Application A333 in general:
Up to two Remote Control Units, the ECA 30 can be connected to
one ECL controller in order to control the ECL controller remotely.
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.
A connected flow or energy meter (based on M-bus signal) can
limit the flow or energy to a set maximum and in relation to the
outdoor temperature.
Unused input can, by means of an override switch, be used to
override the schedule to a fixed 'Comfort' or 'Saving' mode.
Modbus communication to a SCADA system can be established.
The M-bus data can furthermore be transferred to the Modbus
communication.
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).
•
if the circulation pump(s) do(es) not generate acceptable
pressure.
•
if the refill water pump(s) do(es) not generate acceptable
pressure.
•
if measured pressures are not inside an acceptable pressure
range.
The controller is pre-programmed with factory settings that are shown
in the ‘Parameter ID overview’ appendix.
VI.GU.T2.02
© Danfoss | 2017.09 | 9
Operating Guide ECL Comfort 310, application A333
