ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
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<strong>Installation</strong> <strong>Guide</strong> <strong>ECL</strong> <strong>Comfort</strong> <strong>210</strong> / <strong>310</strong>, application <strong>A275</strong> / <strong>A375</strong><br />
5.0 Settings, circuit 1<br />
5.1 Flow (boiler) temperature<br />
The <strong>ECL</strong> <strong>Comfort</strong> controller determines and controls the flow<br />
(boiler) temperature related to the outdoor temperature. This<br />
relationship is called the heat curve.<br />
The heat curve is set by means of 6 coordinate points. The<br />
desired flow (boiler) temperature is set at 6 pre-defined outdoor<br />
temperature values.<br />
The shown value for the heat curve is an average value (slope),<br />
based on the actual settings.<br />
Outdoor<br />
temp.<br />
Desired flow (boiler) temp.<br />
A B C<br />
-30 °C 45 °C 75 °C 95 °C<br />
-15 °C 40 °C 60 °C 90 °C<br />
-5 °C 35 °C 50 °C 80 °C<br />
0 °C 32 °C 45 °C 70 °C<br />
5 °C 30 °C 40 °C 60 °C<br />
15 °C 25 °C 28 °C 35 °C<br />
A: Example for floor heating<br />
B: Factory settings<br />
C: Example for radiator heating (high demand)<br />
Heat curve<br />
Your<br />
settings<br />
Circuit Setting range Factory setting<br />
1 0.1 ... 4.0 1.0<br />
The heat curve can be changed in two ways:<br />
1. The value of the slope is changed (see heat curve examples<br />
on next page)<br />
2. The coordinates of the heat curve are changed<br />
Change the value of the slope:<br />
Push the dial to enter / change the slope value of the heat curve<br />
(example: 1.0).<br />
When the slope of the heat curve is changed by means of the slope<br />
value, the common point for all heat curves will be a desired flow<br />
(boiler) temperature = 24.6 °C at an outdoor temperature = 20 °C<br />
Change the coordinates:<br />
Push the dial to enter / change the coordinates of the heat curve<br />
(example: -30,75).<br />
The heat curve represents the desired flow (boiler) temperatures at<br />
different outdoor temperatures and at a desired room temperature<br />
of 20 °C.<br />
If the desired room temperature is changed, the desired flow<br />
(boiler) temperature also changes:<br />
(Desired room T - 20) × HC × 2.5<br />
where "HC" is the Heat Curve slope and "2.5" is a constant.<br />
Desired flow (boiler) temperature<br />
Slope changes<br />
110<br />
100<br />
80<br />
60<br />
40<br />
20<br />
Coordinate changes<br />
° C<br />
C<br />
B<br />
A<br />
-50 -40 -30 -20 -10 0 10 20<br />
The calculated flow (boiler) temperature can be influenced by the<br />
‘Boost’ and ‘Ramp’ functions etc.<br />
Example:<br />
Heat curve: 1.0<br />
Desired flow (boiler) temp.: 50 °C<br />
Desired room temp.: 22 °C<br />
Calculation (22–20) × 1.0 × 2.5 = 5<br />
Result:<br />
The desired flow (boiler) temperature will be corrected from 50 °C<br />
to 55 °C.<br />
<strong>Danfoss</strong> District Energy VI.GU.L1.02 DEN-SMT/DK 103
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