114
FMS Fault Correction
Parameters (P)
Aids
P53
used to set the burner pre-ventilation time. This setting is undertaken
Parameter 785
by the person commissioning the unit.
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P55
This allows the display format to be configured.
Parameters 850 to 885
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P60
The servicing mode can be set in this parameter. The servicing mode serves
Parameter 787
for setting the pilot burner. It allows 5 ignition attempts to be made in
succession without having to go through pre-ventilation in order to start again.
The control unit runs only until the stabilisation time. The main valves cannot
be opened until this parameter has been reset.
ATTENTION:
Where a fault is reset with a long reset, the maintenance mode counter is
also reset, i.e. the next startup takes place with pre-ventilation.
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P62
The FMS generally monitors again for a period of 5 seconds after shut-off to
Parameter 789
check whether the flame signal has really gone out. This parameter can be
used to set the number of seconds for which this monitoring occurs after
shut-off. Before setting this parameter it must be ensured that the system
reliably waits at least for the after-burning time of the burner in order to avoid
incorrect fault signals. If the parameter is set to "0”, the flame signal is no
longer monitored after shut-off.
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P71
This is used to set the re-circulation damper delay in seconds.
Parameter 427
For details of the effect of this parameter, see Appendix.
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This parameter has a double function:
If the unit is configured as VMS, a threshold value in points is given here
(see VMS Commissioning Instructions)
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P72
In order to prevent excessively high current consumption by the fan during
Parameter 768
star-delta starting, this setting can be used to ensure that the dampers remain
closed for a few seconds after the start command.
These parameters are only meaningful when leakage testing is integrated
Parameters 769 und 772
into the FMS.
This can be used to select whether a leakage test is to be performed before
ignition, after switching off or in both cases. The leakage test can be
switched off by setting both parameters to "0”. If a leakage test after
switching off is selected, it is also performed before the next startup in the
event of fault switch-off or a power failure.
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P54
This is
