Riello RLS 300/E MX, Installation, Use And Maintenance Instructions

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20009654
28 GB
Installation
Column 2
Pressure loss at gas butterfly valve 2) (Fig. 30) with maximum
opening: 90°.
Calculate the approximate maximum output of the burner in this
way:
–
subtract the combustion chamber pressure from the gas
pressure measured at test point 1) (Fig. 30).
– Find, in the table relating to the burner concerned, the pres-
sure value closest to the result of the subtraction.
– Read off the corresponding output on the left.
Example with natural gas G 20 - RLS 500/E MX:
Maximum output operation
Gas pressure at test point 1) (Fig. 30)
= 31 mbar
Pressure in combustion chamber = 2 mbar
31 - 2 = 29 mbar
A pressure of 29 mbar, column 1, corresponds in the table A to
an output of 4500 kW.
This value serves as a rough guide, the effective delivery must be
measured at the gas meter.
To calculate the required gas pressure at test point 1) (Fig. 30),
set the maximum output required from the burner operation:
–
find the nearest output value in the table for the burner in
question.
– Read off the pressure at test point 1) (Fig. 30) on the right in
column 1.
– Add this value to the estimated pressure in the combustion
chamber.
Example with natural gas G 20 - RLS 500/E MX:
Required burner maximum output operation: 4500 kW
Pressure of the gas at an output of 4500 kW = 29 mbar
Pressure in combustion chamber
= 2 mbar
29 + 2 = 31 mbar
pressure required at test point 1) (Fig. 30).
1
2
Fig. 30
S8883