Regulus SRS 3 - D 5.10 - Storage Tank Priority

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ulus.
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Settings menu 5
D 5.10 - Priority sensor menu 5.x = charging priority in systems with two storage tanks
A setting must be made as to which storage tank (storage tank sensor) has priority for charging and will be
charged first.
Setting range: Priority S2, S3 / default setting: S2
A) The higher priority storage tank is always charged first.
B) After the desired temperature (TmaxSx) is reached in the higher priority storage tank, charging
is diverted to the lower priority storage tank.
C) If the collector temperature does not enable charging the higher priority tank, and at the same
time the temperature in the higher priority tank is above Tpriority, then charging is diverted to the
lower priority tank.
Note: Tpriority (=lower temperature limit for absolute priority, only the priority storage tank is
charged below this limit)
D) Until the priority tank reaches the desired temperature, charging of the lower-priority storage
tank is interrupted at regular intervals to check whether the temperature increase at the collector
can enable charging of the higher-priority storage tank.
Setting range: S2 or S3 / default setting: S2
Example: Setting: Priority sensor = S2 Tpriority = 40 °C
Charging interruption = 10 min Increase = 3 °C/min
T maxS2 = 60 °C ΔT R1 = 10 °C
If the temperature at S2 is below 60 °C…..….…… S2 storage tank (higher priority) is charged
A) If the temperature at S2 is above 60 °C…..……
B) Temperature difference between collector and S2 tank…. S1-S2 < ΔT R1
and at the same time S2 > 40 °C…………………… S3 storage tank (lower priority) is charged
C) After 10 min. (Charging interruption) the solar pump(s) stop and the temperature increase is
measured. If Increase > 3 °C/min., Interruption time is extended until the switching condition
S1-S2 < ΔT R1 for S2 storage tank is met.
If the increase is less than 3 °C/min.…………………………………S3 storage tank is charged
Caution