Riello 20032946 - Gas Supply; 5.15.1 Gas Line

21
20033283
GB
Installation
5.15 Gas supply
5.15.1 Gas line
The gas train must be connected to the gas attachment
1)(Fig. 23), using flange 2), gasket 3) and screws 4) supplied with
the burner.
The gas train can enter the burner from the right or left side, de-
pending on which is the most convenient, see Fig. 23.
Gas solenoids 8)-9)(Fig. 24) must be as close as possible to the
burner to ensure gas reaches the combustion head within the
safety time range of 2 s.
Make sure that the pressure governor calibration range (colour of
the spring) comprises the pressure required by the burner.
Key Fig. 24
1 Gas input pipe
2 Manual valve
3 Vibration damping joint
4 Pressure gauge with pushbutton cock
5Filter
6 Pressure governor (vertical)
7 Minimum gas pressure switch
8 Safety solenoid VS (vertical)
9 Adjustment solenoid VR (vertical)
Three adjustments:
- ignition delivery (rapid opening)
- 1st stage delivery VR1 (slow opening)
- 2nd stage delivery VR2 (slow opening)
10 Standard issue burner gasket with flange
11 Burner
12 Gas valve 8)-9) leak detection control device.
In accordance with EN 676 Standards, gas valve leak detec-
tion control devices are compulsory for burners with maxi-
mum outputs of more than 1200 kW.
13 Gas train/burner adaptor
P1 Pressure at combustion head
P2 Pressure down-line from the pressure governor
P3 Pressure up-line from the filter
L Gas train supplied separately with the code indicated in
Tab. J
L1 The responsability of the installer
GAS TRAIN COMPONENTS
Tab. I
Fig. 23
D1137
Fig. 24
D901
Ø5 6 8 - 9
3/4” Multiblock MB ZR DLE 407
1” Multiblock MB ZR DLE 410
1”1/4 Multiblock MB ZR DLE 412
1”1/2 GF 515/1 FRS 515
MDV 515/5 +
ZR DLE 415/5
1”1/2 Multiblock MB ZR DLE 415
2” GF 520/1 FRS 520
MDV 520/5 +
ZR DLE 420/5
2” Multiblock MB ZR DLE 420