PART I: SPECIFICATIONS
10
Performance Curves
To get the input in kcal/h, multiply value in kW by 860.
Data are referred to standard conditions: atmospheric pressure at 1013mbar, ambient temperature at 15° C
NOTE:
The performance curve is a diagram that represents the burner performance in the type approval phase or in the laboratory tests, but does not represent the
regulation range of the machine. On this diagram the maximum output point is usually reached by adjsuting the combustion head to its “MAX” position (see paragraph
“Adjusting the combustion head”); the minimum output point is reached setting the combustion head to its “MIN” position. During the first ignition, the combustion head is set
in order to find a compromise between the burner output and the generator specifications, that is why the minimum output may be different from the Performance curve
minimum
PRESSURE IN
COMBUSTION CHAMBER
(mba
r)
H455A M-
kW
H630A M-
kW
PRESSURE IN
COMBUSTION CHAMBER (mb
ar)
H685A M-
kW
The values in the diagrams refer to
natural gas
with a calorific value of 8125 kcal/Stm
3
(15°C, 1013 mbar) and a density of
0.714 kg/Stm
3
.
The values in the diagrams refer to
GPL
with a calorific value of 22300 kcal/Stm
3
(15°C, 1013 mbar) and a density of 2.14 kg/
Stm
3
. When the calorific value and the density change, the pressure values should be adjusted accordingly.
Where:
Natural gas pressure shown in diagram
Real gas pressure
Natural gas flow rate shown in diagram
Real gas flow rate
Natural gas density shown in diagram
Real gas density
