Riello R40 N20 Montageanleitung Und Bedienungsanleitung Seite 12

GRAVITY SYSTEMS
D5875
SUCTION SYSTEM
The max. depression of 0.5 bar (38 cm Hg) must not be exceeded, which is measured at the vac-
uometer attachment (4, fig. 1).
The pipes must be perfectly sealed. When the cistern is placed at a lower level than the
burner, we recommend bringing the return pipes in at the same height as the suction pipe.
In this case, the foot valve is not required.
D5876
Is necessary to install a filter on the fuel supply line.
2411
FUEL OIL DRIVEN SYSTEMS
(for light oil with a max. viscosity of 5°E at 50°C)
H = Difference of level.
L = Max. length of the suction line.
H = Difference of level
L = Max. length of the suction including the vertical
stretch.
3 GB
L meters
H
ø 3/4"
meters
gas
0 10
0,5 14
1 18
1,5 22
2 26
L v
H
ø 1 1/4" ø 1 1/2"
meters
gas gas
0 22
0,5 19
1 16
1,5 13
2 10
2,5 7
3 0
ø 1"
gas
20
26
32
38
44
45
39
33
27
21
15
8