Room Limit - Danfoss ECL Comfort 296 Operating Manual

Operating Guide ECL Comfort 210/296/310, application A230

5.3 Room limit

This section is only relevant if you have installed a room
temperature sensor or a Remote Control Unit.
The controller adjusts the desired flow temperature to compensate
for the difference between the desired and the actual room
temperature.
If the room temperature is higher than the desired value, the
desired flow temperature can be reduced.
The 'Infl. -max.' (Influence, max. room temp.) determines how
much the desired flow temperature should be reduced.
Use this influence type to avoid a too high room temperature. The
controller will allow for free heat gains, i.e. solar radiation etc.
If the room temperature is lower than the desired value, the desired
flow temperature can be increased.
The 'Infl. -min.' (Influence, min. room temperature) determines
how much the desired flow temperature should be increased.
Use this influence to avoid a too low room temperature.
A typical setting will be -4.0 for 'Infl. -max.' and 4.0 for 'Infl. -min.'
Parameters indicated with an ID no. like "1x607" mean a universal
parameter.
x stands for circuit / parameter group.
68 | © Danfoss | 2017.05
Influence
The 'Infl. - max.' and 'Infl. - min. ' determine how much the room
temperature should influence the desired flow temperature.
If the 'Infl. ' factor is too high and / or the 'Adapt. time' too low, there is
a risk of unstable control.
Example 1:
The actual room temperature is 2 degrees too high.
The 'Infl. - max. ' is set to -4.0.
The 'Infl. - min. ' is set to 3.0.
Result:
The desired flow temperature is decreased by 2 x -4.0 = 8.0 degrees.
Example 2:
The actual room temperature is 3 degrees too low.
The 'Infl. - max. ' is set to -4.0.
The 'Infl. - min. ' is set to 3.0.
Result:
The desired flow temperature is increased by 3 x 3.0 = 9.0 degrees.
'Infl. - min.' (min. limitation)
Desired room temperature
Actual room temperature
'Infl. - max.' (max. limitation)
VI.LG.H4.02