10.3.3 Checking the ionisation current
1. Check the ionisation current at full load and at low load.
The value is stable after 1 minute.
2. Clean or replace the ionisation/ignition electrode if the value is lower
than 4 µA.
For more information, see
Replacing the ionisation/ignition electrode, page 65
10.3.4 Checking the flue gas discharge/air supply connections
1. Check the flue gas discharge and air supply connections for condition
and tightness.
10.3.5 Checking the combustion
Combustion is checked by measuring the O
2
/CO
2
percentage in the flue
gas outlet duct.
For more information, see
Checking/setting combustion, page 43
Fig.80
Checking flue gas discharge/air
supply connections
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