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Building Technologies Basic Documentation LMV27... CC1P7541en
26 Parameter level 17.12.2018
26.11.4 Warm settings for modulating mode («G mod», «Gp1 mod», «Gp2
mod» and «Lo mod»)
Note
With the warm settings, the burner is started up after pressing the Info button. Air-fuel ratio
control can now be accurately set while the flame is present. When traveling along the
precalculated curve to high-fire point P9, all intermediate curvepoints (P2…P8) must be set.
Automatic operation is released when – after reaching P9 – the curve settings are quit by
pressing ESC. If the curve settings are aborted earlier (ESC or shutdown due to fault), start
prevention OFF UPr continues to be active until all points are set.
If required, the gas pressure can be set at the high-fire point. In case the gas pressure is
changed, all points must be checked by traveling along the curve downward and – if required
– must be readjusted.
P
Vh
mi n
s%
Bild 113/0707
Identification of start for setting the curve parameters.
reset
When there is a request for heat.
Note
If, during the time the curve is parameterized, an error occurs which leads to safety
shutdown, parameterization of the curve is quit.
P
Vh
mi n
s%
Bild 114/0707
Phase Standby (stationary)
P
Vh
mi n
s%
Bild 10/0707
Phase Fan ramp up
(fan motor = ON, safety valve = ON)
P
Vh
mi n
s%
Bild 115/0707
Phase Traveling to prepurge
position
P
Vh
mi n
s%
Bild 116/0707
Phase Prepurging
P
Vh
mi n
s%
Bild 117/0707
Phase Traveling to ignition
position
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