53
7 O
2
Trim
Recommended settings:
for P 901 / P 902 and P 917 / P 918
Base value for deactivated O
2
trim = neutral value
Base value for air deficiency < base value for deactivated O
2
trim
NOTICE
The neutral value is obtained from the selected correction mode:
+50%/-50% neutral value 500 = 50% correction mode
+60%/-40% neutral value 600 = 60%
The following approximate overall picture results for burner output:
Fig. 7-8 factory settings
8 → correction input base value for deactivated O
2
trim
P 901/P 902
9 → correction input base value for air deficiency
P 917/P 918
Parameter Factory Settings
901/902 Base value for “Deactivated O
2
trim” = 300
917/918 Base value for "Air deficiency” = 150
Nr. FMS ETA
/FA1
Short Text Description Min Max Default
897 1 1 O2Stoer Safety shut-down by O
2
/CO controller allowed? (0-
never, 1-when insufficient air)
010
In case of a fault of the O
2
trim, the O
2
trim will be deac-
tivated. Depending on the cause, the defined correction
value for "deactivated O
2
trim" or "air deficiency" will be
the output value. The burner does not shut down (con-
tent 0).
You can pre-select, if the fault "air deficiency"(content 1)
results in a burner shut-down.
898 0 0 O2-TotZ Dead time of O
2
controlled system 3 40 15
Dead time of the O
2
controlled system in seconds.
Target values for 2 / 3 -passboiler: 12 seconds
899 0 0 O2-P-Fak O
2
P-Term 1 50 5
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