Danfoss ECL Comfort 210 Installation Manual page 61

Installation Guide
High limit Y2 (return temp. limitation, high limit, Y-axis)
Circuit
1
Set the return temperature limitation referring to the outdoor temperature
set in 'Low T out X2'.
The corresponding X coordinate is set in 'Low T out X2'.
Infl. - max. (return temp. limitation - max. influence)
Circuit
1
Determines how much the desired flow temperature will be influenced if the
return temperature is higher than the calculated limit.
Influence higher than 0:
The desired flow temperature is increased, when the return
temperature gets higher than the calculated limit.
Influence lower than 0:
The desired flow temperature is decreased, when the return
temperature gets higher than the calculated limit.
Infl. - min. (return temp. limitation - min. influence)
Circuit
1
Determines how much the desired flow temperature will be influenced if the
return temperature is lower than the calculated limit.
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.
Adapt. time (adaptation time)
Circuit
1
Controls how fast the return temperature adapts to the desired return
temperature limit (I control).
OFF:
The control function is not influenced by the 'Adapt.
time' .
1:
The desired temperature is adapted quickly.
50:
The desired temperature is adapted slowly.
Danfoss District Energy
ECL Comfort 210 / 310, application A231 / A331
11034
Setting range Factory setting
10 ... 150 °C 60 °C
11035
Setting range Factory setting
-9.9 ... 9.9 0.0
11036
Setting range Factory setting
-9.9 ... 9.9 0.0
11037
Setting range Factory setting
OFF / 1 ... 50 s 25 s
Example
The return limit is active above 50 °C.
The influence is set to -2.0.
The actual return temperature is 2 degrees too high.
Result:
The desired flow temperature is changed by -2.0 x 2 = -4.0 degrees.
Normally, this setting is lower than 0 in district heating systems to
avoid a too high return temperature.
Typically, this setting is 0 in boiler systems because a higher return
temperature is acceptable (see also 'Infl. - min.').
Example
The return limit is active below 50 °C.
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.').
The adaptation function can correct the desired flow temperature
with max. 8 K.
VI.LG.P1.02 DEN-SMT/DK 61