Riello RS 1000/M BLU, Manual

Page: 23 / 56

21 20145860 GB
Installation
Example RS 1000/M BLU with natural gas G20:
Maximum modulating output operation
Gas pressure at test point 1) (Fig. 22
) = 41.9 mbar
Pressure in combustion chamber = 5 mbar
41.9 - 5 = 36.9 mbar
A pressure of 36.9 mbar, column 1, corresponds in the table Tab. J
to an output of 8000 kW.
This value serves as a rough guide; the effective output must be
measured at the gas meter.
To calculate the required gas pressure at test point 1) (Fig. 22),
set the maximum modulating output required from the burner op-
eration:
– find the nearest output value in the table Tab. J for the burner
in question.
– Read, on the right (column 1), the pressure at the test point 1)
(Fig. 22).
– Add this value to the estimated pressure in the combustion
chamber.
Example RS 1000/M BLU with natural gas G20:
Maximum modulating output operation
Gas pressure at an output of 8000 kW
= 36.9 mbar
Pressure in combustion chamber = 5 mbar
36.9 + 5 = 41.9 mbar
Pressure required at test point 1)(Fig. 22).
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Fig. 22