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6.4. - Thermostat
Thermostat is used for time- and temperature controlled additional heating.
Settings range: On, Off
6.4.1. - TH Set
Taget temperature at thermostat sensor 1. Below this temperature, additional heating is switched on, till
TH set + hysteresis is reached.
Settings range: -20 bis 99°C / Default setting: 50
6.4.2. - TH hysteresis
Hysteresis of setpoint temperature.
Settings range: 1 bis 50°C / Default setting: 10K
Temperature values which are set too high can lead to scalding or damage to the system. Scalding pro-
tection must be provided by the customer!
Danger!
Caution
In Energy savings mode, different settings may apply, see e.g. T eco.
6.4.3. - Thermostat sensor 1
T set is measured with thermostat sensor 1.
When thermostat sensor 2 is connected, the relay switches on when T set is undershot at thermostat Sensor 1, and
switches off when T set + hysteresis at thermostat sensor 2 is exceeded.
Settings range: S1-S8, VFS1-2, active storage / Default setting: none
6.4.4. - Thermostat sensor 2
Optional switch off sensor
When T set + hysteresis is exceeded at the optional thermostat sensor 2, the relay is switched off.
Settings range: S1-S8, VFS1-2, active storage / Default setting: none
Special functions
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6.4.5. - T eco
For Energy saving mode
When Energy saving mode is active: During solar charge T eco is used instead of TH set. When the temperature
drops below T eco at thermostat sensor 1, the relay is switched on and heats up to T eco + hysteresis.
Settings range: 0-99°C / Default setting: 40°C
6.4.6. - Storage
For Energy saving mode
Loading this storage activates the Energy saving mode
When this storage is charge by solar, additional heating is only switched on when the temperature is below T eco.
Settings range: (Storage sensors) / Default setting:
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rst storage
6.4.7. - Energy saving mode
Energy saving mode switches the heating on when T eco is undershot und heats up to T eco + hysteresis when solar
charge is active.
Settings range: On, Off / Default setting: Off
6.4.8. - Periods
Thermostat activity times
Set the desired periods of time when the thermostat should be active. 3 periods can be set per day, settings can also
be copied to other days. Outside the set times the thermostat is switched off.
Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00