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Technical description of the burner
4.10 Output supplied
The diagrams allow you to set the power output either using the
number of fan revs or using the pressure downstream of the gas
valve (Fig. 5).
Example (Fig. 6):
– gas G20 PCI 9.45 kWh/Sm
3
– gas pressure = - 4 mbar (2
nd
chart)
– burnt output corresponds to 300 kW
Going vertically up the 1
st
diagram, to intersect the dotted line,
you can estimate the value of the number of revs on the left hand
y-axis: in this case 3500 rpm.
For an exact reading of the number of revs there is a kit for inter-
facing with the control box.
Valve pre-calibration
Tab. G
* Tighten screw 1)(Fig. 5) fully home towards “-” mark, then
open it towards “+” mark, following the indications provided
in Tab. G.
Key (Fig. 5)
1 Maximum gas flow adjustment (V1)
2 Pressure point downstream
3 Minimum gas flow adjustment (V2)
Fuel V1 - gas max* V2 - gas min
G20 4.5 revs Middle position
G25 10.0 revs Middle position
LPG 2.5 revs Middle position
Fig. 6
DOC-0078541
G25
G20
GPL
Pressure outlet
gas valve - mbar
No. of motor turns/min.
Thermal power – kW
Thermal power – kW
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