20023724
7
GB
3.4 GAS TRAIN, (as EN 676)
The gas train is supplied separately, for its adjustment see the enclosed instructions.
3.5 GAS TRAIN ELECTRICITY SUPPLY
The gas train’s power cables can be fed to the right or
left of the burner, as illustrated in figure 6.
Depending on the entry point, the cable clamp with
pressure test point (1) and simple cable clamp (2) may
need swapping over.
Consequently, you must make sure:
cable clamp (1) is positioned correctly;
the tube is positioned correctly so that there are no
restrictions likely to impede air flowing to the pres-
sure switch.
WARNING
If necessary, cut the tube to the right size.
3.6 GAS FEEDING LINE
GAS TRAIN
MATCHED
BURNER
CONNECTIONS
USE
TYPE CODE INLET OUTLET
MB ZRDLE 405 B01 3970539 BS1D Rp 1/2 Flange 1 Natural gas and LPG
MB ZRDLE 405 B01 3970540 BS2D Rp 3/4 Flange 2 Natural gas and LPG
MB ZRDLE 407 B01 3970538 BS2D Rp 3/4 Flange 2 Natural gas and LPG
MB ZRDLE 407 B01 3970541 BS3D - BS4D Rp 3/4 Flange 3 Natural gas 150kW and LPG
MB ZRDLE 410 B01 3970542 BS3D - BS4D Rp 1 1/4 Flange 3 Natural gas and LPG
MB ZRDLE 412 B01 3970543 BS3D - BS4D Rp 1 1/4 Flange 3 Natural gas
1 – Gas supply pipe
2 – Manual cock (charged to the installer)
3 – Gas pressure gauge (charged to the installer)
4 –Filter
5 – Gas pressure switch
6 – Safety valve
7 – Pressure governor
8 –1
st
and 2
nd
adjusting valve
M1 – Gas-supply pressure test point
M2 – Pressure coupling test point
M2
Fig. 7
D5209
123M15674
8
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