Riello GI/EMME 300 Manuel D'entretien page 17

D1943
GAS TRAIN L
Ø Code
175 kW 250 kW 332 kW
3/4" 3970150 12.0
1" 3970151 6.0
1" 1/4 3970152 3.5
1" 1/2 3970153 -
1" 1/2 3970183 -
The manifold pressure loss values indicated in the table are for natural gas G20. For:
• G25 multiply the values by 1.3;
• G31 (LPG) multiply the values by 0.41.
D1940
Code
∆p mbar at:
12
21.0 35.0 3010123
11.0 17.0 3010123
6.0 10.0 3010123
- 6.4 3010125
- 5.0 3010123
FIXING TO THE BOILER
In order to divide the combustion head from the
rest of the burner, you have to:
1) remove the connection 1 from the two val-
ves;
2) remove the four screws 2 - 3;
3) slide the burner body A along the rails 4;
4) mount the group B to the boiler plate 6
interposing the gasket 5.
Fit the nozzles and adjust the combustion head
(as specified below). Mount the group A to the
boiler front.
GAS TRAIN ACCORDING TO
REGULATION EN 676
1 Gas input pipe
2 Manual valve
3 Vibration damping joint
4 Pressure gauge with pushbutton cock
5 Filter
6 Pressure governor (vertical)
7 Minimum gas pressure switch
8 Safety solenoid valve VS (vertical)
9 Adjustment solenoid valve 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 detection control devices
are compulsory for burners with maxi-
mum outputs of more than 1200 kW.
Supplied separately from gas train on
request.
13 Gas train-burner adaptor
Supplied separately from gas train on
request.
P1 Pressure at combustion head
P2 Pressure down-line from the pressure
governor
P3 Pressure up-line from the filter
L Gas train suppled separately with the code
indicated in table.
L1 At the responsability of the installer.
Code
Filter Regulator
13
5
3000824 Multibloc MB ZRDLE 407
3000824 Multibloc MB ZRDLE 410
3010124 Multibloc MB ZRDLE 412
- GF 515/1 FRS 515
- Multibloc MB ZRDLE 415
17
COMPONENTS
Solenoid valves
6 8 - 9
MVD 515/5+ZRDLE 415/11