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2902768
9
GB
3.6
PROBE-ELECTRODE POSITIONING
4.
OPERATION
4.1
COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment and test-
ing must be carried out observing the instruction manual of the boiler, including verification of the CO and CO
2
concentration in the flue gases, their temperatures and the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper setting of the combustion head, and the main air
damper opening in accordance with the following table.
4.2
COMBUSTION HEAD SETTING
(see fig. 5)
The combustion head setting must be carried out by the
installer, and set as indicated in the table above.
To set the position of the head, proceed as follows: remove
screw (2) and release screws (1) position the combustion
head / gas valve assembly
(C)
to either set point 1 or 2.
Tighten screws (1) and refit screw (2).
The combustion head leaves the factory pre-set to
position (2).
4.3 AIR DAMPERS SETTING
(see fig. 6, page 10)
The air setting is performed by mean of two independent
dampers.
O
MAIN AIR DAMPER (A)
The main air damper can be set in either of two posi-
tions.
To set the positions of the damper, proceed as follows:
release the secondary air damper (B) loosing the screws
(1).
Loosen the screw (2) and rotate the main air damper (A) to the required position 1or 2. Re-tighten the screw
(2) and put back the secondary air damper (B).
The main air damper is factory pre-set to position 2.
Burner
thermal power
Combustion
head setting
Main air
damper setting
Position
Position
16 – 26 kW
1
1
26 – 47 kW
2
2
WARNING 2.5 – 3.5 mm
Ignition electrode
Diffuser
probe
Probe
Electrode
D4202
1.7
Ionization
Make sure that the ceramic
is behind the diffuser disc
and level with it.
Fig. 5
Po
s. 1
Po
s. 2
1
2
C
E9174
E9175
Содержание 3768000
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