STIEBEL ELTRON SOM 7 PLUS Bedienung Und Installation Seite 34

2.5.5 Solar heating system with two cylinders and valve logic
with 2 cylinder, 3 sensors, 1 solar pump and three-way valve for cylinder stratification. As an option, sensor S4/TRL can be used for
producing the heat statement.
R1
Symbol Description
S1 Collector sensor
S2 Cylinder sensor 1
S3 Cylinder sensor 2
S4/TRL Sensor for the heat statement (option)
R1 Solar circuit pump
R2 Three-way valve
2.5.6 Solar heating system with two cylinders and pump logic with 2 cylinders, 3 sensors and 2 solar pumps.
S4
R1
Symbol Description
S1 Collector sensor
S2 Cylinder sensor 1
S3 Cylinder sensor 2
S4 Sensor (option)
R1 Solar circuit pump cylinder 1
R2 Solar circuit pump cylinder 2
34
S1
R2
F\OLQGHU 
S4 / TRL
S1
cylinder 1
R2
F\OLQGHU 
S2 S3
cylinder 2
S2
S3