Viessmann Vitopend 100-W Installation And Service Instructions For Contractors page 48

Gas system and combi boilers for open flue operation natural gas and lpg version
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Designs
Connection and wiring diagram
A
PCB inside the boiler
B
Gas pressure switch (acces-
sory)
C
Power supply
D
Vitotrol 100, UTA
48
E
Vitotrol 100, RT
F
Vitotrol 100, UTD
G
Vitotrol 100, UTD-RF
CN8
Stepper motor for diverter
valve

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