Azl Says "O2 Setpoint Must Lie 0.1% Below O2 Ratio Control" Or "O2 Setpoint Must Lie 0.1% Above O2 Min - Siemens LMV5 Series Technical Instructions

Technical Instructions
Document No. LV5‐1000
During O2 Commissioning, AZL Says "O2 Setpoint must lie 0.1% below O2 Ratio Control" or
When setting the O control curve, one of the following messages appears:
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 "O2 Setpoint must lie 0.1% below O2 Ratio Control"
 "O2 Setpoint must lie 0.1% above O2 Min".
If this is the case, check the following:
1. Ensure that there is an absolute minimum of 0.2 %O
O ratio control curve at every point on these curves.
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2. Also ensure that the %O
the O alarm curve and 0.1% O
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Note 1: In most cases, the %O
minimum. Depending on the burner characteristic, doing this may also lead to more
trouble‐free operation. See Section 6 for more information on these curves.
 It is preferable to have a 1 to 1.5% gap between the O
O control curve.
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 It is preferable to have a 1.5% gap between the O
the O
Note 2: When setting up the three O
displayed on the AZL5. These values are given on a wet basis.
A separate combustion analyzer (which typically measures dry %O
reference and to monitor CO and NOx production.
Section 7
"O2 Setpoint must lie 0.1% above O2 Min"
that is to be set on the O
2
below the O
2
gap between the curves should be larger than the absolute
2
control curve.
2
curves, these curves are set using the %O
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between the O
2
control curve is at least 0.1% O
2
ratio control curve.
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ratio control curve and
2
LMV Series
alarm curve and the
2
above
2
alarm curve and the
2
values
2
) is required for
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SCC Inc.