Viessmann VITOPEND 200 Installation And Service Instructions Manual page 114

Designs
Connection and wiring diagram – external . . .
A3 Optolink
A4 Burner control unit
A5 Programming unit
A6 Coding card
A7 Connection adaptor
A8 LON communication module
(Vitotronic 200)
A9 Internal extension H1 or H2
S1 ON/OFF switch
S2 Reset button
!
Outside temperature sensor
114
(cont.)
?
Flow temperature sensor, low
loss header
%
Cylinder temperature sensor
sÖ
Internal circulation pump
dG
Gas solenoid valve
fÖ
Power supply
lH
Power supply accessories and
Vitotrol 100
a-Ö Fan motor
aYA Gas pressure limiter
aVG KM BUS