Notes On Settings And Parameter Settings - Siemens LMV37.4 Series Basic Documentation

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Building Technologies Division
Industry Sector
1.7

Notes on settings and parameter settings


When adjusting the electronic air-fuel ratio control system integrated in the
LMV37.4..., allow for sufficient amounts of excess air since – over a period of time –
the flue gas settings are affected by a number of factors (e.g. density of air, wear of
actuators and controlling elements, etc.). For this reason, the flue gas values initially
set must be checked at regular intervals

To safeguard against inadvertent or unauthorized parameter transfer from the PC
software to the basic unit, the OEM must assign an individual burner
identification (ID) for each burner. Compliance with this regulation is mandatory to
ensure that the LMV37.4... system prevents the transfer of parameter sets of some
other plant (with inadequate and possibly dangerous parameter values) to the
LMV37.4... system via the PC software. In addition, the air-fuel ratio control
parameters must be manually approached and the combustion values checked

With the LMV37.4... system, it is to be noted that the unit's characteristics are
determined primarily by the specific parameter settings rather than the type of unit.
This means that, among other things, each time a plant is commissioned, the
parameter settings must be checked and the LMV37.4... must not be transferred
from one plant to another without adapting the parameter settings to the new plant

When using the ACS410 PC software, the safety notes given in the relevant
Installation and Operating Instructions (J7352) must also be observed

A password protects the parameter level against unauthorized access. The OEM
allocates individual passwords to the setting levels he can access. The default
passwords used by Siemens must be changed by the OEM. These passwords are
confidential and may only be given 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 – made changes to the respective setting level
In particular, the OEM (burner and / or boiler manufacturer) assumes
responsibility for the correct parameter settings in compliance with the standards
covering the specific applications (e.g. EN 676, EN 267, EN 746-2, etc.).
Basic documentation LMV37.4...
1 Safety notes
CC1P7546en
20.09.2013