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5 Commissioning
5.1.17 Set Pilot Burner (Maintenance Mode)
Select parameter no. 787
5.1.18 Automatic Restart after Failure
Respect the directives for combustion plants, if you set this parameter.
Nr. FMS ETA Short Text Description Min Max Default
787 1 1 Wartung Maintenance mode (control unit only until stabilization
time)
020
0 = maintenance mode on (main valves are opened)
1 = maintenance mode active
2 = curve set switch allowed in set mode
Set the maintenance mode with this parameter. The
maintenance mode sets the pilot burner or the ignition
flame monitor. It enables to do 5 consecutive ignition
attempts without restarting with pre-purge and the leak-
age test. The burner sequencer only steps up to the
flame stabilisation time. You may not open the main
valves before the reset of this parameter.
After the 5
th
attempt pre-purge and leakage start auto-
matically.
Note:
A "Total Reset" resets the counter for maintenance
mode automatically i.e. the next cycle is treated as the
first and pre-purge and the leakage test are running.
Therefore, reset faults with a "Partial Reset" wherever
possible (selection switch on "Status", first channel key
2 upwards, then in addition channel key 1 downwards).
Attention: You may not use a partial reset for some
faults.
Nr. FMS ETA Short Text Description Min Max Default
836 2 2 AutStart Automatic restart after fault 0 30 0
Automatic restart of the burner on fault condition. In the
case of a fault for which the standards permit an auto-
matic restart for FMS/ETAMATIC, this parameter initi-
ates the restart.
0 = no restart of the burner
1... = automatic restart of the burner for faults, which are
marked in the list of faults. (Delay in seconds)
Selection of the standard with P 425:
0 = TDR
1 = no restart of the burner
2 = EN676 (from 5.4/5f202)
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