Viessmann Vitocrossal 200 Service Instructions For Contractors page 59

Gas condensing boiler with matrix cylinder burner
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Burner control unit connection diagram
A
A Burner control unit VUC 310
B Flame monitoring via an ionisation
current
C Vitotronic control unit
B
X
D
E
F
G
D Servomotor for rotary damper
E Ignition unit
F Fuel valve BV1
G Fuel valve BV2
Connection diagrams
(cont.)
C
59

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