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Building Technologies Basic Documentation LMV5... CC1P7550en
8 Display and operating unit AZL5 22.05.2018
8.3.6.2 Curve setting via manual operation
In addition to curve settings by means of individual point entry, it is also possible to
adjust the burner in manual operation with optional point storage.
The procedure is the following:
After leaving menu item CurveParams, position the pointer on Man when reaching the
menu.
- Pointer positioned on Man:
P o i n t | L o a d : 2 3 . 5
| F u e l : 2 3 . 2
M a n | A i r : 4 1 . 6
| A u x : 3 3 . 3
When pressing Enter, the following display appears:
O 2 | L o a d : 2 3 . 5
4 . 5 | F u e l : 2 3 . 2
M a n | A i r : 4 1 6
: 2 3 . 5 | A u x : 3 3 . 3
This menu enables the installer to manually change the output by using incrementing or
decrementing commands, letting the actuators operate on interpolated straight lines
(outside the parameterized curvepoints: Extrapolation). Above that, the currently
acquired O2 value is now shown if a PLL52.110A200 and a QGO20 are connected to
the system.
Traveling to the output preset here can be stopped by pressing Esc.
The actual curve settings are made by adjusting the entire fuel-air ratio control system
based on the roughly predefined curvepoints and outside the defined points. After
pressing Enter again, new points can be introduced at the required positions.
Then, the values can be changed:
P o i n t | L o a d : 2 8 . 5
: 3 | F u e l : 2 8 . 4
O 2 | A i r : 4 5 . 2
4 . 5 | A u x : 3 1 . 3
The further setting procedure is the same as that used with Edit individual point.
Example: Adjustment of the fuel-air ratio control system via manual control
Prerequisite: No curvepoints parameterized.
1. Activating program stop
Via menu: Params & Display ↑ RatioControl ↑ Program Stop
↑ parameterize from deactivated set 24 PrePurgP
2. Starting the system
Via menu: Params & Display ↑ RatioControl ↑ Autom/Manual/Off
or via: Manual Operation ⇓ Autom/Manual/Off ↑ Manual
and confirm.
3. Setting the prepurge positions
The system commences the startup sequence and stops in phase 24 PrePurgP. Now,
the prepurge positions can be set on menu SpecialPositions. Then, on ProgramStop,
change to 36 IgnitPos.
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