Room Temperature Setpoints; Description - Siemens RDF800KN Series Manual

Setpoint mode
Comfort mode
Temporary setpoint
Setpoint limitation
P09 < P10
(Comfort concept)
Example:
P09 ≥ P10
(energy saving concept)
Siemens
Smart Infrastructure
3.3

Room temperature setpoints

3.3.1

Description

icon when it is available on the display and press +/– to adjust the
Touch the
desired room temperature setpoint.
The factory setting for the Comfort basic setpoint is 21 °C. It can be changed in the
thermostat's EEPROM using P08 or the bus with the communication object
"Comfort basic setpoint". The last option selected is always used.
The Comfort setpoint can be adjusted using +/–, or the bus from a remote device
such as a touchpanel, or operating unit. The last option selected is always used.
If the "Temporary setpoint" function is enabled using P69, the Comfort setpoint is
set back to the Comfort basic setpoint stored in P08 when the operating mode
changes.
For comfort or energy saving purposes, the setpoint setting range can be limited to
a minimum (P09) and maximum (P10).
·
If the minimum limit P09 is set lower than the maximum limit P10, both heating
and cooling are adjustable between these two limits.
·
The customer adjusts the desired setpoint and the thermostat controls the
room temperature accordingly.
·
For 4-pipe applications, the selected comfort setpoint is in the middle of the
dead zone (P33). The unit stops energizing the heating/cooling outputs as
soon as the room temperature reaches the dead zone.
5°C 18°C 25°C
P09 P10
·
If the minimum limit P09 is set higher than the limit P10, then...
– 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 4-pipe applications:
– The thermostat runs with the setpoint of the active sequence:
In heating mode, the heating setpoint is active and adjustable using +/-;
In cooling mode, the cooling setpoint is active and adjustable using +/-.
– Switching from the heating setpoint to the cooling setpoint and vice-versa
occurs when the room temperature reaches the adjusted limitation (P09 or
RDF800KN.., RDF800KN/VB, RDD810KN/NF
Cooling setpoint adjustable: 18...25 °C
Heating setpoint adjustable: 18...25 °C
40°C
Basic documentation
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CE1P3174en
2020-02-21