Regulus SRS 3 - D 6.6-6.7 - Heat Release & Hygiene Functions

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ulus.
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Protective functions menu 6
D 6.6 - Recooling menu 6.6
At the end of a sunny day the temperature in a storage tank may easily reach high values. In order to prevent
further temperature increase the next day, excess energy can be released into the air via collectors under
cloudy conditions or after sunset.
If the temperature in the storage tank exceeds the value „Recool Tsetpoint” and the collector is at least
by 20 °C cooler than the storage tank, the solar pump starts. The storage tank is then cooled down until the
„Recool Tsetpoint” is reached. In systems with two storage tanks the setting applies to both storage tanks.
Setting range: Recooling off, on / default setting: off
Setting range: Recooling Tsetpoint from 0 °C to 99 °C / default setting: 70 °C
This function enables to release excess heat from the storage tank considerately and without
solar fluid overheating, via piping and collectors into the ambient air. It is recommended to keep
activated. Combinable with protective solar function.
D 6.7 - Anti-Legionella
menu 6.7
With the „AL function” activated the controller makes it possible to heat the storage tank up once at certain
intervals the („AL frequency”) to a higher temperature („AL Tsetpoint S2”), assuming that the energy
source allows this.
Setting range: AL function: On or Off / default setting: Off
Setting range: AL Tsetpoint S2: from 60 °C to 99 °C / default setting: 70 °C
Setting range: AL frequency: from 1 to 28 days / default setting: 7 days
AL function: Shows the last time the AL function was active
The anti-Legionella function is switched off at delivery. This function is only relevant for storage
tanks where sensor 2 is installed. Whenever heating-up has been carried out with the anti-
Legionella function switched on, an information message with the date appears on the display.
During the anti-Legionella function the storage tank is heated up over the set value „Tmax S2“!
To provide complete protection against Legionella bacteria, the function must be applied to all
the tanks and sufficient energy must be available for safe heating the system up to the necessary
temperature. This protection is efficient only where a high temperature is present, that is why the
circulation pump shall be switched on at the same time, ensuring piping protection as well.
Caution
Danger
Danger
Caution