Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 134

Designs
Connection and wiring diagrams
A12 Vitotronic 200 (boiler control
unit)
A13 Impressed current anode con-
nection
A14 Wiring chamber PCB
S1 Collector temperature sensor
(PCB A11)
S2 Cylinder temperature sensor S2
(PCB A11)
134
external . . .
(cont.)
S3 Cylinder temperature sensor S3
(PCB A11)
! Outside temperature sensor
? Flow temperature sensor
& Collector temperature sensor
sF Solar circuit pump 230 V
fÖ Mains input 230V/50Hz
lH Power supply of accessories
aVG KM BUS
aBH Power supply of accessories