49
4 Appendix
Caption to the process sequence charts
* if output regulator in the unit is activated, the signal is linked with the internal burner-start of
this regulator.
** If the re-circulation signal is absent, re-circulation valves remain closed or run closed (ex-
pect at pre-ventilation).
*** Signal on terminal 1 clears the time t3, t4, at the end of t1. The leakage test, if integrated,
runs although.
**** For determination of the total safety times, according to the standards, you may have to
add the reaction time of the flame monitor to the settings of the FMS (type. 1 sec.)
Any condition
t1 wait for SIC gas
air pressure monitor min. scan
any
t2 time for pressure build-up in the gas test line (only
available if leakage test is activated)
2 sec.
t3 running time servo drive 30-60 sec.
t4 delay re-circulation dumper 0-t5
t5 aeration time 30-999 sec. adjustable
t6 pre-ignition time 3 sec.
t7 1
st
safety time 4 sec.****
t8 stabilisation time 3 - 10 sec. adjustable
t9 2
nd
safety time 2 sec.****
t10 operating phase any
t11 control mode any
t12 time for pressure reief in the gas test line 3sec.
t13 post-ventilation time 0-999 sec. adjustable
t14 control elements at base load
t15 afterburning time 0-20 sec.*** adjustable
t16 flame extinguishing check 5 sec.
t17 leakage test gas valve 2 30 sec.
t18 Triac selftest
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