Viessmann VITOLIG 300 Service Instructions Manual page 29

Connection and wiring diagrams
M0c Induced draught fan motor
M0e Motor for heating surface clea-
ner
M0f Motor for ash removal
M2 Motor changeover unit
S1 Combustion chamber door
switch
S2 Shaker limit switch
S3 Capacitive proximity switch
(X14/3 black)
(X14/4 blue)
(X14/6 brown)
S3a Emergency stop switch
heating system
S4 Flap limit switch
S10 Zero point limit switch
S11 Position limit switch
V0a Combustion chamber tem-
perature sensor
V0c Flue gas temperature sensor
V4 Boiler water temperature sen-
sor
XA Terminal block fuse
XB Connection plug, supply auger
XD Terminal block 12 V DC/GND
XG Connection plug fan and Hall
generator
XN Connection plug
Power supply 230 VAC
XS Terminal block: Heating sys-
tem emergency stop switch
and changeover unit motor
X/STB Connection plug, high limit
safety cut-out, supply auger
100 °C
Connection and wiring diagrams
(cont.)
XV Terminal block 12 V/ext.
Heating demand and change-
over unit limit switch
XZ Connection plug, suction tur-
bine
X1 Display unit, control unit
X2 Power supply 230 VAC
X3 High limit safety cutout, boiler/
auger
X4 Supply auger
X5 Shaking
X6 Ignition
X7 Heating surface cleaner and
ash removal
X8 Fan motor capacitor
X9 Fan motor
X11 Flue gas temperature sensor
X12 Boiler water temperature sen-
sor and combustion chamber
temperature sensor
X13 Hall signal
X14 Proximity switch, pellet hopper
and shaker limit switch
X15 Combustion chamber door
switch
X16 External heat demand
X17 LON
X18 Analog 0 10 V
X19 Suction turbine
X20 Wand changeover
X21 Zero point/Position limit switch
X22 Flap limit switch
A Ignition element
B Hall generator
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