STIEBEL ELTRON SOM 7 PLUS Bedienung Und Installation Seite 36

2.5.9 Solar heating system with heating circuit return temperature raising facility
with 1 cylinder, 4 sensors, 1 solar pump and three-way valve for cylinder stratification.
S1
R1
Symbol Description
S1 Collector sensor
S2 Cylinder sensor, bottom
S3 Cylinder sensor, top
S4 Heating circuit return
R1 Solar circuit pump
R2 Three-way valve
2.5.10 Solar thermal system with additional heat exchanger (anti-stagnation protection)
with 1 cylinder, 2 to 4 sensors, 2 solar circuit pumps and one heat exchanger
R1
S4/TR
Symbol Description
S1 Collector sensor
S2 Cylinder sensor, bottom
S3 Cylinder sensor, top (optional)
S4/TR Sensor for heat meters (optional)
R1 Solar circuit pump
R2 3-way valve
36
S3
S2
S1
R2
S4
R2
9%XV

S3
S2