Siemens LMV51 Series Basic Documentation page 133

Burner control with integrated fuel / air ratio control and load control for forced-draft burners
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Example (cont'd)
Menu level 1
Menu level 2
Params & Display
LoadController
Siemens Building Technologies
HVAC Products
Setpoint
Spacing of temperature lines
corresponds to the setpoint steps
from the actual setpoint, e.g. 10 % = 1 bar
Load steps
e.g. 15 %
Burner start at
low-fire, e.g. 25 %
1.
Burner off,
Setpoint step not reached,
actual value
but max. time exceeded.
below thresh-
Therefore, increase of
old ON.
manipulated variable by
Burner will be
load step,
switched on
e.g. MaxTmeMod = 5 min.
Menu level 3
ColdStart
Basic Documentation LMV51...
7 Commissioning instructions for the LMV51... system
Threshold OFF
Load 85 %
Load 70 %
Load 55 %
Load 40 %
2.
Setpoint step is reached
before max. time has elapsed.
Increase of manipulated variable
by load step.
Menu level 4
Menu level 5
ColdStartOn
ThresholdOn
StageLoad
StageStep_Mod
StageStep_Stage
MaxTmeMod
MaxTmeStage
ThresholdOff
Actual value
10 bar = 100 %
8 bar = 80 %
7 bar
6 bar
5 bar
4 bar = 40 %
Manipulated
variable
Threshold ON
Actual value reached.
Þ
Threshold OFF
Change to control
7550d30E/0502
Menu level 6
133/157
CC1P7550en
29.05.2002

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