line Factory setting 5736 DHW separate circuit Off

See manual boiler Off The separate circuit is switched off. Every boiler in use can charge the DHW storage tank.

The separate circuit is switched on. DHW charging takes place exclusively via the boiler defined for that purpose. Line no. Operating line Factory setting 5737 Optg action DHW div valve Position on DHW Position on heating circuit See manual boiler Line no. Operating line Factory setting 5738 Midposition DHW div valve Off

See manual boiler Position On DHW When the output is active, the diverting valve is in the DHW position. Position on heating circuit When the output is active, the diverting valve is in the heating circuit position. Off The diverting valve is driven to position currently demanded, independent of heat requests and the basic position.

Solar controlling element In place of a collector pump and divert- ing valves for integrating the storage tanks, the solar plant can also be ope- rated with charging pumps.

External solar exchanger In the case of solar plants with 2 stora- ge tanks, it must be selected whether there is an external heat exchanger used for both the DHW and the buffer storage tank, or for 1 of them only.

Combi storage tank Functions specific to combi storage tanks are activated with this setting. For example the electric immersion heater in the buffer storage tank can be used for both space heating and DHW hea- ting. Line no. Operating line Factory setting 5840 Solar controlling element Charging pump Diverting valve See manual boiler Line no. Operating line Factory setting 5841 External solar exchanger Jointly DHW storage tank Buffer storage tank See manual boiler Charging pump When using a charging pump, all heat exchangers can be used at the same time. Either parallel or alternative ope- ration is possible. Diverting valve When using a diverting valve, it is al- ways only 1 heat exchanger that can be used at a time. Only alternative operati- on is possible. Line no. Operating line Factory setting 5870 Combi storage tank

Yes See manual boiler

No combi storage tank present. Yes Combi storage tank present.Menu: Configuration

Relais output QX The settings of the relay outputs add additional functions to the plant dia- gram. QX2 is a relay output of LMS14. QX21, 22, 23 are relay output on AVS75 modules. Circulating pump Q4 The connected pump serves as a DHW circulating pump. Operation of the pump can be scheduled as required on operating page DHW, operating line Release circulating pump (Line no. 1660). El imm heater DHW K6 Using the connected electric immersion heater, the DHW can be heated up according to operating page DHW sto- rage tank, operating line electric immer- sion heater. Line no. 5060 should be programmed appropriately. Collector pump Q5 When using a solar collector, a circula- ting pump for the collector circuit is required. Cons circuit pump VK1/2/3 External request pump 1 can be used for an additional consumer. Together with an external request for heat at input external request 1, it is possible to operate an air heater or similar. Boiler pump Q1 The connected pump is used for circu- lating the boiler water between boiler and low velocity header. Bypass pump Q12 The connected pump serves as a boiler bypass pump for maintaining the boiler return temperature. Alarm output K10 The alarm relay signals faults, should they occur. Switching on takes place with a delay of two minutes. When the fault is corrected, that is, when the fault status is no longer present, the relay will be deenergized with no delay. If the fault cannot immediately be cor- rected, it is still possible to reset the alarm relay. This is made on operating page Faults (Line no. 6710). Line no. Operating line Factory setting

Relais output QX None Circulating pump Q4 El imm heater DHW K6 Collector pump Q5 Cons circuit pump VK1 Q15 Boiler pump Q1 Bypass pump Q12 Alarm output K10 2nd pump speed HC1 Q21 2nd pump speed HC2 Q22 2nd pump speed HC3 Q23 Heat circuit pump HC3 Q20 Cons circuit pump VK2 Q18 System pump Q14 Heat gen shutoff valve Y4 Solid fuel boiler pump Q10 Time program 5 K13 Buffer return valve Y15 Solar pump ext exch K9 Solar ctrl elem buffer K8 Solar ctrl elem swi pool K18 Cons circuit pump VK3 Q19 Cascade pump Q25 St tank transfer pump Q11 DHW mixing pump Q35 DHW interm circ pump Q33 Heat request K27 Refrigeration request K28 Heat circuit pump HC1 Q2 Heat circuit pump HC2 Q6 DHW ctrl elem Q3 Instant heater ctrl elem Q34 Water filling K34 2nd boiler pump speed Q27 Status output K35 Status information K36 Flue gas damper K37 Fan shutdown K38 See manual boiler

2nd pump speed HC1/2/3 This function allows the control of a 2- stage heating circuit pump, so that when heating load is reduced the pump load can be reduced as well. The relay output QX is used to switch on the 2nd stage. Heat circuit pump Q20 (for direct circuit) The direct circuit will be activated. Time program: For the direct circuit only Time program 3/HC3 can be used. Also check menu "Time program 3/HC3". System pump Q14 The connected pump serves as a sys- tem pump, which can be used to supply heat to additional consumers. The sys- tem pump is put into operation as soon as there is a heat request from one of the consumers. If there is no heat requ- est, the pump is deactivated on com- pletion of the overrun time. 1st stage Output Q2/ Q6/Q20 2nd Stage Output Q21/ Q22/Q23 Pump mode Off Off Off On Off Min load On On Full loadMenu: Configuration

Heat gen shutoff valve Y4 If the buffer storage tank holds a suffi- cient amount of heat, the consumers can draw their heat from it, and the heat sources need not be put into ope- ration. Automatic heat generation lock locks the heat sources and hydraulical- ly disconnects them from the rest of the plant with the help of heat source shut- off valve Y4. This means that the heat consumers draw their energy from the buffer storage tank and wrong circulati- on through the heat sources will be eliminated. Solid fuel boiler pump Q10 For the connection of a solid fuel boiler, a circulating pump for the boiler circuit is required. Time program 5 K13 The relay is controlled according to the settings made in time program 5. Buffer return valve Y15 This valve must be configured for return temperature increase / decrease or partial charging of the buffer storage tank. Solar pump ext. exch K9 For the external heat exchanger, solar pump external exchanger K9 must be set at the multifunctional relay output (QX). If both a DHW and a buffer stora- ge tank are available, operating line 5841 External solar heat exchanger must also be set.

Solar ctrl elem buffer K8 If several heat exchangers are used, the buffer storage tank must be set at the respective relay output and, in addi- tion, the type of solar controlling ele- ment must be defined on operating line 5840). Solar ctrl elem swi pool K18 If several heat exchangers are used, the swimming pool must be set at the respective relay output and, in addition, the type of solar controlling element must be defined on operating line 5840). Swimming pool pum Q16 External request pump 3 can be used for an additional consumer. Together with an external request for heat at input external request 3, it is possible to operate an air heater or similar. Cascade pump Q25 Common boiler pump for all boilers in a cascade. St tank transfer pump Q11 If the temperature level of the buffer storage tank is high enough, the DHW storage tank can be charged by the buffer. This transfer can be made by means of storage tank transfer pump Q11. DHW mixing pump Q35 Separate pump for storage tank circula- tion during the time the legionella func- tion is active. DHW interm circ pump Q33 Charging pump with DHW storage tank using an external heat exchanger. Heat request K27 Contact closes to inform an external heat source that a heat demand is pen- ding. Refrigeration request K28 Function not yet implemented. Heat circuit pump HC1 Q2 Pump HC1 will be activated. Hat circuit pump HC2 Q6 Pump HC2 will be activated. DHW ctrl elem Q3 Control element for DHW storage tank. Instant WH ctrl elem Q34 Ctrl element for DHW instantaneous. 2nd boiler pump speed Q27 Speed 2 of the boiler pump will be acti- vated. Status output K35 Function status output. Status information K36 Function status information. Flue gas damper K37 Function flue gas damper. Fan shutdown K38 Function “Fan shutdown“ to turn off power supply when the fan is not needed.Menu: Configuration

Sensor input BX1, 2, 21, 22 Depending on the selection made, the sensor input settings assign appropria- te functions. BX1 and 2 are sensor inputs of the LMS14. BX21 and 22 are sensor inputs on the AVS75 modules. None Sensor input with no function. DHW sensor B31 DHW storage tank sensor at the bottom. Return sensor B7 Not a safety-related boiler return temperature sensor. DHW circulation sensor B39 DHW circulation sensor / standby sensor. Buffer sensor B4 Buffer storage tank sensor at the top. Buffer sensor B41 Buffer storage tank sensor at the bottom. Buffer sensor B42 Third buffer storage tank sensor (in the middle). Solar flow sensor B63 Solar flow temperature sensor for yield measurement. Solar return sensor B64 Solar return temperature sensor for yield measurement

Line no. Operating line Factory setting

The operating modes of the heating circuits are switched to Protection mo- de via the Hx input (e.g. using a remote telephone switch). DHW DHW heating is locked only when using setting HCs+DHW or DHW. Heat generation lock The heat source is be locked via the Hx terminals. All temperature requests made by the heating circuits and by DHW will be ignored. Frost protection for the boiler will be maintained. Error/Alarm message Input H1 generates a controller-internal error message. If the “Alarm out- put” (relay outputs QX1 - 4, operating lines 5891 – 5894) is appropriately con- figured, the error message will be for- warded or displayed by an additional contact (e.g. an external lamp or horn). Consumer request VK1/VK2/VK3 The adjusted flow temperature setpoint will be activated via terminal Hx (e.g. an air heater function for a warm air cur- tain) closes its contact. The setpoint can be programmed on Line no. 1859, 1909 and 1959. Excess heat discharge Active dissipation of excess heat enab- les an external heat source to force consumers (heating circuit, DHW stora- ge tank, Hx pump) to draw excess heat by delivering a forced signal. Parameter Excess heat draw can be used to deter- mine for every consumer whether or not it should take account of the forced signal and, hence, whether or not that consumer should participate in the dissipation of heat. Local effect When using LPB device address 0 or >1, excess heat discharge only acts on the local consumers connected to the controller. Line no. Operating line Factory setting

Function Input H1/H2/H4/H5 None Optg mode change HCs+DHW Optg mode changeover DHW Optg mode changeover HCs Optg mode changeover HC1 Optg mode changeover HC2 Optg mode changeover HC3 Heat generation lock Error/alarm message Consumer request VK1 Consumer request VK2 Consumer request VK3 Excess heat discharge Release swi pool solar Operating level DHW Operating level HC1 Operating level HC2 Operating level HC3 Room thermostat HC1 Room thermostat HC2 Room thermostat HC3 DHW flow switch DHW thermostat Start prevention Consumer request VK1 10V Consumer request VK2 10V Consumer request VK3 10V Pressure measurement 10V Preselected output 10V See manual boiler Central effect (LPB) When using LPB device address = 1, excess heat discharge also acts on the consumers connected to the other con- trollers in the same segment. The distribution of excess heat from segment 0 across other segments of the system is not possible. Release swi pool solar The function can be used to enable solar heating of the swimming pool externally (e.g. with a manual switch) or to define solar charging priority over storage. Configuration: Set the function of input Hx to Release swimming pool solar. Refer to operating line 2065 "Charging priority solar" for a description of the function. Operating level HC´s / DHW The operating level can be set via the contact in place of using the internal time program (external time program). Room thermostat HC1/HC2/HC3 The input can be used to generate a room thermostat request for the selec- ted heating circuit. DHW flow switch Input from the flow switch of the instan- taneous water heater. DHW thermostat Input from the DHW storage tank ther- mostat . Start prevention This input can be used to prevent bur- ner starts. Consumer request VK1/VK2/VK3 10V Application node “External load x“ re- ceives heat requests in the form of vol- tage signals (DC 0...10 V). The linear characteristic is defined with the help of 2 fixed points (voltage value 1 / function value 1 and voltage value 2 / function value 2). Pressure measurement DC 10 V The voltage signal present at input Hx is converted to a pressure value (linear conversion). The linear characteristic is defined by 2 fixed points (voltage value 1 / function value 1 and voltage value 2 / function value 2). Preselected output 10V The heat source receives a voltage signal (DC 0...10V) as an output requ- est. The linear characteristic is defined with the help of 2 fixed points (voltage value 1 / function value 1 and voltage value 2 / function value 2).Menu: Configuration

Line no. Operating line Factory setting

The contact is normally closed and must be opened to activate the selected function.

The contact is normally open and must be closed to activate the selected func- tion.

The linear characteristic is defined via 2 fixed points. The setting uses 2 param- eter pairs for Function value and Volt- age value (F1/U1 and F2/U2). At input H4 (frequency input), a frequency value is assigned to the function value, and not a voltage value. Extension module AVS75 Multifunctional Functions that can be assigned to the multifunctional inputs / outputs appear on operating lines 6030…6038. Heating circuit 1/2 For this application, the respective set- tings of operating page Heating circuit 1/2 can be adapted. Return temp controller The mixing valve control is part of the return temperature increase function. Settings in menu "Boiler".

Function input EX21 Module 1/2/3 None Input Hx has no function. Limit thermostat HC If the extension module for the heating circuit is used, an external limit ther- mostat (e.g. for underfloor heating) can be connected to input EX21 (AC 230V). Line no. Operating line Factory setting

Function Extension module 1/2/3 None Multifunctional HC1 HC2 Return temp controller Solar DHW Primary contr/system pump See manual boiler Solar DHW The relevant settings of operating page “Solar“ can be matched to meet the requirements of this application. Primary contr/system pump For this application, the respective set- tings of operating page Primary control- ler / system pump can be adapted. Line no. Operating line Factory setting

Sensor type collector Selection of type of sensor used. The controller will use the respective tempe- rature characteristic.

Readjustm collector sensor The measured value of the collector sensor can be corrected +/- 20 K. The measured value of the outside sensor can be corrected +/- 3 K.

Time constant building When the outside temperature varies, the room temperature changes at diffe- rent rates, depending on the building's thermal storage capacity. The above setting is used to adjust the response of the flow temperature setpoint when the outside temperature varies.

Central setp compensation Central setpoint compensation matches the setpoint of the heat source to the required central flow temperature.The setting limits the maximum readjust- ment, even in cases where greater adaptations would be called for. This function can only be implemented when using the common flow sensor (B10).

Setpoint Reduction delay This function prevents stage boilers or modulating boilers switching off too quickly. This makes the boilers not cool down, to prevent a new heat demand and restart of the boilers. The reduction delay only works when there is a setpoint change, not when the heat demand disappears. Line no. Operating line Factory setting 6097 Fühlertyp Kollektor NTC PT1000 See manual boiler Line no. Operating line Factory setting 6098 Readjustm collector sensor See manual boiler 6100 Readjustm outside sensor Line no. Operating line Factory setting 6110 Time constant building See manual boiler Line no. Operating line Factory setting 6117 Central setp compensation See manual boiler Line no. Operating line Factory setting 6118 Setpoint reduction delay See manual boilerMenu: Configuration Save sensors At midnight, the basic unit saves the statuses at the sensor terminals, provi- ded the controller has previously been in operation for at least 2 hours. If, after storage, a sensor fails, the ba- sic unit generates an error message. This setting is used to ensure immedia- te saving of the sensors. This becomes a requirement when, for instance, a sensor is removed because it is no longer needed.

Reset to default parameters All resettable parameters can be reset to their default values. Exempted from this are the following operating pages: Time of day and date, Operating unit, RF and all time programs, Setpoint ”Manual control”.

Plant diagram To identify the current plant diagram, the basic unit generates a check num- ber. The check no. is made up of the lined up partial diagram numbers. The meaning of the numbersfor the line no.'s can be found in the tables on the next page.

Software-Version The software version indicated here represents the current version of the basic unit. Line no. Operating line Factory setting 6200 Save sensors

Yes See manual boiler Line no. Operating line 6212 Check no. heat source 1 6213 Check no. heat source 2 6215 Check no. storage tank 6217 Check no. heating circuits Line no. Operating line 6220 Software version Frost protection plant Depending on the actual outside tem- perature the pumps will be switched on, even if there is no heat demand. Prerequisite for proper functioning is a fully operational plant. Frost protection for the plant necessitates an outside sensor. If that sensor is missing, the function will nevertheless be ensured by simulating an outside temperature of 0 °C and by delivering an error messa- ge. Off Function is deactivated.

Function is activated. Line no. Operating line Factory setting 6120 Frost protection plant Off

See manual boiler Outside temp Pump Diagram ...-4°C Continuously ON ON -5...1.5°C ON for 10 minutes at 6 hours intervals Cycle 1.5°C... Continuously OFF OFF 87Menu: Configuration

Gaskessel modulierend 11 Modulating boiler 12 Modulating boiler, boiler pump 13 Modulating boiler, bypass pump 14 Modulating boiler, boiler pump, bypass pump Solar 0 No Solar 1 Solar with collector sensor and - pump Check no. heat source 1 (Line no. 6212) Solid fuel boiler 0 No solid fuel boiler 1 Solid fuel boiler, boiler pump 2 Solid fuel boiler, boiler pump, integration DHW storage tank Check no. heat source 2 (Line no. 6213) Buffer storage tank DHW storage tank 0 No storage tank 1 Buffer storage tank 2 Buffer storage tank, solar connection 4 Buffer storage tank, heat source valve 5 Buffer storage tank, solar connection, heat source valve 0 No DHW storage tank 1 Electric immersion heater 2 Solar connection 4 Charging pump 5 Charging pump, solar connection 13 Diverting valve 14 Diverting valve, solar connection 16 Primary controller, without heat exchanger 17 Primary controller, 1 heat exchanger 19 Intermediate circuit, without heat exchanger 20 Intermediate circuit, 1 heat exchanger 22 Charging pump / intermediate circuit, without heat exchanger 23 Charging pump / intermediate circuit, 1 heat exchanger 25 Diverting valve / intermediate circuit, without heat exchanger 26 Diverting valve / intermediate circuit, 1 heat exchanger Check no. storage tank (Line no. 6215) HC 3 HC 2 HC 1 0 No HC 1 Circulation via boiler pump 2 HC pump 3 HC pump, mixing valve 0 No HC 1 Circulation via boiler pump 2 HC pump 3 HC pump, mixing valve 0 No HC 1 Circulation via boiler pump 2 HC pump 3 HC pump, mxing valve Check no. heating circuits (Line no. 6217)Menu: LPB

Line no. Operating line Factory setting 6600 Device address See manual boiler 6601 Segment address 6604 Bus power supply function Off Automatically 6605 Bus power supply State Off

Yes 6620 Action changeover functions Segment System 6621 Summer changeover Locally Centrally 6623 Optg mode changeover Locally Centrally 6624 Manual source lock Locally Segment Device address and Segment address The controller LPB address is divided into 2 parts each consisting of two 2- digit numerals. Example: Bus power supply function The bus power supply enables the bus system to be powered directly by the individual controllers (no central bus power supply). The type of bus power supply can be selected. Off No bus power supply via the controller. Automatically The bus power supply (LPB) via the controller is automatically switched on and off depending on the requirements of the LPB.

Bus power supply state The display shows whether the controller currently supplies power to the bus. Off The bus power supply via controller is currently inactive.

The bus power supply via controller is currently active. At the moment, the controller supplies some of the power required by the bus.

Display system messages This setting makes it possible to supp- ress on the connected operating sec- tion system messages transmitted via LPB.

Error messages are not displayed on the operator unit of the controller. Yes Error messages are displayed on the operator unit of the controller.

Segment address Device address Action changeover functions The range of action of central changeo- ver can be defined. This applies to the following types of limitation:

• Summer changeover (when selecting Centrally on line 6623)

• Summer changeover (with Centrally setting on operating line 6621) Segment Changeover takes place with all con- trollers in the same segment. System Changeover takes place with all con- trollers in the entire system (in all seg- ments). The controller must be located in segment 0!

Summer changeover The scope of summer changeover is as follows: Locally Local action; the local heating circuit is switched based on operating lines 730, 1030 and 1330. Centrally Central action; depending on the set- ting made on operating line Action changeover functions, either the heat- ing circuits in the segment or those of the entire system are switched based on operating line 730.

Optg mode changeover In LPB-capable devices, the basic unit with the LPB device address = 1 can adopt the function of a central operating mode changeover. The changeovers on the central basic unit (via H1 / H3) or the “HC operating mode changeover” parameter) then also take effect on the heating circuits and the DHW of the other basic units on the LPB. The scope of the operating mode chan- geover via input H is as follows: Locally Local action; the local heating circuit is switched on and off. Centrally Central action; depending on the set- ting made on operating line Action changeover functions, either the heat- ing circuits in the segment or those of the entire system are switched based on operating line 730.

Manual source lock The range of action of source lock is as follows: Locally Local action; the local source is locked. Segment Central action; all sources of the cas- cade are locked.Menu: LPB system

Line no. Operating line Factory settings 6625 DHW Assignment Local HCs All HCs i segment All HCs in system See manual boiler 6632 Note OT limit ext source

Yes 6640 Clock mode Autonomously Slave without remote setting Slave with remote setting Master 6650 Outside temp source Outside temp source Only 1 outside temperature sensor is required in the LPB plant. This sensor is connected to a freely selectable con- troller and delivers via LPB the signal to the controllers without sensor. The first numeral to appear on the display is the segment no. followed by the device no. Clock mode This setting defines the impact of the system time on the controller’s time setting. Autonomously The time of day on the controller can be readjusted. The controller's time of day is not matched to the system time. Slave without remote setting The time of day on the controller cannot be readjusted The controller's time of day is constantly and automatically matched to the system time. Slave with remote setting The time of day on the controller can be readjusted; at the same time, the sys- tem time is readjusted since the change is adopted from the master. The con- troller's time of day is still automatically and constantly matched to the system time. Master The time of day on the controller can be readjusted. The time of day on the con- troller is used for the system. The sys- tem time will be readjusted.

DHW Assignment Assignment of DHW heating is required only if it is controlled by a heating circuit program (operating lines 1620 and 5061). Local HCs DHW is only heated for the local hea- ting circuit. All HCs in segment DHW is heated for all heating circuits in the segment. All HCs in system DHW is heated for all heating circuits in the system. With all settings, controllers in holiday mode are also considered for DHW heating.

Note OT limit ext source Additional generators connected via the LPB bus can be locked or released per its own parameter based on the outside air temperature (e.g. air/water heat pump). This status is distributed via LPB. The master therefore knows in a cascade whether an additional genera- tor (slave) is available per its own em- ployment limits (outside air temperature or not and can switch another genera- tor accordingly.

The Ecobit from the external generator is not observed. Yes The Ecobit from the external generator is observed and the cascade is con- trolled per the provided generators. Caution! If an LMU control (slave) is connected as an additional generator, the parame- ter must be set to "No"!Menu: Fault, Service/special operation

Line no. Operating line Factory setting 6700 Message See manual boiler 6705 SW Diagnostic code 6706 Burner ctrl phase lockout pos 6710 Reset Alarm relay When a fault is pending, an error message can be displayed on the info level by pressing the Info button. The display describes the cause of the fault. Message A fault currently pending in the system is displayed here with the Albatros code indicating where the fault occurred.

SW Diagnostic code An internal software error currently pending in the system is displayed here with diagnostic code indicating where the error occurred.

Temperature alarms This function can be used for maintai- ning the required flow temperature. If the flow temperature deviates constantly from the required level for more than the period of time set, an error message will be delivered.

History The basic unit stores the last 20 errors in nonvolatile memory. Every new entry cancels the entry made last. For every error entry, error code, time, internal SW diagnostic code and fault phase of the burner control are stored.

Maintenance functions Burner hours interval / Burner start interval/ Maintenance interval As soon as the set number of burner hours or burner starts or maintenance interval has elapsed, a maintenance message is displayed. For this messa- ge, the number of operating hours and starts of the first burner stage (input E1) are counted.

Burn hrs since maintenance Burn starts since maint Time since maintenance The current value is added up and dis- played. On this operating line, the value can be reset to 0. Line no. Operating line Factory setting 6740 Flow temp 1 Alarm See manual boiler 6741 Flow temp 2 Alarm 6742 Flow temp 3 Alarm 6743 Boiler temp Alarm 6745 DHW charging Alarm Line no. Operating line Factory setting 6800…6996 History … Indication only Burner ctrl phase lockout pos A fault currently pending in the system is displayed here with the lockout phase indicating where the fault oc- curred. Reset alarm relay When a fault is pending, an alarm can be triggered via relay QX... The QX... relay must be appropriately configured. This setting can be used to reset the alarm relay. Fan speed ionization current This is the fan speed limit from which the burner ionization current mainte- nance message should be set if – due to too low ionization current – ionization current supervision and thus increased speed are activated. Message ionization current Flag to indicate and to reset the burner ionization current maintenance mes- sage. The maintenance message can be re- set only if the cause of the message has been rectified. Line no. Operating line Factory setting 7040 Burner hours interval See manual boiler 7041 Burn hrs since maintenance Indication only 7042 Burner start interval See manual boiler 7043 Burn starts since maint Indication only 7044 Maintenance interval See manual boiler 7045 Time since maintenance Indication only 7050 Fan speed ionization current See manual boiler 7051 Message ionization current

YesMenu: Service/special operation

Line no. Operating line Factory setting 7130 Chimney sweep function See manual boiler 7131 Burner output Partial load Full load Max heating load 7140 Manual control Chimney sweep function The burner is started up. To ensure that burner operation will be as continuous as possible, only maximum limitation of the boiler temperature is active to be used as the switch off point. To reach the minimum boiler tempera- ture of 64 °C as quickly as possible, all consumers are locked for that period of time by an absolute locking signal. When the boiler temperature exceeds 64 °C, a forced signal forces all consu- mers to draw heat so ensure that the boiler keeps running. The boiler temperature maximum limi- tation remains active when chimney sweeper function is active. Burner output Preset burner output for performing the Chimney sweep function.

Manual control When manual control is activated, the relays are no longer energized and deenergized according to the control status but are set to a predefined ma- nual control status in accordance with their functions (see table). Setpoint adjustment manual control After Manual control has been acti- vated, one should return to the main display. There the Service/special ope- ration symbol is displayed. The setpoint for manual control can be changed in the info menu, which can be reached by pushing the info-button. When manual control is activated, the relays are no longer energized and deenergized according to the control status but are set to a predefined ma- nual control status in accordance with their functions (see table below). The relay outputs are set to a state where heat is provided, independent of their hydraulic function. The solar plant remains switched off since there is a possibility of storage tank recooling via the collector. A relay energized in ma- nual operation can be deenergized by an electronic control thermostat (TR) or limit thermostat (TW). Designation Relay Status Gas boiler Boiler pump Q1 On

2. stage boiler pump Q27 On

Solid fuel boiler Solid fuel boiler pump Q10 On Solar Collector pump Q5 Off External exchange pump K9 Off Control element buffer storage tank K8 Off Control element swim- ming pool K18 Off DHW Charging pump Q3 On Diverting valve Q3 Off Intermediate circuit pump Q33 On DHW mixing pump Q35 Off Circulation pump Q4 On Electric immersion heater K6 On Instantaneous water heater Charging pump Q34 Off Diverting valve Q34 Off Buffer storage tank Heat generation shutoff valve Y4 On Return valve Y15 Off HC 1..3 HC pump Q2

Controller stop function In controller stop function the request to the burner is set to setpoint controller stop. Controller stop setpoint Setpoint for the burner request in con- troller stop function. Deaeration function This parameter serves for triggering the function manually, e.g. via hotkey or menu Maintenance/special operation. On completion of deaeration, the para- meter will be reset to Off. Deaeration can also be aborted any time by setting the parameter to Off. Type of venting This parameter can be used to presel- ect the phases of the Deaeration func- tion (for more detailed information, refer to chapter Deaeration function). Line no. Operating line Factory setting 7143 Controller stop function Off

7147 Type of venting None HC continuous HC cycled DHW continuous DHW cycled 7170 Telephone customer service Once the function is started, the value serves for information purposes and shows the phase currently handled. Telephone customer service Setting of phone number that appears on the info display. Line no. Operating line Factory setting 7250 PStick storage pos See manual boiler 7251 PStick description parameter set 7252 PStick command No operation Reading from stick Writing on stick 7253 PStick progress

No stick No operation Writing on stick Reading from stick EMC test active Writing error Reading error Incompatible data set Wrong stick type Stick format error Check data set Data set disabled Reading disabled Parameterstick The parameter stick can only be used in connection with a full-text operating unit. If this type of operating unit is not available, a service room unit can be connected for temporary use. When the parameter stick is plugged into the LMS14, it is identified and the information for auto-backup or auto- restore is evaluated. Stored on the parameter stick are se- veral parameter sets, which can be selected via the operating unit.

PStick storage pos PStick description parameter set Using data point PStick storage pos, the data set (data set number on the stick) to be written or read can be sel- ected. When a data set was selected, a second data point PStick Bez Daten- satz shows the Data set name. PStick Command Depending on the selection made, the following actions are performed: No operation (0) This is the basic state. This command is displayed as long as no operation on the stick is active. Reading from stick (1) Starts reading data from the stick. This operation is only possible with read or read / write sticks. Writing on stick (2) Starts writing data from the LMS14… to the stick. This operation is only possible with write or read / write sticks. PStick progress The progress made appears as a per- centage which, when stick operation is active (reading or writing) shows the percentage already completed. If no operation is active, or if an error occurs, the display reads 0%. In the 2nd box of the double display, the state is shown. Among other things, it serves as infor- mation about errors should problems occur.Menu: Input/output test, State Line no. Operating line Factory setting 7700…7952 - See manual boiler The input and output test is used to check the correct functioning of the connected plant components. By choosing a setting in the Relay test, the respective relay will be energized and the attached component will be activated. Functionality of the relays and the correctness of the wiring can be verified.

State The current operating state of the plant is visualized by means of status dis- plays. Important: Selected sensor values are updated within a maximum of 5 seconds. The display is made without measured valu- e correction. Line no. Operating line 8000 State HC 1 8001 State HC 2 8002 State HC P 8003 State DHW 8005 State Boiler 8007 State Solar 8008 State Solid fuel boiler 8009 State Burner 8010 State Buffer 8011 State Swimming pool 94Menu: Diagnostics Line no. Operating line 8304…8570 - Line no. Operating line 8700…9058 - Diagnose cascade For diagnostics purposes, a number of setpoints, actual values, switching sta- tes of relays and heat source priorities can be displayed.

Diagnostics heat generation For diagnostic purposes, the various setpoints, actual values, relay switching states and meter readings can be dis- played.

Diagnostics consumers For diagnostic purposes, the various setpoints, actual values, relay switching states and meter readings can be dis- played. Line no. Operating line 8100…8150 - 95Menu: Burner control

The burner control guarantees the pro- per functioning of the boiler including boiler start up, shutdown and flame supervision. The procedure itself is defined by parameters set by the manufacturer. The values in the table below are clas- sed to various boiler capacities and they should not be changed by installers. Only in certain cases should they be changed by Elco engineers. Line no. Operating line Factory setting 9500 Prepurge time See manual boiler 9512 Required speed ignition 9524 Required speed LF 9529 Required speed HF 9540 Postpurge time

Forced prepurging on error Off

Chimney drying Off Temporarily Permanently Prepurge time The prepurge time can be adjusted via the operating section. It can only be set to a value greater than 10 seconds. Required speed ignition Required speed at the time of ignition, which can be adjusted via the opera- ting section. It can only be set to a va- lue smaller than 3000rpm. Required speed LF Speed required at low-fire, which can be adjusted via the operating section. It can only be set to a value greater than “Required speed LF min“. Required speed HF Speed required at high-fire, which can be adjusted via the operating section. It can only be set to a value greater than “Required speed HF max“. Postpurge time Duration of postpurging, which can be adjusted via the operating section. It can only be set to a value greater than 7 seconds. Forced prepurging on error After a reset following lockout, after Power On, or after 24 hours in standby mode, forced prepurging takes place, in the TV phase for 21 s or “Prepurge time“ if “Prepurge time“ exceeds 21 s. Off Function is deactivated.

Function is activated.

Chimney drying When chimney drying is activated, the function is started after shutdown when changing to standby. Chimney drying can be interrupted by any heat request and can be restarted when the se- quence of phases returns to standby. Off Function is deactivated. Temporarily The duration of chimney drying is 10 minutes. Permanently Chimney drying is continuously perfor- med in standby mode.Notes 97Notes 98Notes 99Service: www.elco.netNotice d'utilisation pour intervenants autorisés

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2. Pomptrap Q21, Q22, Q23