Settings, Circuit 2; Flow Temperature - Danfoss ECL Comfort 210 Installation Manual

Installation Guide

6.0 Settings, circuit 2

6.1 Flow temperature

The ECL Comfort controller determines and controls the flow
temperature related to the outdoor temperature. This relationship
is called the heat curve.
The heat curve is set by means of 6 coordinate points. The desired
flow temperature is set at 6 pre-defined outdoor temperature
values.
The shown value for the heat curve is an average value (slope),
based on the actual settings.
Outdoor
Desired flow temp.
temp.
A
-30 °C 45 °C
-15 °C 40 °C
-5 °C 35 °C
0 °C 32 °C
5 °C 30 °C
15 °C 25 °C
Adjust the desired flow temperature at -30, -15, -5, 0, 5, and 15 °C,
if required.
A: Example for floor heating
B: Factory settings
C: Example for radiator heating (high demand)
Heat curve
Circuit
2
The heat curve can be changed in two ways:
1. The value of the slope is changed (see heat curve examples
on next page)
2. The coordinates of the heat curve are changed
Change the value of the slope:
Push the dial to enter / change the slope value of the heat curve
(example: 1.0).
When the slope of the heat curve is changed by means of the slope
value, the common point for all heat curves will be a desired flow
temperature = 24.6 °C at an outdoor temperature = 20 °C
Change the coordinates:
Push the dial to enter / change the coordinates of the heat curve
(example: -30,75).
The heat 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) × HC × 2.5
where "HC" is the Heat Curve slope and "2.5" is a constant.
Danfoss District Energy
ECL Comfort 210 / 310, application A275 / A375
Your
settings
B C
75 °C 95 °C
60 °C 90 °C
50 °C 80 °C
45 °C 70 °C
40 °C 60 °C
28 °C 35 °C
Setting range Factory setting
0.1 ... 4.0
Desired flow temperature
110
100
B
80
60
A
40
20
-50 -40 -30 -20 -10
Slope changes
1.0
Coordinate changes
The calculated flow temperature can be influenced by the 'Boost' and
'Ramp' functions etc.
Example:
Heat curve:
Desired flow temp.:
Desired room temp.:
Calculation (22–20) × 1.0 × 2.5 =
Result:
The desired flow temperature will be corrected from 50 °C to 55 °C.
VI.GU.L1.02
0 10 20
1.0
50 °C
22 °C
5
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