Siemens LMV50 series

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Building Technologies Basic Documentation LMV5... CC1P7550en
22.05.2018
4.1.6.6 Operation indication gas / oil, type SI (X8-01) ............................................... 57
4.1.6.7 Oil pump / magnetic clutch, type No-SI (X6-02) ............................................. 58
4.1.6.8 Start signal or pressure switch relief valve, type No-SI (X4-03) ..................... 58
4.2 Control sequence ........................................................................................... 59
4.2.1 Parameters .................................................................................................... 59
4.2.1.1 Time parameter .............................................................................................. 59
4.2.1.2 Reaction time for loss of flame / safety time in operation .............................. 59
4.2.2 Gas valve proving .......................................................................................... 61
4.2.3 Special functions during the control sequence ............................................. 63
4.2.3.1 Lockout phase (phase 00) / safety phase (phase 01) .................................... 63
4.2.3.2 Repetition counter .......................................................................................... 64
4.2.3.3 Signaling of start preventions ......................................................................... 65
4.2.3.4 Safety shutdown in standby mode ................................................................. 65
4.2.3.5 Forced intermittent operation ......................................................................... 65
4.2.3.6 Prepurging ..................................................................................................... 66
4.2.3.7 Program stop function .................................................................................... 67
4.2.3.8 Gas shortage program ................................................................................... 67
4.2.3.9 Low-fire shutdown .......................................................................................... 68
4.2.3.10 Normal / direct start ........................................................................................ 68
4.2.3.11 Continuous fan operation ............................................................................... 69
4.2.3.12 Continuous pilot (only LMV50 / LMV52) ........................................................ 69
4.2.3.13 Reaction of extraneous light in standby ......................................................... 69
4.2.3.14 Startup sequence stop in phase 36 ............................................................... 70
4.2.3.15 Cooling function in standby mode (only LMV50) ........................................... 70
4.2.3.16 Long postpurge time (only LMV50 / LMV52.4) .............................................. 70
4.2.4 Selection of fuel ............................................................................................. 71
4.2.5 Auxiliary functions .......................................................................................... 72
4.2.5.1 Hours run counter .......................................................................................... 72
4.2.5.2 Start counter / startup counter ....................................................................... 72
4.2.5.3 End of life cycle function ................................................................................ 72
4.2.5.4 Fuel meter ...................................................................................................... 72
5 Sequence diagrams ..................................................................................... 73
6 Fuel-air ratio control (FARC) ....................................................................... 84
6.1 Actuator addresses ........................................................................................ 84
6.2 Activating / deactivating the actuators ........................................................... 85
6.3 Direction of rotation of the actuators .............................................................. 86
6.4 Control sequence ........................................................................................... 87
6.4.1 Idle position .................................................................................................... 87
6.4.2 Prepurge positions ......................................................................................... 87
6.4.3 Ignition positions ............................................................................................ 87
6.4.4 Startpoint operation ........................................................................................ 88
6.4.5 Approaching low fire in phase 50 / 54 ............................................................ 89
6.4.6 Postpurge positions ....................................................................................... 90
6.4.7 Actuator speed outside normal operation = TmNoFlame .............................. 90
6.4.8 Actuator speed in normal operation = OperatRampMod ............................... 91
6.4.9 Multistage operation ....................................................................................... 92
6.5 Position check, dynamic safety time .............................................................. 93
6.6 Special features ............................................................................................. 96
6.6.1 Program stop ................................................................................................. 96
6.6.2 Limitation of load range .................................................................................. 97
6.6.3 Masking out a load range ............................................................................... 98
6.6.4 Traveling times ............................................................................................... 98
6.6.5 Shutdown behavior ........................................................................................ 98
6.6.6 Overload protection ........................................................................................ 99