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17
AST 14 C 152/00
4.2 GAS CON VERSIONS
CONVERSION FROM NATURAL GAS TO LPG
Check that the boiler is disconnected from power mains;
Remove the main burner;
Remove the main burner nozzles and replace them with those bearing the correct
diameter in relation to the new gas type (see tables in chapter 3.3 “Operational data”) -
ATTENTION: it is mandatory to install the copper seals;
Replace the main burner;
Replace the connection pipe between the gas valve and the manifold of the burner
nozzles;
Access the main electronic board and position the MET-LPG jumper to the LPG
position (see the photo below);
Now proceed with the adjustment of the gas valve (next page).
CONVERSION FROM LPG TO NATURAL GAS
Check that the boiler is disconnected from power mains;
Remove the main burner;
Remove the main burner nozzles and replace them with those bearing the correct
diameter in relation to the new gas type (see tables in chapter 3.3 “Operational data”) -
ATTENTION: it is mandatory to install the copper seals;
Replace the main burner;
Replace the connection pipe between the gas valve and the manifold of the burner
nozzles;
Access the main electronic board and position the MET-LPG jumper to the MET
position (see the photo below);
Now proceed with the adjustment of the gas valve (next page).
Natural gas
Gas outlet pressure
check
LPG
