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Siemens Room Unit for Boiler Control CE1U2283en
Building Technologies Description of room unit settings 2015-09-16
The following example shows how and according to which formula the room
temperature setpoint will be corrected.
Room temperature setpoint TRw = Actual room temperature
TRx = 22 °C
Correction factor KORR = 8
TRwk = TRw +
KORR
2
(TRw - TRx)
TRwk = 20 °C + 4 (20 °C – 22 °C) = 12 °C
KORR Constant for room influence
TRx Actual value of the room temperature
TRw Room temperature setpoint
TRwk Room temperature setpoint (readjusted)
As the example shows, if the room temperature is 2 °C too high, the room influence
temporarily shifts the room temperature setpoint down to a level of 12 °C.
30
252015
10
5
30
25
20
15
10
5
TRwk [°C]
KORR=4
TRx
2284d03
KORR=10
°C
TRw
KORR works only if the room temperature influence is activated.
Enables the control system's rate of response to be matched to the type of building
construction.
When the outside temperature varies, the room temperature changes at different
rates, depending on the building's thermal storage capacity.
The above setting ensures that the generation of the composite outside
temperature will be matched to the type of building construction. Also refer to
"Composite outside temperature".
5…10 Heavy building structures:
The room temperature will respond slower to outside temperature variations
1…5 Light building structures:
The room temperature will respond quicker to outside temperature variations
Owing to the temperature checkback signal received from the room, a constant
room temperature is maintained and, if required, quick setback enabled.
Room temperature deviation is the temperature differential between actual room
temperature and room temperature setpoint.
The setting will activate the room influence on the heating circuit.
Deviations of the actual room temperature from the setpoint are acquired and
taken into account by temperature control.
Note
Type of building
construction (BUILD)
Room influence
(AMBON)
Room influence
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