Electrode Setting; Burner Start-Up Cycle - Riello 40 Instrucciones De Instalación, Montaje Y Funcionamiento

ELECTRODE SETTING

Attention:
Before removing or assembling the
nozzle, loosen the screw (A) and
move the electrodes ahead.

BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
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. 7.
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.
the instructions require to set the combustion-head on set-point 3.
Example:
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).
2346
(See fig. 7)
Fig. 7
~
12s
4 ±
0.3 mm
D5230
A
Lock-out, due to light-failure
~
8
GB
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
2 – 2.5
mm
~
12s 5s
D5229