5
GENERAL FEATURES
The control system is made of the Siemens LMV central unit that performs all the burner control functions and of the Siemens AZL local
programming unit that interfaces the system with the user.
Fig. 1
Keys
1
Burner
2
AZL2..
3
Air actuator
4
Fuel actuator
5
LMV2..
6
Output modulatore (only for fully-modulating models)
The burner shown is indicative.
The gas coming from the supply line, passes through the valves group provided with filter and governor. This one forces the pressure in
the utilisation limits. In the double-stage , progressive and fully- modulating burners, the electric actuator, that moves proportionally the
air damper and the gas butterfly valve, is controlled by the LMV2 Burner Management System (BMS). This one allows the optimisation
of the gas flue values, as to get an efficient combustion. The combustion head positioning determines the burner’s output. Fuel and
comburent are routed into separated ways as far as the zone of flame generation (combustion chamber). The air (comburent) and fuel
(gas, gas oil, heavy oil) are forced into the combustion chamber. The control panel, placed on the burner’s front side, shows each ope-
rating stage.
PART I: INSTALLATION
3
4
1
2
5
6
