Adjusting The Air Damper; Adjusting The Flame Detector - Riello BG6.1D Instrucciones De Instalación, Montaje Y Funcionamiento

8.6

Adjusting the air damper

To regulate the air damper, do the following:
1st stage adjustment
 Loosen the nut 1), adjust the screw 2), and bring the indica-
tor 3) to the required position.
 Tighten the nut 1).
2nd stage adjustment
 Loosen the nut 4), adjust the screw 5), and bring the indica-
tor 6) to the required position.
 Tighten the nut 4).
 For type 985T
When the burner stops, the air damper closes automatically
to a max. depression at the flue of 0.5 mbar.
For type 986T
When the burner stops, the air damper remains open at the
opening position of the 1st stage.
4
3
S7994
20015403
Operation
8.7

Adjusting the flame detector

The flame detector leaves the factory calibrated in position 4
Fig. 21.
It consists of:
– a potentiometer 3) for adjusting sensitivity
– a LED 1) indicating sensitivity
– a LED 2) indicating operation
During pre-purging, LEDs 1) and 2) are unlit.
Permanent operation is indicated when both LEDs
are lit up.
WARNING
To adjust, proceed as follows:
 Adjust the indicator of the potentiometer 3) by turning anti-
clockwise until LED 1) blinks, thereby defining the minimum
value of the notch.
 Adjust the indicator of the potentiometer 3) by turning clock-
wise until LED 1) has a permanent light. Consider the set-
5
ting 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.
6
2
1
Black
Brown
Fig. 20
20
GB
1
3
2
S7997
Blue
Fig. 21