Riello DB 3 LSM C13 Installation, Use And Maintenance Instructions page 37

2.4 Overall dimensions
1 0 0 8
FLANGE DIMENSIONS
Air duct connection
D7549
6
5 1 4
3 7 2
1 5 6
Gas supply
D7884
Fig. 4
2
CHAPTER
3 5 0
4 5 3
Fig. 5
Burner description
5 3 4 3 5 9
20110629
Fig. 3
Fixing to the boiler
6 5 , 5
1 4 5
1 8 5
D7885
Fig. 6