Riello RS 160/M BLU, Instruction Manual, Page: 25 / 52

23 20168488 GB
Installation
To calculate the approximate output at which the burner
operates:
–
subtract the combustion chamber pressure from the gas
pressure measured at test point 1)(Fig. 23).
– Find in Tab. K related to the burner concerned, the pressure
value closest to the result of the subtraction.
– Read the corresponding output on the left.
Example with natural gas G 20 for:
Maximum output operation
Gas pressure at test point 1)(Fig. 23)
= 16.0 mbar
Pressure in combustion chamber = 3.0 mbar
16.0 - 3.0 = 13.0 mbar
A pressure of 13.0 mbar, column 1, corresponds in the table Tab.
K to an output of 1600 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. 23),
set the maximum modulating output required from the burner
operation:
–
find the nearest output value in Tab. K on page 22 for the
burner in question.
– Read, on the right (column 1), the pressure at the test point
1)(Fig. 23).
– Add this value to the estimated pressure in combustion
chamber.
Example with natural gas G 20 for:
Operating at the desired maximum output: 1600 kW
Gas pressure at an output of 1600 kW
= 13.0 mbar
Pressure in combustion chamber = 3.0 mbar
13.0 + 3.0 = 16.0 mbar
pressure required at test point 1)(Fig. 23).
ATTENTION
Data of head thermal power and gas pressure
refer to operation with gas butterfly valve fully
open (90°).
Fig. 23
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