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4.7
Preparing the boiler
4.7.1
Boring the boiler plate
Pierce the closing plate of the combustion chamber, as in Fig. 14.
The position of the threaded holes can be marked using the
thermal insulation screen supplied with the burner.
4.7.2
Blast tube length
The length of the blast tube must be selected according to the
indications 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 fettling.
For boilers with front flue passes (Fig. 15), or with a flame
inversion chamber, use a protection made out of refractory
material that allows the blast tube to be removed.
For boilers with a water-cooled front a refractory lining is not
necessary unless expressly required by the boiler manufacturer.
4.8
Boiler fixing
Fig. 15 shows how to apply the burner to a boiler with a
headpiece that is not cooled.
However, the refractory wall must not extend beyond the end of
the combustion head of the burner.
mm
DB 12 LSE FGR
20175332
20174375
Min.
Max.
400
500
Installation
The seal between burner and boiler must be
airtight.
ATTENTION
Tab. H
16
GB
4 3 0
420 DB 9
470 DB 12
D3973
REFRACTORY
M A X . 5 0 0
Fig. 14
Fig. 15
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