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Siemens Building Technologies
Basic Documentation LMV5...
CC1P7550en
HVAC Products
1 Safety notes
13.08.2004
1 Safety
notes
1.1 Warnings
Observe the following warning notes to help prevent damage to persons, prop-
erty or the environment!
The LMV5... is a safety device! Do not interfere with or modify the unit. Siemens
BT will not assume responsibility for damage resulting from unauthorized inter-
ference!
The addendum to the LMV51.2... and LMV52... documentation contains additional
warning notes which should also be observed when using these system variants.
After commissioning and after each service visit, check the flue gas values
across the entire load range.
The present Basic Documentation describes a wide choice of applications and func-
tions and shall serve as a guideline. The correct functioning is to be checked and
proven with the help of functional tests on a test rig or on the plant itself!
•
All activities (mounting, installation, service work, etc.) must be performed by quali-
fied staff
•
Degree of protection IP40 as per DIN EN 60 529 for burner controls must be en-
sured through adequate mounting by the burner or boiler manufacturer
•
Before performing any work in the connection area of the LMV5…, disconnect the
unit from the mains supply (all-polar disconnection)
•
Protection against electrical shock hazard on the LMV5... and on all connected
electrical components must be ensured through appropriate mounting
•
Check to ensure that wiring is in an orderly state
•
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
•
In programming mode, the position check of the actuators and the VSD (checking
electronic fuel / air ratio control) is different from the check during automatic opera-
tion. Like in automatic operation, the actuators are still jointly driven to their re-
quired positions. If an actuator does not reach the required position, corrections are
made until that position is reached. However, in contrast to automatic operation,
there are no time limits for these corrective actions. The other actuators maintain
their positions until all actuators have reached the positions currently required. This
is essential for setting fuel /air ratio control. This means that during the time the ra-
tio curves are programmed, the person making the plant settings must continuously
monitor the quality of the combustion process (e.g. by means of a flue gas ana-
lyzer). Also, if combustion levels are poor, or in the event of dangerous situations,
the commissioning engineer must take appropriate action (e.g. switching off the
system manually)
To ensure the safety and reliability of the LMV5... system, the following points must
also be observed:
-
Condensation and ingress of humidity must be avoided. Should such conditions
occur, make sure that the unit will be completely dry before switching on again!
-
Static charges must be avoided since they can damage the unit’s electronic com-
ponents when touched.
Recommendation:
Use ESD equipment
