Danfoss ECL Comfort 210 Operating Manual page 71

Operating Guide ECL Comfort 210/296/310, application A232 / A332
Cool curve
The application determines and controls the cooling flow
temperature related to the outdoor temperature. This relationship
is called the cool curve.
The cool curve is formed by 6 coordinate points. The desired
cooling flow temperature is set at 6 pre-defined outdoor
temperature values.
The shown value for the cool curve is an average value (slope),
based on the actual settings.
Outdoor temp.
Desired flow temp.
(factory settings)
20 °C 20
25 °C 19
30 °C 18
17
35 °C
16
40 °C
45 °C 15
Change the coordinates:
Push the dial to enter / change the desired flow temperature at the
6 coordinates of the cooling curve, (example: 20,20).
The cool curve represents the desired flow temperatures at
different outdoor temperatures and at a desired room temperature
of 20 °C.
If the desired room temperature is changed, the desired flow
temperature also changes:
(Desired room T - 20) × CC × 2.5
where "CC" is the Cool curve slope and "2.5" is a constant.
Parameters indicated with an ID no. like "1x607" mean a universal
parameter.
x stands for circuit / parameter group.
VI.JM.G2.02
Cool curve
Your settings
The small arrows ( ) indicate 6 different outdoor temperature
values at which you can change the cool curve.
Cool curve
Example, change of desired room temperature:
Cool curve:
Desired flow temp.:
Desired room temp.:
Calculation (18 - 20) × 0.2 × 2.5 =
Result:
The desired flow temperature will be corrected from 18°C to 17°C.
0.2
18°C
18°C
-1
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