11
GB
PRESSURE/FLOW RATE CURVES G 700
They indicate the gas pressure in mbar, (in the various points of the gas ramp) necessary to obtain a determined
flow rate in m3/h. The pressures are measured with the burner functioning and are intended with combustion
chamber at 0 mbar. If the chamber is pressurised, the gas pressure necessary will be that of the diagram plus the
value of that of the chamber.
M
0
5
10
15
20
30
40
50
60
150
100
200
300
400
500
600
700
kW
mbar
800
2
1
2
1
1
2
With reducer d. 18mm
Without reducer
NA
TURAL
GAS
0
5
10
15
20
30
150
100
200
300
400
500
600
700
kW
mbar
800
1
1
2
2
With reducer d. 14mm
Without reducer
LPG
VCV 240 (inlet pressure)
VCV 125 (inlet pressure) (natural gas, max 590 kW)
Pv (pressure downstream of the ramp)
Pe = Pressure upstream from the valves unit
Pt = Pressure at the combustion head
Pv = Pressure downstream of the ramp
PG = Minimum gas pressure pressure switch
ATTENTION: the Pt-Pv gas pressure outlets have a screw closing pin. Ensure that the Pt - Pv gas outlets
are closed during normal operation.
NOTE: For reducer positioning (gas diaphragm) see GAS DIAPHRAGM POSITIONING” paragraph.
PG
Pt
Pe
Pv
