Setpoints - Siemens RDF300 Documentation

Comfort mode
Setpoint limitation
P09 < P10
P09 ≥ P10
Examples
P09 < P10
P09 ≥ P10
Temporary setpoint
Energy Saving
mode
Standby mode
Caution
10 / 40
Siemens
Building Technologies
4.3

Setpoints

The setpoint in Comfort mode can be adjusted via the +/- buttons.
For energy saving purposes, the setpoint adjusting range can be limited to
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.
• For heating or cooling applications (e.g. 2-pipe)
– The setting range in cooling mode is from P09...40° instead of 5...40°
– The setting range in heating mode is from 5...P10° instead of 5...40°
• For heating and cooling applications (e.g. 4-pipe)
– P09 is the setpoint for cooling and P10 the setpoint for heating;
– the setpoint can no longer be adjusted via the +/- buttons
2-pipe Heating OR cooling
5°C 18°C 25°C
P09 P10
Cooling setpoint adjustable 18...25°C
Heating setpoint adjustable 18...25°C
5°C 21°C 25°C
P10 P09
Cooling settable 25...40°C
Heating settable 5...21°C
If the "Temporary setpoint function" is enabled via parameter P69, the setpoint
adjusted via the +/- buttons is set back to the Comfort basic setpoint when the
operating mode changes.
The factory setting for the Comfort basic setpoint is 21 °C and can be changed via
parameter P08.
Use control parameters P11 and P12 to adjust the Economy mode setpoints.
The heating setpoint is factory-set to 15 °C and to 30 °C for cooling.
Use control parameters P65 and P66 to adjust the Standby mode setpoints.
The heating setpoint is factory-set to 8 °C (frost protection) and to OFF for cooling.
If a setpoint is set to OFF (P65, P66), the controller does not maintain the setpoint
in the corresponding mode (heating or cooling).
This means no protective heating or cooling function and thus risk of frost in the
heating mode or risk of overheat in cooling mode!
RDF300.../RDF340.../RDF400... Basic Documentation
4BFunctions
4-pipe Heating AND cooling
40°C 5°C 18°C
P09
Cooling setpoint adjustable 18...25°C
Heating setpoint adjustable 18...25°C
Cooling fixed = 25°C (P09)
Heating fixed = 21°C (P10)
40°C
25°C 40°C
P10
CE1P3076en
28 Aug 2008