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EGULUS - SRS 3 Controller - www.re
ulus.
B 3 - Solar system with by-pass
Example: solar system with a long piping from pump station to storage tank.
Sensor connection - max. 12V Mains voltage - 230V 50Hz
Low voltage - sensor connection
Terminal: connection for:
S1 (2×) sensor 1 collector
S2 (2×) sensor 2 storage tank
S3 (2×) sensor 3 before bypass
The polarity of the sensors is freely selectable.
Mains voltage - 230V 50Hz
Terminal: connection for:
L mains phase conductor L
N mains neutral conductor N
R1 pump L (speed)
N pump N
R2 zone valve L
N zone valve N
PE protective conductor (green-yellow)
Note: Actuating direction of the bypass valve:
R2 off = valve closed = flow direction B-AB = storage tank charging
R2 on = valve open = flow direction A-AB = bypass without storage tank charging
R1 output: for speed control of standard pumps, minimum load 20VA.
B 4 - Solar system with return line preheating
Sensor connection - max. 12V Mains voltage - 230V 50Hz
Low voltage - sensor connection
Terminal: connection for:
S1 (2×) sensor 1 collector
S2 (2×) sensor 2 storage tank
S3 (2×) sensor 3 heating circuit return
The polarity of the sensors is freely selectable.
Mains voltage - 230V 50Hz
Terminal: connection for:
L mains phase conductor L
N mains neutral conductor N
R1 pump L (speed)
N pump N
R2 zone valve L
N zone valve N
PE protective conductor (green-yellow)
Note: Actuating direction of the return-line zone valve:
R2 off = valve closed = flow direction B-AB = no backup heating
R2 on = valve open = flow A-AB through the storage tank
R1 output: for speed control of standard pumps, minimum load 20VA.
Caution
Caution
max. 12V 230VAC
Sensor side
Danger
Danger
Mains side
Mains
230VAC
Optional
A
B
AB
max. 12V 230VAC
Sensor side
Danger
Danger
Mains side
Mains
230VAC
Optional
B
AB
A
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