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 />
The application <strong>A275</strong>.3 is very flexible. These are the basic<br />
principles:<br />
Heating (circuit 2):<br />
Typically, the flow temperature is adjusted according to your<br />
requirements. The flow temperature sensor S4 is the most<br />
important sensor. The desired flow temperature at S4 is calculated<br />
in the <strong>ECL</strong> controller, based on the outdoor temperature (S1).<br />
The lower the outdoor temperature, the higher the desired flow<br />
temperature.<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 motorized control valve M2 is opened gradually when the flow<br />
temperature, S4, is lower than the desired flow temperature and<br />
vice versa.<br />
The desired flow temperature at S4 will typically determine the<br />
desired boiler temperature (S3).<br />
The return temperature (S2) can be limited. If so, the desired flow<br />
temperature at S4 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 S8 or the remote<br />
control unit ECA 30) does not equal the desired room temperature,<br />
the desired flow temperature can be adjusted.<br />
The circulation pump (P4) is ON at heat demand or at frost<br />
protection.<br />
The heating can be switched OFF when the outdoor temperature is<br />
higher than a selectable value or a DHW heating priority is present.<br />
Typical <strong>A275</strong>.3 application:<br />
S1<br />
B1<br />
S3<br />
S5<br />
* Pressure relief valve<br />
M2<br />
P1<br />
P3<br />
<strong>ECL</strong> <strong>210</strong> / (<strong>310</strong>)<br />
S4<br />
S2<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 />
S2 Return temperature sensor, circuit 2<br />
S3 Boiler temperature sensor, circuit 1<br />
S4 Flow temperature sensor, circuit 2<br />
S5 Return temperature sensor, circuit 1<br />
S6 DHW tank temperature sensor<br />
S7 Room temperature sensor / ECA 30, circuit 1<br />
S8 Room temperature sensor / ECA 30, circuit 2<br />
M2 Motorized control valve, circuit 2<br />
P1 Circulation pump, circuit 1<br />
B1 Burner<br />
P3 DHW heating pump, circuit 3<br />
P4 Circulation pump, circuit 2<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 9<br />
P4<br />
*<br />
S6<br />
S8<br />
S7<br />
②<br />
①<br />
③<br />
<strong>Danfoss</strong><br />
87H2169.10