Riello DB 12 LSE C13 A0 FS1 FR Installation, Use And Maintenance Instructions page 32

3
Installation
3.1 Fixing to the boiler
Fettling
S8525
A
Fig. 12
3.2 Lifting points
To move the burner, the attachment points indicated in Fig. 13 should be used.
20051926
10
The figure alongside shows how to fix the burner to a boiler without a cooled
frontal.
In any case, the fettled wall should not extend beyond the end of the burner
combustion head.
mm
A 464
Fig. 13