Settings; Return Temperature Limitation In A Master / Slave; System - Danfoss ECL Comfort 210 Operating Manual

ECL Comfort 210, 296 and 310, return temperature limitation

2.0 Settings

2.1 Return temperature limitation in a master / slave system
The circuit 1 menu for return temperature limit parameters
contains an additional parameter "DHW, ret. T limit" (= Domestic
Hot Water, return temperature limit).
When a slave in a master / slave system is in DHW-tank heating /
charging mode, the desired flow temperature value is transferred to
the master. The master will react by controlling a flow temperature
being a number of degrees higher ("Demand offset") than the
desired flow temperature from the slave.
When the master is fulfilling a DHW-tank heating / charging
demand from a slave, the return temperature limitation can be
done in relation to a set value.
The return temperature limitation will always be related to the
highest limitation value.
An example: Return temperature limitation (DHW) = 55 °C and
return temperature limitation (heating) = 60 °C.
The result will be a return temperature limitation at 60 °C.
If the master is not controlling a desired flow temperature from a
slave, the return temperature limitation can be done in relation to
the outdoor temperature.
The parameter "DHW, ret. T limit" is not present in applications with
DHW-tank heating / charging.
Examples: A237, A247, A367, A377.
MENU > Settings > Return temperature limitation in a master /
slave system
DHW, ret. T limit
Circuit
1
When an addressed slave is active in DHW-tank heating / charging, the
return temperature limitation in the master can be set.
Notes:
• The master circuit must be set to react on the desired flow temperature
in the slave(s). See "Demand offset" (ID 11017).
• The slave(s) must be set to send its / their desired flow temperature to the
master. See "Send desired T" (ID 1x500).
OFF:
No influence from slaves. The return temperature
limitation is related to settings in "Return limit".
10 –
Return temperature limitation value when slave is in
110 °C: DHW tank heating / charging operation.
VI.GU.W2.02
11029
Setting range Factory setting
OFF / 10 – 110 °C OFF
# 1 # = Master, example A266, address 15
# 2 # = Slave, example A237, address 9
# 3 # = Slave, example A367, address 6
Some examples of applications with DHW-tank heating / charging are:
• A217, A237, A247, A367, A377
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