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 />
2.0 <strong>Installation</strong><br />
2.1 Before you start<br />
The application <strong>A275</strong>.1 is very flexible. These are the basic<br />
principles:<br />
Heating (circuit 1):<br />
Typically, the boiler temperature is adjusted according to your<br />
requirements. The boiler temperature sensor S3 is the most<br />
important sensor. It must be placed correctly in order to measure<br />
the boiler temperature. The desired boiler temperature at S3 is<br />
calculated in the <strong>ECL</strong> controller, based on the outdoor temperature<br />
(S1). The lower the outdoor temperature, the higher the desired<br />
boiler temperature. The boiler temperature is also the flow<br />
temperature in the direct connected heating circuit.<br />
By means of a week schedule (up to 3 ‘<strong>Comfort</strong>’ periods / day), the<br />
heating circuit can be in ‘<strong>Comfort</strong>’ or ‘Saving’ mode (two different<br />
temperature values for the desired room temperature). In 'Saving'<br />
mode a 'Total stop' function can be selected in order to switch OFF<br />
the heating.<br />
The burner is switched ON when the boiler temperature is<br />
lower than the desired boiler temperature and switched OFF<br />
when the boiler temperature is higher than the desired boiler<br />
temperature. A switching difference determines the ON / OFF<br />
control. Furthermore, the boiler protection function will only<br />
switch ON the circulation pump if the boiler temperature gets<br />
above a minimum temperature. A minimum ON-time can be set for<br />
the burner in order to increase the boiler's efficiency.<br />
The return temperature (S5) to the boiler should not be too<br />
high (condensing boiler) or too low (oil or gas fired boiler). If so,<br />
the desired boiler temperature can be decreased or increased.<br />
Furthermore, the return temperature limitation can be dependent<br />
of the outdoor temperature. Typically, the lower the outdoor<br />
temperature, the higher the accepted return temperature.<br />
If the measured room temperature (measured by S7 or the remote<br />
control unit ECA 30) does not equal the desired room temperature,<br />
the desired boiler temperature can be adjusted.<br />
The circulation pump (P1) is ON at heat demand or at frost<br />
protection.<br />
The heating can be switched OFF if the outdoor temperature gets<br />
higher than a set value.<br />
Typical <strong>A275</strong>.1 application:<br />
S1<br />
B1<br />
S3<br />
S5<br />
* Pressure relief valve<br />
P1<br />
<strong>ECL</strong> <strong>210</strong> / (<strong>310</strong>)<br />
*<br />
The shown diagram is a fundamental and simplified example and does<br />
not contain all components that are necessary in a system.<br />
All named components are connected to the <strong>ECL</strong> <strong>Comfort</strong> controller.<br />
List of components:<br />
S1 Outdoor temperature sensor<br />
S3 Boiler temperature sensor<br />
S5 Return temperature sensor<br />
S7 Room temperature sensor / ECA 30<br />
P1 Circulation pump<br />
B1 Burner<br />
A1 Alarm<br />
The controller is pre-programmed with factory settings that are shown<br />
in the relevant chapters of this guide.<br />
<strong>Danfoss</strong> District Energy VI.GU.L1.02 DEN-SMT/DK 5<br />
A1<br />
S7<br />
①<br />
<strong>Danfoss</strong><br />
87H2163.10
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