Siemens RDB160BN - Advanced Features: Mold Protection and Key Lock

Applications
Additional functions
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External / return air temperature sensor
The thermostat measures the room temperature with a built-in sensor, an
external room temperature sensor (QAA2012) or an external return air
temperature sensor (QAP2012.150) connected to a multifunctional input AI.
Input AI must be commissioned accordingly.
For detailed information about the input settings refer to chapter
'Multifunctional input, digital input [➙ 24]'.
Mold protection
Mold protection helps to avoid damage from moisture due to a lack of air
circulation. In very warm and humid climates, the fan can be operated
continuously at a low speed in all operating modes. Mold protection can be
activated via parameter P04.
Chilled / heated ceiling
Both heating and cooling sequences can also be used for chilled / heated
ceiling.
Fan coil unit heating / cooling sequences for ceiling application can be used by
disabling the fan via parameter P25 and locking the fan button via parameter
P66.
Dew point monitoring
Dew point monitoring is essential to avoid condensation on the chilled ceiling. It
helps to avoid damage to the building. Cooling with a disabled fan can be set
via parameter P25. An external dew point monitoring must be installed.
A contact can be used on the digital input (DI) to switch off all outputs and
prevent condensation.
Key lock
A combination of keys can be defined via parameter P65 or via BACnet object
to lock or unlock to users.
Configuration
options P65
Fan button /
On/Off button
Active
Setpoint
Up/Down
buttons
Active
Fan button
Active
0
1
X
2
X
3
X
X
4
X
5
X
X
6
X
X
7 (Factory setting)
X
X
X
Lock setting access
Access to parameter settings can be blocked while all buttons are active for
standard operation. This function must be activated via BACnet.