Riello MB 405/2 Manuel D'entretien page 48

5.5 Pressure loss
The gas train pressure loss p is provided from the diagram (Fig.
6); the scales of the volumetric output
for:
air,
a
natural gas (G20),
n
propane (G30),
p
town gas (G140), only for applications not covered by the
c
Gas Appliances Directive (2009/142/EC).
The values, provided from the diagram, can be different accord-
ing to the pressure regulator calibration.
The minimum necessary pressure in the network can be obtained
by adding the pressure of the diagram to the burner pressure
D4368
20049136
Activation, calibration and functioning
V °
are valid respectively
10
losses (see burner manual) and the back pressure of the com-
bustion chamber (see heat generator manual).
Gas train
3970539
3970084 - 3970540
3970537 - 3970538 - 3970541
3970542 - 3970556
3970534 - 3970557
3970543
3970582
A B C
GB
D E F G
A
B
C
D
E
F
G
Tab. F
Fig. 6