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Menu „6. - Protective functions“ can be used to activate and set various protective functions.
The menu is closed by pressing “esc” or selecting “Exit”.
Protections
5. - Protections / Protective functions
Caution
This does not under any circumstances replace the safety facilities to be provided
by the customer!
5.1. - System protection
Highest Priority Protection
System protection prevents overheating of system components by automatic shutdown of the solar pump. If “SProt Ton” is
exceeded at the collector, the pump is switched off and stays off. The pump is activated again when the temperature drops
below “SProt TOff”.
System protection - Settings range: ON / OFF / Default setting: On
SP T on - Settings range: 60 °C to 150 °C / Default setting: 120 °C
SP T off - Settings range: 50 °C to T on minus 5 °C / Default setting: 115 °C
Caution
When system protection is on, the temperature in the idle collector will be very high, thus the pressure in the system
will rise and can damage your system.
Pay close attention to the instructions of the system manufacturer.
5.2. - Collector protection
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 tem-
perature “CP Tmax storage” is exceeded in the storage.
Collectorprotection - Settings range: On / Off / Default setting: Off
CP T on - Settings range: 60°C to 150°C / Default setting: 110°C
CP T off - Settings range: 50°C to T on minus 5°C / Default setting: 100°C
CP Storage S(x) Max - Settings range: 0°C to 140°C / Default setting: 90°C
Danger
Danger
When collector protection is active, the storage is heated up to „CP Storage S(x) Max“ beyond Tmax S2
(see „4.2. - Tmax S1“ on page 15) which can result in scalding and system damage.
In hydraulic systems with solar when the recooling function is activated excess energy from the storage tank is fed back into the collec-
tor. This only takes place if the temperature in the storage tank is higher than the value “Recool Tsetpoint” and the collector is at least 20°C
cooler than the storage tank and before the storage tank temperature has dropped below the value “Recool Tsetpoint” (Hysteresis 10°C).
In systems with two storage tanks the setting applies to both storage tanks.
Recooling - Settings range: On, Off / Default setting: Off
Rückkühl Tsoll - Settings range: 0°C to 99°C / Default setting: 70°C
5.3. - Recooling
Caution
Energy is lost via the collector when Recooling is active! Recooling should only be activated as exception,
when little or no heat is used, e.g. when the residents are on vacations.
System protection has a higher priority than collector protection. Even when the switch on conditions for collector
protection are present, the solar pump will be switched off when SP T on is reached.