Siemens LMV5 Series Basic Documentation page 5

Siemens Building Technologies
HVAC Products
Outputs valves -gas, type SI (V..., SV, PV) X9-01 ............................... 39
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Output oil pump / magnetic clutch, type No-SI X6-02 .......................... 40
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Output «Start signal» or «PS valve» (APS test valve) type No-SI
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(START) X4-03 .................................................................................... 40
1.1 Program sequence ........................................................................................ 41
1.1.1 Parameters .................................................................................................... 41
Time parameters................................................................................... 41
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1.1.1 Gas valve proving.......................................................................................... 42
Recommendation .............................................................................. 42
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Determination of VP leakage rate ..................................................... 43
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1.1.1 Special functions during the program sequence ........................................... 44
Lockout phase (Phase 00) .................................................................... 44
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Safety phase (Phase 01) ...................................................................... 44
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Reset / manual lockout ......................................................................... 44
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Characteristics .................................................................................. 44
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Characteristics .................................................................................. 44
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Signaling start preventions ................................................................... 45
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Forced intermittent operation ................................................................ 45
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Program stop function........................................................................... 45
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Gas shortage program .......................................................................... 46
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Sequence diagram ............................................................................ 46
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Part load shutdown ............................................................................... 46
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Normal / direct start .............................................................................. 47
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Continuous fan operation...................................................................... 47
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Response to extraneous light in standby .............................................. 47
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1.1.1 Selection of fuel ............................................................................................. 48
Selection of fuel with ............................................................................. 48
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the fuel selector on the LMV5... ............................................................ 48
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Selection of fuel .................................................................................... 48
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on the AZL5... ....................................................................................... 48
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Selection of fuel via BACS (modbus /ebus ........................................... 48
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Fuel changeover ................................................................................... 48
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1.1.1 Sequence diagrams....................................................................................... 49
Direct gas ignition ................................................................................. 49
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Gas pilot ignition 1 ................................................................................ 50
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Gas pilot ignition 2 ................................................................................ 51
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Light oil direct ignition ........................................................................... 52
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Heavy oil direct ignition ......................................................................... 53
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Light oil with gas pilot ignition ............................................................... 54
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Heavy oil with gas pilot ignition ............................................................. 55
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Legend to the sequence diagrams ....................................................... 56
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1 Fuel / air ratio control (FARC) .................................................................... 57
1.1 General.......................................................................................................... 57
1.1.1 Program sequence ........................................................................................ 57
Standby................................................................................................. 57
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Preventilation ........................................................................................ 57
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Ignition .................................................................................................. 58
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Traveling to the operating position........................................................ 58
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Operation .............................................................................................. 58
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End of operating position ...................................................................... 58
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Postpurging........................................................................................... 59
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Basic Documentation LMV51...
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CC1P7550en
01.10.2003