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REGULUS - STDC E Controller - www.regulus.eu
F 6.4 - Collector protection (solar only)
Collector protection prevents overheating of the collector. The pump is switched on to transfer heat from the
collector to the storage tank.
If
„CP Ton”
is exceeded at the collector sensor, the pump is switched on until the temperature reaches
„CP
Toff”
or the temperature
„CP Tmax storage”
is exceeded in the storage or pool.
Collector protection - Setting range: On, Off / default setting: Off
CP Ton settings range: 60 °C to 150 °C / Default: 110 °C
CP Toff settings range: 50 °C to Ton minus 10 °C / Default: 100 °C
CP Tmax storage settings range: 0 °C to 140 °C / Default: 90 °C
When collector protection is active, the storage or pool may get heated to a very high temperature!
F 6.5 - Col.- Alarm (solar only)
If this temperature is exceeded at the collector sensor when the solar pump is on, a warning is triggered and
a warning message is shown in the display.
Collector alarm settings range: on / off / Default: off
Col. alarm - setting range: 60 °C to 300 °C / Default: 150 °C
F 6.6 - Recooling (solar only)
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
„Recooling Tset”
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
„Recooling Tset”
is reached.
Setting range: Recooling off, on / default setting: off
Setting range: Recooling Tset from 0 °C to 99 °C / default setting: 70 °C
This function causes energy loss via the collector! It may be combined e.g. with the System
protection function (F 6.3) that causes collector overheating. It is also useful during holiday
absence when no heat is used.
F 6.7 - Anti-Legionella
With the
“AL function”
activated the STDC makes it possible to heat the storage tank up to a higher
temperature (
“AL Tsetpoint S2”
, provided that the energy source allows this. Time periods where the AL
heat up is attempted are to be setup in the menu
“AL times”
Once the temperature
“AL Tset S2”
is reached,
the controller will try to maintain this temperature for the time period set in
“AL residence time”
. When this
happened, the time and date is saved and displayed in the menulog
“AL heat”
.
AL Function settings range: on / off / Default: off
AL Tset S2 (Thermostat uses both S1 and S2) settings range: 60°C to 99°C / default setting: 70°C
AL residence time - settings range: 1 to 60 minutes / default setting: 15 minutes
AL heat. (no setting): Displays the date and time of the last successful AL heat up
AL times - settings range: Mo-Su , 0-24h/ default setting: daily 3-5h
The anti-Legionella function is switched off at delivery.
For solar systems:
This function may be
used for storage tanks with installed S2 sensor only. After each successful performance of AL
function, a message with performance date will appear on the display.
For Thermostat function:
S1 sensor is used for switching off. If both the sensors (S1 and S2) are connected, then both have
to reach the Legionella temperature
“T Legionela S2”
.
During the anti-Legionella function the storage tank is heated up over the set value
„Tmax S2”
.
This anti-Legionella function does not provide complete protection against Legionella, because the controller is
dependent on suf
fi
cient energy being fed in, and it is not possible to monitor the temperatures in the
entire range of the storage tanks and the connected piping system. To provide complete protection
against Legionella bacteria, it must be ensured that the temperature is raised to the necessary
value, and at the same time there must be water circulation in the storage tanks.
Danger
Caution
Caution
Danger
Danger
