Siemens LMV50 series

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Building Technologies Basic Documentation LMV5... CC1P7550en
5 Sequence diagrams 22.05.2018
Assignment of times:
t0 Postpurge lockout position
t01 Max. time safety phase
t10 Min. time home run
t21 Min. time start release
t22 Fan runup time
t30 Prepurge time part 1
t34 Prepurge time part 3
t36 Min. ON time oil pump
t38 Preignition time gas/oil
t42 Preignition time OFF
t44 Interval 1 gas/oil
t62 Max. time low-fire
t70 Afterburn time
t74 Postpurge time 1 gas/oil (tn1)
t78 Postpurge time 3 gas/oil (tn3)
t80 Valve proving evacuate time
t81 Valve proving time atmospheric pressure
t82 Valve proving filling time
t83 Valve proving time gas pressure
tmn1 Min. time extraneous light test (5 s) after skipping prepurge
tmx1 Max. damper running time
tmx2 Max. time startup release
tmx3 Max. time circulation heavy oil
tn Postpurge time
TSA1 First safety time gas / oil
TSA2 Second safety time gas / oil
tv Prepurge time gas / oil
tmx4 Time until reaction to flame OFF (parameter ReacTmeLossFlame)
Legend to the sequence diagrams (cont’d)