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Building Technologies Basic Documentation LMV5... CC1P7550en
1 Safety notes 22.05.2018
1.6 Setting and parameterization notes
∂ When adjusting the electronic fuel-air ratio control system integrated in the LMV5,
allow for sufficient amounts of excess air since – over a period of time – the flue
gas settings will be affected by a number of factors (e.g. density of air, wear of
actuating devices, etc.). For this reason, the flue gas values initially set must be
checked at regular intervals
∂ To provide protection against inadvertent or unauthorized parameter transmission
between the parameter backup memory of the AZL5 and the LMV5, the OEM (burner
or boiler manufacturer) must enter an individual burner identification (ID) for every
burner. Compliance with this regulation is mandatory to ensure that the LMV5 will
prevent parameter sets from other plant (with unsuited and possibly dangerous
parameter values) to be transmitted to the LMV5 via the backup memory of the AZL5
(also refer to the description of burner identification in chapter Display and operating
unit AZL5)
∂ With the LMV5, it is to be noted that the unit’s characteristics are determined
primarily by the specific parameter settings rather than by the type of unit. This
means that, among other things, each time a plant is commissioned, the parameter
settings must be checked, and the LMV5 must not be transferred from one plant to
another without adapting the parameter settings to the new plant
∂ In the case of dual-fuel burners and oil-firing, the short preignition (phase 38),
parameter IgnOilPumpStart, is to be selected and a magnetic clutch is to be used,
ensuring that there will be no oil pressure until this phase is reached. When using a
burner for oil alone, the magnetic clutch is not required; in that case, the long
preignition (from phase 22) must be parameterized
∂ When using the ACS450 PC software, the safety notes given in the relevant
Operating Instructions (CC1J7550) must also be observed
∂ A password protects the parameter setting level against unauthorized access. The
OEM allocates individual passwords to the setting levels it can access. The
standard passwords used by Siemens must be changed by the OEM. These
passwords are confidential and may only be passed on to persons authorized to
access such setting levels
∂ The responsibility for setting the parameters lies with the person who – in
accordance with his access rights – has made changes to the respective setting
level
In particular, the OEM will assume responsibility for the correct parameter
settings in compliance with the standards covering the specific applications (e.g.
EN 676, EN 267, EN 1643, etc.).
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