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

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Building Technologies Division
Industry Sector

10.6 Notes on settings and parameter settings


When making the settings for the electronic air-fuel ratio control system integrated
in the LMV37.4..., it must be ensured that sufficient amounts of excess air are
available because over a period of time, the flue gas values are impacted by a
number of factors, such as air density, 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 accidental or unauthorized transfer of parameters from the
parameter backup of the ACS410 to the LMV37.4... basic unit, the OEM (burner or
boiler manufacturer) must enter an individual burner identification for every
burner. Only when this requirement is satisfied does the LMV37.4... system make
certain that the ACS410 does not transfer a parameter set from a plant (with
unsuited and possibly dangerous parameter values) to the LMV37.4... basic unit

With the LMV37.4..., it should be noted that the unit's characteristics are determined
primarily by the parameter settings and not so much by the type of unit. This means
that – among other considerations – the parameter settings must always be
checked prior to commissioning the plant, and that the LMV37.4... must never be
transferred from one plant to another without adapting its parameters to the new
plant

When using the ACS410 PC software, the safety notes given in the relevant
Operating Instructions (J7352) must also be observed

The parameter level is password-protected. The OEM assigns individual passwords
to the parameter levels he can access. The unit is supplied with default passwords
entered by Siemens; they must be changed by the OEM. These passwords are
confidential and may be assigned to authorized personnel only

Fidential and may only be assigned to authorized staff

The responsibility for setting parameters is assumed by the person who, in
accordance with the access rights, has made changes on the respective setting
level
In particular, the OEM assumes responsibility for the correct parameter settings
in compliance with the standards covering the specific applications (e.g.
EN 676, EN 267, EN 1643, etc.).
Basic documentation LMV37.4...
10 Electronic air-fuel ratio control
CC1P7546en
20.09.2013