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Building Technologies
Basic Documentation LMV27...
CC1P7541en
1 Safety notes
17.12.2018
1 Safety
notes
1.1 Warning
notes
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
LMV27 are safety devices! Do not open, interfere with or modify the units.
Siemens does not assume responsibility for damage resulting from unauthorized
interference!
Additional safety notes contained in other chapters of this document must be
observed as well!
After commissioning and after each service visit, check the flue gas values
across the entire output range!
The present Basic Documentation describes a wide choice of applications and functions
and shall serve as a guideline. The correct functioning of the units is to be checked and
proven by function checks on a test rig or on the plant itself!
All activities (mounting, installation and service work, etc.) must be performed by
qualified personnel
Degree of protection IP40 as per DIN EN 60529 for the LMV27 must be ensured
through adequate mounting by the burner or boiler manufacturer
Before performing any work in the connection area of the plant, disconnect the unit
from the mains supply (all-polar disconnection). Ensure that the plant cannot be
inadvertently switched on again and that it is indeed dead. If not disconnected, there
is a risk of electric shock hazard
Protection against electric shock hazard on the LMV27 and on all connected
electrical components must be ensured through adequate mounting. In terms of
design, stability and protection, the cover used must conform to EN 60730
After each activity (mounting, installation and service work, etc.), check to ensure
that wiring is in an orderly state and that the parameters are correctly set
Fall or shock can adversely affect the safety functions. Such units must not be put
into operation even if they do not exhibit any damage
When programming the air-fuel ratio control curves, the commissioning engineer
must constantly watch the quality of the combustion process (e.g. by means of a
flue gas analyzer) and, in the event of poor combustion values or dangerous
conditions, take appropriate actions, e.g. by shutting down the LMV27 manually
The following plug-on terminations carry FELV (Functional Extra Low Voltage) (also
refer to chapter
Electrical connection of the LMV27
) which means that they do not
provide safe separation from mains voltage:
- The BCI (X56) for the connecting cable of the AZL2 or PC software ACS410
- COM (X92) for accessories, such as the OCI410
These plug-on terminations may be removed or replaced only when the plant is dead
(all-polar disconnection)
The plugs of the connecting cables for the LMV27 or other accessories, such as the
OCI410 (plugged into the BCI), may only be removed or exchanged when the plant
is shut down (all-polar disconnection), since the BCI does not provide safe
separation from mains voltage
The connections for the SQM3 or SQN1 actuators do not provide safe separation
from mains voltage. Prior to connecting or changing one of these actuators, the
plant must be shut down (all-polar disconnection)
