13
GB
0
5
10
15
20
25
30
35
40
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
mbar
kW
1
4
55
3
2
1
2
3
4
PG
Pt
Pe
Pv
CT
VCV 350 (inlet pressure)
VGD 20.403 (inlet pressure)
VGD 20.503 (inlet pressure)
VGD 40.065 (inlet pressure)
Pv (pressure downstream of the ramp)
0
5
10
15
20
25
30
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
mbar
kW
VGD 40.065 (inlet pressure)
Pv (pressure downstream of the ramp)
NA
TURAL
GAS
LPG
PRESSURE/FLOW RATE CURVES G 2000
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
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.
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
CT = leak-tightness pressure switch
With reducer d. 30 mm