Download Excel CARE Control Icons User Guide

CARE CONTROL ICONS
Heating curve slope limit P5
ALPHABETIC REFERENCE
Number type: Decimal, Unit: None
Default: 1.6, limits: 0.4 to 4.5
The radio buttons determine whether operation is with or without adaptation.
Parameter Number
Descriptions
With Adaptation
P1
P2
P3
P4
Heating curve curvature
Heating curve slope
Heating curve slope limit
1 if adaptation is selected
Without Adaptation
P1 Heating curve curvature
P2 Heating curve slope
HCA Operation
HCA is a weather-compensated discharge air temperature calculator, that is,
software assigns discharge air temperature setpoints to temperatures by means of a
heating curve. If a room temperature sensor is connected, the controller can adapt
this heating curve automatically. Control example:
DA
PID
HCA
Discharge air setpoint
The controller uses parameters to performs several tasks to ensure economic
heating. Apart from the basic functions it performs (to control the desired
temperature according to a time program), the controller also ensures that certain
temperatures are maintained to protect the system or building. Default settings for
each parameter are based on years of experience to ensure this safe operation.
Adjustments are only necessary in very special cases.
Heating Curve
The weather-compensated controller requires a heating curve for each heating
circuit to determine the correct discharge air temperature setpoint according to
outdoor air temperature. The heating curve graph indicates the relationship between
outdoor air temperature and associated flow temperature.
4.5
110
3.5
3.0
2.5
100
2.0
90
1.8
1.6
80
Discharge Air
Temperature
1.4
70
1.2
60
1.0
50
0.8
0.6
40
0.4
30
20
+20
+15
+10
+5
0
-5
-10
-15
-20
Outdoor Air Temperature
95
74-5577–10 (US)
EN2B-0184 GE51 R0404 (Europe)