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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the EXP settings
18.10.2002
5.57 Adaption sensitivity 2 (ZAF2)
•
Different heating curve adaptions depending on the outside temperature
Adaption sensitivity 2 serves for adapting the heating curve in the temperature range
below
4 °C (also refer to section "Adaption of the heating curve“, operating line 726).
Setting range
Unit
Factory setting
1...15 –
15
The level of adaption sensitivity is automatically adapted by the controller and, there-
fore, need not be manually adjusted.
The heating curve in the temperature range below 4 °C will be adapted differently, de-
pending on the level of adaption sensitivity 2.
Increase: More
adaption
Decrease: Less
adaption
Each time a significant adaption of the heating curve
below
4 °C has taken place,
adaption sensitivity 2 (ZAF2) will automatically be reduced by one step. This means
that the extent of adaption and thus the readjustment of the heating curve’s slope will
gradually be reduced.
When readjusting the slope of the heating curve (operating line 30), the adaption sensi-
tivity will automatically be reset to the factory-set value.
Example using a nominal room temperature setpoint of 20 °C:
f Factor
f1
Factor for parallel displacement
f2 Factor
for
slope
TAged Attenuated outside temperature
ZAF1 Adaption sensitivity 1 (operating line 709
EXP
)
ZAF 2 Adaption sensitivity 2 (operating line 710
EXP
)
For more detailed information about the effects, refer to operating line “Adaption of the
heating curve” (operating line 726).
Benefit
Description
Setting
Effect
Reduction
Note
Diagram
0
23
7
1D
0
7
TA
12
4
-4
-12
0,5
1
f
20
ged
f
1
f
2
ZAF1
ZAF2
Note
