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5.10.1 Gas train
Approved according to standard EN 676 and provided separately
from the burner.
5.10.2 Gas train installation
Disconnect the electrical power using the main
switch.
DANGER
Check that there are no gas leaks.
Pay attention when handling the train: danger of
crushing of limbs.
Make sure that the gas train is properly installed
by checking for any fuel leaks.
Refer to the accompanying instructions for the ad-
justment of the gas train.
ATTENTION
The operator must use the required equipment
during installation.
The gas train can enter the burner from the right or left side, de-
pending on which is the most convenient.
The gas train must be connected to the gas attachment 1)
with the flange 2), the gasket 3) and the screws 4) supplied
with the burner (Fig. 28).
The gas solenoids must be as close as possible to the
burner, to ensure that the gas reaches the combustion head
within the Safety time of 3s.
Ensure that the maximum pressure necessary for the burner
is included in the calibration field of the pressure regulator
(colour of the spring).
D722
20152087
Installation
5.10.3 Gas pressure
allows to identify the power delivered by the burner based on the
pressure measured at the test point 4)(Fig. 29).
kW
755
910
1050
1100
1200
1350
1450
1500
1650
1830
1960
2050
2100
2160
Without Filter
With Filter
kW
1060
1100
1170
1400
1700
2000
2380
2600
2765
2900
3060
3200
3500
3570
Without Filter
With Filter
The values shown in refer to:
–
Natural gas G 20 NCV 9.45 kWh/Sm
Column 1
Gas pressure measured at the test point 4)(Fig. 29), with:
•
Combustion chamber at 0 mbar;
•
Burner working at maximum output.
Calculate the approximate maximum output of the burner in this
way:
–
subtract the combustion chamber pressure from the gas
pressure measured at test point 4)(Fig. 29).
–
Find, in related to the burner concerned, the pressure value
closest to the result of the subtraction.
–
Read the corresponding output on the left.
Fig. 28
28
GB
RX 1800 S/E
1 p (mbar)
1.1
1.6
2.1
2.6
2.7
3.5
4.0
4.3
5.2
6.4
7.3
8.0
8.4
8.9
RX 1800 S/E
RX 2500 S/E
1 p (mbar)
1 p (mbar)
1.0
1.1
1.2
1.8
2.6
3.6
5.1
6.1
6.9
==
==
==
==
==
3
(8.2 Mcal/Sm
RX 3000 S/E
1 p (mbar)
==
==
1.2
1.7
2.5
3.4
4.8
5.8
6.5
7.2
8.0
8.8
10.5
10.9
Tab. M
3
)
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