Siemens LMV51.100B2 - Setting the Curve; First Setting

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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 8 Commissioning instructions for the LMV5... system 13.08.2004
The burner travels to the ignition load. The burner’s output should now be increased
manually and in steps of the curve setting until the nominal capacity (100 %) is
reached. During the manual procedure, the actuators travel on the interpolated straight
line to the maximum position of 90° at 100 % output. The flue gas values and the stabil-
ity 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 nominal capacity is
reached, the burner should be optimized with regard to flue gas values.
It is recommended to measure the gas throughput at
each curvepoint in order to reflect
the real burner output on the display in relation to the maximum gas throughput.
• Press the
ESC button to leave the curvepoint setting
• Store the point by pressing
Enter
• Now, select the second curvepoint. The settings of the previous curvepoint will be
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 cor-
rectly set. Proceed in this way point by point until the minimum output is reached. After
storage of the minimum output point, leave the curve setting.
Menu level 1 Menu level 2 Menu level 3 Menu level 4 Menu level 5 Menu level 6
Params & Display
RatioControl
GasSettings
CurveParams
Point
Manual
Example:
Point 1 2 3 4 5
Order of setting 5 4 3 2 1
Output 15 % 28 % 50 % 71 % 100 %
Gas 8.6° 28.0° 43.0° 62.5° 81.5°
Air 10.5° 28.8° 46.0° 55.7° 70.8°
Aux 20.3° 30.0° 45.0° 52.0° 60.0°
90
80
70
60
50
40
30
20
10
0
0 102030405060708090100 %
Fuel / air ratio control
Load [%]
Position [°]
Gas actuator position
Air actuator position
Auxiliary actuator
7550d26E/0502
15. Setting the curve
First setting
Note