Warm Settings For Modulating Mode ("G Mod", "Gp1 Mod", "Gp2 Mod" And "Lo Mod") - Siemens LMV37.4 Series Basic Documentation

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 InFo . 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
Note
If, during the time the curve is parameterized, an error occurs which leads to safety shutdown,
parameterization of the curve is quitted.
P
P
P
P
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Basic documentation LMV37.4...
26 Parameter level
Identification of start for setting the curve parameters.
When there is a request for heat.
/reset
Phase Standby (stationary)
Phase Fan ramp up (fan motor = ON, safety valve = ON)
Phase Traveling to prepurge
Phase Prepurging
position
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CC1P7546en
01.12.2009