Regulus SRS 3 - B19 - Single ΔT Controller & Thermostat Wiring; B20 - Dual ΔT Controllers Wiring

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EGULUS - SRS 3 Controller - www.re
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ulus.
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B19 - One temperature difference controller 1×∆T and one thermostat
(no solar functions)
Sensor connection - max. 12V Mains voltage - 230V 50Hz
Low voltage - sensor connection
Terminal: connection for:
S1 (2×) sensor 1 (control) source
S2 (2×) sensor 2 (reference) consumer
S3 (2×) sensor 3 (thermostat)
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 pump 2 L
N pump 2 N
PE protective conductor (green-yellow)
Brief description of switching function:egulátorem:
If temperature S1 > temperature S2, R1 pump relay switches.
The thermostat function works with sensor 3 and switches relay R2.
R1 output: for speed control of standard pumps, minimum load 20VA
max. 12V 230VAC
Sensor side
Danger
Danger
Mains side
Mains
230VAC
Sensor 3
Sensor 2
Sensor 1
Optional
Caution
B20 - Two temperature difference controllers 2×∆T (no solar functions)
Sensor connection - max. 12V Mains voltage - 230V 50Hz
Low voltage - sensor connection
Terminal: connection for:
S1 (2×) sensor 1
S2 (2×) sensor 2
S3 (2×) sensor 3
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 pump 2 L
N pump 2 N
PE protective conductor (green-yellow)
Brief description of switching function:
If temperature S1 > temperature S2, R1 pump relay switches.
If temperature S2 > temperature S3, R2 pump relay switches.
R1 output: for speed control of standard pumps, minimum load 20VA
max. 12V
230VAC
Sensor side
Danger
Danger
Mains side
Mains
230VAC
Optional
Sensor 3
Sensor 2
Sensor 1
Caution