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Eco (intermittently operating pump)
Pump operating mode Eco is the factory setting. This pump
operating mode is useful for removing residual heat after
hot water generation when the heat demand is extremely
low and large temperature spreads exist between the hot
water generation and heating mode target values. This pre-
vents living rooms from being under-supplied. If there is a
heat demand, the pump is switched on every 25 minutes for
5 minutes once the overrun time has elapsed.
11.1.3
Setting the maximum flow temperature
The maximum flow temperature for the heating is set at the
factory to 75 °C. This can be set to a value in the range of
40 °C to 80 °C under diagnostics code "D.071".
11.1.4
Setting the return flow temperature control
If the boiler is connected to an underfloor heating system,
the temperature control can be changed from flow temper-
ature control (default setting) to return flow temperature
control under diagnostics code "D.017".
Set maximum burner anti-cycling time [min]
T
(target)
Feed
[°C]
1
5
20
2.0
5.0
25
2.0
4.5
30
2.0
4.0
35
2.0
4.0
40
2.0
3.5
45
2.0
3.0
50
2.0
3.0
55
2.0
2.5
60
2.0
2.0
65
2.0
1.5
70
2.0
1.5
75
2.0
1.0
11.2 Effective burner anti-cycling times
Installation and maintenance instructions ecoTEC plus 0020134833_01
Adapting the boiler to the heating installation
10
15
20
10.0
15.0
20.0
9.2
14.0
18.5
8.5
12.5
16.5
7.5
11.0
15.0
6.5
10.0
13.0
6.0
8.5
11.5
5.0
7.5
9.5
4.5
6.0
8.0
3.5
5.0
6.0
2.5
3.5
4.5
2.0
2.5
2.5
1.0
1.0
1.0
11.1.5
Burner anti-cycling time
Setting the burner anti-cycling time
To prevent frequent switching on and off of the burner and
therefore to prevent energy loss, an electronic restart lock-
out is activated for a specific period each time the burner is
switched off. You can adjust the burner anti-cycling time to
the conditions of the heating installation.
The burner anti-cycling time is only activated for the heat-
ing mode.
Hot water handling during a burner anti-cycling time does
not affect the timer.
You can set the maximum burner anti-cycling time in the
installer level under diagnostics code "D.002" within the
range 2 minutes to 60 minutes (factory setting: 20 min).
The effective burner anti-cycling time depends on the cur-
rent target flow temperature and the maximum burner anti-
cycling time that is set.
The effective burner anti-cycling times with respect to the
target flow temperature and the maximum set burner anti-
cycling time can be found in the following tab..
i
The remaining burner anti-cycling time following
a regular shutdown in heating mode can be
called up under diagnostics code "D.067".
Resetting the remaining burner anti-cycling time
You have two options to reset the remaining burner anti-
cycling time:
25
30
35
25.0
30.0
35.0
23.0
27.5
32.0
20.5
25.0
29.0
18.5
22.0
25.5
16.5
19.5
22.5
14.0
17.0
19.5
12.0
14.0
16.5
10.0
11.5
13.5
7.5
9.0
10.5
5.5
6.5
7.0
3.0
3.5
4.0
1.0
1.0
1.0
40
45
50
40.0
45.0
50.0
36.5
41.0
45.0
33.0
37.0
41.0
29.5
33.0
36.5
26.0
29.0
32.0
22.5
25.0
27.5
18.5
21.0
23.5
15.0
17.0
19.0
11.5
13.0
14.5
8.0
9.0
10.0
4.5
5.0
5.5
1.0
1.0
1.0
11
55
60
55.0
60.0
50.0
54.5
45.0
49.5
40.5
44.0
35.5
38.5
30.5
33.0
25.5
28.0
20.5
22.5
15.5
17.0
11.0
11.5
6.0
6.5
1.0
1.0
55
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