Danfoss ECL Comfort 210 Operating Manual page 66

Operating Guide ECL Comfort 210/296/310, application A237/A337
MENU > Settings > Return limit
Infl. - max. (return temp. limitation - max. influence)
Determines how much the desired flow temperature will be influenced if the
return temperature is higher than the set limit.
See Appendix "Parameter ID overview"
Influence higher than 0:
The desired flow temperature is increased, when the return
temperature gets higher than the set limit.
Influence lower than 0:
The desired flow temperature is decreased, when the return
temperature gets higher than the set limit.
MENU > Settings > Return limit
Infl. - min. (return temp. limitation - min. influence)
Determines how much the desired flow temperature will be influenced if the
return temperature is lower than the calculated limit.
See Appendix "Parameter ID overview"
Influence higher than 0:
The desired flow temperature is increased, when the return
temperature gets below the calculated limit.
Influence lower than 0:
The desired flow temperature is decreased, when the return
temperature gets below the calculated limit.
MENU > Settings > Return limit
Adapt. time (adaptation time)
Controls how fast the return temperature adapts to the desired return
temperature limit (Integration control).
See Appendix "Parameter ID overview"
OFF: The control function is not influenced by the 'Adapt.
time' .
Minor
The desired temperature is adapted quickly.
value:
Major The desired temperature is adapted slowly.
value:
66 | © Danfoss | 2017.05
Example
The return limit is active above 50 °C.
1x035
The influence is set to 0.5.
The actual return temperature is 2 degrees too high.
Result:
The desired flow temperature is changed by 0.5 x 2 = 1.0 degree.
Example
The return limit is active below 50 °C.
1x036
The influence is set to -3.0.
The actual return temperature is 2 degrees too low.
Result:
The desired flow temperature is changed by -3.0 x 2 = -6.0 degrees.
Normally, this setting is 0 in district heating systems because a lower
return temperature is acceptable.
Typically, this setting is higher than 0 in boiler systems to avoid a too
low return temperature (see also 'Infl. - max.').
1x037
The adaptation function can correct the desired flow temperature
with max. 8 K.
VI.LG.R3.02