REGULATION INSTRUCTIONS
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5.4 Converting the boiler to a different gas type
All maintenance operations must be carried out by professionally qualified and Gas Safe Registered
personnel and the BENCHMARK Annual Service Record completed.
Check that the gas supply pipe is suitable for the new fuel type.
Conversion is performed as follows:
•
Select the new gas type by changing parameter no.P02 (see ‘Parameters table’ 5.2);
•
Unscrew the aluminium plug and insert the analyser in the exhaust sampling point PF (see fig.1 paragraph
4.4) to check the CO value. Make sure that the value complies with that reported in table 1 (paragraph 4.4);
•
If the CO2 value does not correspond to the specified value, adjust screw V (see fig. 1 paragraph 4.4) on the
venturi clockwise to reduce the CO2 value or anticlockwise to increase it;
