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Tmin S1
Enable/start temperature at sensor 1:
If this value on the sensor 1 (collector sensor) is exceeded and the other conditions are not fulfilled, the controller will turn on the affiliated
pump or the valve. If the temperature on the sensor 1 falls 5 °C below this value, the pump or the valve will be turned off again.
Tmin S2
Switch off temperature at sensor 2:
If this value is exceeded on the sensor 2, the controller turn off the affiliated pump or the valve. If this value on the sensor 2 is undershot and
the other conditions are fulfilled, the controller will turn on the pump or the valve.
Temperature values which are set too high can lead to scalding or damage to the system. Scalding protection must be provided
by the customer!
In multiple storage systems, if the shut-down temperature S2 is exceeded, a downstream installed storage or storage area is switched to.
ΔT R1
On/off temperature difference for solar charge through relay R1:
If the temperature difference ΔT Solar between the reference sensors S1 and S2 is exceeded and the other conditions are fulfilled, the con-
troller will turn on the pump on the relay R1. If the temperature difference falls to ΔT Off, the pump will be turned off.
If the set temperature difference is too small, this may lead to ineffective operation depending on the system and sensor pos-
itioning. For speed regulation (" Speed control " on page 20), special switch conditions apply!
Tset On
Reference temperature sensor 1
Heating mode = 1. Value smaller than 2. value,
Cooling mod = 1. Value bigger than 2. value.
If the set switch-on value (1. Value) at sensor 1 undershot and thermostat function is approved (see also 5.5), backup heating is switched
on until temperature exceeds value for switch off (2. Value).
Temperature values which are set too high can lead to scalding or damage to the system. Scalding protection must be provided
by the customer!
If sensor S2 is connected, S1 functions as a switch-on sensor and S2 as a switch-off sensor.
Tmax S1
Switch off temperature at sensor 1
If this value is exceeded on the sensor 1, the controller turn off the affiliated pump or the valve. If sensor 1 falls below this value again and
the other conditions are also met, then the controller switches the pump and/or valve on again.
Temperature values which are set too high can lead to scalding or damage to the system. Scalding protection must be provided
by the customer!
Thermostat periods
Here the desired periods are set in which the thermostat function is approved. For each weekday, three times can be specified, fur-
thermore, you can copy individual day to other days. The thermostat function is shut down outside of the set times.
Tmin Storage X
Switch off temperature at sensor S(X)
If this value is exceeded at sensor X then the controller switches the associated pump and/or valve off. If sensor (X) falls below this value
again and the other conditions are also met, then the controller switches the pump and/or valve on again.
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