30
UK
TECHNICAL FEATURES
M
PRESSURE CURVES
PRESSURE CURVES/GAS DELIVERY
M
PRESSURE CURVES: The pressure curves indicate the output in kW according to the
backpressure in the combustion chamber, in mbars.
PRESSURE CURVES/GAS DELIVERY: These curves show the gas pressure, in milli-
bars, (at points Pi and Pt along the gas train) necessary to produce a given
delivery in m 3/h. The pressures have been measured with the burner working and with
a pressure of 0 mbar in the combustion
chamber. If the chamber is pressurized, the gas pressure necessary will be that given
in the diagram plus that in the combustion chamber.
Legend
1 Interception cock - airtight at 1 bar and pressu-
re loss
0,5 mbar.
2 Vibration-damping joint
3 Gas pressure point for pressure reading
4 Gas filter
5 Gas pressure regulator
6 Minimum gas pressure control device (pressu-
re switch)
7 Class A solenoid safety valve. Closure time Tc
≤ 1”.
8 Class A solenoid safety valve. Closure time Tc ≤ 1”.
Ignition power between 10% and 40% of rated ther-
mal
power.
9 Gas delivery regulator, normally incorporated in ei-
ther solenoid valve 7 or 8.
10 Combustion head.
11 Minimum air pressure control device (pressure
switch)
BASIC GAS TRAIN
DESCRiZiOnE
Em 3 ST-E
Em 6 n ST-E
Methane delivery
min
1,61
2,71
m
3
/h
max
3,52
6,24
m
3
/h
B/P delivery
min
0,57
0,96
m
3
/h
max
1,25
2,22
m
3
/h
Thermal output
min
16,0
27,0
kW
max
35,0
62,0
kW
Motor
100
W
Trasformer
8/20 - 12/48
kV/mA
Total absorbed power
280
300
W
Methane pres sure
20
mbar
B/P pressure
30
mbar
Weight
11,5
12,6
kg
Power supply
230V-50/60Hz (*) single phase
Category
II 2H 3+
(*) 60Hz operation only with electronic transformer.
