Siemens LMV50 Series Manual page 173

15. Setting the curve
First setting
Β
Menu level 1 Menu level 2
Params & Display
RatioControl
Building Technologies
The burner travels to the ignition load. The burner's output should now be increased
manually and in steps of the curve settings until the rated capacity (100%) is reached.
During the manual action, the actuators travel on the interpolated straight line to the
maximum position of 90° for 100% output. The flue gas values and the stability of the
flame must be constantly checked. It may be necessary to define provisional
curvepoints, which can be canceled again later. As soon as the rated capacity is
reached, the burner should be optimized with regard to flue gas values.
Note!
So that the precontrol of the O2 trim control can work correctly, the loads (%) must be
parameterized on the curve points in accordance with the actual burner output (kW).
Example: 2,000 kW burner:
∂
100% curve point: 2,000 kW ≈ 200 m³/h natural gas
∂
- 75% curve point: 1,500 kW ≈ 150 m³/h natural gas
∂
- 50% curve point: 1,000 kW ≈ 100 m³/h natural gas
This can be achieved by measuring the amount of fuel with a fuel meter when setting,
for example.
∂ Press Esc to leave the curvepoint setting
∂ Store the curvepoint by pressing Enter
∂ Now, select the second curvepoint. The settings of the previous curvepoint are
adopted on a preliminary basis
∂ Store the second curvepoint like the first one
During storage, the LMV5 sorts the curvepoints based on rising output. This means that
you can enter the curvepoints in any order you like as long as the output was correctly
set. Proceed this way point by point until the minimum output is reached. After storage
of the minimum output point, leave the curve settings.
Menu level 3
GasSettings
*) Not a parameter name, but a term of curve parameterization
Basic Documentation LMV5...
9 Commissioning instructions for the LMV5
Menu level 4 Menu level 5
CurveParams
*) Point
*) Manual
Menu level 6
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CC1P7550en
22.05.2018