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If this temperature is exceeded at the collector sensor when the solar pump is on, a
warning is triggered. A red LED starts flashing and a warning message is shown on
the display.
Setting range: Collector alarm OFF, ON /
Default setting:
OFF
Setting range: Collector Tmax 60 °C to 299 °C /
Default setting:
115 °C
Setting range: Delay: 1 - 60 minut /
Default setting:
1 min.
Protective functions
Caution
This function causes energy loss via the collector!
As Regulus solar thermal systems are filled with antifreeze fluid, the
antifreeze protection shall remain off.
A two-stage frost protection function is available. In stage 1 the controller switches the
pump on for 1 minute every hour if the collector temperature drops below the set value
“Frost level 1”
. If the collector temperature drops further to the set value
“Frost level
2”
, the controller switches the pump on continuously. If the collector temperature then
exceeds the value
“Frost level 2”
by 2 °C, then the pump switches off again.
Setting range: Frost protection: ON, OFF / Default setting: OFF
Setting range: Frost level 1 -25 to 10 °C or OFF / Default setting: 7 °C
Setting range: Frost level 2 -25 to 8 °C or OFF / Default setting: 5 °C
Protection against pump seizing by regular short running of a pump or a valve. Seizing
may occur after longer inactivity of valves or pumps. If the seizing protection is activated,
the controller switches the relay in question and the connected appliance every day at
12:00 or weekly on Sundays at 12:00 (setting “weekly”) for 5 seconds in order to prevent
the pump and/or the valve from sticking after an extended stationary period.
Setting range: ABS R1: daily, weekly OFF / Default setting: daily
Setting range: ABS R2: daily, weekly OFF / Default setting: daily
5.5. - Frost protection
Caution
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.
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: ON, OFF / Default setting: OFF
Setting range: Recooling Tset: 0 °C to 99 °C / Default setting: 70 °C
5.6. - Seizing protection
5.7. - Collector alarm
