Designs
Connection and wiring diagram
A
PCB inside the boiler
B
Gas pressure switch (accessory)
C
Power supply
D
Vitotrol 100, UTA
E
Vitotrol 100, RT
46
F
Vitotrol 100, UTD
G
Vitotrol 100, UTD-RF
CN8 Stepper motor for diverter valve
T8
Ignition transformer and ionisa-
tion