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4.6.3
Length of the blast tube
The length of the blast tube must be selected according to the indi-
cations provided by the manufacturer of the boiler, and in any case
it must be greater than the thickness of the boiler door complete
with its refractory.
The available lengths L are those indicated in the Tab. I.
Model
RL 190/E
4.7
Securing the burner to the boiler
Disassemble the blast tube 9) from the burner 6) by proceeding as
follows (Fig. 14):
loosen the four screws 3) and remove the cover 1).
Remove the screws 2) from the two slide bars 5).
Remove the two screws 4) fixing the burner 6) to the flange 7).
Withdraw the blast tube 9) complete with flange 7) and slide
bars 5).
Secure flange 7) to the boiler plate inserting the supplied gas-
ket 8).
3
4.8
Electrode adjustment
Make sure that the electrodes are positioned as
shown in Fig. 15.
WARNING
Installation
Short blast tube
14 9/16"
Tab. I
1
3
20111941
17
GB
For boilers with front flue passes 12)(Fig. 14) or flame inversion
chambers, protective insulation material 10) must be inserted be-
tween the boiler refractory 11) and the blast tube 9).
This protective insulation must not compromise the extraction of
the blast tube (Fig. 14).
For boilers having a water-cooled front the insulation 10)-
11)(Fig. 14) is not required unless it is required by the boiler man-
ufacturer.
Use the 4 screws provided after having protected the thread
with an anti-seizing product.
The burner-boiler seal must be airtight.
WARNING
5
2
4
6
7
8
D2528
12
11
10
9
L
12
Fig. 14
Fig. 15
20109674
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