Siemens LMV51 Series Basic Documentation page 6

Burner control with integrated fuel / air ratio control and load control, load control including o2 trim control for forced draft burners
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Siemens Building Technologies
HVAC Products
5.1.1
Program sequence.........................................................................................60
Standby .................................................................................................60
Preventilation ........................................................................................60
Ignition...................................................................................................61
Traveling to the operating position ........................................................61
Operation ..............................................................................................61
End of operating position ......................................................................61
Postpurging ...........................................................................................62
Actuator speed outside normal operation .............................................62
Operating position .................................................................................62
Modulating .........................................................................................62
Multistage operation ..........................................................................63
5.1.2
Position check................................................................................................64
Dynamic safety time ratio control ..........................................................64
Outside the operating position ..............................................................66
Operating position modulating ..............................................................66
Operating position multistage................................................................66
5.1.3
Special features .............................................................................................66
Program stop.........................................................................................66
Direction of rotation of actuators ...........................................................66
Limitation of the load range...................................................................67
Activation of actuators / VSD ................................................................68
LMV51... ............................................................................................68
LMV52... ............................................................................................68
Number of fuel actuators .......................................................................68
Traveling times ......................................................................................68
Shutdown behavior ...............................................................................68
Overload protection of actuators ...........................................................68
Curve adjustment ..................................................................................68
6
6.1
General ..........................................................................................................69
6.2
Connection diagram.......................................................................................69
6.3
Operating modes with the load controller ......................................................69
Operating mode 1 (ExtLC X5-03)..........................................................70
Operating mode 2 (intLC)......................................................................71
Operating mode 3 (int LC bus)..............................................................71
Operating mode 4 (int LC X62) .............................................................72
Operating mode 5 (Ext LC X62) ............................................................72
Operating mode 6 (Ext LC bus) ............................................................73
6.3.1
Operating mode changeover to internal load controller .................................73
6.4
Control (characteristics) .................................................................................74
Operating mode ....................................................................................74
6.4.1
Integrated 2-position controller (C = ON / OFF).............................................74
General .................................................................................................74
Switching differentials........................................................................74
6.4.2
Modulating control..........................................................................................75
General .................................................................................................75
Function diagrams.................................................................................75
Control parameters ...............................................................................75
Manual setting of the control parameters ..........................................75
Basisdokumentation LMV5...
CC1P7550en
13.08.2004

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