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Viessmann Manuals
Boiler
VITOCROSSAL CRU 800 kW
Service instructions manual
Connection Diagrams Burner Control Unit Connection Diagram - Viessmann VITOCROSSAL CRU 800 kW Service Instructions Manual
Gas condensing boiler
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Connection diagrams
Burner control unit connection diagram
Fig. 34
Burner control unit VUC 310
A
Flame monitor (ionisation current)
B
Vitotronic control unit
C
Servomotor for rotary damper or 2/2-way solenoid
D
valve
Flue gas damper
E
Ignition unit
F
Fuel valve BV1
G
Fan motor with PWM switching and feedback
H
Display and programming unit
K
58
Air pressure switch 1
L
Gas pressure switch GDW1
M
Air pressure switch 2
N
Flue gas temperature sensor 1
O
Flue gas temperature sensor 2
P
Boiler water temperature sensor 1
R
S
Boiler water temperature sensor 2
Terminal box
T
Gas pressure switch 2
U
Fuel valve BV2
V
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This manual is also suitable for:
Vitocrossal cru 1000 kw
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