14
6.5 Diagram 4: 2 collectors, 1 storage tank with 2 pumps
S3
S2
S5
S4
S7
1
A2
S1
PE
S1
L
N
N
A1
S2
S7
S3
S4
S5
S6
N
A2
N
A3
230V connections
L
Mains phase
N
Neutral conductor - mains and outputs
A1
Solar circuit pump 1 (switching output 1)
A2
Solar circuit pump 2 (switching output 2)
A3
Independent controller (switching output 3)
Sensor connections
S1
Collector array 1
S2
Lower storage tank
S3
Collector array 2
S4
Collector return
S5
Optional: cooling or heating or temp. difference controller
S6
Option: independent controller; other temperature display
S7
Option: flow meter
