Siemens RDG400KN Basic Documentation page 26

Example
P09 ≥ P10
(energy saving concept)
Example
Economy mode
Protection mode
Caution
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Siemens
Building Technologies
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P09 P10
∂ If the minimum limit P09 is set higher than the limit P10, ...
– the setting range of the cooling setpoint is from P09...40 °C in place of
5...40 °C,
– the setting range of the heating setpoint is from 5...P10 °C in place of
5...40 °C.
This allows the user to limit the maximum heating setpoint and the minimum
cooling setpoint. This concept helps save energy costs.
∂ For heating OR cooling applications:
– The thermostat operates with the setpoint of the active sequence:
In heating mode, the heating setpoint is active and adjustable via the rotary
knob. In cooling mode, the cooling setpoint is active and adjustable via the
rotary knob
– Switching from the heating to the cooling setpoint and vice versa occurs
when the room temperature reaches the adjusted limitation (P09 or P10) of
the inactive sequence (e.g. the thermostat is in the heating sequence and
runs with the heating setpoint). When the room temperature reaches P09,
the thermostat switches to cooling mode and runs with the cooling setpoint
as long as the room temperature does not drop below P10
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P10
Use P11 and P12 to adjust the Economy mode setpoints.
The heating setpoint is factory-set to 15 °C, and the cooling setpoint to 30 °C.
Use P65 and P66 to adjust the Protection mode setpoints.
The heating setpoint is factory-set to 8 °C (frost protection) and to OFF for cooling.
If a setpoint (Economy or Protection) is set to OFF, the thermostat does not control
the room temperature in the corresponding mode (heating or cooling).
This means no protective heating or cooling function and thus risk of frost in
heating mode or risk of overtemperature in cooling mode!
The Economy setpoints are accessible at the Service level (P11, P12), the
Protection setpoints at the Expert level (P65, P66).
RDG400KN,RGD405KN Basic documentation
Cooling setpoint adjustable: 18...25 °C
Heating setpoint adjustable: 18...25 °C
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Cooling setpoint adjustable: 25...40 °C
Heating setpoint adjustable: 5...21 °C
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P09
CE1P3192en
2017-02-17