Optimization
The controller optimizes the start time of the scheduled
temperature periods. Based on the outdoor temperature, the
controller automatically calculates when to start in order to reach
the comfort temperature at the set time. The lower the outdoor
temperature, the earlier the start time.
Outdoor temperature trend
The arrow indicates the tendency, i.e. whether the temperature
rises or falls.
Override mode
When ECL Comfort is in Scheduled mode, a switch or contact
signal can be applied to an input in order to override to Comfort,
Saving, Frost protection or Constant temperature. As long as the
switch or contact signal is applied, the override is active.
Pt 1000 sensor
All sensors used with the ECL Comfort controller are based on the
Pt 1000 type (IEC 751B). The resistance is 1000 ohm at 0 °C and it
changes with 3.9 ohm / degree.
Pump control
One circulation pump is working and the other is the spare
circulation pump. After a set time, the roles are exchanged.
Refill water function
If the measured pressure in the heating system is too low (e.g.
due to a leakage), water can be supplemented.
Return temperature
The temperature measured in the return influences the desired
flow temperature.
Room temperature
Temperature measured by the room temperature sensor or
the Remote Control Unit. The room temperature can only be
controlled directly if a sensor is installed. The room temperature
influences the desired flow temperature.
Room temperature sensor
Temperature sensor placed in the room (reference room, typically
the living room) where the temperature is to be controlled.
Saving temperature
Temperature maintained in the heating / DHW circuit during
saving temperature periods. Typically, the Saving temperature is
lower than the Comfort temperature in order to save energy.
SCADA
Supervisory Control And Data Acquisition. A supervisory system
for remote control and monitoring.
Schedule
Schedule for periods with comfort and saving temperatures. The
schedule can be made individually for each week day and may
consist of up to 3 comfort periods per day.
Software
is used in the ECL Comfort controller to do the application related
processes.
Weather compensation
Flow temperature control based on the outdoor temperature.
The control is related to a user-defined heat curve.
2-point control
ON / OFF control, e.g. circulation pump, ON / OFF valve,
change-over valve or damper control.
3-point control
Opening, closing or no action of the actuator for the motorized
control valve. No action means that the actuator remains in its
current position.
VI.GU.L2.02
© Danfoss | 2017.09 | 191
Operating Guide ECL Comfort 210/296/310, application A275/A375
