Riello MB 412/2 Montage- Und Bedienungsanleitung Seite 46

4.6.1 Connections for burners with terminal board
The gas trains shown in Tab. D are prepared in the factory to be
connected in accordance with the electrical diagram shown in
Fig. 5.
Code Model
3970152 MB 412/2 - RT 20
3970183 MB 415/2 - RT 20
3970184 MB 420/2 - RT 20
The gas train shown in Tab. E is prepared in the factory to be con-
nected in accordance with the electrical diagram shown in Fig. 6.
Code Model
3970185 MB 420/2 CT RT 20
Key
PG Min gas pressure switch
V Valve group V1 - V2 - VS
VPS Valve leak detection control device
BN Brown
BU Blue
BK Black
YE Yellow
20049406
Installation
3
Tab. D
Tab. E
20050035
VPS
L1
N
B5
T6
T7
T8
20050037
8 GB
PG
2 1 1 2 3
PG
2 1
3 1 2 3
VS
V1
V2
V
Fig. 5
VS
V1
V2
V
Fig. 6