116
Fig. 79
A1
Main PCB
A2
Switching mode power supply
A3
Optolink
A4
Burner control unit
A5
Programming unit
A6
Coding card
A7
Connection adaptor
A8
LON communication module
(Vitotronic 200)
A9
Internal H1 or H2 extension
S1
ON/OFF switch
S2
Reset button
X...
Electrical interface
!
Outside temperature sensor
?
Flow temperature sensor, low loss header
%
Cylinder temperature sensor
(plug on the cable harness)
sÖ
Internal circulation pump
sA
No function
dG
Gas solenoid valve
fÖ
Power supply
lH
Power supply for accessories and Vitotrol 100
a-Ö
Fan motor
a-Ö
A Fan motor control
aYA
Gas pressure switch
aVG
KM-BUS
CO
CO limiter
Connection and wiring diagrams
Connection and wiring diagram
–
external connections
5778741
Appendix