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Siemens
Flush-mounted Room Thermostat
CB1N3066en
Smart Infrastructure
2019-10-25
Operation
The thermostat acquires the room temperature via its built-in sensor and maintains the
setpoint by delivering 2-position valve control commands.
The switching differential is 1 K in heating mode and 1 K in cooling mode (adjustable
via parameters P08 and P09).
The display shows the acquired room temperature or the setpoint of the current
operating mode. This can be selected via parameter P18. Factory setting is display of
the current room temperature.
The heating symbol
or the cooling symbol
displays to indicate the output status of
the relays connected to the fan coil. This means that the symbol does not display when
the thermostat operates in the neutral zone. If the thermostat is under manual heating
or cooling changeover, the heating symbol
or the cooling symbol
displays
permanently to indicate the control sequence. i.e. heating or cooling. This means that
the symbol displays when the thermostat operates in the neutral zone.
If required, room temperature and setpoint can also be displayed in °F in place of °C by
changing parameter P17.
Operating modes
The following operating modes are available:
In Comfort mode, the thermostat maintains the setpoint, which can be adjusted via the
+
and
-
buttons. The fan can be set to automatic or manual fan speed: Low, medium or
high.
The setpoint setting range can be limited to a minimum (P05) and maximum (P06). This
helps prevent the waste of energy, and saving costs.
When the thermostat is in Protection mode
, the relevant setpoints of heating or
cooling are maintained. These setpoints can be adjusted via control parameters P03
and P04. Factory setting of both setpoints is OFF, indicating the thermostat is not
activated when in Protection mode.
To avoid damage due to moisture in very warm and humid climatic zones resulting from
lack of air circulation in Comfort mode, the fan can be kept running all the time (e.g. in
apartments or shops during unoccupied periods), when setting parameter P21 “ON in
dead zone”. In this case, the fan keeps running at minimum fan speed 1 in the neutral
zone.
Temperature control
Display
Comfort Mode
Tip!
Protection Mode
Avoiding damage
due to moisture
