System Structure / Function Description; For Europe - Siemens LMV27.100x2 Basic Documentation

20/219
Building Technologies
2

System structure / function description

The LMV27 is a microprocessor-based burner management system with matching
system components for the control and supervision of forced draft burners of medium to
high capacity.
In the LMV27 are integrated:

Burner management system complete with valve proving system

Electronic air-fuel ratio control system for a maximum of 2 SQM3 or SQN1
actuators

Modbus interface
Figure 4: System structure
Example: Modulating gas burner
The system components (AZL2, actuators) are connected directly to the LMV27. All
safety-related digital inputs and outputs of the LMV27 are monitored by a contact
feedback network.
The diagram shows the full scope of functions of the LMV27. The actual functions are to
be determined based on the respective execution / configuration!

2.1 For Europe

For intermittent operation in connection with the LMV27, the ionization probe or the
QRA, QRB or QRC optical flame detectors can be used.
Basic Documentation LMV27...
2 System structure / function description
CC1P7541en
17.12.2018