Gas Feeding Line; Gas Pressure - Riello RS 300/E LN Installation, Use And Maintenance Instructions

4.10.2 Gas feeding line

It must be type-approved according to required standards and is
supplied separately from the burner.
8
10
9
Vent
6 3
11 5 4
D3776
Key to lay-out (Fig. 20)
1 Gas input pipe for main burner
2 Manual valve
3 Low gas pressure switch
4 Safety shut-off valve
5 NO vent valve
6 Regulating shut off valve
7 Gas input pipe for pilot
8 Gas adjustment butterfly valve
9 Burner
10 High gas pressure switch
11 Manual valve (for seal control)
12 Pilot regulator
20008423
5 12 2
4 4
Vent
M ai n
1
gas suppl y
2
Fig. 20

4.10.3 Gas pressure

Important
The pressure at the head of the burner from table refers to zero
in the combustion chamber; to obtain true pressure, measured
by a U-type manometer, (Fig. 36) add the counter-pressure of
the boiler.
Note
See the accompanying instructions for the adjustment of the gas
train.
7
GCV
MBtu/hr
5112
5680
7574
9467
11361
13254
14390
6816
7574
9467
11361
12307
13254
15148
17042
9467
11361
13254
15148
17042
18935
19692
23
GB
Combustion Gas butterfly +
Head Adaptor
"WC "WC
3.3 0.63
3.7 0.79
4.9 1.38
5.4 2.13
5.9 3
7.9 4.2
9 5.1
2.3 1.1
3 1.38
4.7 2.13
6.4 3
7.3 3.62
8.3 5.17
10.8 5.47
13 7
4.4 1.81
6 2.64
7.7 3
9.7 3.82
11.8 4.64
14.1 5.55
15 5.9