2318
8
GB
NOTE (RAL-UZ 9 GERMANY)
It is recommended to install:
– an hour run meter to establish the burner firing hours relative to the system load.
– a flue gas thermometer to provide information on firing condition and deposits on heat exchanger surfaces.
➤
For correct burner operation it is essential that the chimney is sized correctly and in compliance with DIN
4705 taking into account DIN 18160.
➤
The burner should be correctly matched to be boiler output taking into consideration the combustion
chamber size and its resistance, to ensure it is within the working range of the burner.
4.2 ELECTRODES ADJUSTMENT
4.3 FLAME DETECTOR ADJUSTMENT
(See fig. 16)
The sensitivity of the flame detector can be adjusted with a
potentiometer (3). It is factory-set t in position 4.
Led (1) indicates the sensitivity.
Led (2) indicates the operation.
■
During pre-ventilation both leds are switched off.
■
Optimal sensitivity during stable operation is shown when
both leds are switched on.
➤
If led (1) pulsates, turn the potentiometer until it switches
on in a steady manner. Then, first turn the pointer
counterclockwise until the led pulsates.
Next, increase the sensitivity by turning the pointer
clockwise one or two notches.
➤
Wait at least 5 minutes, then make sure that the
adjustment done as above allows a correct starting
program of the burner.
4
Lean insulators (1) to disc (2),
(see fig. 15).
ATTENTION
To have access to the electrodes
carry out operation as described in
chapter 4.1 (page 6) “NOZZLES
TO BE USED”.
ATTENTION
Measures must be respected and
also the upwards position.
D5756
5
+ 0.5 mm
0
3
1
2
Fig. 15
6
mm
3
2
1
Fig. 16
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