O
2
min. value control
When setting for the first time
O2 monitor
should be deactivated with
man deact
.
Params. & Display
O2Contr/Guard
FuelSettings
OptgMode
man deact
Set O
2
min. value control as low as possible to ensure a high availability. O
2
min. value
is between the permanently non-hazardous range and the potentially hazardous range.
O
2
ratio curve is set at lowest 0.5 %–1 % above O
2
min. value, so during normal burner
operation this level should not be reached.
Hazardous conditions must not permanently occur above or at O
2
min.
value.
Maximum permitted values: CO = 4000 ppm, #2 on the Shell-Bacharach scale.
Values may vary depending on the type of the configuration.
If you change the ratio curves at a later date, the minimum value must
also be readjusted.
O
2
min. value direct entry
1. Select
O2 Monitor
from menu as follows:
Params. & Display
O2Contr/Guard
Fuel Settings
O2 Monitor
2. If the limit values of a plant are known, O
2
min. values can be entered directly to
curve points during burner operation.
The first line shows curve point number. Scroll through points by pressing the
Select -/+
buttons. By pressing
Enter
twice, you can enter residual oxygen level as
percentages to the second line. Use the
Select -/+
buttons.
Point26 ver. 4
3. Accept the value by pressing
Enter
. Exit by pressing
Esc
.
M4263 2206EN
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