Combustion Head Adjustment; Air Damper Adjustment; Positioning The Electrodes - Riello RDB 3.2 BX 32/50 Installation, Use And Maintenance Instructions

6.5

Combustion head adjustment

The combustion head is adjusted in the factory.
Make sure these adjustments comply with the values indicated in
Tab. E on page 17.
Adjustments on the basis of the necessary output (Fig. 14) can
be made by rotating the adjustment screw 9)(Fig. 1).
• Distance between the 2 notches = 3 millimetres;
• 1 complete rotation = 1 millimetre.
6.6

Air damper adjustment

The air damper is factory set according to the values indicated in
Tab. E.The adjustments are for guidance only. Each installation
however, has its own unpredictable working conditions: actual
nozzle output; positive or negative pressure in the combustion-
chamber, the need of excess air, etc.
All these conditions may require a different air-damper setting.
The damper 1)(Fig. 15) is used to precisely adjust the input air
flow rate.
 To modify the calibration, adjust the screw 2) as shown in
Fig. 15.
6.7

Positioning the electrodes

A
4.6
B
± 0 . 3
20148053
Start-up, calibration and operation of the burner
B C
3 2 - 2.5
20142971
•
D9873
The measurements shown in Fig. 16 must be re-
spected.
Tab. G
WARNING
20
GB
0
2
20087009
C
3
2
1
0
Fig. 14
1
Fig. 15
Fig. 16