Measuring The Ionisation Current; Checking The Air And Gas Pressure On The Combustion Head - Riello RS 34/E MZ Installation, Use And Maintenance Instructions

7.2.3

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 44,
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. 38.
Carefully check the polarities!
WARNING
7.2.4 Checking the air and gas pressure on the
combustion head
To carry out this operation a pressure gauge must be used to
mesure the air and gas pressure at the combustion head, as
shown in Fig. 39.
Maintenance
Checking
gas pressure
D8005
51 GB
D8006
Checking
air pressure
Fig. 38
Fig. 39
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