20168415
22
GB
Installation
5.9.2
Gas train
Type-approved in accordance with EN 676 and supplied
separately from the burner.
5.9.3
Gas train installation
The train can enter the burner from the right or left side,
depending on which is the most convenient, see Fig. 22.
The gas train must be connected to the gas connection 1)
(Fig. 22), using the flange 2), seal 3) and screws 4) supplied with
the burner.
See the accompanying instructions for the adjustment of the gas
train.
The values shown in refer to:
–
Natural gas G 20 NCV 9.45 kWh/Sm
3
(8.2 Mcal/Sm
3
)
–
Natural gas G 25 NCV 8.13 kWh/Sm
3
(7.0 Mcal/Sm
3
)
5.9.4
Gas pressure
indicates the pressure drops of the combustion head and gas
butterfly valve depending on the burner operating output.
Tab. H
DANGER
Disconnect the power supply using the system
main switch.
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.
The operator must use the required equipment
during installation.
ATTENTION
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.
Make sure that the maximum pressure necessary
for the burner is within the calibration range of the
pressure regulator.
ATTENTION
Data of head thermal power and gas
pressure refer to operation with gas
butterfly valve fully open (90°).
kW
1
p (mbar)
2
p (mbar)
G 20
G 20
RS 25/M
BLU
125
1.8
0.1
140
2.6
0.1
160
3.8
0.1
180
4.9
0.2
200
6.0
0.2
220
7.2
0.2
240
8.3
0.3
260
9.4
0.3
280
10.5
0.4
300
11.7
0.5
320
12.8
0.5
340
13.9
0.6
360
15.0
0.7
370
15.6
0.7
RS 3
5/M
BLU
200
2.8
0.2
220
3.6
0.2
240
4.4
0.3
260
5.2
0.3
280
6.0
0.4
300
6.8
0.4
320
7.6
0.5
340
8.5
0.6
360
9.3
0.6
380
10.1
0.7
400
10.9
0.8
420
11.7
0.8
440
12.5
0.9
460
13.3
1.0
480
14.1
1.1
Fig. 22
D3839
