5.11.2 Gas Train; 5.11.3 Gas Train Installation; 5.11.4 Gas Pressure - Riello RS 1300/E BLU Installation, Use And Maintenance Instructions

5.11.2 Gas train

Approved according to standard EN 676 and provided separately
from the burner.

5.11.3 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.
The operator must use the required equipment
during installation.
The gas train is prearranged to be connected to the burner by the
flange 1) (Fig. 22).

5.11.4 Gas pressure

Tab. J indicates the pressure drops of the combustion head and
gas butterfly valve, on the basis of the burner operating output.
The values shown in Tab. J refer to:
– Natural gas G 20 NCV 9.45 kWh/Sm
– Natural gas G 25 NCV 8.13 kWh/Sm
Column 1
Combustion head pressure drop.
Gas pressure measured at test point 1)(Fig. 23), with:
• combustion chamber at 0 mbar;
• burner working at maximum modulating output;
• combustion head set as on page 21.
Column 2
Pressure loss at gas butterfly valve 2)(Fig. 23) with maximum
opening: 90°.
To calculate the approximate output at which the burner oper-
ates:
– subtract the pressure in combustion chamber from the gas
pressure measured at test point 1)(Fig. 23).
– Find, in Tab. J related to the burner concerned, the pressure
value closest to the result of the subtraction.
– Read off the corresponding output on the left.
20126903
Installation
3 3
(8.2 Mcal/Sm )
3 3
(7.0 Mcal/Sm )
22 GB
20128345
1 p (mbar)
kW
G 20 G 25
9500 60 89
10000 63 94
10500 69 103
11100 76 113
11600 84 125
12200 92 137
12700 101 150
13200 109 162
13700 116 173
14300 122 182
9503 23 34
10200 27 40
10900 31 46
11600 35 52
12400 41 61
13100 46 69
13800 51 76
14500 56 83
15200 62 92
15560 66 98
15200 58 86
15700 62 92
16300 67 100
16800 71 106
17400 76 113
17900 81 121
18500 87 130
19000 92 137
19600 98 146
20100 104 155
1
Fig. 22
2 p (mbar)
G 20 G 25
17 25
19 28
21 31
23 34
25 37
27 40
29 43
31 46
33 49
36 54
13 19
14 21
15 22
16 24
17 25
18 27
20 30
22 33
24 36
26 39
11 16
13 19
16 24
19 28
21 31
24 36
27 40
30 45
33 49
36 54
Tab. J