Operation With Lpg; Air/Gas Ratio Control - Elster ECOMAX 0C Technical Information

Project planning information > Gas connection

6 .4 .2 Operation with LPG

For operation with LPG, it is essential to cool the gas lance via
a central air lance in order to prevent the LPG from cracking in
the gas lance and soot formation during combustion.
The central air volume is approx. 3 to 5% of the combustion
air volume and must also flow while the burner is switched off.
ECOMAX · Edition 02.11

6 .4 .3 Air/gas ratio control

In order to ensure the required air/gas ratio when equipping
the burners with only gas and air valves without a pneumatic
ratio control system, precise control of the gas and air pres-
sures, as well as monitoring of these pressures is necessary
in accordance with the relevant standards (e.g. EN 746-2).
For pneumatic air/gas ratio control, we recommend the vari-
able air/gas ratio control GVRH, which prevents the lambda
value from varying due to changes in the furnace temperature.
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