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Contents
1 Safety notes .................................................................................................15
1.1 Warnings .......................................................................................................15
1.2 Mounting notes ..............................................................................................16
1.3 Installation notes............................................................................................16
− Only for US: Interference caused by high-frequency energy ............16
1.4 Electrical connection of ionization probe and flame detector ........................17
1.5 Commissioning notes ....................................................................................17
1.6 Setting and parameter setting notes..............................................................17
1.7 Norms and standards ....................................................................................18
1.8 Service notes.................................................................................................18
1.9 Disposal notes ...............................................................................................18
2 General .........................................................................................................19
2.1 Brief description.............................................................................................19
− Basic diagram .......................................................................................19
2.2 Product range overview.................................................................................21
− ACS450 ................................................................................................21
− AGG5.110.............................................................................................21
− AGG5.220.............................................................................................21
− AGG5.310.............................................................................................21
− AGG5.630.............................................................................................21
− AGG5.631.............................................................................................21
− AGG5.635.............................................................................................21
− AGG5.640.............................................................................................21
− AGG5.641.............................................................................................21
− AGG5.720.............................................................................................21
− AGG5.721.............................................................................................21
− AGO20..................................................................................................21
− AZL51... ................................................................................................21
− AZL52... ................................................................................................21
− KF8893 .................................................................................................21
− PLL52.110A100 ....................................................................................21
− PLL52.110A200 ....................................................................................21
− QGO20... ..............................................................................................21
− QRI2A2... ..............................................................................................22
− QRI2B2... ..............................................................................................22
− FGT-PT1000.........................................................................................22
− SQM45.291A9 ......................................................................................22
− SQM45.295A9 ......................................................................................22
− SQM48.497A9 ......................................................................................22
− SQM48.697A9 ......................................................................................22
2.3 Type summary LMV5... .................................................................................23
− LMV51.000B1 .......................................................................................23
− LMV51.000B2 .......................................................................................23
− LMV51.040B1 .......................................................................................23
− LMV51.100B1 .......................................................................................23
− LMV51.100B2 .......................................................................................23
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− LMV51.140B1 .......................................................................................23
− LMV51.200A1 .......................................................................................23
− LMV51.200A2 .......................................................................................23
− LMV52.200A1 .......................................................................................23
− LMV52.200A2 .......................................................................................23
− LMV52.240A1 .......................................................................................23
− LMV52.240A2 .......................................................................................23
2.4 Block diagram inputs / outputs.......................................................................24
− Block diagram (cont‘d).......................................................................25
− Block diagram (cont‘d).......................................................................26
3 Fuel train applications (examples) .............................................................27
− Direct gas ignition..................................................................................27
− Gas pilot ignition 1.................................................................................27
− Gas pilot ignition 2.................................................................................27
− Fuel valve control program....................................................................27
− Fuel train applications (cont‘d) ..............................................................28
− Direct ignition with light oil, multistage ..................................................28
− Direct ignition with light oil, modulating .................................................29
− Fuel valve control program....................................................................29
− Direct ignition with heavy oil, multistage ...............................................30
− Direct ignition with heavy oil, modulating ..............................................30
− Fuel valve control program....................................................................31
− Dual-fuel burner gas / light oil with gas pilot ignition .............................32
− Fuel valve control program....................................................................32
− Dual-fuel burner gas / heavy oil with gas pilot ignition ..........................33
− Fuel valve control program....................................................................33
4 Burner control ..............................................................................................34
4.1 Description of inputs and outputs...................................................................34
− Flame signal input and flame detector X10–01 and X10–03 ................34
− Self-test function LMV5... / QRI... ......................................................34
− Separate flame supervision, only with LMV52... ...................................34
− Application example ..........................................................................35
− Implementation ..................................................................................35
− Technical data, flame supervision........................................................35
− QRI (suited for continuous operation) ...................................................35
− Connection diagram ..........................................................................35
− IONIZATION (suited for continuous operation) .....................................36
− QRB... (for intermittent operation only) .................................................36
4.1.1 Digital inputs ..................................................................................................37
− SAFETY LOOP X3–04..........................................................................37
− FLANGE X3–03 ....................................................................................37
− Inputs for external controller (ON/OFF) X5–03 .....................................37
− 2 inputs (ON / OFF or STAGE2 / STAGE3) ..........................................38
− X5–03....................................................................................................38
− Air pressure switch (APS) X3–02..........................................................38
− Pressure switch-VP-gas / LT or closed position indicator (CPI) X9–03 39
− Pressure switch-min-gas, start release gas (PSmin-gas) X9–03..........39
− Start release gas X7–03 (only with LMV52...).......................................40
− Pressure switch-max-gas, (PSmax-gas) X9–03 ...................................40
− Pressure switch-min-oil (PSmin-oil) X5–01...........................................40
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− Pressure switch-max-Oil (PSmax-Oil) X5–02.......................................41
− Start release-oil (START) X6–01 ..........................................................41
− Direct heavy oil start (HO-START) X6–01 ............................................41
− Fan contactor contact (FCC) or FGR-PS X4–01...................................41
4.1.2 Digital outputs................................................................................................42
− Alarm output, type No-SI X3–01 ..........................................................42
− Output fan, type No-SI X3–01...............................................................42
− Output ignition, type SI (IGNITION) X4–02...........................................42
− Outputs valves-oil , type SI (V...) X8–02, X8–03, X7-01, X7-02 ...........42
− Outputs valves -gas, type SI (V..., SV, PV) X9–01 ...............................42
− Output oil pump / magnetic clutch, type No-SI X6–02 ..........................43
− Output «Start signal» or &#171

S valve» (APS test valve) type No-SI
(START) X4–03 ....................................................................................43
4.2 Program sequence ........................................................................................44
4.2.1 Parameters ....................................................................................................44
− Time parameters...................................................................................44
4.2.2 Gas valve proving..........................................................................................45
− Recommendation ..............................................................................45
− Determination of VP leakage rate .....................................................46
4.2.3 Special functions during the program sequence ...........................................47
− Lockout phase (Phase 00)....................................................................47
− Safety phase (Phase 01) ......................................................................47
− Reset / manual lockout .........................................................................47
− Characteristics ..................................................................................47
− Characteristics ..................................................................................47
− Signaling star preventions ....................................................................48
− Forced intermittent operation................................................................48
− Program stop function...........................................................................48
− Gas shortage program..........................................................................49
− Sequence diagram ............................................................................49
− Part load shutdown ...............................................................................49
− Normal / direct start ..............................................................................50
− Continuous fan operation......................................................................50
− Continuous pilot control (only LMV52)..................................................50
− Response to extraneous light in standby..............................................50
4.2.4 Selection of fuel .............................................................................................51
− Selection of fuel with the fuel selector on the LMV5... ..........................51
− Selection of fuel on the AZL5................................................................51
− Selection of fuel via BACS (modbus /ebus ...........................................51
− Fuel changeover ...................................................................................51
4.2.5 Sequence diagrams.......................................................................................52
− Direct gas ignition .................................................................................52
− Gas pilot ignition 1 ................................................................................53
− Gas pilot ignition 2 ................................................................................54
− Light oil direct ignition ...........................................................................55
− Heavy oil direct ignition.........................................................................56
− Light oil with gas pilot ignition ...............................................................57
− Heavy oil with gas pilot ignition.............................................................58
− Legend to the sequence diagrams .......................................................59
5 Fuel / air ratio control (FARC) ....................................................................60
5.1 General..........................................................................................................60
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5.1.1 Program sequence.........................................................................................60
− Standby .................................................................................................60
− Preventilation ........................................................................................60
− Ignition...................................................................................................61
− Traveling to the operating position ........................................................61
− Operation ..............................................................................................61
− End of operating position ......................................................................61
− Postpurging ...........................................................................................62
− Actuator speed outside normal operation .............................................62
− Operating position .................................................................................62
− Modulating .........................................................................................62
− Multistage operation ..........................................................................63
5.1.2 Position check................................................................................................64
− Dynamic safety time ratio control ..........................................................64
− Outside the operating position ..............................................................66
− Operating position modulating ..............................................................66
− Operating position multistage................................................................66
5.1.3 Special features .............................................................................................66
− Program stop.........................................................................................66
− Direction of rotation of actuators ...........................................................66
− Limitation of the load range...................................................................67
− Activation of actuators / VSD ................................................................68
− LMV51... ............................................................................................68
− LMV52... ............................................................................................68
− Number of fuel actuators.......................................................................68
− Traveling times......................................................................................68
− Shutdown behavior ...............................................................................68
− Overload protection of actuators ...........................................................68
− Curve adjustment ..................................................................................68
6 Temperature or pressure controller (internal load controller LC)...........69
6.1 General ..........................................................................................................69
6.2 Connection diagram.......................................................................................69
6.3 Operating modes with the load controller ......................................................69
− Operating mode 1 (ExtLC X5-03)..........................................................70
− Operating mode 2 (intLC)......................................................................71
− Operating mode 3 (int LC bus)..............................................................71
− Operating mode 4 (int LC X62) .............................................................72
− Operating mode 5 (Ext LC X62)............................................................72
− Operating mode 6 (Ext LC bus) ............................................................73
6.3.1 Operating mode changeover to internal load controller .................................73
6.4 Control (characteristics) .................................................................................74
− Operating mode ....................................................................................74
6.4.1 Integrated 2-position controller (C = ON / OFF).............................................74
− General .................................................................................................74
− Switching differentials........................................................................74
6.4.2 Modulating control..........................................................................................75
− General .................................................................................................75
− Function diagrams.................................................................................75
− Control parameters ...............................................................................75
− Manual setting of the control parameters ..........................................75
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− Self-setting of control parameters (adaption)........................................76
− Adaption sequence ...............................................................................76
− Checking the control parameters..........................................................77
− Example ............................................................................................77
− Settling of the manipulated variable......................................................78
− Principle ............................................................................................78
− Description (graph)............................................................................78
6.4.3 Multistage control ..........................................................................................79
− General .................................................................................................79
− Load-dependent activation of the higher burner stages .......................79
− Function diagrams ................................................................................80
6.5 Actual values (X) ...........................................................................................81
− Input 1, TEMP, Pt100 sensor (DIN) X60...............................................81
− Input 2: TEMP. / PRESS INPUT, DC 0...10 V / DC 2...10 V / 4...20 mA
X61 .......................................................................................................81
− Measuring range temperature (can be parameterized).....................81
− Measuring range pressure (can be parameterized) ..........................81
− Input 4: TEMP, Pt1000 / LG-Ni 1000 X60.............................................82
6.6 Setpoints (W).................................................................................................83
− Internal setpoint ....................................................................................83
− Input 3: SET POINT INPUT X62...........................................................83
− External predefined setpoint .............................................................83
− External predefined load ...................................................................83
− External predefined load, modulating................................................83
− External predefined load, multistage.................................................84
− External setpoint changeover............................................................84
− External setpoints or predefined load via digital modbus / e-bus
interface ................................................................................................84
6.7 Integrated temperature limiter function..........................................................85
− TL within the scope of TRD ..................................................................85
− TL with external predefined load...........................................................85
− Requirements placed on sensor and protection pocket........................85
6.8 Cold start thermal shock protection (CSTP) ..................................................86
6.8.1 CSTP – modulating operation .......................................................................86
6.8.2 CSTP – multistage operation.........................................................................87
6.8.3 CSTP with temperature sensor in pressure plants ........................................87
6.9 Output............................................................................................................88
6.9.1 Output 4...20 mA ...........................................................................................88
− Output, modulating ...............................................................................88
− Output, multistage.................................................................................88
6.10 Multiboiler plants............................................................................................88
6.10.1 Multiboiler plants by means of an analog input .............................................88
6.10.2 Multiboiler plants by means of a digital interface...........................................88
7 Display and operating unit AZL5... ............................................................89
7.1 Assignment of AZL5… terminals ...................................................................90
− Connecting cable to the e-bus adapter.................................................91
− Connecting cable to the PC ..................................................................91
7.2 Ports of the AZL5… .......................................................................................92
7.2.1 Port for the PC...............................................................................................93
7.2.2 Connection to superposed systems ..............................................................94
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− General information and BACS functions .............................................94
− Reading eBus-specific.......................................................................94
− data....................................................................................................94
− Writing parameters ............................................................................95
− List of supported eBus commands........................................................95
7.3 Display and settings.......................................................................................96
7.3.1 Menu structure ...............................................................................................96
− Displays.................................................................................................97
− Display (cont‘d)..................................................................................98
− Displays (cont‘d) ................................................................................99
− Lockout and error messages...............................................................100
− Lockout and error messages (cont‘d) ..............................................101
− Standard parameterizations (incl. entry of password).........................102
− Entry of password (PW)...................................................................103
− Start display.....................................................................................103
− First submenu level .........................................................................104
− Second submenu level ....................................................................104
− Third submenu level ........................................................................104
− Fourth submenu level ......................................................................104
− Addressing the actuators (function assignment) ..................................105
− Direction of rotation .........................................................................106
− Reset ...............................................................................................106
− Operational status indication by LED on the actuator .....................106
− Power is fed to unaddressed actuator .............................................106
− Button for addressing is pressed (display during addressing
procedure) .......................................................................................106
− Addressing completed, normal operation of actuator ......................106
− Special function curve settings FARC.................................................107
− Special function adaption LC ..............................................................117
− Burner identification (burner ID) ..........................................................119
− Makeup of burner ID........................................................................119
− Languages ..........................................................................................119
− Real time clock and calendar ..............................................................119
− S / W changeover ............................................................................119
− Backup.............................................................................................119
− Type of battery.................................................................................119
− Adjustment of contrast (display)..........................................................120
− Shutdown function...............................................................................120
− Quick access Normal operation ..........................................................120
7.4 Safety check function...................................................................................121
− Loss-of-flame test................................................................................121
− SLT test...............................................................................................121
7.5 Menu and parameter lists ............................................................................121
− AZL5… menu structure with parameter definitions .............................121
8 Commissioning instructions for the LMV5... system .............................150
8.1 Practice-oriented setting instructions for the system configuration, the
burner control, and the electronic fuel / air ratio control system ..................................150
8.1.1 Basic configuration.......................................................................................150
− 1. Parameterizing the burner identification (burner ID) .......................150
− 2. Selecting the fuel trains...................................................................150
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− 3. Checking the inputs / outputs while taking into account the burner
and plant conditions. For details, refer to subsection 4.1.1 Digital inputs150
− 4. Setting gas valve proving................................................................151
− 5. Addressing the actuators ................................................................151
− 6. Selecting the actuator’s direction of rotation...................................152
− 7. Configuration of VSD (only LMV5x.2...) (subsection 18.1.2) ..........152
− LMV52... activating and deactivating the actuators ............................152
− 8. Setting the load controller (option)..................................................153
− 9. Selecting a temperature or pressure sensor...................................153
8.1.2 Settings for gas-fired operation ...................................................................154
− 10. Activating program stops in different program phases .................154
− 11. Checking and presetting the actuators positions for gas ignition..154
− 12. Manual startup ..............................................................................154
− 13. Actuator positions during the prepurge time .................................155
− Note:................................................................................................155
− 14. Ignition positions ...........................................................................155
− 15. Setting the curve...........................................................................156
− First setting......................................................................................156
− Changing an existing curve.............................................................157
− Creating a new curvepoint ..............................................................157
− 16. Load limits.....................................................................................157
− 17. Shutdown......................................................................................157
8.1.3 Settings for multistage firing on oil...............................................................158
− 18. Fuel changeover for firing on oil ...................................................158
− 19. Changing the burner operating mode from modulating to multistage
(only when firing on oil).......................................................................158
− 20. Activating the program stops in the different program phases .....158
− 21. Checking and presetting the ignition positions for firing on oil......159
− 22. Manual startup ..............................................................................159
− 23. Actuator positions during the prepurge time .................................159
− Note:................................................................................................159
− 24. Ignition positions ...........................................................................160
− 25. Setting the burner stages..............................................................161
− 26. Shutdown......................................................................................162
8.1.4 Extra functions of the LMV5... .....................................................................163
− 27. Valve proving (leakage test LT) ....................................................163
− Example 1 (calculation of test time)....................................................164
− Example 2 (determination of detectable leakage rate) .......................164
8.1.5 Configuration of the load controller..............................................................165
− Selection of operating mode ...............................................................165
8.1.6 Control parameters of the load controller ....................................................166
− 1. Selection of the standard parameter set.........................................166
− 2. Individual setting of the PID parameters.........................................166
− 3. Automatic adaption .........................................................................166
− Temperature limiter function ...............................................................167
− Boiler setpoints W1 and W2 ...............................................................167
− 2-position controller (C = ON / OFF)...................................................168
− Diagram...........................................................................................168
− Cold start thermal shock protection (CSTP) .......................................168
− Description ......................................................................................168
9 Connection terminals / coding of connectors...........................................170
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9.1 Connection terminals of the LMV51.000x1 / LMV51.040x1.........................170
9.2 Connection terminals of the LMV51.000x2..................................................171
9.3 Connection terminals of the LMV51.100x1 / LMV51.140x1.........................172
9.4 Connection terminals of the LMV51.100x2..................................................173
9.5 Connection terminals of the LMV51.200x1..................................................174
9.6 Connection terminals of the LMV51.200x2..................................................175
9.7 Connection terminals of the LMV52.200A2 / LMV52.240A2........................176
9.8 Connection terminals of the LMV52.200A1 / LMV52.240A1........................177
9.9 Coding of connectors ...................................................................................178
− AGG5.720 ...........................................................................................179
− AGG5.721 ...........................................................................................180
10 Description of the connection terminals (AC 120 V) ..............................181
11 Description of the connection terminals (AC 230 V) ..............................186
12 Mounting, electrical installation and service ..........................................191
− Installation ...........................................................................................191
− Electrical connections and wiring ........................................................191
− Connection of LMV5... CAN bus .........................................................191
12.1 Power supply to the LMV5... system............................................................192
− Determination of the maximum cable length.......................................195
− Types of cable.....................................................................................196
12.2 Suppliers of other accessory items ..............................................................197
− Mounting rail adapter type: USA 10 / 4,6 ............................................197
− e-bus / PC adapter part no. 230 437...................................................197
13 Duties of the authorized inspector...........................................................198
− LMV51... systems............................................................................198
− In addition with LMV52... systems ...................................................198
− Correct parameterization of the system ..............................................198
− Fuel / air ratio control system ..............................................................199
− Burner control section .........................................................................199
− O2 trim control (only with LMV52... system) ......................................200
− General ...............................................................................................200
14 Technical data ............................................................................................201
14.1 LMV5... and AZL5... .....................................................................................201
− Basic unit LMV5... ...............................................................................201
− Environmental conditions LMV5... ...................................................201
− AZL... ...............................................................................................201
− Environmental conditions AZL5.......................................................201
− LMV5... / AZL5….................................................................................202
− Types of cable.....................................................................................202
14.2 Loads on terminals, cable lengths and cross-sectional areas .....................203
− Loads on terminals..............................................................................203
− General data....................................................................................203
− Mains supply....................................................................................203
− Undervoltage ...................................................................................203
− Oil pump / magnetic clutch ..............................................................203
− APS test valve .................................................................................203
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− Status inputs (CFN).........................................................................203
− Load on terminals «outputs» ..............................................................203
− Total load on contacts .....................................................................203
− Load on individual contacts .................................................................204
− Fan motor contactor ........................................................................204
− Alarm output....................................................................................204
− Ignition transformer .........................................................................204
− Fuel valves (gas).............................................................................204
− Fuel valves (oil) ...............................................................................204
− Cable lengths......................................................................................204
− Cross-sectional areas .........................................................................204
− Fuses used in the LMV5... basic unit..................................................204
15 Dimensions ................................................................................................205
− LMV5... ...............................................................................................205
− AZL5... ................................................................................................205
16 Addendum 1: List of fault status messages of LMV5... system............206
17 Addendum 2: Connection diagram..........................................................251
18 Addendum 3: Variable speed drive (VSD) module .................................252
− General ...............................................................................................252
− Basic diagram .................................................................................252
− LMV51... Configuration of the basic unit (BU) ....................................252
− LMV52... configuration of the basic unit (BU) .....................................252
18.1 VSD module ................................................................................................253
− General ...............................................................................................253
18.1.1 Inputs / outputs ............................................................................................253
− Connection diagram............................................................................253
− Release contact X73-1 / -2 .................................................................253
− Alarm input X73-3 ...............................................................................253
− Analog output to the VSD X73-4.........................................................253
− Speed feedback signal .......................................................................254
− Speed input X70 .................................................................................254
− Safe segregation between mains voltage and protective extra lowvoltage
................................................................................................254
− Sensor disk .....................................................................................254
− Speed sensor ..................................................................................254
− Selection of fan motor .....................................................................254
− Fuel meter...........................................................................................255
− Fuel meter input X71 / X72 .................................................................255
18.1.2 Configuration of VSD...................................................................................255
18.1.3 Configuration of speed acquisition ..............................................................256
− Standardization ...............................................................................256
− Note.................................................................................................256
− Settling time ....................................................................................257
18.1.4 Configuration of current interface ................................................................258
18.1.5 Configuration of fuel meter ..........................................................................258
− Pulse value gas...............................................................................258
− Pulse value oil .................................................................................258
18.1.6 Fuel meter readings.....................................................................................259
18.1.7 Process data................................................................................................259
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18.2 Differences to LMV51.200... and LMV51.000... / LMV51.100......................260
− Special functions Curve settings for electronic ratio control................260
18.3 EMC: LMV5... system – VSD.......................................................................261
18.4 Connection terminals ...................................................................................262
18.5 Description of the connection terminals for the variable speed drive
module 263
19 Addendum 4: LMV52... with O2 trim control and O2 module ................264
19.1 General ........................................................................................................264
19.2 Functioning principle of O2 trim control .......................................................265
19.2.1 Air rate reduction..........................................................................................265
19.2.2 Definition of O2 setpoint...............................................................................265
19.2.3 Lambda factor ..............................................................................................266
19.3 Precontrol.....................................................................................................267
19.3.1 Calculation of precontrol ..............................................................................267
19.4 O2 trim control .............................................................................................268
19.4.1 Operating modes of O2 trim controller / O2 monitor ....................................268
19.4.2 Load limitation with O2 trim control..............................................................269
19.4.3 Startup .........................................................................................................269
19.4.4 Heating up the O2 sensor after &#171

owerOn»................................................269
19.4.5 Initialization of O2 trim controller..................................................................269
19.4.6 Behavior in the event of load changes.........................................................270
19.4.7 Increasing the manipulated variable in the case of a load change (offset) ..271
19.4.8 Control interventions by the O2 trim controller.............................................272
19.5 O2 monitor ...................................................................................................273
19.5.1 Delayed O2 min. value.................................................................................273
19.5.2 Switch-off criteria .........................................................................................273
19.6 Self-test........................................................................................................274
19.6.1 Sensor test...................................................................................................274
19.6.2 Checking the O2 content (20.9 %)...............................................................275
19.7 Auxiliary functions........................................................................................276
19.7.1 Warning when flue gas temperature is too high...........................................276
19.7.2 Combustion efficiency..................................................................................276
19.8 O2 module ...................................................................................................277
19.8.1 Inputs and outputs .......................................................................................277
19.8.2 CAN bus X84, X85.......................................................................................280
19.9 Configuration of O2 module.........................................................................280
19.10 Configuration of the system .........................................................................281
19.10.1 Actuators / VSDs..........................................................................................281
19.10.2 Parameterization of the type of fuel .............................................................281
19.10.3 Setting the user-defined type of fuel ............................................................282
− Preset fuel parameters ....................................................................282
19.11 Commissioning the O2 trim control system .................................................283
19.11.1 Setting ratio control ......................................................................................283
19.11.2 Setting the O2 monitor .................................................................................283
19.11.3 Direct entry of O2 min. values......................................................................284
19.11.4 Measuring the O2 min. values by lowering the air rate................................284
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19.11.5 Setting O2 trim control.................................................................................285
19.11.6 Checking and changing the controller parameters ......................................286
19.12 Setting notes................................................................................................287
19.12.1 Parameter settings ......................................................................................287
19.12.2 Setting O2 ratio control................................................................................287
19.12.3 Setting the O2 trim controller.......................................................................289
19.12.4 Other notes..................................................................................................289
19.13 Technical data .............................................................................................290
− Basic unit LMV52... .......................................................................290
− PLL52... ..............................................................................................290
− Environmental conditions ................................................................290
19.14 Terminal ratings, line lengths and cross-sectional areas.............................291
− Basic unit LMV52................................................................................291
− PLL52... ..............................................................................................291
− Analog inputs ..................................................................................291
20 Dimensions ................................................................................................291
− PLL52... ..............................................................................................291
21 Revision history.........................................................................................292
− Notes on compatibility .....................................................................292
21.1 Basic unit LMV51.........................................................................................292
− Software changes ...........................................................................292
21.1.1 Program stop ...............................................................................................292
21.1.2 Deactivating the alarm.................................................................................292
21.1.3 «GPmin» in the oil program.........................................................................292
21.1.4 «SV» oil, switch-off time ..............................................................................292
21.1.5 «DWminOil» in program «Heavy oil with gas pilot».....................................292
21.1.6 «DWminOil» is only valued during the safety time after a delay time has
elapsed 293
21.1.7 Air pressure switch test valve, inverted control ...........................................293
21.1.8 External controller contact with «Manually on» ...........................................293
21.1.9 Prepurge time after safety shutdown...........................................................293
21.1.10 Changes to the supplied parameter set.......................................................293
21.1.11 Driving to the low-fire positions....................................................................293
21.2 Basic unit LMV52.........................................................................................293
21.3 Load controller card.....................................................................................293
− Software changes of «LC»..............................................................293
21.3.1 Auxiliary sensor for cold start thermal shock protection ..............................293
21.3.2 Straightforward changeover of operation to internal load controller ............293
21.3.3 With software version V01.50 or higher, Pt100 sensors in operating mode
6 are permitted ............................................................................................................294
New load controller function for manipulated variable input and load output ..............294
− Modulating burners .........................................................................294
− Multistage burners...........................................................................294
21.3.4 Plausibility check at inputs X61 and X62.....................................................294
21.4 Display and operating unit AZL5... ..............................................................295
21.4.1 Software changes to the flash memory .......................................................295
21.4.2 New designations of load controller inputs ..................................................295
21.4.3 Fuel counter with reading in liters................................................................295
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Siemens Building Technologies Basisdokumentation LMV5... CC1P7550en
HVAC Products 13.08.2004
21.4.4 Preventing the transfer of parameter copies from new basic units to the
backup memory of the AZL5........................................................................................295
21.4.5 Parameter changes......................................................................................295
21.4.6 Name changes of load controller operating modes .....................................295
21.4.7 New display text for actuator faults ..............................................................296

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