Air Damper And 1St Stage And 2Nd Stage Pressure Pump Adjustment; 1St Stage Adjustment; 2Nd Stage Adjustment; Flame Sensor Adjustment - Riello BG7.1D Installation, Use And Maintenance Instructions

5.9

Air damper and 1st stage and 2nd stage pressure pump adjustment

5.9.1

1st stage adjustment

Air damper adjustment
 Loosen the nut 1)(Fig. 13), turn the screw 2)(Fig. 13), and
bring the indicator 3)(Fig. 13) to the required position.
 When the adjustment is completed screw in the nut
1)(Fig. 13).
Pump pressure adjustment
 The pump leaves the factory set at 9 bar.
If necessary, recalibrate the pressure using the screw 7)(Fig. 13).
The pressure gauge for checking the pressure should be fitted in
the place of the plug 8)(Fig. 13).
5.9.2

2nd stage adjustment

Air damper adjustment
 Loosen the nut 4)(Fig. 13), adjust the screw 5)(Fig. 13), and
bring the indicator 6)(Fig. 13) to the required position.
 When the adjustment is completed screw in the nut
4)(Fig. 13).
 For the burners BG6.1D and BG6.1D TL when the burner
stops, the air damper closes automatically to a max. depres-
sion at the flue of 0.5 mbar.
 For the BG7.1D when the burner stops, the air damper
remains open at the position of the 1st stage.
Pump pressure adjustment
 The pump leaves the factory set at 15 bar.
If necessary, recalibrate the pressure using the screw 9)(Fig. 13).
The pressure gauge for checking the pressure should be fitted in
the place of the plug 8)(Fig. 13).

5.10 Flame sensor adjustment

The flame sensor leaves the factory calibrated to position 4.
It consists of:
 a potentiometer 3)(Fig. 14) for adjusting the sensitivity.
 Led 1)(Fig. 14) indicates the sensitivity.
 Led 2)(Fig. 14) indicates its operation.
 During pre-purging the LEDs (1 and 2) stay
off.
 Permanent operation is indicated when both
LEDs are lit up.
WARNING
To adjust, proceed as follows:
 turn the indicator of the potentiometer 3)(Fig. 14) anticlock-
wise until the LED 1)(Fig. 14) blinks, thereby defining the
minimum value of the notch.
 Turn the indicator of the potentiometer 3)(Fig. 14) clockwise
until the LED 1)(Fig. 14)is on and fixed.
Consider the setting final as the minimum value detected by
increasing by one or two notches.
 After a pause of at least five minutes, check that this adjust-
ment permits the proper start up of the burner.
Installation
7
9
8
Black
17 GB
2
3
S7915
1
Brown
5
6
4
1
Fig. 13
3
2
Blue
S7903
Fig. 14
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