Technical Manual
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Central Operation Unit Smart
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Phone: +49-2263-
880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
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47
Standby mode
The standby mode is used when nobody is using the room. It should cause a slight reduction/increase
in the temperature. This value should be set considerably lower than that of the night operating
mode to enable the room to heat up/cool down more quickly.
The value is freely parameterisable and refers to the basic comfort value. So if a setback of 2K has
been parameterised and a basic comfort value of 21°C has been set, the setpoint for standby
operation mode is 19°C. In cooling mode there is a corresponding increase in the value.
The standby operating mode is then activated as soon as all other operating modes are deactivated.
This operation mode therefore also has no communication object.
Frost-/Heat protection mode
The frost protection operating mode is activated as soon as the controller has been assigned the
heating function, the heat protection operating mode is activated as soon as the controller has been
assigned the cooling function. If the controller is assigned the Heating & Cooling function, a
combined operating mode called frost/heat protection is activated.
The frost/heat protection operating mode automatically switches on heating or cooling when the
temperature falls below or exceeds the parameterised temperature. The temperature is
parameterised here as an absolute value. If, for example, the temperature must not fall below a
certain value during a longer absence, the frost protection mode should be activated.
The 1 bit communication object for this operation mode is shown in the following table:
Number
Name
Length
Usage
158
Frost protection mode
1 Bit
Activating the frost protection operating mode
158
Heat protection mode
1 Bit
Activating the heat protection operating mode
158
Mode frost/heat protection
1 Bit
Activation of the frost/heat protection mode
Table 37: Communication object
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Frost/Heat protection 1bit
