Riello FS20D 591M Installation, Use And Maintenance Instructions page 48

3.2 PROBE - ELECTRODE POSITIONING
~
Probe
D5104
3.3 GAS FEEDING LINE
1
1 – Gas supply pipe
2 – Manual cock (supplied by the installer)
3 – Gas pressure gauge (supplied by the installer)
4 – Filter
5 – Gas pressure switch
6 – Safety valve
7 – Pressure governor
8 – 1 st and 2 nd stage adjustment valve
GAS TRAIN ACCORDING TO EN 676
GAS TRAIN
TYPE
MBZRDLE 407 B01
MBZRDLE 410 B01
The gas train is supplied separately, for its adjustment see the enclosed instructions.
2750
47
mm
2 3 M1
CONNECTIONS
CODE INLET
3970537 Rp 3/4
3970534 Rp 1
Ignition electrode
Diffuser
–
2
WARNING
4 5 6 7
M1 – Gas-supply pressure test point
M2 – Pressure coupling test point
OUTLET
Rp 3/4
Rp 3/4
4 GB
Ionization probe
Electrode
3,7
3
mm
8
D4161
USE
Natural gas ≤ 180 kW and LPG
Natural gas and LPG
=
M2