Danfoss ECL Comfort 210 Installation Manual page 72

Installation Guide
MENU > Settings > Return limit
Low T out X2 (return temp. limitation, low limit, X-axis)
Circuit
1
Set the outdoor temperature for the high return temperature limitation.
The corresponding Y coordinate is set in 'High limit Y2'.
MENU > Settings > Return limit
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'.
MENU > Settings > Return limit
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.
MENU > Settings > Return 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.
72 DEN-SMT/DK
ECL Comfort 210 / 310, application A237 / A337
11033
Setting range Factory setting
-60 ... 20 °C -15 °C
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
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.').
VI.LG.R1.02
Danfoss District Energy