Always perform the following checks after completing any maintenance task:
● Commission the appliance according to the relevant operating manual.
● Check the appliance for gas and water leaks.
● Check the air/flue gas system for leaks, check its fastening
● Check for ignition and an even flame on the burner.
● Check that the heating system is working.
● Fill out the Benchmark gas boiler commissioning checklist at the rear of this guide.
9 Combustion analysis
NOTE:
The boiler is fitted with a flue gas analysis point. A suitable flue gasanalyser can be
con-nected to this point to establish the combus-tion performance of the boiler.
9.1 Check CO2 content
Refer to table 9.1 and if necessary set (air-ratio adjustment).
NOTE:
Combustion analysis must be carried out at annual service if a flue gas analyser is
available, if no analyser is available then visual checks should be carried out as per
service schedule. Checking/adjustment of this value is also required in the following
instances: replacement of gas valve, conversion to or from natural gas/LPG or if
incorrect combustion is suspected!
Fig. 9.1 Test point
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