Viessmann SDIO Installation And Service Instructions For Contractors page 33

Connection and wiring diagram
Temperature sensor, NTC 10 k
aÖ
led)
Transfer pump or 3-way diverter valve
sS
Solar circuit pump
sF
Power supply
fÖ
(cont.)
(TS4, if instal-
jF
Ω
aVG
PlusBus for connection to the HMU heat man-
agement unit, DIO electronics module or ADIO
electronics module
KM-BUS to Vitotronic boiler control unit
Specification
33