20148180
24
GB
Installation
5.14.2 Gas train
Type-approved in accordance with EN 676 and supplied
separately from the burner.
To select the correct gas train model, refer to the manual "Burner-
gas train combination" supplied with the unit.
5.14.3 Gas train installation
The gas train is prearranged to be connected to the burner by the
flange 1)(Fig. 26).
5.14.4 Gas pressure
Tab. M indicates the pressure drops of the combustion head and
gas butterfly valve depending on the burner operating output.
Tab. M
The values shown in Tab. M 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
)
Column 1
Combustion head pressure drop.
Gas pressure measured at test point 1)(Fig. 27), with:
•
combustion chamber at 0 mbar;
•
burner working at maximum modulating output;
•
combustion head adjusted as in pag. 19.
Column 2
Pressure drop at gas butterfly valve 2)(Fig. 27) with maximum
opening: 90°.
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.
Fig. 26
20062795
kW
1
p (mbar)
2
p (mbar)
G 20
G 25
G 20
G 25
RL
S 1
000
/M
MX
3750
9.2
13.7
1.0
1.4
4000
10.8
16.0
1.1
1.6
4500
13.9
20.7
1.4
2.1
5000
17.0
25.4
1.7
2.5
5500
20.2
30.1
2.1
3.1
6000
23.3
34.8
2.4
3.7
6500
26.4
39.4
2.9
4.3
7000
30.4
45.3
3.3
5.0
7500
34.8
51.9
3.8
5.7
8000
39.2
58.5
4.4
6.5
8500
43.6
65.1
4.9
7.3
9000
49.2
73.3
5.5
8.2
9500
55.0
82.0
6.1
9.2
10000
60.8
90.7
6.8
10.1
10600
67.8
101.1
7.6
11.4
R
L
S 120
0/M MX
5500
23.1
34.5
2.1
3.1
6000
27.9
41.6
2.4
3.7
6500
32.6
48.7
2.9
4.3
7000
37.4
55.7
3.3
5.0
7500
42.1
62.8
3.8
5.7
8000
48.3
72.1
4.4
6.5
8500
54.5
81.3
4.9
7.3
9000
60.7
90.6
5.5
8.2
9500
67.0
99.8
6.1
9.2
10000
74.3
110.8
6.8
10.2
10500
81.9
122.2
7.5
11.2
11000
89.6
133.6
8.2
12.3
11500
97.2
145.0
9.0
13.4
WARNING
Data of head thermal power and gas pressure
refer to operation with gas butterfly valve fully
open (90°).
Summary of Contents for RLS 1000/M MX
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