Override Function - Danfoss ECL Comfort 210 Operating Manual

Operating Guide

7.2 Override function

The ECL 210 / 296 / 310 controllers can receive a signal in order to
override the existing schedule. The override signal can be a switch
or a relay contact.
Different override modes can be selected, depending on
application key type.
Override modes: Comfort, Saving, Constant temperature and Frost
protection.
"Comfort" is also called normal heating temperature.
"Saving" can be reduced heating or heating stopped.
"Constant temperature" is a desired flow temperature, set in the
menu "Flow temperature".
"Frost protection" stops the heating totally.
Override by means of override switch or relay contact is possible
when the ECL 210 / 296 / 310 is in scheduled mode (clock).
Example 1
ECL in Saving mode, but in Comfort mode at override.
Choose an unused input, for example S8. Connect the override
switch or override relay contact.
Settings in ECL:
1. Select circuit > MENU > Settings > Application > Ext. input:
Select the input S8 (the wiring example)
2. Select circuit > MENU > Settings > Application > Ext. mode:
Select COMFORT
3. Select circuit > MENU > Schedule:
Select all weekdays
Set "Start1" to 24.00 (this disables Comfort mode)
Exit menu and confirm by "Save"
4. Remember to set the circuit in question in scheduled mode
("clock").
Result: When the override switch (or the relay contact) is ON, the
ECL 210 / 296 / 310 will operate in Comfort mode.
When the override switch (or the relay contact) is OFF, the ECL 210 /
296 / 310 will operate in Saving mode.
Danfoss District Energy
ECL Comfort 210 / 310, application A247 / A347
Example, override switch connected to S8:
Example, override relay connected to S8:
# 1 # = Override switch or relay contact (not activated / activated)
# 2 # = Function mode (Schedule / Comfort)
# 3 # = Time
VI.LG.S3.02 DEN-SMT/DK 139