Unigas RG1025, Manual Of Installation, Use And Maintenance

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C.I.B. UNIGAS - M039144CD
32
Replacing the ignition electrode
To replace the ignition electrode, proceed as follows:
1 remove the burner cover
2 disconnect the electrode cable
3 remove the combustion head (see par. “Removing the combustion head”);
4 loosen the screw that fastens the ignition electrode to the burner ignitor;
5 remove the electrode and replace it referring to the measures shown on Fig. 25.
Cleaning and replacing the detection photoresistor
To clean/replace the detection photoresistor, proceed as follows:
1 Disconnect the system from the electrical power supply.
2 Shut off the fuel supply
3 remove the photoresistor from its slot ;
4 if necessary, replace the photocell with a new one;
5 replace the photoresistor into its slot.
Checking the detection current
To measure the detection signal follow the diagram in figure. If the signal is not in the advised range, verify the electrical contacts, the
cleaning of the combustion head, the position of the photoresistor and if necessary replace it.
Fig. 26
Seasonal stop
To stop the burner in the seasonal stop, proceed as follows:
1 turn the burner’s main switch to 0 (Off position)
2 disconnect the power mains
3 close the fuel cock of the supply line
Burner disposal
In case of disposal, follow the instructions according to the laws in force in your country about the “Disposal of materials”.
ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), otherwise the boi-
ler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head.
Control box Minumum detection signal
Siemens LAL 8µA
MC TERMINAL BLOCK
34 35
SCALE
µA DC