Riello DB3 SM C03 Installation, Use And Maintenance Instructions page 38

FLANGE DIMENSIONS - DB 3 - 4
Air duct connection
Fig. 5
FLANGE DIMENSIONS - DB 6
Air duct connection
8
Fixing to the boiler
D7549
Fixing to the boiler
D7549
D8325
Fig. 8
CHAPTER
3 5 0
4 5 3
D7884
Fig. 6
3 8 5
4 9 5
Fig. 9
2
Burner description
Gas supply
6 5 , 5
1 4 5
1 8 5
D7885
Fig. 7
Gas supply
1 6 0
D3974
DN 80
Fig. 10