62
GB
TECHNICAL DATA
WORK CURVE
The work range was obtained at an ambient temperature of 15*0, at an atmospheric pressure of 1 013.5 mbar (at
0 metres above sea-level) and with the adjustments recommended in this instruction.
M
U
M
U
Model
G 300
G 450
Type
Two-stage progressive or modulating
Functioning
Intermittent
Regulation
Air/gas proportional valve
Maximum heat output (natural gas)
kW
330
470
Minimum heat output (natural gas)
kW
106
136,9
Maximum heat output (lpg)
kW
364
496,5
Minimum heat output (lpg)
kW
122
151,2
NO
x
class
-
2
Gas category
-
II2R3R (20,50
mbar)
Maximum gas flow rate I2R (15°C - 1013.5 mbar)
m
3
/h
33,9
48,7
Minimum gas flow rate I2R (15°C - 1013.5 mbar)
m
3
/h
12,2
14,8
Electric protection rating
IP
20
Motor electric power supply (single phase)
V / Hz
230 / 50 - 60
*
Auxiliary electric power supply (single phase)
V / Hz
230 / 50
Motor nominal electric power
W
370
Max. absorbed power
W
715
Transformer (voltage/secondary current)
kV / mA
15 / 48
Functioning temperature (min/max)
°C
0 / 40
Noise level **
dB(A)
78
Weight of the burner body (without ramp)
kg
18
* It is possible the 60 Hz power supply only with suitable electric motor.
** Sound pressure measured in the manufacturer’s combustion laboratory, with burner operating on a test boiler and at
maximum output.
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
mbar
0
100 120 140 160 180 200 220 240 260
280
300 320 340 360
380 400 420 440 460 480
kW
500
G 300
G 450
LPG work curve
