Danfoss ECL Comfort 300 - Page 50

The grey
side of the
ECL Card
Extended service
Service parameter(s) 36
32j
36 Return temperature inuence - min. limitation
Circuit Setting range Factory setting
I / II -9.9 ... 0 ... 9.9 0.0 / 0.0
Set the inuence from the return temperature on the desired ow
temperature.
Set the inuence of the min. return temperature
limitation (set in line 30 or lines 31-34).
Inuence higher than 0:
The desired ow temperature is increased, when
the return temperature gets below the set limit.
Inuence lower than 0:
The desired ow temperature is decreased, when
the return temperature gets below the set limit.
0
Inuence
Min. limitation > 0
Return limit Return temp.
Min. limitation < 0
Example
The return limit is active up to 50 °C.
The inuence is set to -3.0.
The actual return temperature is 2 degrees too low.
Result:
The desired ow temperature is changed by -3.0 x 2 = -6 degrees.
Normally, the setting in line 36 is 0 in district heating systems
because a lower return temperature is acceptable.
Typically, the setting in line 36 is higher than 0 in boiler systems to
avoid a too low return temperature (see also line 35).