Danfoss ECL Comfort 310 Operating Manual page 12

Operating Guide ECL Comfort 310, application A377
A377, in general
Up to two Remote Control Units, ECA 30 / 31 can be connected to
one ECL controller in order to measure the room temperature and
control the ECL controller remotely.
When the DHW circuit is active for the heating / charging
procedure, heating circuits 1 and 2 can be closed in order to give
higher priority to the DHW heating / charging.
Holiday programs are present for Heating and DHW circuits.
Besides, a holiday program is present for the entire controller.
One or more connected flow or energy meters (based on M-bus
signal) can limit the flow or power to a set maximum (DHW circuit)
and in relation to the outdoor temperature (heating circuits).
Input S7 can be used to control the desired flow temperature of
heating circuit 1. The applied voltage in the range 0 - 10 volt is
converted in the ECL controller to the desired flow temperature.
Exercise of circulation pumps and control valve in periods without
heating demand can be arranged.
Additional ECL Comfort controllers can be connected via the ECL
485 bus in order to utilize common outdoor temperature signal,
time and date signals. The ECL controllers in the ECL 485 system
can work in master-slave system.
Unused input can, by means of an override switch, be used
to override the schedule to a fixed 'Comfort' , 'Saving' , 'Frost
protection' or 'Constant temperature' mode.
Modbus communication to a SCADA system can be established.
The M-bus data can furthermore be transferred to the Modbus
communication.
Alarm:
Alarm A1 (= relay 6) can be activated:
• if the actual flow temperature differs from the desired flow
temperature
• if a temperature sensor or its connection disconnects / short
circuits. (See: Common controller settings > System > Raw
input overview).
When the A377 has been uploaded, the ECL Comfort controller
starts in Manual mode. This can be used for checking the controlled
components for correct functionality.
12 | © Danfoss | 2017.10
The controller is pre-programmed with factory settings that are shown
in the 'Parameter ID overview' appendix.
VI.GU.F6.02