Riello DB 4 SM CO1 A0 FS1 T150 Installation, Use And Maintenance Instructions page 28

2.4 Overall dimensions
A B
DB 4 1550 1024
DB 6 1518 1024
Air duct connection
Fig. 4
6
C D E
728 ø 312 526 670
744 ø 363 495 670
FLANGE DIMENSIONS DB4 SM
Fixing to the boiler
D7549
Fig. 5
2
CHAPTER
F G H I
500 450 260
449 450 260
3 5 0
4 5 3
D7884
Burner description
20076244
L M N
453 275 158
469 275 173
Gas supply
6 5 , 5
1 4 5
1 8 5
Fig. 6
Fig. 3
DN
65
80
D7885