Measuring The Ionisation Current; Checking The Air And Gas Pressure On The Combustion Head - Riello 826 T2 Installation, Use And Maintenance Instructions

6.2.5

Measuring the ionisation current

The burner is fitted with an ionisation system to check that a
flame is present.
The minimum current for control box operation is 4 µA. The Op-
erator Panel visualises "30%" (see "Parameter list" at page 43,
parameter no. 954).
The burner provides a much higher current, so controls are not
normally required.
However, if it is necessary to measure the ionisation current, dis-
connect the plug-socket on the ionisation probe cable and insert
a direct current microammeter with a base scale of 100 µA - see
Fig. 37.
Carefully check the polarities!
WARNING
6.2.6 Checking the air and gas pressure on the
combustion head
To carry out this operation a pressure gauge must be used to
measure the air and gas pressure at the combustion head, as
shown in Fig. 38.
Maintenance
D8750
Checking
gas pressure
+ _
D8751
51 GB
+
_
Checking
air pressure
Fig. 37
Fig. 38
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