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6.3
Positioning the electrodes
The measurements shown in Fig. 21 must be re-
spected.
WARNING
B
± 0 . 3
6.4
Combustion head adjustment
The combustion head is adjusted in the factory.
Make sure these adjustments comply with the values indicated in
Tab. K on page 24.
Adjustments on the basis of the required output can be made by
rotating the adjustment knob 15)(Fig. 2 on page 9).
~
1 complete rotation =
1 millimetre.
D
Start-up, calibration and operation of the burner
20142969
Model
RDB 2.2 BX 12 - 18 DGT
RDB 2.2 BX 18 - 25 DGT
RDB 2.2 BX 25 - 32 DGT
20142971
Model
FULLY CLOSED
RDB 2.2 BX 12 - 18 DGT
RDB 2.2 BX 18 - 25 DGT
RDB 2.2 BX 25 - 32 DGT
25
GB
A
B
4
3
2 - 2.5
C
X (mm)
TURNS
0
-
2
~ 2.2 cw
5
~ 5.5 cw
10
~ 11 cw
X=0
X
1 m m
Fig. 22
20148481
C
Tab. L
Fig. 21
D
9
11
14
19
Tab. M
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