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Siemens
RDU341 Basic Documentation
CE1P3172en
Building Technologies
2015-06-08
3.3 Room temperature setpoints
3.3.1 Description
The factory setting for the Comfort basic setpoint is
21 °C
and can be changed in
the thermostat’s EEPROM via parameter P08 or via bus with communication object
" Comfort basic setpoint". The last intervention always wins.
The Comfort setpoint can be adjusted via
+/-
buttons, or via bus from a remote
device like a touchpanel, operating unit, etc.
The last intervention always wins.
If the “Temporary setpoint” function is enabled via parameter P69, the Comfort
setpoint adjusted via the +/- buttons or via bus is set back to the Comfort basic
setpoint stored in P08 when the operating mode changes.
For energy saving purposes, the setpoint setting 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 2 limits
·
For heating
or
cooling applications (e.g. single duct):
– The setting range in cooling mode is from
P09…40 °C
in place of 5…40 °C
– The setting range in heating mode is from
5…P10 °C
in place of 5…40 °C
·
For heating
and
cooling applications (e.g. single duct with el. heater):
–
P09
is the setpoint for cooling and
P10
the setpoint for heating
– The setpoint can no longer be adjusted via the rotary knob
Examples
Single duct
Heating OR cooling
Single duct & el. heater
Heating AND cooling
P09 < P10
Cooling setpoint adjustable 18…25 °C
Heating setpoint adjustable 18…25 °C
Cooling setpoint adjustable 18…25 °C
Heating setpoint adjustable 18…25 °C
P09
≥
P10
Cooling setpoint adjustable 25…40 °C
Heating setpoint adjustable 5…21 °C
Cooling fixed = 25 °C (P09)
Heating fixed = 21 °C (P10)
Use control parameters 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 control parameters 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.
Comfort mode
Temporary setpoint
Setpoint limitation
P09 < P10
P09
≥
P10
Economy mode
Protection mode
