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Building Technologies Basic Documentation LMV5... CC1P7550en
5 Sequence diagrams 22.05.2018
Phases
00  Lockout phase
01  Safety phase
10 Homerun
12  Standby (stationary)
21  Shutoff valve ON (start release)
22  Fan motor ON
24  Prepurge position
30  Prepurge time (tv1)
32  Prepurge time (tv)
34  Prepurge time (tv2) (flue gas recirculation FGR)
36  Ignition position
38  Preignition (Z) ON
40  Burner valve ON
42  Ignition OFF
44  Interval 1 (ti1)
50 2
 safety time
52  Interval 2 (ti2)
54  Low-fire position
60  Operation 1 (stationary)
62  Operation 2
Low-fire position
70  Postburne time
72  Postpurge position
74  Postpurge time (tn1)
76  Flue gas recirculation postpurge position
78  Postpurge time (tn3)
79  Direct start
80  Valve proving evacuating  time
81  Valve proving time atmospheric pressure
82  Valve proving filling time
83  Valve proving time gas pressure
Legend to the sequence diagrams