A3
Optolink
A4
Burner control unit
A5
Programming unit
A6
Coding card
A7
Connection adaptor
A8
LON communication module or
cascade communication mod-
ule
A9
Internal extension (acces-
sories)
S1
ON/OFF switch
S2
Reset button
X...
Electrical interfaces
!
Outside temperature sensor
?
Flow temperature sensor, low
loss header
%
Cylinder temperature sensor
(plug on the cable harness)
sÖ
Boiler circuit pump
dD
Flow switch
dG
Gas solenoid valve
fÖ
Power supply
lH
Power supply accessories and
Vitotrol 100
a-Ö
Fan motor
a-Ö
A Fan motor control
aYA
Gas pressure limiter
aVG
KM BUS
Connection and wiring diagram
–
external . . .
(cont.)
106
Designs
5692
761
GB
Summary of Contents for Vitodens 200-W WB2B Series
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Page 110: ...Parts lists cont 110 Parts lists 5692 761 GB...
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