The grey
side of the
ECL Card
Ex
tended ser
vic
e
The grey
side of the
ECL Card
Ex
tended ser
vic
e
Service parameter(s) 37
32h
Service parameter(s) 43
32i
37 Time constant for return temperature limitation
Circuit
Setting range
Factory setting
I / II
OFF / 1 ... 50
25 / 25
Controls how fast the actual return temperature adapts to the
desired return temperature limitation.
Adjust the time constant for the return limitation.
The setting will eliminate the difference
between the acceptable and the actual return
temperature.
The difference is integrated to adjust the desired
flow temperature.
OFF:
The desired flow temperature will not be
adjusted any further.
1:
The desired flow temperature will be
adjusted quickly.
50:
The desired flow temperature will be
adjusted slowly.
43 Parallel operation of DHW and heating circuits
Circuit
Setting range
Factory setting
I / II
OFF / 1 ... 99 K
OFF / OFF
Choose whether the heating circuit is to operate in dependence of
the DHW circuit.
OFF:
Independent parallel operation, i.e. the
DHW and the heating circuits operate
independently of each other. It makes
no difference whether the desired DHW
temperature can be reached.
1 ... 99:
Dependent parallel operation, i.e. the
desired heating temperature depends on
the DHW demand.
Choose how much the DHW temperature
(circuit III) can drop before the desired
heating temperature (circuit I / II) has to be
decreased.
Temp.
100% parallel
operation
Line 43
(acceptable deviation)
Desired DHW temp.
Actual DHW
temp.
Time
Parallel operation with decreased
heating temp.
If the actual DHW temperature deviates more than the set value
(line 43), the gear motors M1 / M2 in the heating circuits will close
to such an extent that the DHW temperature stabilizes at the
lowest acceptable value.
