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17
Electrical connection
System configuration 2:
Single circuit system with return temperature raising for
central heating backup
Solar circuit
pump SKP1
DHW
circulation
pump ZKP
(option)
Mains
230 V
AC
Diverter valve
3WUV
Solar
sensor
DHW
cylinder
SFS1
Solar
sensor
collector
SFK1
Buffer
sensor
PF
Return
sensor
RLF
Collector
Solar cylinder
Heating
return
to the boiler
Return
heating
circuits