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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 13.08.2004
− 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 «PS 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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