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Sketch your application
The ECL Comfort controller series is designed for a wide range
of heating, domestic hot-water (DHW) and cooling systems
with different configurations and capacities.
If your system differs from the diagrams shown in section
10, you may want to make a sketch of the system about to
be installed. This makes it easier to use the Installer’s Guide,
which will guide you step-by-step from installation to final
adjustments before the end-user takes over.
The controller is pre-programmed with factory settings that are
shown in the relevant sections of this guide.
However, you might come across some settings that are not listed
in this instruction. These settings could be related either to recent
updates or the use of optional modules (which are described in
the instructions in question).
How to use this guide
This guide is divided into two parts:
• User’s Guide:
Yellow sections 1-7
• Installer's Guide: Grey sections 10 and onwards
The application
L76
is very flexible. These are the basic principles:
Heating:
Typically, the flow temperature is adjusted according to your
requirements.
The flow temperature sensor, S3, (S4 in circuit 2) is the most
important sensor. The desired flow temperature at S3 (S4 in
circuit 2) is calculated in the ECL controller, based on the outdoor
temperature (S1). The lower the outdoor temperature, the higher
the desired flow temperature.
The motorized control valve, M1, (M2 in circuit 2) is opened
gradually when the flow temperature is lower than the desired
flow temperature and vice versa.
The return temperature, S2, (S6 in circuit 2) to the district heating
supply should not be too high. If so, the desired flow temperature
can be adjusted (typically to a lower value), thus resulting in a
gradual closing of the motorized control valve. In boiler-based
heating supply, the return temperature should not be too low
(same adjustment procedure as above).
If the measured room temperature does not equal the desired
room temperature, the desired flow temperature can be adjusted.
Circulation pumps are ON when the desired flow temperature is
higher than 20 °C or the outdoor temperature is lower than 2 °C.
M1 is a 3-point controlled actuator and M2 is a 0 - 10 volt
controlled actuator.
DHW:
If the measured DHW temperature (S5) is lower than the desired
DHW temperature, the motorized control valve (M3) is opened
gradually and vice versa. If the desired DHW temperature cannot
be reached, the heating circuits can be closed gradually. The
consumption of DHW is flow detected to give an optimum control.
A flow switch (FS) detects DHW consumption, measures the
supply temperature (S7), and ensures an optimum control of the
DHW temperature. M3 is a 3-point controlled actuator.
Before you start
