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Siemens
RDU340… Basic Documentation
CE1P3078en
Building Technologies
Functions
2014-11-03
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. single duct)
– 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 cooling and heating with el. heater applications (e.g. single duct)
– The setting range is from P09…40° instead of 5…40°
– The setpoint for the el. heater is maximal limited by P10
Examples
Single duct heating or cooling
Single duct cooling with el heater
P09 < P10
Cooling setpoint adjustable 18…25°C
Heating setpoint adjustable 18…25°C
Setpoint adjustable 18…25°C
Heating setpoint := Cooling setpoint –
dead zone
P09
≥
P10
Cooling settable 25…40°C
Heating settable 5…21°C
Setpoint adjustable 25…40°C
Heating setpoint := Cooling setpoint –
dead zone, but max (limited by) P10
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!
Comfort mode
Setpoint limitation
P09 < P10
P09
≥
P10
Temporary setpoint
Energy Saving
mode
Standby mode
Caution
