Wolf SM2 Installation And Operating Instructions Manual page 20

System configuration 4.1:
Mains
Diverter valve
230 V
AC
Solar circuit
pump SKP1
20
Electrical connection
Single circuit system with two internal indirect solar coils
inside the cylinder
3WUV
DHW
circulation
pump ZKP
(option)
Solar
sensor
cylinder 1
SFS1
Solar
sensor
collector
SFK1
Collector
Return
sensor
RLF
Flow rate
generator sensor
DFG cylinder 2
DHW
cylinder
3062438_0309
Solar
SFS2