20141254
20
GB
Start-up, calibration and operation of the burner
6.5
Air damper adjustment
The air damper is adjusted in the factory.
This adjustment is purely indicative. However, each installation
has its own operating conditions: nozzle flow rate, positive or
negative pressure in the combustion chamber, air excess re-
quirement, etc.
All these conditions can require different adjustments of the air
damper.
6.5.1
Main air damper (only for model RDB2.2R
BG1 BLU 21)
To adjust the positions of the air damper, proceed as follows:
remove the secondary damper B) by loosening the screw 1);
loosen the screw 2) and turn the main damper A) to the
required position;
tighten the screw 2) and re-install the secondary damper B).
6.5.2
Two-stage air damper
The purpose of the damper B)(Fig. 15) is to optimise the air in-
take.
Optimisation is possible by using the screw 3)(Fig. 15).
WARNING
The adjustment of the air is carried out using two
independent dampers (Fig. 14).
B
1
2
A
Fig. 14
20093890
B
3
E9172
Fig. 15
