Installation
17
20052068
GB
4.4
Operating position
4.5
Preparing the boiler
4.5.1
Boring the boiler plate
Make holes in the plate shutting off the combustion chamber, as il-
lustrated in Fig. 10.
The position of the threaded holes can be marked using the ther-
mal insulation screen supplied with the burner.
➤
For boilers with front flue passes 13)(Fig. 11) or flame inver-
sion chambers, a protection in refractory material 11) must be
inserted between the boiler refractory 12) and the blast tube
10). This protection must not compromise the extraction of the
blast tube.
➤
For boilers with a water-cooled frontal, a refractory lining is not
necessary 11)-12)(Fig. 11) unless expressly requested by the
boiler manufacturer.
Tab. D
WARNING
➤
The burner is designed to operate only in posi-
tions 1, 2, 3 and 4 (Fig. 9).
➤
Installation 1 is preferable, as it is the only one
that allows the maintenance operations as
described in this manual.
➤
Installations 2, 3 and 4 permit operation but
make maintenance and inspection of the com-
bustion head more difficult.
DANGER
➤
Any other position could compromise the cor-
rect operation of the appliance.
➤
Installation 5 is prohibited for safety reasons.
2
3
4
5
1
D7739
Fig. 9
inch
A
B
C
RS 190/E
9
1
/
16
12
25
/
32
- 14
1
/
2
5
/
8
W
Fig. 10
D455
