Siemens LMV37.400A2 - Warm Settings for Pneumatic Modulating Modes; Warm Settings for Modulating Modes

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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 26 Parameter level 01.12.2009
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
Vh
mi n
s%
Bild 113/070 7
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 quitted.
P
Vh
mi n
s%
Bild 114/070 7
Phase
Standby (stationary)
P
Vhmins%
Bi ld 1 0/ 0707
Phase
Fan ramp up (fan motor = ON, safety valve = ON)
P
Vh
mi n
s%
Bild 115/070 7
Phase
Traveling to prepurge position
P
Vh
mi n
s%
Bild 116/070 7
Phase
Prepurging