5
OUTPUT SUPPLIED
The charts alongside will allow you to determine
the output supplied either by reading the
number of rotations or by reading the down-
stream pressure of the gas valve (point 1).
Example:
• Operation with PREMIX RX 250 S/PV
• Natural gas G31 PCI 9.45 kWh/Sm
3
;
• Pressure on point 1 = -21 mbar.
The burnt power corresponds to 200 kW.
The burnt power corresponds to 200 kW.
Going back in vertical in the diagram, until inter-
crossing the outlined straight line, you can esti-
mate the value of the number of rotation on the
scale of the left-hand ordinates: in this case
4750 turns/min.
For an exact reading of the number of rotations,
it is available a control box interface kit.
VS
VR
R
2
1
F
D7789
RX180S/ PV G20- G25
RX180S/ PV G30- G31
RX250S/ PV G20- G25
RX250S/ PV G30- G31
(A)
Motor r
p
m
Thermal power - kW
Gas
valve ou
tp
ut p
ressure -
mb
ar
RX 180
S/PV G20 - G25
RX 180
S/PV G30 - G31
RX 250
S/PV G20 - G25
RX 250
S/PV G30 - G31
D7814
(B)
Motor r
p
m
Motor rpm
Motor
rpm
Gas valve
out
pu
t pres
sure - m
b
ar
Gas valve o
u
tp
u
t pressu
re - m
b
ar
Gas valv
e ou
tpu
t p
re
ssure -
mb
ar
Thermal power - kW
Thermal power - kW
Thermal power - kW
rpm
Pressure
