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Siemens Building Technologies

Basic Dokumentation RVA63.280, RVA53.280

CE1P2374E

Landis & Staefa Division

19.04.2001

2.42.2

Shifting priority

The purpose of this function is to achieve optimum d.h.w. heating and, at the same
time, to deliver superfluous heat to the heating circuits. This means that during d.h.w.

heating, the actual value of the boiler temperature should be as close as possible to the
boiler temperature setpoint without shutting down the burner. To achieve this, it may be
necessary to restrict the heating circuits by means of a locking signal. This locking
signal is generated with the help of a temperature-time integral.
Depending on the consumer, the locking signal will lead to switching on / off or a
setpoint reduction.

Impact on 2-position loads

Due to the deactivation of the pumps, heat consumption will be reduced. The heating
up time for d.h.w. will thus be considerably shorter.

•

Heating circuit pump:

Status

Effect

Locking signal = 20 %

Normal pump operation

Locking signal > 20 %

Heating circuit pump cycles

Locking signal = 93 %

Heating circuit pump OFF

•

D.h.w. pump / system pump or boiler pump:

No effect

Through the generation of the temperature-time integral it is not only the period of time
that is considered, but also the extent of boiler temperature undershoot. This means
that when the crossing is significant, the pumps will be deactivated earlier.

Impact on modulating loads

Due to the lowering of the setpoint, heat consumption will be reduced. This reduces
considerably the heating up time for d.h.w., with a minimum impact on the heating
circuits.

•

Mixing valve:

Status

Effect

Locking signal > 0 %

Flow temperature setpoint will be lowered.
The extent of lowering is dependent on the magnitude and
the period of time of boiler temperature undershoot.

Locking signal reduced to
0 %

Setpoint according to the normal control condition

Through the generation of the temperature-time integral it is not only the period of time
that is considered, but also the extent of boiler temperature undershoot. This means
that when the undershoot is significant, the setpoint reduction will be greater.

Switching point

Lowering of setpoint

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Содержание RVA53.280

Страница 1: ...Edition 1 3 Controller series B CE1P2374E 19 04 2001 Siemens Building Technologies Landis Staefa Division RVA63 280 RVA53 280 Boiler and Heating Circuit Controllers Basic Documentation ...

Страница 2: ...2 184 Siemens Building Technologies Basic Dokumentation RVA63 280 RVA53 280 CE1P2374E Landis Staefa Division 19 04 2001 ...

Страница 3: ... Overview of heating engineer parameters 25 2 6 Parameter settings for the OEM 29 2 6 1 Overview of OEM parameters 30 2 7 Operation 32 2 7 1 Operating elements 32 2 8 Operational faults 34 1 Description of end user settings 36 User interface 36 1 1 Operating modes of heating circuit 36 1 2 Operating mode of d h w heating 38 1 3 Nominal room temperature setpoint 39 1 3 1 Temperature adjustment via ...

Страница 4: ...nd end of holiday period 63 1 29 Indication of BMU error code 64 1 30 Indication of faults 65 2 Description of heating engineer settings 67 Service values 67 2 1 Output test 67 2 2 Input test 68 2 3 Display of plant type 69 Actual values 70 2 4 Actual value of flow temperature 70 2 5 Actual value of boiler temperature 70 2 6 Actual value of common flow temperature 70 2 7 Actual value 1 of d h w te...

Страница 5: ...2 35 Floor curing 98 2 35 1 Temperature profile 98 2 35 2 Activating the function 99 2 35 3 Function 99 2 35 4 Display 99 2 35 5 Aborting the function 99 D h w 100 2 36 Reduced setpoint of d h w temperature TBWR 100 2 37 D h w heating program 101 2 37 1 24 hour operation setting 0 101 2 37 2 Operation according to the time switch programs with forward shift d h w Setting 1 102 2 37 3 Operation acc...

Страница 6: ...hing differential of the boiler temperature 131 3 3 1 Single stage burner 132 3 3 2 2 stage burner 132 3 4 Minimum limitation of burner running time 133 3 5 Release integral of burner stage 2 134 3 5 1 Temperature time integral 134 3 6 Reset integral of burner stage 2 135 3 6 1 Temperature time integral 135 3 7 Pump overrun time 136 3 8 Operating mode of the boiler 137 3 8 1 Extended burner runnin...

Страница 7: ... 32 Device operating hours 161 4 General control processes 162 4 1 Generation of boiler temperature setpoint 163 4 2 Automatic 24 hour heating limit 164 4 2 1 Without room influence 164 4 2 2 With room influence 165 4 3 Quick setback with room sensor 166 4 4 Overtemperature protection mixing heating circuit 167 4 5 Attenuated outside temperature 168 4 6 Composite outside temperature 169 4 7 D h w ...

Страница 8: ...nce 2 separately controlled heating circuits mixing or pump heating circuits Quick setback and boost heating Automatic 24 hour heating limit Automatic summer winter changeover Remote operation via digital room unit The building s thermal dynamics are taken into consideration Automatic adjustment of heating curve to the type of building construction and the heat demand provided a room unit is conne...

Страница 9: ...oint of d h w temperature Selectable d h w program Integrated legionella function Selectable priority for d h w heating Adjustable boost of the d h w charging temperature Automatic d h w push D h w demand with a sensor or thermostat Protection against discharging Communicating via Local Process Bus LPB 1 Communicating via point to point interface PPS Integrity of system architecture with all RVA c...

Страница 10: ...C21 Outside sensor Ni 1000 QAZ21 Immersion sensor with cable QAD21 Strap on temperature sensor Pt1000 Flue gas sensor third party product AGP2S 02M 1 LPB 2 poles violet AGP2S 02G Room unit 2 poles blue AGP2S 06A Sensor 6 poles white AGP2S 04G Sensor 4 poles grey AGP2S 02G Room unit PPS2 2 poles blue AGP2S 04C Sensor 4 poles yellow AGP3S 02D Mains 2 poles black AGP3S 05D Burner 5 poles red AGP3S 03...

Страница 11: ...f extensive systems several heating zones creation of extensive systems With or without d h w heating Heating boilers with single or 2 stage oil or gas burners Gas boilers with BMU Boiler Management Unit 1 5 Product liability The products may only be used in building services plant and applications as described above When using the products all requirements specified in Technical data and Handling...

Страница 12: ...ll sides The controller is designed conforming to the directives for safety class II mounted in compliance with these regulations Power to the controller may be supplied only after it is completely fitted in the cut out If this is not observed there is a risk of electric shock hazard near the terminals and through the cooling slots The controller may not be exposed to dripping water Permissible am...

Страница 13: ... the controller into the panel cut out without applying any force è Note Do not use any tools when inserting the unit into the cut out If it does not fit check the size of the cut out and the position of the fixing levers 2373Z07 Tighten the 2 screws on the front of the controller è Note Tighten the screws only slightly applying a torque of maximum 20 Ncm When tightening the screws the fixing leve...

Страница 14: ...he mechanical mounting facility makes it possible to arrange several controllers in a row in one cut out In that case it is merely necessary to have a wider panel cutout Also refer to Dimensions in Index 2373Z09 2 1 5 Orientation To avoid overtemperatures inside the controller the inclination may be no more than 30 and there must be a clearance of at least 10 mm above and below the cooling slots T...

Страница 15: ...s may not be run in the same duct 2 2 2 wiring When using prefabricated cables with connectors the electrical installation is very straightforward owing to coding Rear of controller 2 2 2 1 Connection terminals of RVA63 280 2374A01 4 6 5 4 M 2 1 M M F N 2 3 F 2 3 4 L F 2 F 4 5 F 2 3 3 M 1 4 3 M 1 M B8 M B1 H1 B2 B3 M B9 MD A6 MB DB B12 A7 MD B31 H2 B41 F2 N Y1 Y2 F6 Q2 L F4 K4 F5 K5 F1 Q3 Y3 Q6 F3...

Страница 16: ...side sensor MD Ground PPS RG1 BMU AGP2S 02G blue A6 PPS RG1 BMU MB Ground bus LPB AGP2S 02M violet DB Data bus LPB Terminal Terminals Connector Color Y6 Mixing valve HC2 CLOSED AGP3S 03K green Y5 Mixing valve HC2 OPEN F3 Phases Y5 and Y6 Not used AGP3S 04F orange Q6 Circulating pump mixing heating circuit 2 Q2 Circulating pump mixing heating circuit 1 F6 Phase Q2 Y2 Mixing valve CLOSED AGP3S 03K g...

Страница 17: ...amming mode Heating engineer and at the same time to the output test 3 Press the or button repeatedly which will take you one test step further Test step 0 All outputs are switched according to normal control operation Test step 1 All outputs are deactivated Test step 2 Burner stage 1 K4 is activated Test step 3 Burner stages 1 and 2 K4 K5 are activated Test step 4 D h w charging pump diverting va...

Страница 18: ...entation RVA63 280 RVA53 280 CE1P2374E Landis Staefa Division 19 04 2001 b c 2374Z03 a a The pointer below the symbol indicates the output activated b The number indicates the current test step c The number indicates the selected setting line Display ...

Страница 19: ...C or ooo or Test step 3 Display of flow temperature HC1 acquired with detector B1 Test step 4 Display of flow temperature HC2 acquired with detector B12 Test step 5 Display of outside temperature acquired with sensor B9 Test step 6 Display of room temperature acquired with room unit connected to A6 Test step 7 Display of room temperature acquired with room unit connected to A7 Test step 8 Display ...

Страница 20: ...ic Dokumentation RVA63 280 RVA53 280 CE1P2374E Landis Staefa Division 19 04 2001 b c 2374Z04 a a The number indicates the current test step b Displayed value of the temperature measured c The number indicates the selected setting line Display ...

Страница 21: ...ne selection buttons to select the required line The parameter list on the next 2 pages contains all available lines 3 Press the or button to set the required value The setting will be stored as soon as you leave the programming mode or change to another line The parameter list on the next 2 pages contains all settings that can be made 4 By pressing any of the operating mode buttons you leave the ...

Страница 22: ...ndividual days 1 7 1 7 Day 1 day 20 20 Switch on time 1 Period 24 00 h min 10 min 06 00 21 21 Switch off time 1 Period 24 00 h min 10 min 22 00 22 22 Switch on time 2 Period 24 00 h min 10 min 23 23 Switch off time 2 Period 24 00 h min 10 min 24 24 Switch on time 3 Period 24 00 h min 10 min 25 25 Switch off time 3 Period 24 00 h min 10 min D h w 26 26 Nominal setpoint of d h w temperature TBWw TBW...

Страница 23: ...ues 39 39 Standard times for switching programs 1 2 3 lines 6 11 and 20 25 To activate press the and buttons simultaneously for 3 seconds Holidays 40 40 Holiday period 1 8 1 1 41 41 Beginning of holiday period No holiday period programmed Month day To reset the selected holiday period press the and buttons simultaneously for 3 seconds 01 01 31 12 tt MM 1 42 42 End of holiday period No holiday peri...

Страница 24: ...ctly to the programming mode Heating engineer 3 Press the line selection buttons to select the required line The parameter list on the next 2 pages contains all available lines 4 Press the or button to set the required value The setting will be stored as soon as you leave the programming mode or change to another line The parameter list on the next 2 pages contains all settings that can be made 5 ...

Страница 25: ... type 1 127 1 Actual values 55 55 Actual value of flow temperature TVx Input B1 B12 0 140 C 1 56 56 Actual value of boiler temperature TKx Input B2 B4 0 140 C 1 57 Actual value of common flow temperature 0 140 C 1 61 61 Actual value 1 of d h w temperature TBWx Higher temperature 0 140 C 1 62 62 Actual value 2 of d h w temperature TBWx Lower temperature 0 140 C 1 63 63 Display of maximum flue gas t...

Страница 26: ...nit 0 Parallel action Room unit 1 on heating circuit 1 Room unit 2 on heating circuit 2 1 Crossed action Room unit 1 on heating circuit 2 Room unit 2 on heating circuit 1 2 Serial action Room unit 1 on heating circuits 1 and 2 0 2 1 0 104 104 Room unit values 0 Parallel action Room unit 1 on heating circuit 1 Room unit 2 on heating circuit 2 1 Crossed action Room unit 1 on heating circuit 2 Room u...

Страница 27: ... the flow temperature setpoint for d h w heating UEBW 0 30 C K 1 16 127 127 D h w priority 0 Absolute mixing and pump heating circuit 1 Shifting mixing and pump heating circuit 2 None parallel 3 Mixing heating circuit shifted Pump heating circuit absolut 0 3 1 1 128 128 Controlling element for d h w 0 Charging pump 1 Diverting valve 0 1 1 0 LPB system 140 LPB device address 0 Standalone 1 16 Devic...

Страница 28: ...ts H1 H2 B31 170 170 Input H1 0 Changeover of operating mode of all HC and d h w 1 Changeover of operating mode of all HC 2 Min flow temperature setpoint TVHw 3 Heat generation lock 1 Demand for heat DC 0 10 V 5 Changeover of operating mode HC1 6 Changeover of operating mode HC2 0 6 1 0 171 171 Minimum flow temperature setpoint contact H TVHw TKmax Line 2 OEM 8 TKmax C 1 70 172 172 Maximum value o...

Страница 29: ... has been entered incorrectly the display will change to the Parameter settings for the heating engineer 4 Press the line selection buttons to select the required line The parameter list on the next 2 pages contains all available lines 5 Press the or button to set the required value The setting will be stored as soon as you leave the programming mode or change to another line The parameter list on...

Страница 30: ... 2 Automatic mode Mit verlängerter burner running time 0 2 1 1 10 10 Protective boiler start up 0 No 1 Yes 0 1 1 1 12 12 Control of boiler pump 0 Mixed temperature requisition 1 Parallel to burner operation 0 1 1 0 Heating circuit 30 30 Boost of flow temperature setpoint mixing valve UEM 0 50 C K 1 10 31 31 Gain factor of room influence KORR 0 20 1 4 32 32 Constant for quick setback and optimum st...

Страница 31: ...int of d h w temperature TBWmax 8 80 C 1 60 51 51 Switching differential of d h w temperature SDBW 0 20 C K 1 5 52 52 Legionella function 0 Inactive 1 Active 0 1 1 1 53 53 Setpoint of legionella function 8 95 C 1 65 54 54 Discharge protection during d h w heating 0 No 1 Continuously 2 Partly 0 2 1 2 Service 90 90 Continuous display 0 Weekday time of day 1 Actual value of boiler temperature 0 1 1 0...

Страница 32: ... room temperature setpoint for heating circuit 2 Setting buttons Parameter settings Line selection buttons Parameter settings Heating circuit selection button Pre selection of heating circuit when making settings Function button with LED for manual operation Activation of manual operation Function button with LED for chimney sweep Activation of chimney sweep function Operating mode buttons heating...

Страница 33: ...80 CE1P2374E Landis Staefa Division 19 04 2001 a b c BUS ECO 2374Z02 d a Symbols indication of operating state with the black pointers b Display during normal control mode or when making settings c Programming line when making settings d Heating program of current day Display ...

Страница 34: ... test Quick setback or automatic 24 hour heating limit is active Check the settings especially the selection of the double function 2 8 1 4 Heating circuit pump does not run Is the right type of plant displayed setting line 53 Check wiring and fuse output test Check wiring of the sensors input test Check the settings especially the selection of the double function 2 8 1 5 Burner does not switch on...

Страница 35: ...s based on the setting instructions Heating engineer and the operating instructions End user especially the preselection of the double function Make the input test Make the output test Check the electromechanical control thermostat TR and the manual reset safety limit thermostat STB 2 8 1 10 Frost protection for the plant does not function at all or does not function correctly Check correct functi...

Страница 36: ...perating mode with the exception of the holiday function and when the remote telephone switch is activated Operating mode Designation Effect of selected operating mode Automatic operation Heating according to the time program lines 5 to 11 Temperature setpoints according to the heating program Protective functions active Changeover on the room unit active Automatic summer winter changeover ECO fun...

Страница 37: ...be affected Changeover of operating mode HC2 line 170 6 or line 174 4 Operating mode HC2 flashes when contact H1 or H2 is closed D h w operating mode button will not be affected Minimum setpoint of flow temperature line 170 2 or 174 1 Selected HC operating mode button flashes when contact H1 or H2 is closed D h w operating mode button will not be affected Heat demand DC 0 10 V line 170 4 Selected ...

Страница 38: ...w is not being heated Frost protection remains active however and prevents the storage tank temperature from falling below a certain level D h w heating ON button illuminated The d h w is heated according to the settings made The following settings affect d h w heating and must be checked to ensure proper functioning Setting Setting Time switch program 3 19 25 Nominal setpoint of the d h w tempera...

Страница 39: ...14 16 18 20 22 24 26 C 2373Z10 Room temperature setpoint setting ranges 27 Setting Reduced room temperature setpoint 28 Setting Frost protection setpoint of room temperature When the nominal room temperature setpoint is active the rooms will be heated according to the adjustment made with the setpoint knob Effect in the various operating modes Operating mode Effect of knob adjustment Adjustment ac...

Страница 40: ...s nominal room temperature setpoint Adjustment made with the controller s setpoint knob 20 C Adjustment made with the controller s setpoint knob 2 C Resulting setpoint 22 C The QAA70 room unit has an absolute setpoint adjustment using a line which replaces the setpoint adjusted with the controller s setpoint knob provided automatic mode has been selected on the controller In addition the QAA70 has...

Страница 41: ...ate settings are offered for a number of functions For these settings a double function with 2 different setting values is provided 1 Before making a setting the required heating circuit must be selected with the heating circuit selection button 2 Then the setting for the function can be made as usual The heating circuit selection button has 2 LEDs one at the top and one at the bottom of the butto...

Страница 42: ...cally return to the operating mode previously selected When the LED in the chimney sweep button is lit the chimney sweep function is active Multi stage burner Burner stages 1 and 2 will be switched on BMU The chimney sweep button has no effect But the forced signals will be generated as described below if the chimney sweep function on the BMU is activated The boiler s switching differential will n...

Страница 43: ...vation By pressing one of the operating mode buttons By pressing again the manual operation button When deactivating the function the controller will automatically return to the operating mode previously selected As soon as manual operation is activated the following values are used for the heat demand For space heating Maximum limitation of flow temperature setpoint line 107 For the d h w Nominal...

Страница 44: ... Index The time of day can be set from a remote location via the bus system provided clock operation is appropriately set Also refer to clock mode in Index 1 7 Time of day Setting range Unit 00 00 23 59 Hour Minute The controller s clock time is set in agreement with the correct time This setting is important to make certain the controller s heating program will operate correctly During the settin...

Страница 45: ...d on this setting This setting of date is important to make certain the controller s holiday program and summer wintertime changeover will operate correctly 1 10 Year Setting range Unit 1999 2099 Year The year of the controller will be based on this setting This setting of year is important to make certain the controller s holiday program and summer wintertime changeover will operate correctly Set...

Страница 46: ... times for time switch program 1 The heating program thus set becomes active with automatic mode Setting range Unit 1 7 1 7 7 day block Individual days This setting must be made before the switching times are entered For every day on which other switching times shall apply the preselection of the individual day with subsequent entry of the switching times must be repeated This setting is used to s...

Страница 47: ...47 184 Siemens Building Technologies Basic Dokumentation RVA63 280 RVA53 280 CE1P2374E Landis Staefa Division 19 04 2001 0 2 4 6 8 10 12 14 16 18 20 22 24 h Sa Mo Di Mi Do Fr So 2373Z12 Example ...

Страница 48: ...der At the times entered the program will switch to the respective temperature setpoints The table below shows at what times the setpoints will be activated Entry Switching point inactive 00 00 24 00At the time entered heating to the respective temperature is ensured Line Switching point Temperature setpoint Standard Switch on time period 1 Setpoint of knob 06 00 Switch off time period 1 Reduced s...

Страница 49: ...e switching time settings of the d h w time switch program The time switch program thus set is activated by pressing the d h w operating mode button Setting range Unit 1 7 1 7 7 day block Individual days This setting must be made before the switching times are entered For every day on which other switching times shall apply the preselection of the individual day with subsequent entry of the switch...

Страница 50: ...d The controller then makes a check to ensure the entries have been made in the correct order At the times entered the program will switch to the respective temperature setpoints The table below shows at what times the setpoints will be activated Entry Switching point inactive 00 00 24 00At the time entered heating to the respective temperature is ensured Line Switching point D h w temperature set...

Страница 51: ...uring normal d h w operation will be changed 0 10 20 30 40 50 60 70 80 90 100 C 2373Z13 26 Setting Nominal setpoint of d h w temperature 120 Setting Reduced setpoint of d h w temperature 50 OEM Setting Maximum nominal setpoint of d h w temperature D h w heating has 2 different setpoints that can be used Nominal setpoint of d h w temperature It ensures the d h w temperature required during main occ...

Страница 52: ...perature for frost protection setting on line 28 TRN Nominal room temperature setpoint to be adjusted with the setpoint knob If the required temperature level cannot be set the adjustment made with the setpoint knob may be too low It is not possible to set a value above the adjustment made with the setpoint knob 0 2 4 6 8 10 12 14 16 18 20 22 24 26 C 2373Z10 Room temperature setpoint setting range...

Страница 53: ...etting range Unit Factory setting 4 TRRw C 10 TRRw Reduced room temperature setpoint setting one line 27 This setting will change the frost protection setpoint of the room temperature In operating 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 0 2 4 6 8 10 12 14 16 18 20 22 24 26 C 2...

Страница 54: ...xtended Entry Increase Winter operation will start earlier Summer operation will start later Decrease Winter operation will start later Summer operation will start earlier The summer winter changeover temperature can act either locally or on other devices in the system also refer to section Effect of summer winter changeover temperature Also refer to effect of summer winter changeover function in ...

Страница 55: ...80 CE1P2374E Landis Staefa Division 19 04 2001 ON 17 T THG TAged C H OFF t 2371D06 THG 1 C THG 1 C 16 18 19 20 5 0 10 15 Changeover between summer and winter operation TAged Attenuated outside temperature THG Summer winter changeover temperature T Temperature t Time H Heating ...

Страница 56: ...ivated Increase The flow temperature will be raised when the outside temperature drops Decrease The flow temperature will be raised less when the outside temperature drops This setting also has an effect on the generation of the type of plant displayed on line 53 The switching on and off of the heating circuit through the setting or a value changes the plant configuration accordingly Using the hea...

Страница 57: ...A53 280 CE1P2374E Landis Staefa Division 19 04 2001 The flow temperature setpoint determined in this way serves as a setpoint request for generating the boiler temperature setpoint Also refer to generation of boiler temperature setpoint in Index Flow temperature setpoint ...

Страница 58: ...alid room sensor connected 1 21 Actual value of outside temperature TAx Display Unit 50 0 50 0 C The temperature measured with the outside sensor will automatically be displayed on this line 0 0 C Sensor with open circuit or no sensor connected 0 0 C Sensor with short circuit For more detailed information about resetting the attenuated outside temperature to the actual room temperature refer to at...

Страница 59: ...utput K4 The voltage of the output signal is AC 230 V Each time 2 full operating hours are registered the new value will be written to non volatile memory Only full hours are displayed and no minutes This means that if the display is checked again after a short period of time it may still show the previous reading if the burner has not yet completed another 2 operating hours When using a BMU the v...

Страница 60: ...e 2 full operating hours are registered the new value will be written to non volatile memory Only full hours are displayed and no minutes This means that if the display is checked again after a short period of time it may still show the previous reading if the second burner stage has not yet completed another 2 operating hours 1 24 Number of burner starts stage 1 Auxiliary value for ascertaining t...

Страница 61: ...nit 0 65535 Number The number of starts of burner stage 2 will automatically be displayed on this line The number of starts of burner stage 2 are counted with the signal received from output K5 Display of the number of burner starts is updated each time the burner is started up The number of burner starts is written to non volatile memory at 2 hour intervals or whenever there is a power failure De...

Страница 62: ...oon as the display changes to 1 Display Unit 0 1 In that case the individual settings will be lost The time settings will be overwritten with the standard values This applies to the following settings Only the switching times of time switch program 1 or 2 preselected with the heating circuit selection button will be overwritten The switching times of time switch program 3 d h w will be overwritten...

Страница 63: ...the background This means that if automatic mode is selected again the holiday function will be resumed The d h w mode can be changed while the holiday function is active When the holiday period is activated flashes The d h w operating mode button flashes depending on the setting made on line 123 and when d h w mode is activated The dates of the holiday period will be cleared as soon as the holida...

Страница 64: ...Fault messages cannot be acknowledged They disappear only if the appropriate fault has been rectified The display shows the error code If there is no fault message or if no BMU is connected there will be no display The meaning of the different error codes depends of the make of BMU used For this reason no overview of all the different error codes can be given here For details please refer to the t...

Страница 65: ...additional faults are present they will be stored as soon as storage capacity becomes available Faults that can occur on the controller Display Description of fault Blank No fault 10 Outside sensor 20 Boiler sensor 28 Flue gas temperature sensor 30 Flow temperature sensor 1 32 Flow temperature sensor 2 50 D h w temperature sensor connected to B3 52 D h w temperature sensor connected to B31 58 D h ...

Страница 66: ...y Description of fault 20 00 01 Fault with address of the faulty device The first 2 digits give the error code 20 The next 2 digits indicate the segment address of the faulty device 00 The last 2 digits indicate the device address of the faulty device 01 Example of a display after a fault has occurred 2374Z13 Faulty devices Display ER indicates that a fault has occurred Press to indicate the fault...

Страница 67: ...a ring counter This means it can be run through either forward or backward by pressing the buttons For more information refer to commissioning in Index Test step 0 All outputs are switched according to normal control operation Test step 1 All outputs are deactivated Test step 2 Burner stage 1 K4 is activated Test step 3 Burner stages 1 and 2 K4 K5 are activated Test step 4 D h w charging pump dive...

Страница 68: ...on refer to commissioning in Index Test step 0 Display of boiler temperature acquired with sensor B2 Test step 1 Display of d h w temperature acquired with sensor B3 Test step 2 Display of input B31 H2 according to the function selected on line 174 C or ooo or Test step 3 Display of flow temperature HC1 acquired with detector B1 Test step 4 Display of flow temperature HC2 acquired with sensor B12 ...

Страница 69: ...ipheral devices and parameter settings the controller ascertains the current plant type The plant type is displayed in the form of a number which corresponds to the plant diagram Refer to section Application examples for the various types of plant with the required peripheral devices The following factors have an impact on the generation of the type of plant Connection of a d h w sensor to B31 H2 ...

Страница 70: ...on this operating line In general no setting can be made with the setting buttons but in certain cases they can be used for making a reset No valid sensor connected 2 4 Actual value of flow temperature Temperature acquired with sensor B1 B12 in the flow of the mixing heating circuit is a criterion for the control of the mixing valve Display Unit 0 140 C 2 5 Actual value of boiler temperature Tempe...

Страница 71: ... one d h w sensor is connected lines 61 and 62 will show the same value For information about d h w heating with 2 temperature sensors refer to section Input B31 H2 2 9 Display of maximum flue gas temperature TGxmax This display shows the highest flue gas temperature acquired since the last reset Display Unit 0 350 C Using the buttons the display can be reset to the current value For that purpose ...

Страница 72: ...aefa Division 19 04 2001 2 10 Attenuated outside temperature TAxged Also refer to composite outside temperature in Index Display Unit 50 50 C 2 11 Composite outside temperature Taxgem Also refer to attenuated outside temperature in Index Display Unit 50 50 C Description Setting Description Setting ...

Страница 73: ... the bus system The controllers to which no sensor is connected adopt the outside temperature signal via the bus system from a controller to which a sensor is connected Display Unit 00 01 14 16 No signal Segment and device address The address of the outside sensor that currently delivers the outside temperature signal will automatically be displayed on this line No outside sensor signal 01 02 Addr...

Страница 74: ...stand the control sequences taking place in the controller No setpoint is displayed when there is no heat demand from the consumers 2 14 Display of common flow temperature setpoint Display of common flow temperature setpoint Better overview of the plant s operating state The current common flow temperature setpoint will automatically be displayed on this line Display Unit 0 140 C The setpoint can ...

Страница 75: ...g parameters Current time of day operating line 1 Time switch program d h w heating operating lines 19 35 Nominal setpoint of d h w temperature operating line 26 Reduced setpoint of d h w temperature operating line 120 Release of d h w heating operating line 121 Assignment of d h w operating line 123 Number of d h w heating cycles per day operating line 124 Legionella function ON OFF operating lin...

Страница 76: ...om temperature setpoint is the temperature adjusted on the controller that is aimed for in the rooms in normal operation Display Unit 0 0 35 0 C The nominal room temperature setpoint will automatically be displayed on this line The resulting nominal room temperature setpoint is made up of the adjusted setpoint and a readjustment that may have been made on the room unit Also refer to nominal room t...

Страница 77: ...al operation reduced operation Display Unit 0 35 C When selecting the operating line the current room temperature setpoint is displayed depending on the operating mode and the time switch program that is a selection combination of the following parameters Room temperature setpoint knob Reduced setpoint of room temperature operating line 27 Frost protection setpoint of room temperature operating li...

Страница 78: ...rent flow temperature setpoint of the controller s internal heating circuit is displayed Display Unit 0 140 C The value displayed corresponds to the flow temperature of the heating circuit that is required for satisfying the demand for heat The display shows in the following situations No heating circuit available ECO function active summer winter changeover automatic 24 hour heating limit Quick s...

Страница 79: ...mation about the current state of floor curing The floor curing function has a fixed profile according to which the rooms are heated to allow curing The current values of the floor curing function are displayed here The function itself is activated under setting 116 Display Unit Inactive 0 32 0 95 Day TVw 2374Z17 Benefit Description Setting Example ...

Страница 80: ...ons are active such as protective boiler start up In that case boiler temperature control by the burner must be fully ensured by the BMU If no BMU is connected heat source functions are no longer active 2 20 2 Multi stage burners Boiler temperature control Generation of the boiler temperature setpoint is accomplished based on maximum selection Also refer to generation of boiler temperature setpoin...

Страница 81: ...M The setting ensures that the boiler temperature will not fall below the adjusted minimum level 0 10 20 30 40 50 60 70 80 90 100 120 TV max min akt C 2373Z16 56 Actual value of boiler temperature 81 Minimum limitation of boiler temperature setpoint 2 OEM Maximum limitation of boiler temperature setpoint 1 OEM Lowest minimum limitation of boiler temperature setpoint If the boiler temperature setpo...

Страница 82: ... exclusively on the d h w charging pump Q3 1 ON D h w pump overrun acts on both the d h w charging pump Q3 and heating circuit pump 2 Q6 2 22 1 Extra heating for the bathroom Extra heating for the bathroom makes use of the d h w pump overrun It is used especially during intermediate seasons by supplying surplus heat to the bathroom in addition to normal bathroom heating Surplus boiler heat after a...

Страница 83: ...all room temperature setpoints will be appropriately raised or lowered This allows the room temperature setpoints to be matched to the effective room temperatures If a nominal room temperature setpoint of 20 C adjusted on the controller always produces a room temperature of 22 C displace the heating curve downward by 2 C Each setpoint readjustment be it via the setting value or the operational lev...

Страница 84: ... room temperature deviations on the temperature control Entry 0 Room influence inactive The measured room temperature will not affect temperature control 1 Room influence active The measured room temperature will affect the temperature control Room influence means Deviations of the actual room temperature from the setpoint are acquired and taken into account by temperature control To use the contr...

Страница 85: ...hed on and off less often Room temperature varies within a wider band The room temperature sensor must be active This function only acts in automatic mode The display will show ECO With pump heating circuits the amount of heat supplied is controlled by switching the pumps on and off This is accomplished with 2 position control by means of the room temperature s switching differential Functioning O...

Страница 86: ...ting on heating circuit 1 acting on heating circuit 2 Changing the operating mode or activating the holiday function on the room unit affects exclusively the respective heating circuit parallel 1 Room unit 1 A6 Room unit 2 A7 acting on heating circuit 2 acting on heating circuit 1 Changing the operating mode or activating the holiday function on the room unit affects exclusively the other heating ...

Страница 87: ...m unit values affect the selected heating circuits depending on the setting made Entry 0 Room unit 1 A6 Room unit 2 A7 acting on heating circuit 1 acting on heating circuit 2 The room unit values affect exclusively the respective heating circuit parallel 1 Room unit 1 A6 Room unit 2 A7 acting on heating circuit 2 acting on heating circuit 1 The room unit values affect exclusively the other heating...

Страница 88: ...ame space 0 0 The heating circuits are located in partly separate spaces or flats Plant types Location of heating circuits Line 103 Line 104 21 22 23 24 Not in the same space 2 0 The heating circuits are always separate Plant types Location of heating circuits Line 103 Line 104 21 22 23 24 Not in the same space 0 0 Simultaneous change of the operating mode is possible however Plant types Location ...

Страница 89: ...nt setting on line 107 The setting will make certain that the flow temperature setpoint will not fall below a minimum level 0 10 20 30 40 50 60 70 80 90 100 TV max min akt C 2373Z15 TVw TVw Current flow temperature setpoint 65 Minimum limitation of flow temperature setpoint 70 Maximum limitation of flow temperature setpoint If the flow temperature setpoint demanded by the heating circuit reaches t...

Страница 90: ...flow temperature setpoint will not exceed a maximum level Maximum limitation is not to be regarded as a safety function as required with underfloor heating systems for example 0 10 20 30 40 50 60 70 80 90 100 TV max min akt C 2373Z15 TVw TVw Current flow temperature setpoint 105 Minimum limitation of flow temperature setpoint 107 Maximum limitation of flow temperature setpoint If the flow temperat...

Страница 91: ...ol switched on 2 30 1 Optimum start control Optimum start control acts with or without room influence The maximum forward shift can be set with parameter Maximum forward shift with optimum start control range 0 6 h This parameter can also be used to switch optimum start control off setting 0 During non occupancy hours the heating is maintained at the reduced level Towards the end of the non occupa...

Страница 92: ... 1h50 2h40 3h40 4h30 0 0 0h30 1h00 1h30 2h00 2h30 10 0 0 0h10 0h10 0h20 0h20 tE TAgem Composite outside temperature tE Forward shift KON Parameter for quick setback and optimum start control without room influence KON 0 function deactivated note KON also acts on quick setback Small KON for high building structures can be heated up fairly quickly Large KON for heavy well insulated building structur...

Страница 93: ...h parameter Maximum forward shift with optimum stop control range is 0 6 h This parameter can also be used to switch optimum stop control off setting 0 During occupancy hours the heating is maintained at the nominal level Towards the end of the occupancy time the control switches to the reduced level Optimization calculates the changeover time such that at the end of occupancy time the room temper...

Страница 94: ...es at different rates depending on the building s thermal storage capacity The above setting ensures that the generation of the composite outside temperature will be matched to the type of building construction Also refer to Composite outside temperature in section Functions without settings Entry 0 Heavy building structures The room temperature will respond slower to outside temperature variation...

Страница 95: ...ons outside temperature characteristics and adaption sensitivity To achieve optimum adaption the following situations should occur as rarely as possible especially after commissioning since this would reset certain calculations required for the adaption Manual readjustment of heating curve press plus minus buttons Power failure Heating curve set to Changes to the room temperature setpoint Every da...

Страница 96: ... temperatures above 12 C the heating curve will not be adapted Example using a nominal room temperature setpoint of 20 C 0 2371D07 TA 12 4 4 12 0 5 1 f 20 ged f1 f2 ZAF1 ZAF2 f Factor f1 Factor for parallel displacement f2 Factor for slope TAged Attenuated outside temperature ZAF1 Adaption sensitivity 1 line 39OEM ZAF2 Adaption sensitivity 2 line 40OEM Diagram ...

Страница 97: ...such as shifting d h w priority Setting range Unit Factory setting 0 200 100 The gain is adjustable between 0 and 200 The setting changes the response of the mixing heating circuits to restrictions imposed by locking signals but not that of the other consumers Also refer to mixing valve restriction in index Setting Response 0 Locking signal will be ignored 1 99 Locking signal will be considered as...

Страница 98: ...he flow temperature at a predefined temperature profile with the help of the mixing valve Setting range Unit Factory setting 0 3 0 Selection of a temperature profile activates the floor curing function and the heating circuit ensures the preset flow temperatures 0 Inactive 1 Functional heating 2 Floor curing heating 3 Functional and floor curing heating 2 35 1 Temperature profile The following gra...

Страница 99: ...nd adopts the flow temperature value of day 1 The flow temperature changes dictated by the temperature profile always take place at midnight When the floor curing function is activated the mixing valve ensures that the flow temperature dictated by the temperature profile will be maintained This means that protective boiler start up or d h w heating with absolute or shifting priority have no impact...

Страница 100: ...y setting 8 TBWw C 40 TBWw Nominal setpoint of the d h w temperature setting on line 26 The temperature setpoint during reduced d h w operation will be changed 0 10 20 30 40 50 60 70 80 90 100 C 2373Z13 26 Setting Nominal setpoint of the d h w temperature 120 Setting Reduced setpoint of the d h w temperature 50 OEM Setting Maximum nominal setpoint of the d h w temperature D h w heating has 2 diffe...

Страница 101: ...al setpoint is released Outside this period of time the reduced d h w setpoint applies There is one exception function d h w push Release of d h w heating at the nominal setpoint takes place when using the following settings 0 24 hours per day 1 According to the time switch program with forward shift heating circuit 2 According to the local time switch program 3 d h w Note The frost protection tem...

Страница 102: ...lso possible to select the number of charging cycles per day This also includes the forward shift of the switch on times Also refer to d h w heating in Index 0 6 12 24 5 h 2377Z16 16 17 2 37 3 Operation according to the local time switch program 3 d h w Setting 2 For d h w heating time switch program 3 d h w of the local controller is taken into account The set switching times of that program are ...

Страница 103: ...g circuit D h w heating according to the time switch program of the local heating circuit 1 All heating circuits in the segment D h w heating according to the time switch programs of the segment heating circuits 2 All heating circuits in the LPB system D h w heating according to the time switch programs of the system heating circuits If a room unit triggers holiday mode the effect will be the foll...

Страница 104: ...g program in Index Entry 0 Once per day with a forward shift of 2 5 hours 1 Several times per day with a forward shift of 1 hour 2 39 1 Once per day with a forward shift of 2 5 hours Setting 0 The number of d h w charging cycles at the nominal temperature is limited to one per day in which case the switch on point is shifted forward by 2 5 hours With this setting the switch on point is shifted for...

Страница 105: ...r calculates the switching points with the respective switching differential as a function of the d h w temperature setpoint entered Sensor line with a short circuit fault status signal Measuring signal present d h w according to setpoint Sensor line with a short circuit no d h w When using a d h w control thermostat The controller takes into consideration the switching statuses of the control the...

Страница 106: ...50 C 56 C 60 C 70 C SD 6 C T 0 C TBWw 2371Z36 TBWw UEBW TRw SD TRw UEBW 10 C UEBW boost of flow temperature setpoint TBWw Nominal setpoint of d h w temperature TRW SD setpoint of the control thermostat minus the switching differential TRw setpoint of control thermostat point of calibration D h w control thermostat example ...

Страница 107: ...C K 16 The setting will raise the boiler temperature setpoint when there is demand for d h w Increase Heating up time will become shorter More overshoot Decrease Heating up time will become longer Less overshoot Using the two settings the controller generates the boiler temperature setpoint for d h w heating Setting on line 26 Reduced setpoint of d h w temperature Setting on line 126 Boost Total B...

Страница 108: ... In the case of tightly sized boilers and mixing heating circuits the setpoint may not be reached if the heating load is great since too much heat is required for space heating 3 Mixing heating circuit shifting pump heating circuit absolute The pump heating circuits remain locked until the d h w storage tank is heated up If the capacity of the heat source is no longer sufficient the mixing heating...

Страница 109: ...pump operation Locking signal 20 Heating circuit pump cycles Locking signal 93 Heating circuit pump OFF D h w pump system pump or boiler pump No effect Through the generation of the temperature time integral it is not only the period of time that is considered but also the extent of boiler temperature undershoot This means that when the crossing is significant the pumps will be deactivated earlier...

Страница 110: ...oreseeable period of time the actual boiler temperature TKx will lie within half the switching differential of the boiler temperature setpoint è è è è Locking signal will remain at a constant level c to d e to f Within a foreseeable period of time the actual boiler temperature TKx will lie above TKw è è è è Locking signal will be decreased f The actual boiler temperature TKx exceeds the boiler tem...

Страница 111: ...l be heated up with a diverting valve connected to terminal Q3 Y3 The charging pump operates as a function of the d h w switching differential setting 51OEM depending on the current setpoints which are activated by the d h w program setting 121 Also refer to plant diagram 1 in Index When using a charging pump d h w heating is also ensured in manual operation The diverting valve opens or closes as ...

Страница 112: ...n a system The addresses classify the controllers within a segment Address Effect Example 0 Standalone Single controllers 1 Master LPB Controllers with master function Heat generation master Consumer master in the respective segment 2 16 Slave LPB Controllers with slave functions Zone controller slave The device addresses should be assigned in consecutive order in accordance with the controllers c...

Страница 113: ...t 0 Entry of the segment address is especially important when used in a system With this setting the system can be subdivided into a number of segments 0 Heat generation segment 1 14 Heat consumer segment A bus segment is comprised of a number of devices that are used in the same place of application All devices in a segment must carry the same segment address Addressing is part of engineering For...

Страница 114: ...ower supply from the controller to the bus 1 Automatically The power supply from the controller to the bus will automatically be switched on and off depending on the requirements of the LPB The actual status of the power supply is shown on line 143 Depending on the design of the system the bus is powered either via the connected devices or by a central bus power supply The design of the bus system...

Страница 115: ...er the controller currently powers the bus LPB Display Unit ON OFF The status of the controller bus power supply will automatically be shown on this line Display ON Bus power supply currently active The controller supplies power to the bus system OFF Bus power supply currently inactive Power supply to the bus can be accomplished in different ways The respective setting is made on line 142 Benefit ...

Страница 116: ...he range of action can be defined for central changeover Changeover of operating mode HCs d h w HCs Summer winter changeover and Stand by The range of action can be defined by making the following settings 0 Changeover takes place with all controllers in the same segment 1 Changeover takes place with all controllers in the entire system LPB The setting is of importance only if the controller is de...

Страница 117: ...The setting will change the action of summer winter changeover 0 Local action Automatic summer winter changeover switches the local heating circuits 1 and 2 on and off With the local action the changeover temperatures can be set separately for each of the two heating circuits 1 Central action Automatic summer winter changeover switches the connected heating circuits in the system on and off depend...

Страница 118: ...line will only be displayed on this controller Entry 0 central stand by circuit is switched off 1 central stand by circuit is activated Segment address Effect 0 According to the setting made on line 145 1 14 Throughout the segment If central stand by on the master controller is switched on it can only be switched off again from that controller The central stand by circuit does not affect d h w hea...

Страница 119: ... adjusted The controller s time settings will not be matched to the system time Verstellung Reglerzeit Systemzeit 1 System time The time settings on the device cannot be adjusted The controller s time settings will automatically and continuously be matched to the system time Verstellung Reglerzeit Systemzeit 2 System time with adjustment Time settings on the device can be adjusted and at the same ...

Страница 120: ...se the time of day is shifted forward by one hour Setting range Unit Factory setting 01 01 31 12 tt MM 25 03 2 53 Summer wintertime changeover Automatic changeover of the yearly clock to wintertime In accordance with present international standards the change from summertime to wintertime takes place on the last Sunday in October The standard setting of the controller complies with this rule since...

Страница 121: ...ication of the connected unit is displayed The list below shows the various digits with the associated types of units Only digital peripheral devices can be connected to the controller 82 Digital room unit QAA50 83 Digital room unit QAA70 90 Digital room sensor QAA10 102 BMU only with A6 2374Z18 a b a Device identification see list b Selected setting line As soon as a device identification appears...

Страница 122: ...Changeover of operating mode HC remote telephone switch The operating mode of all heating circuits changes when contact is closed The d h w circuit remains unchanged 2 Minimum flow temperature setpoint TVHw The set Minimum flow temperature setpoint contact H of setting line 171 is activated when the contact is closed 3 Heat generation lock Handling of an analog voltage signal 4 Heat demand DC 0 10...

Страница 123: ...ll controllers in the system switch to operating mode With setting 0 d h w heating is switched off in the entire system with setting 1 it is released in the entire system With all controllers operating mode changeover with the buttons is no longer possible When the contact of the remote telephone switch opens all controllers will return to the operating mode selected last Check Buttons or flash on...

Страница 124: ... line 171 in Index When the minimum flow temperature setpoint is activated d h w is still being heated if required Optimally this function can also be accomplished with the help of terminal H2 and setting line 174 2 55 3 Heat generation lock Heat generation will be locked when a switch connected to terminal H1 e g peak load shaving via ripple control closes its contact All heat demands of the heat...

Страница 125: ...and operating line 172 setting range 5 130 C The voltage corresponding to the displayed temperature can then be calculated as follows C t Maximalwer derungs Wärmeanfor C mperatur aktuelleTe V 10 V 2 55 5 Changeover of operating mode Setting 5 6 Using a modem for example the operating mode of heating circuit 1 or 2 can be switched to stand by When the contact connected to terminal H1 is closed the ...

Страница 126: ...ature setpoint will be adjusted Prerequisite This setting is used only if one of the inputs H1 or H2 setting line 170 or 174 is set to Minimum flow temperature setpoint The boiler temperature is maintained at least at this minimum level even if the demand for heat continues to drop The switching differential in that case is the same as that with a normal temperature demand TVHw 1 2 SDK 30 20 10 0 ...

Страница 127: ...nverts the heat demand voltage signal to a temperature 2 58 Operating action contact H1 and H2 The operating action of the contact can be matched to the type of output signal delivered by a device of other manufacture More flexibility when using non Landis Staefa products both operating actions can be considered This function enables the operating action of contact H1 or H2 to be matched to the op...

Страница 128: ...is locked when the contact is closed 3 Changeover of operating mode HC1 The operating mode of heating circuit 1 will change when the contact is closed D h w heating remains unchanged The d h w circuit remains unchanged 4 Changeover of operating mode HC2 The operating mode of heating circuit 2 will change when the contact is closed D h w heating remains unchanged The d h w circuit remains unchanged...

Страница 129: ...via ripple control closes its contact All temperature demands of the heating circuits and of d h w heating will be ignored Frost protection for the boiler will remain ensured The chimney sweep function can be activated although the heat generation lock is switched on If desired this function can also be accomplished with the help of terminal H1 and setting line 170 2 59 4 Changeover of operating m...

Страница 130: ...ure TKmax No damage to the boiler resulting from condensation The boiler temperature limitations are protective functions for the boiler Setting range Unit Factory setting TKmin 120 C 80 Tkmin Minimum limitation of boiler temperature setting on line 81 The setting will change the boiler temperature s maximum limitation If the boiler temperature reaches the level set here the burner will be switche...

Страница 131: ... Increase Switching differential will become wider Fewer burner starts and longer burner running times Decrease Switching differential will become smaller More burner starts and shorter burner running times With 2 position control heat is produced at certain intervals The period of time during which heat is delivered is dependent upon the boiler mass and the amount of water contained in the boiler...

Страница 132: ...rature TKx exceeds by more than half the switching differential the currently valid boiler temperature setpoint TKw the burner will be switched off The time switching off occurs can be delayed by the minimum burner running time Also refer to setting 04OEM TKw SDK 0 1 BR 2371D01 C TKw TKw SDK TKx t 40 C BR Burner TKx Actual value of boiler temperature TKw Boiler temperature setpoint SDK Switching d...

Страница 133: ...urner will not be switched off before the set minimum time has elapsed Each time the burner is switched off the minimum burner running time will be reset if not yet elapsed If the boiler temperature exceeds the setpoint by the amount of the entire switching differential the minimum burner running time will be ignored for safety reasons 0 1 0 50 40 30 1 TK t 4 12 16 20 0 60 C TK tBRmin min TKw SDK ...

Страница 134: ...deactivate burner stage 2 according to the switching differential 3 5 1 Temperature time integral The temperature time integral is a continuous summation of the temperature differential over time In this case the decisive criterion is the difference by which the boiler temperature falls below the burner s switch on setpoint TKw SDK 2 TKx Through the generation of the temperature time integral it i...

Страница 135: ...ner stage 1 according to the set switching differential 3 6 1 Temperature time integral The temperature time integral is a continuous summation of the temperature differential over time In this case the decisive criterion is the difference by which the boiler temperature exceeds the burner s switch off setpoint TKx TKw SDK 2 Through the generation of the temperature time integral it is not only th...

Страница 136: ...er shut down were operating continue to run for the period of time set here The behavior is the same as with burner shut down when with the burner deactivated the boiler temperature demand becomes invalid Also the previous flow temperature setpoint is maintained to make certain the mixing valve will be open during the same period of time ON OFF t BR Q t TVNw TVRw 2373Z28 Y t tPN t HK ON OFF HK Ope...

Страница 137: ... one of the consumers calls for heat The effective boiler temperature setpoint is used even if it lies below TKmin operating line 81 If the boiler temperature drops below the setpoint by half the boiler s switching differential SDK 2 the burner will be put into operation until the boiler temperature has exceeded TKmin by one switching differential extended burner running time With extended burner ...

Страница 138: ...ler start up is switched off 1 Protective boiler start up is switched on Protective boiler start up is triggered via a locking signal generated by the temperature time integral Protective boiler start up leads to switching on off actions or setpoint reductions of the heating circuits depending on the type of heat consumer 3 9 1 Impact on 2 position loads Due to the deactivation of the pumps heat c...

Страница 139: ...itude and the period of time of boiler temperature undershoot Locking signal reduced to 0 Setpoint according to the normal control condition Through the generation of the temperature time integral it is not only the period of time that is considered but also the extent of boiler temperature undershoot This means that when the undershoot is significant the setpoint reduction will be greater Protect...

Страница 140: ... signal will be built up b to c and d to e Within a foreseeable period of time the actual boiler return temperature TKx will lie within half the switching differential of the boiler return temperature s minimum limitation è è è è Locking signal will remain at a constant level c to d and e to f Within a foreseeable period of time the actual boiler return temperature TKx will lie above TKw è è è è L...

Страница 141: ...the boiler pump shall be operated Setting range Unit Factory setting 0 1 0 The settings have the following meaning 0 The boiler pump operates when there is a demand for heat In that case the boiler pump responds to locking signals 1 The boiler pump operates when there is a demand for heat or when the burner operates In that case the boiler pump does not respond to locking signals protective boiler...

Страница 142: ...t cannot be attained within the required period of time Hence this setting raises the mixing valve flow temperature setpoint Setting range Unit Factory setting 0 50 C K 10 The setting raises the boiler temperature setpoint when the mixing heating circuit calls for heat Increase Reduced risk of flow temperature undershoots Decrease Flow temperature undershoots possible The controller generates the ...

Страница 143: ...thority of the room temperature influence Increase Authority of room influence will increase Decrease Authority of room influence will decrease One half of the setting made on line 31OEM is multiplied by the deviation of the room temperature setpoint from the actual value The result is then added to the room temperature setpoint TRx TRw 2 31 TRw TRwk OEM TRw Room temperature setpoint TRx Actual va...

Страница 144: ...ed buildings that cool down quickly and that require shorter heating up times 3 13 1 Quick setback without room influence Quick setback is started as soon as a change to a lower room temperature setpoint takes place e g switching times in automatic mode The heating circuit pump will be deactivated until the quick setback time has elapsed which is generated from setting 32OEM the composite outside ...

Страница 145: ... boost Heating up time will become shorter Decrease Less setpoint boost Heating up time will become longer 3 14 1 Boost heating Boost heating is started as soon as switching to a higher room temperature setpoint occurs e g switching times in automatic mode With the setting on line 33OEM the room temperature setpoint will be raised until the room is heated up TRw C The boost produces an increase in...

Страница 146: ...t The heating circuit pump will be switched on as a function of the actual outside temperature even if there is no demand for heat Outside temperature Pump Diagram 4 C Continuously ON ON 5 1 5 C ON for 10 minutes at 6 hour intervals takt 1 5 C Continuously OFF OFF Between 4 5 C different statuses can occur In that range it is important which situation had existed before If the temperature was prev...

Страница 147: ...s on off output signals that allow the motorized mixing valve to open and close For adequate control a switching differential is required When using a 2 position actuator it is therefore important that the switching differential be matched to the type of plant Also refer to switching differential of actuator in Index setting line 36OEM 3 position control delivers output signals that allow the actu...

Страница 148: ... Decrease Switching differential will become smaller More frequent and shorter heating up times smaller temperature variations Smaller temperature variations in the heating circuit 3 17 1 Control of mixing valve actuator 2 position control provides control of the motorized mixing valve by delivering pulses Generally this means The greater the amount of heat needed the longer the heating up time Y ...

Страница 149: ...circuit pump in a way that excessive flow temperatures will be compensated When overtemperature protection is provided the heating circuit pump cycles thus reducing excessive flow temperatures that lie above the setpoint The cycling period is fixed at 10 minutes ε TVwGef TRw TKxGed TRw ε On time ratio TVwGef Demanded flow temperature setpoint TRw Current room temperature setpoint TKxGed Attenuated...

Страница 150: ...t intense solar radiation or similar that might adversely affect accurate control Setting range Unit Factory setting 2 4 C 0 Heat gains are automatically considered by the controller This means that manual settings can be changed by the controller Compensation of potential constant heat sources Entry Increase For more compensation In the case of significant heat sources Decrease For less compensat...

Страница 151: ...erature range 4 to 12 C will be differently adapted depending on the level of adaption sensitivity 1 Increase More adaption Decrease Less adaption Each time a significant adaption of the heating curve between 4 and 12 C ZAF1 has taken place adaption sensitivity 1 will automatically be reduced by one step This means that the extent of adaption and thus the readjustment of the slope and the heating ...

Страница 152: ...he temperature range below 4 C will be adapted differently depending on the level of adaption sensitivity 2 Increase More adaption Decrease Less adaption Each time a significant adaption of the heating curve below 4 C ZAF2 has taken place adaption sensitivity 2 will automatically be reduced by one step This means that the extent of adaptation and thus only the readjustment of the heating curve s s...

Страница 153: ... controller s P behavior 3 23 Integral action time mixing valve Tn Adapting the control characteristic to the plant s behavior controlled system Setting the I part for control of mixing valve actuators Y1 and Y5 that can be used for heating circuit 1 and heating circuit 2 Setting range Unit Factory setting 10 873 s 120 Tn influences the controller s I behavior 3 24 Actuator running time mixing val...

Страница 154: ...d user Reduces risk of scalding Setting range Unit Factory setting 8 80 C 60 The setting will ensure maximum limitation of the nominal d h w temperature setpoint setting on line 26 0 10 20 30 40 50 60 70 80 90 100 C 2373Z13 26 Setting Nominal setpoint of the d h w temperature 120 Setting Reduced setpoint of the d h w temperature 50 OEM Setting Maximum nominal setpoint of the d h w temperature Bene...

Страница 155: ...ture variations Decrease Switching differential will become smaller More frequent and shorter heating up times smaller temperature variations 3 26 1 d h w temperature control 2 position control heats the d h w at certain intervals The duration of the heating up time is dependent on the mass of the storage tank and the amount of water contained in the tank The greater the amount of d h w needed the...

Страница 156: ...h w temperature is acquired with 2 temperature sensors connected to terminals B3 and B31 The control considers the actual values of the sensor for the higher and the lower temperature as follows D h w ON TBWx of both sensors TBWw SDBW D h w OFF TBWx of both sensors TBWw If the d h w temperature is controlled with 2 sensors the respective setting must be made on line 174 Note ...

Страница 157: ...on in Index line 37OEM This function is possible only when d h w heating is released by the d h w heating program If the legionella function is aborted during the usual time on Mondays it will be repeated the next time the d h w setpoint is changed Legionellas are viruses that can occur in hot water installations which can cause pneumonia legionnaires disease To minimize the risk it is important t...

Страница 158: ...ionella function is an adjustable temperature level to which the d h w temperature is raised when the legionella function is activated refer to section Legionella function Also refer to legionella function in Index setting line 52OEM Setting range Unit Factory setting 8 95 C 65 The setting changes the d h w setpoint during the period of time the d h w is heated up as a result of the legionella fun...

Страница 159: ...inst discharging 0 Protection against discharging is not active 1 Protection against discharging is active 2 Protection against discharging is active only when heat generation is locked When protection against discharging of the d h w is active the boost of the flow temperature operating line 126 is checked during the heating cycle If at least half the boost value is reached d h w heating will be ...

Страница 160: ...Weekday time of day 1 Actual value of the boiler temperature Actual value of the flow temperature heating circuit 3 31 Software version Straightforward display of software version in use without removing the controller The software version installed represents the state of the software available at the time the controller was produced Display Unit 00 0 99 9 Digits The software version will automat...

Страница 161: ... the controller has been in operation Display Unit 0 500 000 h The number of operating hours since the controller was first commissioned will automatically be displayed on this line The hours considered as operating hours are those during which power was supplied to the controller that is including the periods of time with no effective heating operation The number of operating hours cannot be rese...

Страница 162: ... 04 2001 4 General control processes The functions described below require no settings They are performed automatically but have an impact on the plant For the rectification of faults planning and plant maintenance it may therefore be very advantageous to know about their influence on plant operation Introduction ...

Страница 163: ...considered stem from both controller internal setpoints and setpoints transmitted via LPB Auxiliary functions such as setpoint boosts and the like are included in the setpoints actually demanded at the time A demand for d h w has priority over all other setpoint requirements which means that the required d h w setpoint will be maintained even if it is lower than that called for by a heating circui...

Страница 164: ... influence If no room unit is connected the room temperature setpoint will not be readjusted by the room influence In that case the automatic 24 hour heating limit operates according to the selected setpoint of or The temperature basis used for this process are the values of the flow temperature setpoint and the current room temperature setpoint If the flow temperature setpoint falls below the roo...

Страница 165: ... the values of the flow temperature setpoint and the current room temperature setpoint If the flow temperature setpoint corrected by the room influence falls below the room temperature setpoint plus a correction value the heating will be switched off Heating s switch off point 16 31OEM 10 S 2 TRw TVwk If the flow temperature setpoint corrected by the room influence exceeds the room temperature set...

Страница 166: ...ce e g switching times in automatic mode Quick setback is terminated as soon as the actual room temperature reaches the level of the respective room temperature setpoint TRx TRw 20 15 C t TRx 2371D08 TRw ON OFF H t TRx Actual value of the room temperature TRw Room temperature setpoint H Quick setback function Due to the readjustment of the room temperature setpoint the heating circuit pump will be...

Страница 167: ... circuit from reaching excessive temperatures caused by a defect of the mixing valve for example The function is independent of the pump heating circuit s overtemperature protection and cannot be deactivated If the flow temperature exceeds the limit value Maximum limitation of flow temperature 7 5 C fixed value the pump will be deactivated This limit function acts only with the mixing heating circ...

Страница 168: ...1 Press the line selection buttons to select line 34 2 Press the buttons for 3 seconds As soon as the display stops flashing the attenuated outside temperature is reset to the actual outside temperature The attenuated outside temperature is generated by the controller It is calculated at 10 minute intervals based on the actual outside temperature The factory setting uses a basic value of 0 C The a...

Страница 169: ...s follows Selected type of construction composite outside temperature Heavy setting 113 0 Tagem TAakt TAged Heavy setting 113 1 Tagem TAakt TAged The composite outside temperature as a compensating variable acts on flow temperature control that is thus matched to the prevailing weather conditions It also acts on the 24 hour heating limit to shut down the heating 13 14 15 16 17 2371D12 18 00 06 00 ...

Страница 170: ...d as soon as the actual d h w temperature falls below the reduced d h w setpoint line 51OEM by an amount that exceeds twice the switching differential line 120 TBWx TBWR 2 SDBw When the d h w push is triggered the storage tank is charged once until the nominal d h w temperature setpoint line 120 is reached Then normal operation according to the d h w heating program is resumed t 2371D10 TBWw TBWR ...

Страница 171: ...er circulates The mechanical parts of the pumps and the valve seats will be purged thus preventing the pumps and valves from seizing 4 9 Protection against discharging after d h w heating Inadvertent discharging of the d h w storage tank will be prevented The Protection against discharging after d h w heating prevents inadvertent discharging of the d h w storage tank resulting from the pump overru...

Страница 172: ...ut the combinations of settings pump setting heat demand where a pump runs Pump behavior with valid 1 demand for heat Application by HC via H1 H2 by d h w Q2 Pump HK1 Runs when HK1 demands heat Does not run Does not run Q6 Pump HC2 Runs when HC2 demands heat Does not run Does not run Q3 D h w pump Does not run Does not run Runs when there is demand for heat When there is no more demand for heat th...

Страница 173: ...int for the boiler is factory set at 5 C and cannot be changed Protective boiler start up remains activated within its functionality The minimum burner running time line 4 OEM is taken into consideration 4 11 2 For the d h w If then the actual value of the d h w temperature falls below 5 C TBWx 5 C the frost protection function for the d h w becomes active the actual value of the d h w temperature...

Страница 174: ...he flow temperature of the heating circuit falls below 5 C a valid temperature demand of 10 C will be generated This causes the heating circuit pump to be activated and in case of the mixing heating circuit the mixing valve actuator to be driven to the required position If the flow temperature reaches the switch off threshold of 7 C the temperature demand will be maintained for another 5 minutes T...

Страница 175: ...he missing plant types can be covered by other controllers from the ALBATROS range The plant type no is identical with the number displayed on setting line 53 5 1 Plant types B31 B3 Y1 B1 2374z16 Q3 Q2 Y5 B12 Q6 B2 K4 K5 B9 Heat source variant Plant type D h w PC MC No heat source Multi stage burner or PPS BMU x 38 x x x 12 x x 37 x x x 11 x x 122 x 2 x 123 2 x 124 x x x x 125 x x x 126 x 2 x 127 ...

Страница 176: ...lve Standalone B31 B3 Q3 2374Z19 B2 K4 K5 B9 Q2 Plant type D h w PC MC 3 x x With the multi stage heat source Q2 becomes the boiler pump 5 2 Supplementary information on the plant types listed c In the case of BMU applications B1 with d h w heating by the BMU this plant type is also shown With this application setting D h w priority of the RVA63 is not active ...

Страница 177: ...Y1 and Y2 F3 Phases Y5 and Y6 F4 Phase burner stage 1 F5 Phase burner stage 2 F6 Phases Q2 and Q6 K4 Burner stage 1 K5 Burner stage 2 L Live AC 230 V mains connection N Neutral mains connection Q2 Circulating pump mixing heating circuit 1 Q3 Y3 D h w charging pump d h w diverting valve Q6 Circulating pump mixing heating circuit 2 Y1 Mixing valve HC1 OPEN Y2 Mixing valve HC1 CLOSED Y5 Mixing valve ...

Страница 178: ... 1 2 Combination of controllers When arranging a number of controllers side by side the total length of the panel cut out must be calculated as follows The sum of all nominal lengths minus the corrective dimensions for the intermediate space e gives the total length of the panel cut out Combination e Calculation Panel cut out 96 plus 96 4 96 96 4 188 mm 144 plus 96 5 96 144 5 235 mm 144 plus 144 6...

Страница 179: ...IEC 721 3 1 Transport to IEC 721 3 2 Class 3M2 Class 1M2 Class 2M2 Mode of operation To EN 60730 par 11 4 11 4 1b Output relays Voltage range Nominal current Switch on peak Fuse AC 24 230 V 5 mA 2 A cos phi 0 6 max 10 A max 1 s max 10A Bus extension PPS Cable telephone wire Permissible cable length 2 x 0 5 mm2 interchangeable 50 m LPB Cable Permissible cable length Node spacing 2 wire not intercha...

Страница 180: ... button lights 37 C central changeover 116 central stand by switch 118 chimney sweep 42 clock mode 119 clock setting 44 119 combination of controllers 14 common flow temperature setpoint 74 communication via LPB 112 composite outside temperature 169 connection terminals 15 constant for optimum start control 144 for quick setback 144 contact H1 127 continuous display 160 continuous operation 137 co...

Страница 181: ...ocking signal gain 97 LPB device address 112 LPB power supply 114 LPB segment address 113 M maintained boiler return temperature 153 manual operation 43 master 119 maximum limitation boiler temperature 130 flow temperature 90 maximum limitation of boiler temperature 130 maximum limitation of flow temperature 90 maximum nominal setpoint of d h w temperature 154 maximum value of heat demand signal D...

Страница 182: ...luence 84 143 room temperature limitation 85 room temperature setpoint 77 room unit 121 room unit values 87 S segment address 113 segment controller 112 with master function 112 sensor test 68 setpoint boost 145 setpoint of legionella function 158 slope 1 of heating curve 56 software version 160 standard time programs 62 standard values 62 Stand by 137 summer winter changeover temperature 54 summe...

Страница 183: ... Landis Staefa Division Korrigenda 19 04 2001 Korrigenda Seite Lage Änderung 1 xx Ganzes Dokument Aufgrund einer umfangreichen Überarbeitung sind etliche neue Funktionen eingefügt sowie viele bestehende angepasst worden Eine detaillierte Aufführung der Änderungen ist daher nicht möglich ...

Страница 184: ...VA53 280 CE1P2374E Landis Staefa Division Korrigenda 19 04 2001 Siemens Building Technologies AG Landis Staefa Division Gubelstrasse 22 CH 6301 Zug Tel 41 41 724 24 24 Fax 41 41 724 35 22 www landisstaefa com 1999 Siemens Building Technologies AG Änderungen vorbehalten ...

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