Riello RS 55/M BLU Instrucciones De Instalación, Uso Y Mantenimiento página 21

Example with natural gas G 20:
Maximum output operation
Gas pressure at test point 1)(Fig. 21)
Pressure in combustion chamber
A maximum output of 500 kW shown in Tab. G corresponds to 8.4
mbar pressure, column 1.
This value serves as a rough guide; the effective output must be
measured at the gas meter.
To know the required gas pressure at test point 1)(Fig. 21), set
the maximum output required from the burner operation, then:
– find the nearest output value in the Tab. G for the burner in
question.
– Read, on the right (column 1) the socket pressure 1)(Fig. 21).
– Add this value to the estimated pressure in the combustion
chamber.
Example with natural gas G 20:
Maximum output required: 500 kW
Gas pressure at output of 500 kW
Pressure in combustion chamber
gas pressure at test point 1)(Fig. 21).
Installation
= 10.4 mbar
= 2.0 mbar
10.4 - 2.0 = 8.4 mbar
= 8.4 mbar
= 2.0 mbar
8.4 + 2.0 = 10.4 mbar
19
S8738
GB
1
2
Fig. 21
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