Riello G5 - FLAME DETACHMENT PREVENTION DURING IGNITION; ELECTRODE SETTING; PUMP PRESSURE ADJUSTMENT; COMBUSTION HEAD AND AIR DAMPER ADJUSTMENT

20013752
8
GB
ELECTRODE SETTING (See fig. 3)
BURNER START-UP CYCLE
ADJUSTMENTS, TO AVOID FLAME - DETACHMENT, AT BURNER - IGNITION
This inconvenience can occur, when the temperature of the light-oil decreases below +8 °C.
1) CORRECT POSITIONING OF THE ELECTRODES
See fig. 3.
2) PUMP - SETTING
The pump is factory set, at a pressure of 12 bar.
When the temperature of the light oil decreases below +8 °C, increase the pressure to 14 bar.
3) COMBUSTION-HEAD SETTING
Regulate the combustion-head one set-point further ahead than indicated in the instructions.
Example: the instructions require to set the combustion-head on set-point 3.
Instead, the setting is made on set-point 4.
4) FAN - AIR DAMPER ADJUSTMENT
Adjust the damper, reducing the excess air until the Bacharach number is not near 1.
(i.e. a combustion with the lowest possible excess-air).
2 – 2.5 mm
4 ± 0.3 mm
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
D5230
A
Attention:
Before removing or assembling the
nozzle, loosen the screw (A) and
move the electrodes ahead.
Fig. 3
Normal Lock-out, due to light-failure
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
~ 12s
D5229
~ 12s
~ 5s