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Description
Line 100, 101
Effect
Description
Line 102
Effect
Correction
Example with formula
Siemens Building Technologies
HVAC Products
5
Description of the OEM settings
Space heating OEM
5.1
Maximum setpoint (TRwMax) and minimum
setpoint (TRwMin) of room temperature
The nominal setpoint of the room temperature can be adjusted within a certain setting
range. That setting range is limited by the maximum room temperature setpoint
(TrwMax) and the minimum room temperature setpoint (TrwMin).
1.
Press the line selection buttons to select line 100 or 101.
2.
Press the + / – buttons to set the maximum rate of increase.
Line
Setting range
100
TRwMin ... 35
101
4... TRwMax
The upper or lower limit of the nominal room temperature setpoint will be changed.
5.2
Gain factor of room influence (KORR)
Defines the influence of room temperature setpoint deviations on the controlled system.
The room influence can be activated and deactivated (operating line 75).
1.
Press the line selection buttons to select line 102.
2.
Press the + / – buttons to set the gain factor.
Setting range
0...20
Changing this setting has the following impact:
Increase:
Authority of room influence will increase
Decrease:
Authority of room influence will decrease
The following example shows how and according to which formula the room
temperature setpoint will be corrected.
Room temperature setpoint
Correction factor
KORR
TRwk = TRw +
(TRw - TRx)
2
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)
Basic Documentation QAA73.110 Room unit
Error! Style not defined.
Unit
°C
°C
Unit
–
TRw
= Actual room temperature
TRx
= 22 °C
KORR
= 8
Factory setting
35
10
Factory setting
4
53/70
CE1P2284en
19.06.2002
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