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Siemens
RDG400KN,RGD405KN Basic documentation
CE1P3192en
Building Technologies
2017-02-17
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 P08 or via bus with communication object "Comfort
basic setpoint". The last intervention always wins.
For
applications with heating and cooling sequence and a dead zone greater
than 0 °C
, the basic Comfort setpoint always remains the reference for the heating
sequence.
However, the Comfort setpoint is either the heating setpoint or the cooling setpoint
according to the active sequence (heating or cooling). See also the table in section
3.3.2 and hysteresis behavior, section 3.6.2.
The current setpoint also appears on the RDG..’s display. It can be adjusted via the
rotary knob, or via bus from a remote device like a touch panel, operating unit, etc.
The last intervention always wins.
The thermostat also shows the symbol of the active sequence while the rotary
knob is turned:
– Setpoint and heating symbol ( ) show that the Comfort setpoint "Heating" is
being adjusted
– Setpoint and cooling symbol (
) show that the Comfort setpoint "Cooling" is
being adjusted
31
92
z1
1
P33
w
(w)
Dead zone
Setpoint heating sequence
Setpoint cooling sequence
Adjusting the Comfort setpoint via rotary knob causes a shift of the dead zone.
Although only
one
setpoint shows on the RDG..’s display, both setpoints are
shifted by the same value.
If the "Temporary setpoint" function is enabled via P69, the Comfort setpoint
adjusted via the rotary knob, or via bus, 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
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
∂
The customer adjusts the desired setpoint and the thermostat controls the room
temperature accordingly
Comfort mode
Setpoint adjustment
Temporary setpoint
Setpoint limitation
P09 < P10
(comfort concept)