Viessmann Vitoladens 300-C Installation And Service Instructions Manual page 100

Connection and wiring diagram
Connection and wiring diagram
External connection diagram
Fig. 79
A1 Main PCB
A2 Switching mode power supply
A3 Programming unit
A4 Burner control unit
A6 Coding card
A7 Connection adaptor
A8 LON communication module
S1 ON/OFF switch
S2 Reset button
Fan
A
Oil pump
B
100
(cont.)
Fuel valve stage 1
C
Fuel valve stage 2
D
X ... Electrical interfaces
Outside temperature sensor
!
Cylinder temperature sensor
%
Power supply 230 V/50 Hz
fÖ
Flame monitor
aXF
aVG KM-BUS
Power supply, internal extensions
aBH
Internal connecting cable
s-A