Riello GAS 3, Инструкции по установке, использованию и обслуживанию

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19 20144819 GB
Installation
Column 1
Combustion head pressure drop.
Gas pressure measured at test point 12)(Fig. 4 on page 11), with:
-
combustion chamber at 0 mbar;
- Gas G20 (methane)
To calculate the approximate output at which the burner oper-
ates:
-
subtract the pressure in combustion chamber from the gas
pressure measured at test point 12)(Fig. 4 on page 11).
- Find in Tab. F related to the burner concerned, the pressure
value closest to the result of the subtraction.
- Read the corresponding output on the left.
Example GAS 3 with natural gas G20:
Pressure of the gas at the socket = 10.3 mbar
Pressure in combustion chamber = 2 mbar
10.3 - 2 = 8.3 mbar
A pressure of 5.3 mbar, column 1, corresponds in Tab. F to an
output of 277 kW.
This value serves as a rough guide; the effective output must be
measured at the gas meter.
To find out on the other hand the gas pressure required at the
socket 12)(Fig. 4 on page 11), having fixed the output at which
you want the burner to operate:
-
find the nearest output value in Tab. F for the burner in ques-
tion.
- Read on the right, column 1, the pressure at the test point
12)(Fig. 4 on page 11).
- Add this value to the estimated pressure in combustion
chamber.
Example GAS 3 with natural gas G20:
Desired output: 277 kW
Gas pressure at an output of 277 kW
= 8.3 mbar
Pressure in combustion chamber = 2 mbar
8.3 + 2 = 10.3 mbar
pressure required at test point 12)(Fig. 4 on page 11).
Fig. 18
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